实例介绍
【实例简介】
【实例截图】
Programming for ESP32WiFi蓝牙编程_2018P1063.pdf
【核心代码】
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ContentsIntroduction................................................................................................................................48Important Documentation Notes – ESP8266 and ESP32...........................................................49Overview....................................................................................................................................49The ESP32............................................................................................................................50The ESP32 specification.......................................................................................................51Modules.................................................................................................................................52ESP-WROOM-32..............................................................................................................52ESP32-DevKitC................................................................................................................53ESP-WROVER-KIT..........................................................................................................55The SparkFun ESP32 thing..............................................................................................60Connecting to the ESP32...........................................................................................................61Assembling circuits....................................................................................................................62USB to UART converters.......................................................................................................63Breadboards..........................................................................................................................64Power....................................................................................................................................65Multi-meter / Logic probe / Logic Analyzer.............................................................................66Sundry components..............................................................................................................66Physical construction.............................................................................................................66Configuration for flashing the device.....................................................................................67Programming for ESP32............................................................................................................68Espressif IoT Development framework..................................................................................68Application entry point......................................................................................................71How ESP-IDF works.........................................................................................................72Error handling...................................................................................................................75The build environment menu configuration.......................................................................75Adding a custom ESP-IDF component.............................................................................82Working with memory.......................................................................................................85Compiling..............................................................................................................................86Compilation.......................................................................................................................87Flashing............................................................................................................................89Loading a program............................................................................................................91Programming environments..............................................................................................93Compilation tools..............................................................................................................93xntensa-esp32-elf-ar....................................................................................................94esptool.py.....................................................................................................................95xtensa-esp32-elf-gcc....................................................................................................97gen_appbin.py..............................................................................................................98make............................................................................................................................99xtensa-esp32-elf-strip...................................................................................................99xtensa-esp32-elf-nm...................................................................................................100Page 2xtensa-esp32-elf-objcopy...........................................................................................100xtensa-esp32-elf-objdump..........................................................................................100xxd.............................................................................................................................100Linking.................................................................................................................................101Sizes of images..............................................................................................................104Debugging...........................................................................................................................105ESP-IDF logging.............................................................................................................105Exception handling.........................................................................................................108Address to source line....................................................................................................109Core dump processing....................................................................................................110Using a debugger (GDB).................................................................................................115OpenOCD and JTAG......................................................................................................116Using the ESP-WROVER-KIT for JTAG.....................................................................118Dumping IP Addresses....................................................................................................119Debugging and testing TCP and UDP connections.........................................................119Android – Socket Protocol..........................................................................................119Android – UDP Sender/Receiver................................................................................119Windows – Hercules...................................................................................................120SocketTest..................................................................................................................120Linux – netcat (nc)......................................................................................................120Curl............................................................................................................................120Eclipse – TCP/MON...................................................................................................121httpbin.org..................................................................................................................123RequestBin.................................................................................................................123tcpdump.....................................................................................................................124ESP-IDF component debugging.....................................................................................124LWIP..........................................................................................................................124Run a Blinky....................................................................................................................124WiFi subsystem........................................................................................................................125WiFi Theory.........................................................................................................................125Initializing the WiFi environment..........................................................................................127Setting the operation mode.................................................................................................127Scanning for access points..................................................................................................128Handling WiFi events..........................................................................................................130Station configuration............................................................................................................137Starting up the WiFi environment........................................................................................138Connecting to an access point............................................................................................138Being an access point.........................................................................................................141Working with connected stations.........................................................................................145WiFi at boot time.................................................................................................................145The DHCP client..................................................................................................................146The DHCP server................................................................................................................146Page 3Current IP Address, netmask and gateway..........................................................................147WiFi Protected Setup – WPS..............................................................................................147Designs for bootstrapping WiFi...........................................................................................148Working with TCP/IP................................................................................................................149The Lightweight IP Stack – lwip...........................................................................................150TCP.....................................................................................................................................151TCP/IP Sockets...................................................................................................................152Handling errors...............................................................................................................155Configuration settings.....................................................................................................159Using select()..................................................................................................................160Differences from "standard" sockets...............................................................................160UDP/IP Sockets...................................................................................................................160TLS, SSL and security.........................................................................................................162mbedTLS client app structure.........................................................................................164mbedTLS client example................................................................................................166mbedTLS server app structure.......................................................................................168mbedTLS Debugging......................................................................................................170OpenSSL........................................................................................................................171RSA encryption/decryption..............................................................................................171Name Service......................................................................................................................171Multicast Domain Name Systems........................................................................................172mDNS API programming.................................................................................................173Installing Bonjour............................................................................................................174Avahi...............................................................................................................................177Working with SNTP.............................................................................................................178Java Sockets.......................................................................................................................180Bluetooth..................................................................................................................................183Bluetooth specification........................................................................................................183Bluetooth UUIDs.............................................................................................................186Bluetooth GAP................................................................................................................186Low level packet.........................................................................................................187GAP Advertizing data.................................................................................................188Advertisability – limited and general...........................................................................191Directed advertising....................................................................................................191Non-connectable advertising......................................................................................192Filtering devices.........................................................................................................192Performing a scan......................................................................................................192Performing advertising...............................................................................................195Bluetooth GATT..............................................................................................................196GATT Characteristic...................................................................................................198Being a GATT client...................................................................................................199Being a GATT Server.................................................................................................201Notifications and indications.......................................................................................201GATT XML descriptions..............................................................................................202Page 4Service Discovery Protocol.............................................................................................202ESP32 and Bluetooth..........................................................................................................203GATT Server – Read request..........................................................................................204Debugging ESP32 Bluetooth..........................................................................................205Bluetooth C Programming in Linux......................................................................................205hci_get_route..................................................................................................................205hci_open_dev.................................................................................................................205hci_inquiry......................................................................................................................206hci_read_remote_name..................................................................................................207str2ba..............................................................................................................................207ba2str..............................................................................................................................207Bluetooth programming in Node.js......................................................................................208Using Noble....................................................................................................................208Using Bleno....................................................................................................................213Bluetooth Audio...................................................................................................................214Bluetooth RFCOMM............................................................................................................215Bluetooth tools.....................................................................................................................217l2ping..............................................................................................................................217rfcomm............................................................................................................................217bluetoothctl.....................................................................................................................218hciconfig.........................................................................................................................219hcidump..........................................................................................................................220hcitool.............................................................................................................................220gatttool............................................................................................................................221Bluetooth examples.............................................................................................................222The iTag peripheral.........................................................................................................222Smart Watch / The TW64 Band......................................................................................224Web Bluetooth.....................................................................................................................226The Physical Web...............................................................................................................233BLE beacons.......................................................................................................................233Hardware interfacing................................................................................................................233GPIOs.................................................................................................................................234Pull up and pull down settings........................................................................................236GPIO Interrupt handling..................................................................................................236Expanding the number of available GPIOs.....................................................................240PCF8574....................................................................................................................240PCF8575....................................................................................................................244MCP23017.................................................................................................................245Interrupt Service Routines – ISRs.......................................................................................250Working with I2C.................................................................................................................252Using the ESP-IDF I2C driver.........................................................................................254Common I2C devices......................................................................................................257Page 5Working with SPI – Serial Peripheral Interface....................................................................257Using the ESP-IDF SPI driver.........................................................................................260The Arduino Hardware Abstraction Layer SPI.................................................................263Common SPI devices.....................................................................................................265Working with UART/serial....................................................................................................266Using the VFS component with serial.............................................................................269I2S Bus................................................................................................................................269I2S – Camera..................................................................................................................270I2S – LCD.......................................................................................................................270I2S – DMA......................................................................................................................270RMT – The Remote Peripheral............................................................................................275Timers and time...................................................................................................................281LEDC – Pulse Width Modulation – PWM.............................................................................284Automated PWM fading..................................................................................................288Analog to digital conversion.................................................................................................289Sleep modes.......................................................................................................................292Security...............................................................................................................................294Working with flash memory.................................................................................................294Working with RAM memory.................................................................................................295RAM Utilization...............................................................................................................297Heap diagnosis / memory leaks......................................................................................298Heap corruption..........................................................................................................300Using PSRAM.................................................................................................................303EFUSE................................................................................................................................305EFuse #3 – 0x6001a00c.................................................................................................306Button press detection.........................................................................................................306GPS....................................................................................................................................308GPS decoding.................................................................................................................310Temperature and pressure – BMP180.................................................................................311Using the Arduino APIs...................................................................................................313NeoPixels............................................................................................................................313NeoPixel theory..............................................................................................................313NeoPixels and the ESP32...............................................................................................316APA102...........................................................................................................................317LED 7-Segment displays.....................................................................................................317MAX7219/MAX7221 – Serial interface, 8-digit, led display drivers..................................318The U8g2 library..................................................................................................................322LCD display – Nokia 5110 – PCD8544................................................................................323OLED 128x32, 128x64 – SSD1306.....................................................................................325TFT displays........................................................................................................................327Ambient light level sensor – BH1750FVI.............................................................................328Ambient light and proximity sensor......................................................................................330Infrared receivers................................................................................................................331RFID MFRC522...................................................................................................................333Page 6MFRC522 – Low levels...................................................................................................335Initialization................................................................................................................338AntennaOn.................................................................................................................339Cameras..............................................................................................................................339Ivan's sample..................................................................................................................339OV7670..........................................................................................................................341Accelerometer and Gyroscope – MPU-6050 (aka GY-521).................................................341The math of accelerometers...........................................................................................347Visualizing orientation.....................................................................................................348Compass – HMC5883L (aka GY-271) (aka CJ-M49)...........................................................348Tilt compensation of the compass...................................................................................354Real time clocks..................................................................................................................355Servos.................................................................................................................................358The Mini/Micro SG90......................................................................................................360Audio...................................................................................................................................360PCM5102 – I2S DAC......................................................................................................360Graphic Equalizer...........................................................................................................361External networking.............................................................................................................364The nRF24......................................................................................................................364Using the Arduino APIs...............................................................................................370Integrating the nRF24 with the ESP32.......................................................................377Programming using Eclipse.....................................................................................................380Installing the Eclipse Serial terminal....................................................................................390Web development using Eclipse..........................................................................................395Programming using the Arduino IDE........................................................................................396Mapping from the Arduino to the ESP32.............................................................................397Implications of Arduino IDE support.....................................................................................398Installing the Arduino IDE with ESP32 support....................................................................399Using the Arduino libraries as an ESP-IDF component.......................................................401Tips for working in the Arduino environment........................................................................402Initialize global classes in setup()....................................................................................402Invoking Espressif SDK API from a sketch......................................................................402Reasons to consider using Eclipse over Arduino IDE.....................................................403Programming with JavaScript..................................................................................................403Duktape...............................................................................................................................404Compiling code...............................................................................................................405Building for ESP32..........................................................................................................405Integrating Duktape in an ESP32 application..................................................................405The Duktape stack..........................................................................................................406Working with object properties........................................................................................406Calling C from a JavaScript program..............................................................................406JerryScript...........................................................................................................................407Page 7Platform specific files......................................................................................................407JerryScript life-cycle........................................................................................................408Accessing the global environment..................................................................................408The jerry_value_t............................................................................................................408Handling errors...............................................................................................................409Interfacing JerryScript with C..........................................................................................409IoT.js....................................................................................................................................410Programming with Python........................................................................................................410Pycom Micropython.............................................................................................................410Programming with Lua.............................................................................................................410Lua-RTOS for ESP32..........................................................................................................410Integration with Web Apps........................................................................................................411HTTP Protocol.....................................................................................................................411HTTP Headers................................................................................................................411Accept header............................................................................................................411Authorization header..................................................................................................411Connection header.....................................................................................................412Content-Length header..............................................................................................412Content-Type header..................................................................................................412Host header................................................................................................................412User-Agent header.....................................................................................................412Web Servers........................................................................................................................412Mongoose networking library..........................................................................................413Setting up Mongoose on an ESP32...........................................................................416Sending a request from Mongoose............................................................................417The Mongoose struct mg_connection........................................................................417Handling file uploads..................................................................................................417GoAhead Web Server.....................................................................................................418JavaScript Webserver.....................................................................................................419REST Services....................................................................................................................419REST protocol................................................................................................................419ESP32 as a REST client.................................................................................................420Making a REST request using Curl............................................................................420Making a REST request using Mongoose..................................................................425ESP32 as a REST service provider................................................................................425WebSockets........................................................................................................................425A WebSocket browser app..............................................................................................426Mongoose WebSocket....................................................................................................428Other Websocket implementations.................................................................................429Tasker..................................................................................................................................429AutoRemote........................................................................................................................429DuckDNS............................................................................................................................431Networking protocols...............................................................................................................432MQTT..................................................................................................................................432Page 8Mosquitto MQTT.............................................................................................................434Installing on Windows.................................................................................................436Writing ESP32 MQTT clients..........................................................................................438Using Mongoose as an MQTT client..........................................................................438Using Espruino as an MQTT client.............................................................................440Writing non ESP32 MQTT clients...................................................................................440Eclipse paho...............................................................................................................441C – Mosquitto client library.........................................................................................442Node.js JavaScript – MQTT.......................................................................................444Browser JavaScript – MQTT......................................................................................445CoAP – Constrained Application Protocol............................................................................447FTP.....................................................................................................................................449TFTP...................................................................................................................................449Telnet...................................................................................................................................450DNS Protocol......................................................................................................................452Mobile apps.............................................................................................................................455Blynk...................................................................................................................................455Cloud environments.................................................................................................................459IBM Bluemix........................................................................................................................459If This Then That – IFTTT....................................................................................................460Storage programming..............................................................................................................461Partition table......................................................................................................................461Non Volatile Storage............................................................................................................465Virtual File System..............................................................................................................466VFS Implementations......................................................................................................467FATFS File System..............................................................................................................468Spiffs File System................................................................................................................469Building SPIFFs for the ESP32.......................................................................................471mkspiffs tool....................................................................................................................471The ESP File System – EspFs............................................................................................472SD, MMC and SDIO interfacing...........................................................................................474ZIP files...............................................................................................................................475zlib..................................................................................................................................475miniz...............................................................................................................................475kuba--/zip........................................................................................................................476Charting data...........................................................................................................................476Kst.......................................................................................................................................477Sample Snippets......................................................................................................................478Sample applications.................................................................................................................478Sample – Ultrasonic distance measurement.......................................................................479Sample – WiFi Scanner.......................................................................................................482Sample – A changeable mood light.....................................................................................482Page 9Using FreeRTOS.....................................................................................................................487The architecture of a task in FreeRTOS..............................................................................488Stacks and FreeRTOS tasks...........................................................................................490Timers in FreeRTOS............................................................................................................493Blocking and synchronization within FreeRTOS..................................................................493Semaphores and Mutices within FreeRTOS........................................................................495Queues within FreeRTOS...................................................................................................496Ring buffer withing FreeRTOS.............................................................................................497Working with queue sets.....................................................................................................498Monitoring capabilities.........................................................................................................499Running untested functions.................................................................................................500The Serial AT command processor..........................................................................................500Mongoose OS..........................................................................................................................501The Mongoose OS file system............................................................................................503Setting up Mongoose OS WiFi............................................................................................503Building a Mongoose OS App..............................................................................................503AWS IoT..................................................................................................................................503The ESP-IDF aws_iot component.......................................................................................505Using the TI CC2650 SensorTag..............................................................................................506IR Temperature Sensor.......................................................................................................509Humidity Service.................................................................................................................510Ambient light sensor............................................................................................................510Key Press............................................................................................................................510Developing solutions on Linux..................................................................................................511Building a Linux environment..........................................................................................512Hardware architecture..............................................................................................................513The CPU and cores.............................................................................................................513Intrinsic data types..............................................................................................................513Native byte order, endian and network byte order...............................................................513Memory mapping and address spaces................................................................................515Reading and writing registers..............................................................................................516Pads and multiplexing.........................................................................................................517Register based GPIO..........................................................................................................520GPIO_OUT_REG...........................................................................................................522GPIO_OUT_W1TS_REG................................................................................................522GPIO_OUT_W1TC_REG...............................................................................................522GPIO_OUT1_REG.........................................................................................................523GPIO_OUT1_W1TS_REG..............................................................................................523GPIO_OUT1_W1TC_REG.............................................................................................523GPIO_ENABLE_REG.....................................................................................................523GPIO_ENABLE_W1TS_REG.........................................................................................523GPIO_ENABLE_W1TC_REG.........................................................................................523GPIO_ENABLE1_REG...................................................................................................523GPIO_ENABLE1_W1TS_REG.......................................................................................524Page 10GPIO_ENABLE1_W1TC_REG.......................................................................................524GPIO_STRAP_REG.......................................................................................................524GPIO_IN_REG...............................................................................................................524GPIO_IN1_REG.............................................................................................................524GPIO_STATUS_REG.....................................................................................................524GPIO_STATUS_W1TS_REG..........................................................................................525GPIO_STATUS_W1TC_REG.........................................................................................525GPIO_STATUS1_REG...................................................................................................525GPIO_STATUS1_W1TS_REG........................................................................................525GPIO_STATUS1_W1TC_REG.......................................................................................525GPIO_PCPU_NMI_INT1_REG.......................................................................................525GPIO_PCPU_NMI_INT1_REG.......................................................................................525GPIO_PINn_REG...........................................................................................................525GPIO_FUNCm_IN_SEL_CFG_REG..............................................................................525GPIO_FUNCn_OUT_SEL_CFG_REG...........................................................................526Strapping pins.....................................................................................................................526Boot mode source...........................................................................................................527Debugging on U0TX0 at boot.........................................................................................527Timing of SDIO slave......................................................................................................527Boot-loader..........................................................................................................................527Power modes......................................................................................................................529Bootloader...........................................................................................................................530Peripherals..........................................................................................................................530Remote Control Peripheral – RMT..................................................................................530SPI..................................................................................................................................534PID Controller.................................................................................................................534UART..............................................................................................................................534I2S..................................................................................................................................535I2S Clock....................................................................................................................535Camera mode............................................................................................................535Registers....................................................................................................................539I2S_CONF_REG........................................................................................................541I2S_CONF2_REG......................................................................................................541I2S_CLKM_CONF_REG............................................................................................542I2S_CONF_CHAN_REG............................................................................................542I2S_LC_CONF_REG.................................................................................................542I2S_FIFO_CONF_REG..............................................................................................542I2S_IN_LINK_REG....................................................................................................543I2S_RXEOF_NUM_REG............................................................................................543I2S_CONF_CHAN_REG............................................................................................543I2S_SAMPLE_RATE_CONF_REG............................................................................544I2S_INT_RAW_REG..................................................................................................544Page 11I2S_INT_ENA_REG...................................................................................................544I2S_INT_CLR_REG...................................................................................................545RTC................................................................................................................................546RTCIO_RTC_GPIO_OUT_DATA...............................................................................546RTCIO_RTC_GPIO_OUT_DATA_W1TS....................................................................546RTCIO_RTC_GPIO_OUT_DATA_W1TC...................................................................546RTCIO_RTC_GPIO_ENABLE....................................................................................546RTCIO_RTC_GPIO_ENABLE_W1TS........................................................................546RTCIO_RTC_GPIO_ENABLE_W1TC........................................................................546RTCIO_RTC_GPIO_STATUS_INT.............................................................................546RTCIO_RTC_GPIO_STATUS_INT_W1TS.................................................................546RTCIO_RTC_GPIO_STATUS_INT_W1TC.................................................................546RTCIO_RTC_GPIO_IN_NEXT...................................................................................546RTCIO_RTC_GPIO_PINn_WAKEUP_ENABLE.........................................................547RTCIO_RTC_GPIO_PINn_INT_TYPE.......................................................................547RTCIO_RTC_GPIO_PINn_PAD_DRIVER..................................................................547RTCIO_DIG_PAD_HOLD_REG.................................................................................547RTCIO_HALL_XPD_HALL.........................................................................................547RTCIO_HALL_PHASE...............................................................................................547RTCIO_SENSOR_SENSEn_HOLD...........................................................................547RTCIO_SENSOR_SENSEn_MUX_SEL....................................................................547RTCIO_SENSOR_SENSEn_FUN_SEL.....................................................................547RTCIO_SENSOR_SENSEn_SLP_SEL......................................................................547RTCIO_SENSOR_SENSEn_SLP_IE.........................................................................547RTCIO_SENSOR_SENSEn_FUN_IE........................................................................547RTCIO_ADC_ADCn_HOLD.......................................................................................547RTCIO_ADC_ADCn_MUX_SEL................................................................................547RTCIO_ADC_ADCn_FUN_SEL.................................................................................547RTCIO_ADC_ADCn_SLP_SEL..................................................................................547RTCIO_ADC_ADCn_SLP_IE.....................................................................................547RTCIO_ADC_ADCn_FUN_IE....................................................................................547RTCIO_PAD_PDAC1_DRV........................................................................................547RTCIO_PAD_PDAC1_HOLD.....................................................................................547RTCIO_PAD_PDAC1_RDE........................................................................................547RTCIO_PAD_PDAC1_RUE........................................................................................547RTCIO_PAD_PDAC1_DAC........................................................................................547RTCIO_PAD_PDAC1_XPD_DAC..............................................................................547RTCIO_PAD_PDAC1_MUX_SEL...............................................................................547RTCIO_PAD_PDAC1_FUN_SEL...............................................................................547RTCIO_PAD_PDAC1_SLP_SEL................................................................................547RTCIO_PAD_PDAC1_SLP_IE...................................................................................548RTCIO_PAD_PDAC1_SLP_OE.................................................................................548RTCIO_PAD_PDAC1_FUN_IE..................................................................................548RTCIO_PAD_PDAC1_DAC_XPD_FORCE................................................................548Page 12ULP Processor.........................................................................................................................548Preparing a ULP co-processor environment........................................................................549ULP Instruction set..............................................................................................................549NOP – No operation........................................................................................................551ADD – Add to a register..................................................................................................551SUB – Subtract from register..........................................................................................551AND – Logical AND of two operands..............................................................................552OR – Logical OR of two operands..................................................................................552LSH – Logical Shift Left..................................................................................................552RSH – Logical Shift Right...............................................................................................552MOVE – Move to register................................................................................................552ST – Store data to memory.............................................................................................553LD – Load data from memory.........................................................................................553JUMP – Jump to an absolute address............................................................................553JUMPR – Jump relative with condition............................................................................553JUMPS – Jump relative based on stage count...............................................................554STAGE_RST – Reset the stage count register...............................................................554STAGE_INC – Increment the stage count register..........................................................554STAGE_DEC – Decrement the stage count register.......................................................554HALT – End the program................................................................................................554WAKE – Wakeup the chip...............................................................................................554SLEEP – Set the ULP wakeup timer period....................................................................554WAIT – Wait some number of cycles..............................................................................554TSENS – Do measurement with the temperature sensor...............................................555ADC – Do measurement with ADC.................................................................................555REG_RD – Read from peripheral register.......................................................................555REG_WR – Write to peripheral register..........................................................................555ULP co-processor assembler coding...................................................................................556Loading and starting a ULP co-processor application..........................................................557Waking up the ULP co-processor........................................................................................558Peripheral registers for ULP co-processor...........................................................................558SENS_ULP_CP_SLEEP_CYC0_REG...........................................................................558SENS_ULP_CP_SLEEP_CYC1_REG...........................................................................558SENS_ULP_CP_SLEEP_CYC2_REG...........................................................................558SENS_ULP_CP_SLEEP_CYC3_REG...........................................................................558SENS_ULP_CP_SLEEP_CYC4_REG...........................................................................559SENS_SAR_START_FORCE_REG...............................................................................559Electronics...............................................................................................................................560Transistors as switches.......................................................................................................560Logic Level Shifting.............................................................................................................561Projects....................................................................................................................................563JerryScript library for ESP32...............................................................................................563Page 13The "require" capability...................................................................................................563API Reference.........................................................................................................................563Configuration, status and operational retrieval....................................................................564Arduino Mapping.................................................................................................................565bitRead...........................................................................................................................565bitWrite...........................................................................................................................565delay...............................................................................................................................565digitalWrite......................................................................................................................565pinMode..........................................................................................................................566SPI.begin........................................................................................................................566SPI.setBitOrder...............................................................................................................566SPI.setClockDivider........................................................................................................567SPI.setDataMode............................................................................................................567SPI.transfer.....................................................................................................................567Wire.begin......................................................................................................................567Wire.beginTransmission..................................................................................................568Wire.endTransmission....................................................................................................568Wire.read........................................................................................................................568Wire.requestFrom...........................................................................................................568Wire.write........................................................................................................................568FreeRTOS API reference....................................................................................................568portENABLE_INTERRUPTS...........................................................................................568portDISABLE_INTERRUPTS..........................................................................................569xPortGetCoreID..............................................................................................................569pvPortMalloc...................................................................................................................569pvPortFree......................................................................................................................569xPortGetFreeHeapSize()................................................................................................569xEventGroupClearBits....................................................................................................569xEventGroupCreate........................................................................................................570xEventGroupCreateStatic...............................................................................................570xEventGroupSetBits.......................................................................................................570xEventGroupWaitBits......................................................................................................571xQueueAddToSet............................................................................................................571xQueueCreate................................................................................................................572xQueueCreateSet...........................................................................................................572xQueueCreateStatic.......................................................................................................572vQueueDelete.................................................................................................................573xQueueGenericReceive..................................................................................................573uxQueueMessagesWaiting.............................................................................................573xQueueOverwrite............................................................................................................574xQueuePeek...................................................................................................................574xQueuePeekFromISR.....................................................................................................574xQueueReceive..............................................................................................................574xQueueReceiveFromISR................................................................................................575Page 14xQueueRemoveFromSet................................................................................................575xQueueReset..................................................................................................................575xQueueSelectFromSet....................................................................................................575xQueueSelectFromSetFromISR.....................................................................................575xQueueSend...................................................................................................................576xQueueSendFromISR.....................................................................................................576xQueueSendToBack.......................................................................................................576xQueueSendToBackFromISR.........................................................................................576xQueueSendToFront.......................................................................................................577xQueueSendToFrontFromISR........................................................................................578uxQueueSpacesAvailable...............................................................................................578xRingbufferAddToQueueSetRead...................................................................................578xRingbufferAddToQueueSetWrite...................................................................................578xRingbufferCreate...........................................................................................................578vRingbufferDelete...........................................................................................................579xRingbufferGetMaxItemSize...........................................................................................579xRingBufferPrintInfo........................................................................................................579xRingbufferReceive.........................................................................................................579xRingbufferReceiveFromISR..........................................................................................580xRingbufferReceiveUpTo................................................................................................580xRingbufferReceiveUpToFromISR..................................................................................580xRingbufferRemoveFromQueueSetRead.......................................................................580xRingbufferRemoveFromQueueSetWrite........................................................................580vRingbufferReturnItem....................................................................................................580vRingbufferReturnItemFromISR......................................................................................581xRingbufferSend.............................................................................................................581xRingbufferSendFromISR...............................................................................................581vSemaphoreCreateBinary...............................................................................................582xSemaphoreCreateCounting..........................................................................................582xSemaphoreCreateMutex...............................................................................................582vSemaphoreDelete.........................................................................................................582uxSemaphoreGetCount..................................................................................................583xSemaphoreGive............................................................................................................583xSemaphoreGiveFromISR..............................................................................................583xSemaphoreTake............................................................................................................583xTaskCreate....................................................................................................................584xTaskCreatePinnedToCore.............................................................................................585vTaskDelay.....................................................................................................................586vTaskDelayUntil..............................................................................................................586vTaskDelete....................................................................................................................587vTaskGetInfo...................................................................................................................587xTaskGetCurrentTaskHandle..........................................................................................588Page 15pcTaskGetTaskName......................................................................................................588uxTaskGetNumberOfTasks.............................................................................................588eTaskGetState................................................................................................................588uxTaskGetSystemState...................................................................................................589xTaskGetTickCount.........................................................................................................590xTaskGetTickCountFromISR...........................................................................................590vEventGroupDelete........................................................................................................590vTaskList.........................................................................................................................590uxTaskPriorityGet............................................................................................................591vTaskPrioritySet..............................................................................................................591vTaskResume.................................................................................................................591xTaskResumeAll.............................................................................................................591vTaskResumeFromISR...................................................................................................591vTaskSuspend................................................................................................................592vTaskSuspendAll............................................................................................................592xTimerChangePeriod......................................................................................................592xTimerChangePeriodFromISR........................................................................................593xTimerCreate..................................................................................................................593xTimerCreateStatic.........................................................................................................594xTimerDelete..................................................................................................................594pcTimerGetName............................................................................................................594xTimerGetExpiryTime.....................................................................................................594xTimerGetPeriod.............................................................................................................595pvTimerGetTimerDaemonTaskHandle............................................................................595pvTimerGetTimerID.........................................................................................................596xTimerIsTimerActive.......................................................................................................596xTimerPendFunctionCall.................................................................................................596xTimerPendFunctionCallFromISR...................................................................................597xTimerReset...................................................................................................................597xTimerResetFromISR.....................................................................................................597vTimerSetTimerID...........................................................................................................597xTimerStart.....................................................................................................................598xTimerStartFromISR.......................................................................................................598xTimerStop.....................................................................................................................598xTimerStopFromISR.......................................................................................................599List Processing...............................................................................................................599vListInitialise...............................................................................................................599vListInitialiseItem........................................................................................................599vListInsert...................................................................................................................599vListInsertEnd............................................................................................................599Sockets APIs.......................................................................................................................599accept.............................................................................................................................600bind.................................................................................................................................600close...............................................................................................................................601Page 16closesocket.....................................................................................................................601connect...........................................................................................................................602fcntl.................................................................................................................................602freeaddrinfo....................................................................................................................602getaddrinfo......................................................................................................................603gethostbyname...............................................................................................................604gethostbyname_r............................................................................................................605getpeername...................................................................................................................605getsockname..................................................................................................................605getsockopt......................................................................................................................606htonl................................................................................................................................606htons...............................................................................................................................606inet_ntop.........................................................................................................................606inet_pton.........................................................................................................................607ioctlsocket.......................................................................................................................607listen...............................................................................................................................607read................................................................................................................................608recv.................................................................................................................................608recvfrom..........................................................................................................................609select..............................................................................................................................610send................................................................................................................................610sendmsg.........................................................................................................................611sendto.............................................................................................................................611setsockopt.......................................................................................................................611shutdown........................................................................................................................612socket.............................................................................................................................612write................................................................................................................................613writev..............................................................................................................................613Socket data structures....................................................................................................613Sockets – struct sockaddr..........................................................................................613Sockets – struct sockaddr_in.....................................................................................613Working with WiFi................................................................................................................614DNS.....................................................................................................................................615dns_getserver.................................................................................................................615dns_setserver.................................................................................................................615System Functions................................................................................................................616esp_chip_info..................................................................................................................616esp_cpu_in_ocd_debug_mode.......................................................................................616esp_deregister_freertos_idle_hook.................................................................................617esp_deregister_freertos_tick_hook.................................................................................617esp_efuse_read_mac.....................................................................................................617esp_get_free_heap_size.................................................................................................617Page 17esp_get_idf_version........................................................................................................617esp_ipc_call....................................................................................................................618esp_ipc_call_blocking.....................................................................................................618esp_random....................................................................................................................618esp_register_freertos_idle_hook.....................................................................................618esp_register_freertos_idle_hook_for_cpu.......................................................................619esp_register_freertos_tick_hook.....................................................................................619esp_register_freertos_tick_hook_for_cpu.......................................................................619esp_restart......................................................................................................................619esp_sleep_get_wakeup_cause.......................................................................................619ets_delay_us...................................................................................................................620system_rtc_mem_write...................................................................................................620rtc_get_reset_reason......................................................................................................620software_reset................................................................................................................621software_reset_cpu........................................................................................................621system_deep_sleep........................................................................................................621system_get_time.............................................................................................................622system_restore...............................................................................................................622system_rtc_mem_read...................................................................................................622system_rtc_mem_write...................................................................................................623system_rtc_mem_read...................................................................................................623WiFi.....................................................................................................................................623esp_event_loop_init........................................................................................................623esp_event_loop_set_cb..................................................................................................623esp_wifi_ap_get_sta_list.................................................................................................624esp_wifi_clear_fast_connect...........................................................................................624esp_wifi_connect............................................................................................................624esp_wifi_deauth_sta.......................................................................................................625esp_wifi_deinit................................................................................................................625esp_wifi_disconnect........................................................................................................625esp_wifi_free_station_list................................................................................................626esp_wifi_get_auto_connect............................................................................................626esp_wifi_get_bandwidth..................................................................................................626esp_wifi_get_channel.....................................................................................................626esp_wifi_get_config........................................................................................................627esp_wifi_get_country......................................................................................................627esp_wifi_get_mac...........................................................................................................628esp_wifi_get_mode.........................................................................................................628esp_wifi_get_promiscuous..............................................................................................628esp_wifi_get_protocol.....................................................................................................629esp_wifi_get_ps..............................................................................................................629esp_wifi_get_station_list.................................................................................................630esp_wifi_init....................................................................................................................630esp_wifi_restore..............................................................................................................631Page 18esp_wifi_reg_rxcb...........................................................................................................631esp_wifi_scan_get_ap_records.......................................................................................631esp_wifi_scan_get_ap_num...........................................................................................632esp_wifi_scan_start........................................................................................................633esp_wifi_scan_stop........................................................................................................633esp_wifi_set_auto_connect.............................................................................................634esp_wifi_set_bandwidth..................................................................................................634esp_wifi_set_channel......................................................................................................634esp_wifi_set_config........................................................................................................635esp_wifi_set_country......................................................................................................637esp_wifi_set_mac...........................................................................................................637esp_wifi_set_mode.........................................................................................................638esp_wifi_set_promiscuous_rx_cb...................................................................................638esp_wifi_set_promiscuous..............................................................................................638esp_wifi_set_protocol.....................................................................................................639esp_wifi_set_ps..............................................................................................................639esp_wifi_set_storage......................................................................................................639esp_wifi_set_vendor_ie..................................................................................................640esp_wifi_set_vendor_ie_cb.............................................................................................640esp_wifi_sta_get_ap_info...............................................................................................640esp_wifi_start..................................................................................................................641esp_wifi_stop..................................................................................................................641WiFi WPS............................................................................................................................641wifi_wps_enable.............................................................................................................641wifi_wps_disable.............................................................................................................642wifi_wps_start.................................................................................................................642wifi_set_wps_cb..............................................................................................................642mbed TLS............................................................................................................................642mbedtls_ctr_drbg_free....................................................................................................643mbedtls_ctr_drbg_init......................................................................................................643mbedtls_ctr_drbg_seed..................................................................................................643mbedtls_debug_set_threshold........................................................................................643mbedtls_entropy_free.....................................................................................................644mbedtls_entropy_init.......................................................................................................644mbedtls_net_accept........................................................................................................644mbedtls_net_bind...........................................................................................................645mbedtls_net_connect......................................................................................................645mbedtls_net_free............................................................................................................645mbedtls_net_init..............................................................................................................646mbedtls_net_recv...........................................................................................................646mbedtls_net_recv_timeout..............................................................................................646mbedtls_net_send..........................................................................................................647Page 19mbedtls_net_set_block...................................................................................................647mbedtls_net_set_nonblock.............................................................................................647mbedtls_pk_get_name....................................................................................................647mbedtls_pk_parse_key...................................................................................................647mbedtls_printf.................................................................................................................648mbedtls_sha1.................................................................................................................648mbedtls_rsa_init..............................................................................................................648mbedtls_ssl_close_notify................................................................................................648mbedtls_ssl_conf_authmode..........................................................................................648mbedtls_ssl_conf_ca_chain............................................................................................649mbedtls_ssl_conf_dbg....................................................................................................649mbedtls_ssl_conf_rng.....................................................................................................649mbedtls_ssl_config_defaults...........................................................................................650mbedtls_ssl_config_free.................................................................................................650mbedtls_ssl_config_init...................................................................................................650mbedtls_ssl_free.............................................................................................................651mbedtls_ssl_get_verify_result.........................................................................................651mbedtls_ssl_handshake.................................................................................................651mbedtls_ssl_init..............................................................................................................651mbedtls_ssl_read............................................................................................................651mbedtls_ssl_session_reset.............................................................................................652mbedtls_ssl_set_bio.......................................................................................................652mbedtls_ssl_set_hostname............................................................................................652mbedtls_ssl_setup..........................................................................................................653mbedtls_ssl_write...........................................................................................................653mbedtls_strerror..............................................................................................................653mbedtls_x509_crt_init.....................................................................................................654mbedtls_x509_crt_parse.................................................................................................654mbedtls_x509_crt_veryify_info.......................................................................................654Bluetooth LE........................................................................................................................654esp_bt_uuid_t.................................................................................................................654esp_attr_value_t.............................................................................................................655esp_gatt_id_t..................................................................................................................655esp_gatt_srvc_id_t..........................................................................................................655esp_gatt_status_t...........................................................................................................656esp_gattc_char_elem_t...................................................................................................657esp_gattc_db_elem_t.....................................................................................................658esp_gattc_descr_elem_t.................................................................................................658esp_gattc_service_elem_t..............................................................................................658esp_ble_gap_config_adv_data.......................................................................................659esp_ble_gap_config_adv_data_raw...............................................................................661esp_ble_gap_config_scan_rsp_data_raw.......................................................................661esp_ble_gap_config_local_privacy.................................................................................661esp_ble_gap_disconnect................................................................................................661Page 20esp_ble_gap_get_whitelist_size.....................................................................................661esp_ble_gap_read_rssi...................................................................................................662esp_ble_gap_register_callback.......................................................................................662ESP_GAP_BLE_ADD_WHITELIST_COMPLETE_EVT.............................................662ESP_GAP_BLE_ADV_DATA_SET_COMPLETE_EVT..............................................662ESP_GAP_BLE_ADV_DATA_RAW_SET_COMPLETE_EVT....................................663ESP_GAP_BLE_ADV_START_COMPLETE_EVT.....................................................663ESP_GAP_BLE_ADV_STOP_COMPLETE_EVT......................................................663ESP_GAP_BLE_AUTH_CMPL_EVT.........................................................................663ESP_GAP_BLE_CLEAR_BOND_DEV_COMPLETE_EVT........................................663ESP_GAP_BLE_GET_BOND_DEV_COMPLETE_EVT.............................................664ESP_GAP_BLE_KEY_EVT........................................................................................664ESP_GAP_BLE_LOCAL_ER_EVT............................................................................664ESP_GAP_BLE_LOCAL_IR_EVT..............................................................................664ESP_GAP_BLE_NC_REQ_EVT................................................................................664ESP_GAP_BLE_OOB_REQ_EVT.............................................................................664ESP_GAP_BLE_PASSKEY_NOTIF_EVT..................................................................664ESP_GAP_BLE_PASSKEY_REQ_EVT.....................................................................664ESP_GAP_BLE_READ_RSSI_COMPLETE_EVT.....................................................664ESP_GAP_BLE_REMOVE_BOND_DEV_COMPLETE_EVT....................................665ESP_GAP_BLE_SCAN_PARAM_SET_COMPLETE_EVT........................................665ESP_GAP_BLE_SCAN_RESULT_EVT.....................................................................665ESP_GAP_BLE_SCAN_RSP_DATA_RAW_SET_COMPLETE_EVT........................666ESP_GAP_BLE_SCAN_RSP_DATA_SET_COMPLETE_EVT..................................666ESP_GAP_BLE_SCAN_START_COMPLETE_EVT..................................................667ESP_GAP_BLE_SCAN_STOP_COMPLETE_EVT....................................................667ESP_GAP_BLE_SEC_REQ_EVT..............................................................................667ESP_GAP_BLE_SET_LOCAL_PRIVACY_COMPLETE_EVT....................................668ESP_GAP_BLE_SET_PKT_LENGTH_COMPLETE_EVT.........................................668ESP_GAP_BLE_SET_STATIC_RAND_ADDR_EVT..................................................668ESP_GAP_BLE_UPDATE_CONN_PARAMS_EVT....................................................668esp_ble_gap_security_rsp..............................................................................................669esp_ble_gap_set_device_name.....................................................................................669esp_ble_set_encryption..................................................................................................669esp_ble_gap_set_pkt_data_len......................................................................................669esp_ble_gap_set_prefer_conn_params..........................................................................670esp_ble_gap_set_rand_addr..........................................................................................670esp_ble_gap_set_security_param..................................................................................670esp_ble_gap_set_scan_params.....................................................................................671esp_ble_gap_start_advertising.......................................................................................672esp_ble_gap_start_scanning..........................................................................................673esp_ble_gap_stop_advertising.......................................................................................674Page 21esp_ble_gap_stop_scanning..........................................................................................674esp_ble_gap_update_conn_params...............................................................................674esp_ble_gap_update_whitelist........................................................................................675esp_ble_gattc_app_register............................................................................................675esp_ble_gattc_app_unregister........................................................................................675esp_ble_gattc_close.......................................................................................................676esp_ble_gattc_cache_refresh.........................................................................................676esp_ble_gattc_config_mtu..............................................................................................676esp_ble_gattc_execute_write.........................................................................................676esp_ble_gattc_get_all_char............................................................................................676esp_ble_gattc_get_all_descr..........................................................................................678esp_ble_gattc_get_attr_count.........................................................................................678esp_ble_gattc_get_char_by_uuid...................................................................................679esp_ble_gattc_get_characteristic....................................................................................680esp_ble_gattc_get_db.....................................................................................................681esp_ble_gattc_get_descr_by_char_handle.....................................................................681esp_ble_gattc_get_descr_by_uuid.................................................................................682esp_ble_gattc_get_descriptor.........................................................................................682esp_ble_gattc_get_include_service................................................................................683esp_ble_gattc_get_included_service..............................................................................683esp_ble_gattc_get_service.............................................................................................684esp_ble_gattc_open.......................................................................................................684esp_ble_gattc_prepare_write..........................................................................................685esp_ble_gattc_prepare_write_char_descr......................................................................685esp_ble_gattc_read_char...............................................................................................686esp_ble_gattc_read_char_descr.....................................................................................686esp_ble_gattc_read_multiple..........................................................................................687esp_ble_gattc_register_callback.....................................................................................687ESP_GATTC_ACL_EVT............................................................................................690ESP_GATTC_ADV_DATA_EVT.................................................................................690ESP_GATTC_ADV_VSC_EVT...................................................................................690ESP_GATTC_BTH_SCAN_CFG_EVT.......................................................................690ESP_GATTC_BTH_SCAN_DIS_EVT........................................................................690ESP_GATTC_BTH_SCAN_ENB_EVT.......................................................................690ESP_GATTC_BTH_SCAN_PARAM_EVT..................................................................690ESP_GATTC_BTH_SCAN_RD_EVT.........................................................................690ESP_GATTC_BTH_SCAN_THR_EVT.......................................................................690ESP_GATTC_CANCEL_OPEN_EVT.........................................................................690ESP_GATTC_CFG_MTU_EVT..................................................................................690ESP_GATTC_CLOSE_EVT.......................................................................................690ESP_GATTC_CONGEST_EVT..................................................................................691ESP_GATTC_CONNECT_EVT..................................................................................691ESP_GATTC_DISCONNECT_EVT............................................................................691ESP_GATTC_ENC_CMPL_CB_EVT.........................................................................692Page 22ESP_GATTC_EXEC_EVT..........................................................................................692ESP_GATTC_GET_CHAR_EVT................................................................................692ESP_GATTC_GET_DESCR_EVT..............................................................................693ESP_GATTC_GET_INCL_SRVC_EVT......................................................................693ESP_GATTC_MULT_ADV_DATA_EVT......................................................................693ESP_GATTC_MULT_ADV_DIS_EVT.........................................................................694ESP_GATTC_MULT_ADV_ENB_EVT.......................................................................694ESP_GATTC_MULT_ADV_UPD_EVT.......................................................................694ESP_GATTC_NOTIFY_EVT......................................................................................694ESP_GATTC_OPEN_EVT.........................................................................................694ESP_GATTC_PREP_WRITE_EVT............................................................................695ESP_GATTC_READ_CHAR_EVT.............................................................................695ESP_GATTC_READ_DESC_EVT..............................................................................695ESP_GATTC_REG_EVT............................................................................................695ESP_GATTC_REG_FOR_NOTIFY_EVT...................................................................695ESP_GATTC_SEARCH_CMPL_EVT.........................................................................696ESP_GATTC_SEARCH_RES_EVT...........................................................................696ESP_GATTC_SCAN_FLT_CFG_EVT........................................................................697ESP_GATTC_SCAN_FLT_PARAM_EVT...................................................................697ESP_GATTC_SCAN_FLT_STATUS_EVT..................................................................697ESP_GATTC_SRVC_CHG_EVT................................................................................697ESP_GATTC_UNREG_EVT......................................................................................697ESP_GATTC_UNREG_FOR_NOTIFY_EVT..............................................................697ESP_GATTC_WRITE_CHAR_EVT............................................................................697esp_ble_gattc_register_for_notify...................................................................................698esp_ble_gattc_unregister_for_notify...............................................................................698esp_ble_gattc_search_service.......................................................................................699esp_ble_gattc_write_char...............................................................................................699esp_ble_gattc_write_char_descr....................................................................................700esp_ble_gatts_add_char.................................................................................................701esp_ble_gatts_add_char_descr......................................................................................703esp_ble_gatts_add_included_service.............................................................................704esp_ble_gatts_app_register............................................................................................704esp_ble_gatts_app_unregister........................................................................................704esp_ble_gatts_close.......................................................................................................704esp_ble_gatts_create_attribute_tab................................................................................705esp_ble_gatts_create_service........................................................................................705esp_ble_gatts_delete_service........................................................................................708esp_ble_gatts_get_attr_value.........................................................................................708esp_ble_gatts_open.......................................................................................................708esp_ble_gatts_register_callback.....................................................................................708ESP_GATTS_ADD_CHAR_DESCR_EVT.................................................................709Page 23ESP_GATTS_ADD_CHAR_EVT................................................................................710ESP_GATTS_ADD_INCL_SRVC_EVT......................................................................710ESP_GATTS_CANCEL_OPEN_EVT.........................................................................710ESP_GATTS_CLOSE_EVT.......................................................................................710ESP_GATTS_CONF_EVT.........................................................................................710ESP_GATTS_CONGEST_EVT..................................................................................711ESP_GATTS_CONNECT_EVT..................................................................................711ESP_GATTS_CREAT_ATTR_TAB_EVT....................................................................711ESP_GATTS_CREATE_EVT.....................................................................................712ESP_GATTS_DELETE_EVT......................................................................................712ESP_GATTS_DISCONNECT_EVT............................................................................712ESP_GATTS_EXEC_WRITE_EVT............................................................................713ESP_GATTS_LISTEN_EVT.......................................................................................713ESP_GATTS_MTU_EVT............................................................................................713ESP_GATTS_OPEN_EVT.........................................................................................713ESP_GATTS_READ_EVT..........................................................................................714ESP_GATTS_REG_EVT............................................................................................714ESP_GATTS_RESPONSE_EVT................................................................................714ESP_GATTS_SET_ATTR_VAL_EVT.........................................................................714ESP_GATTS_START_EVT........................................................................................715ESP_GATTS_STOP_EVT..........................................................................................715ESP_GATTS_UNREG_EVT.......................................................................................715ESP_GATTS_WRITE_EVT........................................................................................715esp_ble_gatts_send_indicate.........................................................................................717esp_ble_gatts_send_response.......................................................................................717esp_ble_gatts_set_attr_value.........................................................................................719esp_ble_gatts_start_service...........................................................................................719esp_ble_gatts_stop_service...........................................................................................719esp_ble_resolve_adv_data.............................................................................................719esp_ble_tx_power_get....................................................................................................721esp_ble_tx_power_set....................................................................................................721esp_bluedroid_deinit.......................................................................................................722esp_bluedroid_disable....................................................................................................723esp_bluedroid_enable.....................................................................................................723esp_bluedroid_init...........................................................................................................723esp_bt_controller_deinit..................................................................................................723esp_bt_controller_disable...............................................................................................723esp_bt_controller_enable................................................................................................724esp_bt_controller_get_status..........................................................................................724esp_bt_controller_init......................................................................................................724esp_bt_controller_mem_release.....................................................................................724esp_bt_dev_get_address................................................................................................725esp_bt_dev_set_device_name.......................................................................................725esp_vhci_host_check_send_available............................................................................725Page 24esp_vhci_host_register_callback....................................................................................725esp_vhci_host_send_packet...........................................................................................726Upgrade APIs......................................................................................................................726system_upgrade_flag_check..........................................................................................726system_upgrade_flag_set...............................................................................................726system_upgrade_reboot.................................................................................................726system_upgrade_start....................................................................................................726system_upgrade_userbin_check....................................................................................727Smart config APIs................................................................................................................727smartconfig_start............................................................................................................727smartconfig_stop............................................................................................................727SNTP API............................................................................................................................727sntp_enabled..................................................................................................................727sntp_getoperatingmode..................................................................................................727sntp_getserver................................................................................................................728sntp_getservername.......................................................................................................728sntp_init..........................................................................................................................728sntp_servermode_dhcp..................................................................................................728sntp_setoperatingmode..................................................................................................729sntp_setserver................................................................................................................729sntp_setservername.......................................................................................................729sntp_stop........................................................................................................................730Generic TCP/UDP APIs.......................................................................................................730ipaddr_addr....................................................................................................................730IP4_ADDR......................................................................................................................730IP2STR...........................................................................................................................731MAC2STR......................................................................................................................731TCP Adapter APIs...............................................................................................................732tcpip_adapter_ap_input..................................................................................................732tcpip_adapter_ap_start...................................................................................................732tcpip_adapter_create_ip6_linklocal.................................................................................732tcpip_adapter_dhcpc_get_status....................................................................................732tcpip_adapter_dhcpc_option...........................................................................................733tcpip_adapter_dhcpc_start..............................................................................................733tcpip_adapter_dhcpc_stop..............................................................................................734tcpip_adapter_dhcps_get_status....................................................................................734tcpip_adapter_dhcps_option...........................................................................................734tcpip_adapter_dhcps_start..............................................................................................735tcpip_adapter_dhcps_stop..............................................................................................736tcpip_adapter_down.......................................................................................................736tcpip_adapter_eth_input.................................................................................................736tcpip_adapter_eth_start..................................................................................................736Page 25tcpip_adapter_free_sta_list.............................................................................................736tcpip_adapter_get_esp_if................................................................................................737tcpip_adapter_get_dns_info............................................................................................737tcpip_adapter_get_hostname.........................................................................................737tcpip_adapter_get_ip_info...............................................................................................737tcpip_adapter_get_ip6_linklocal......................................................................................738tcpip_adapter_get_netif..................................................................................................738tcpip_adapter_get_old_ip_info........................................................................................738tcpip_adapter_get_sta_list..............................................................................................738tcpip_adapter_get_wifi_if................................................................................................739tcpip_adapter_init...........................................................................................................739tcpip_adapter_set_dns_info............................................................................................740tcpip_adapter_set_hostname..........................................................................................740tcpip_adapter_set_ip_info...............................................................................................740tcpip_adapter_set_old_ip_info........................................................................................741tcpip_adapter_sta_input..................................................................................................741tcpip_adapter_sta_start..................................................................................................741tcpip_adapter_start.........................................................................................................741tcpip_adapter_stop.........................................................................................................742tcpip_adapter_up............................................................................................................742mdns...................................................................................................................................743mdns_free.......................................................................................................................743mdns_init........................................................................................................................743mdns_query....................................................................................................................743mdns_query_end............................................................................................................744mdns_result_free............................................................................................................744mdns_result_get.............................................................................................................744mdns_result_get_count...................................................................................................744mdns_service_add..........................................................................................................744mdns_service_instance_set............................................................................................745mdns_service_port_set...................................................................................................745mdns_service_remove....................................................................................................745mdns_service_remove_all..............................................................................................746mdns_service_txt_set.....................................................................................................746mdns_set_hostname......................................................................................................746mdns_set_instance.........................................................................................................746OTA.....................................................................................................................................747esp_ota_begin................................................................................................................747esp_ota_end...................................................................................................................747esp_ota_get_boot_partition............................................................................................748esp_ota_set_boot_partition.............................................................................................748esp_ota_write.................................................................................................................748GPIO Driver.........................................................................................................................749gpio_config.....................................................................................................................749Page 26gpio_get_level.................................................................................................................750gpio_install_isr_service...................................................................................................751gpio_intr_enable.............................................................................................................751gpio_intr_disable.............................................................................................................751gpio_isr_handler_add.....................................................................................................752gpio_isr_handler_remove...............................................................................................752gpio_isr_register.............................................................................................................753gpio_set_direction...........................................................................................................753gpio_set_intr_type..........................................................................................................754gpio_set_level.................................................................................................................755gpio_set_pull_mode........................................................................................................755gpio_uninstall_isr_service...............................................................................................756gpio_wakeup_enable......................................................................................................756gpio_wakeup_disable.....................................................................................................756GPIO Low Level..................................................................................................................756gpio_init..........................................................................................................................756gpio_input_get................................................................................................................757gpio_input_get_high.......................................................................................................757gpio_intr_ack..................................................................................................................757gpio_intr_ack_high..........................................................................................................757gpio_intr_handler_register..............................................................................................758gpio_intr_pending...........................................................................................................758gpio_intr_pending_high...................................................................................................758gpio_matrx_in.................................................................................................................758gpio_matrix_out..............................................................................................................759gpio_output_set..............................................................................................................759gpio_output_set_high.....................................................................................................760gpio_pad_hold................................................................................................................760gpio_pad_pulldown.........................................................................................................760gpio_pad_pullup.............................................................................................................760gpio_pad_select_gpio.....................................................................................................761gpio_pad_set_drv...........................................................................................................761gpio_pad_unhold............................................................................................................761gpio_pin_wakeup_disable...............................................................................................761gpio_pin_wakeup_enable...............................................................................................762GPIO RTC...........................................................................................................................762rtc_gpio_init....................................................................................................................762rtc_gpio_deinit................................................................................................................762rtc_gpio_get_level...........................................................................................................762rtc_gpio_set_level...........................................................................................................762rtc_gpio_set_direction.....................................................................................................762rtc_gpio_pullup_en.........................................................................................................762Page 27rtc_gpio_pulldown_en.....................................................................................................762rtc_gpio_pullup_dis.........................................................................................................762Analog to Digital Conversion...............................................................................................762adc1_config_channel_atten............................................................................................763adc1_config_width..........................................................................................................763adc1_get_voltage...........................................................................................................764hall_sensor_read............................................................................................................764UART driver API..................................................................................................................764uart_clear_intr_status.....................................................................................................764uart_disable_intr_mask...................................................................................................764uart_driver_delete...........................................................................................................765uart_driver_install...........................................................................................................765uart_disable_intr_mask...................................................................................................766uart_disable_pattern_det_intr.........................................................................................767uart_disable_rx_intr........................................................................................................767uart_disable_tx_intr........................................................................................................767uart_enable_intr_mask...................................................................................................767uart_enable_pattern_det_intr..........................................................................................768uart_enable_rx_intr.........................................................................................................768uart_enable_tx_intr.........................................................................................................768uart_flush........................................................................................................................769uart_get_baudrate..........................................................................................................769uart_get_buffered_data_len............................................................................................769uart_get_hw_flow_ctrl.....................................................................................................770uart_get_parity................................................................................................................770uart_get_stop_bits..........................................................................................................771uart_get_word_length.....................................................................................................771uart_intr_config...............................................................................................................771uart_isr_free....................................................................................................................773uart_isr_register..............................................................................................................773uart_param_config..........................................................................................................773uart_read_bytes..............................................................................................................774uart_set_baudrate...........................................................................................................774uart_set_dtr....................................................................................................................775uart_set_hw_flow_ctrl.....................................................................................................775uart_set_line_inverse......................................................................................................776uart_set_parity................................................................................................................776uart_set_pin....................................................................................................................776uart_set_rts.....................................................................................................................777uart_set_stop_bits..........................................................................................................777uart_set_word_length.....................................................................................................778uart_tx_chars..................................................................................................................778uart_wait_tx_done..........................................................................................................779uart_write_bytes.............................................................................................................779Page 28uart_write_bytes_with_break..........................................................................................780UART low level APIs............................................................................................................780uartAttach.......................................................................................................................780Uart_Init..........................................................................................................................780uart_div_modify..............................................................................................................781uart_buff_switch..............................................................................................................781uart_tx_switch.................................................................................................................781uart_baudrate_detect......................................................................................................781uart_rx_one_char............................................................................................................781uart_tx_wait_idle.............................................................................................................781uart_tx_flush...................................................................................................................781uart_tx_one_char............................................................................................................781uart_tx_one_char2..........................................................................................................781I2C APIs..............................................................................................................................781i2c_cmd_link_create.......................................................................................................782i2c_cmd_link_delete.......................................................................................................782i2c_driver_delete............................................................................................................782i2c_driver_install.............................................................................................................783i2c_get_data_mode........................................................................................................783i2c_get_data_timing........................................................................................................784i2s_get_period................................................................................................................784i2c_get_start_timing........................................................................................................784i2c_get_stop_timing........................................................................................................785i2c_isr_free.....................................................................................................................785i2c_isr_register...............................................................................................................785i2c_master_cmd_begin...................................................................................................786i2c_master_read.............................................................................................................786i2c_master_read_byte....................................................................................................787i2c_master_start.............................................................................................................787i2c_master_stop.............................................................................................................788i2c_master_write.............................................................................................................788i2c_master_write_byte....................................................................................................789i2c_param_config...........................................................................................................789i2c_reset_rx_fifo.............................................................................................................790i2c_reset_tx_fifo..............................................................................................................790i2c_set_data_mode........................................................................................................790i2c_set_data_timing........................................................................................................791i2c_set_period................................................................................................................791i2c_set_pin.....................................................................................................................792i2c_set_start_timing........................................................................................................792i2c_set_stop_timing........................................................................................................792i2c_slave_read_buffer.....................................................................................................793Page 29i2c_slave_write_buffer....................................................................................................793SPI APIs..............................................................................................................................793spi_bus_add_device.......................................................................................................793spi_bus_free...................................................................................................................795spi_bus_initialize.............................................................................................................795spi_bus_remove_device.................................................................................................796spi_device_get_trans_result...........................................................................................797spi_device_queue_trans.................................................................................................797spi_device_transmit........................................................................................................798I2S APIs..............................................................................................................................800i2s_driver_install.............................................................................................................800i2s_driver_uninstall.........................................................................................................800i2s_pop_sample..............................................................................................................800i2s_push_sample............................................................................................................800i2s_read_bytes...............................................................................................................800i2s_set_pin.....................................................................................................................800i2s_set_sample_rates.....................................................................................................800i2s_start..........................................................................................................................801i2s_stop..........................................................................................................................801i2s_write_bytes...............................................................................................................801i2s_zero_dma_buffer......................................................................................................801RMT APIs............................................................................................................................801rmt_clr_intr_enable_mask...............................................................................................801rmt_config.......................................................................................................................801rmt_driver_install............................................................................................................803rmt_driver_uninstall........................................................................................................803rmt_fill_tx_items..............................................................................................................803rmt_get_clk_div...............................................................................................................804rmt_get_mem_block_num..............................................................................................804rmt_get_mem_pd............................................................................................................804rmt_get_memory_owner.................................................................................................805rmt_get_ringbuf_handle..................................................................................................805rmt_get_rx_idle_thresh...................................................................................................805rmt_get_status................................................................................................................806rmt_get_source_clk........................................................................................................806rmt_get_tx_loop_mode...................................................................................................806rmt_isr_deregister...........................................................................................................807rmt_isr_register...............................................................................................................807rmt_memory_rw_rst........................................................................................................808rmt_rx_start....................................................................................................................808rmt_rx_stop.....................................................................................................................808rmt_set_clk_div...............................................................................................................808rmt_set_err_intr_en........................................................................................................809rmt_set_idle_level...........................................................................................................809Page 30rmt_set_intr_enable_mask..............................................................................................809rmt_set_mem_block_num...............................................................................................810rmt_set_mem_pd............................................................................................................810rmt_set_memory_owner.................................................................................................810rmt_set_pin.....................................................................................................................810rmt_set_rx_filter..............................................................................................................811rmt_set_rx_idle_thresh....................................................................................................811rmt_set_rx_intr_en..........................................................................................................812rmt_set_tx_carrier...........................................................................................................812rmt_set_tx_intr_en..........................................................................................................812rmt_set_tx_loop_mode...................................................................................................812rmt_set_tx_thr_intr_en....................................................................................................813rmt_set_source_clk.........................................................................................................813rmt_tx_start.....................................................................................................................813rmt_tx_stop.....................................................................................................................814rmt_wait_tx_done...........................................................................................................814rmt_write_items..............................................................................................................814LEDC/PWM APIs.................................................................................................................815ledc_bind_channel_timer................................................................................................815ledc_channel_config.......................................................................................................815ledc_fade_func_install....................................................................................................816ledc_fade_start...............................................................................................................816ledc_fade_func_uninstall................................................................................................816ledc_get_duty.................................................................................................................817ledc_get_freq..................................................................................................................817ledc_set_duty..................................................................................................................817ledc_isr_register.............................................................................................................818ledc_set_fade.................................................................................................................818ledc_set_fade_with_step................................................................................................819ledc_set_fade_with_time................................................................................................819ledc_set_freq..................................................................................................................820ledc_stop........................................................................................................................820ledc_timer_config............................................................................................................820ledc_timer_pause...........................................................................................................821ledc_timer_resume.........................................................................................................822ledc_timer_rst.................................................................................................................822ledc_timer_set................................................................................................................822ledc_update_duty...........................................................................................................823Pulse Counter......................................................................................................................823pcnt_counter_clear.........................................................................................................823pcnt_counter_pause.......................................................................................................823pcnt_counter_resume.....................................................................................................823Page 31pcnt_event_disable.........................................................................................................824pcnt_event_enable.........................................................................................................824pcnt_filter_enable...........................................................................................................824pcnt_filter_disable...........................................................................................................824pcnt_get_counter_value..................................................................................................824pcnt_get_event_value.....................................................................................................824pcnt_get_filter_value.......................................................................................................824pcnt_intr_enable.............................................................................................................824pcnt_intr_disable.............................................................................................................825pcnt_isr_register.............................................................................................................825pcnt_set_event_value.....................................................................................................825pcnt_set_filter_value.......................................................................................................825pcnt_set_mode...............................................................................................................825pcnt_set_pin...................................................................................................................825pcnt_uint_config..............................................................................................................825Logging...............................................................................................................................826esp_log_level_set...........................................................................................................826esp_log_set_vprintf.........................................................................................................826esp_log_write..................................................................................................................827Non Volatile Storage............................................................................................................827nvs_close........................................................................................................................828nvs_commit....................................................................................................................828nvs_erase_all..................................................................................................................828nvs_erase_key................................................................................................................829nvs_flash_init..................................................................................................................829nvs_flash_init_custom.....................................................................................................829nvs_get_blob..................................................................................................................829nvs_get_str.....................................................................................................................830nvs_get_i8......................................................................................................................830nvs_get_i16....................................................................................................................831nvs_get_i32....................................................................................................................831nvs_get_i64....................................................................................................................832nvs_get_u8.....................................................................................................................832nvs_get_u16...................................................................................................................832nvs_get_u32...................................................................................................................833nvs_get_u64...................................................................................................................833nvs_open........................................................................................................................833nvs_set_blob...................................................................................................................834nvs_set_str.....................................................................................................................834nvs_set_i8......................................................................................................................835nvs_set_i16....................................................................................................................835nvs_set_i32....................................................................................................................835nvs_set_i64....................................................................................................................836nvs_set_u8.....................................................................................................................836Page 32nvs_set_u16...................................................................................................................836nvs_set_u32...................................................................................................................837nvs_set_u64...................................................................................................................837Partition API........................................................................................................................837esp_partition_erase_range.............................................................................................837esp_partition_find...........................................................................................................838esp_partition_find_first....................................................................................................839esp_partition_get............................................................................................................840esp_partition_iterator_release........................................................................................841esp_partition_mmap.......................................................................................................841esp_partition_next..........................................................................................................842esp_partition_read..........................................................................................................842esp_partition_write..........................................................................................................842Virtual File System..............................................................................................................843esp_vfs_dev_uart_register..............................................................................................843esp_vfs_dev_uart_set_rx_line_endings..........................................................................843esp_vfs_dev_uart_set_tx_line_endings..........................................................................843esp_vfs_dev_uart_use_nonblocking...............................................................................844esp_vfs_dev_uart_use_driver.........................................................................................844esp_vfs_spiffs_register...................................................................................................844esp_vfs_spiffs_unregister...............................................................................................844esp_vfs_register.............................................................................................................845FatFs file system.................................................................................................................849esp_vfs_fat_register.......................................................................................................849esp_vfs_fat_sdmmc_mount............................................................................................849esp_vfs_fat_sdmmc_unmount........................................................................................851esp_vfs_fat_spiflash_mount...........................................................................................851esp_vfs_fat_spiflash_unmount.......................................................................................853esp_vfs_fat_unregister....................................................................................................853esp_vfs_fat_unregister_path...........................................................................................853f_mount...........................................................................................................................854ff_diskio_register.............................................................................................................854SPI Flash.............................................................................................................................854spi_flash_erase_range....................................................................................................855spi_flash_erase_sector...................................................................................................855spi_flash_get_chip_size..................................................................................................855spi_flash_get_counters...................................................................................................856spi_flash_init...................................................................................................................856spi_flash_mmap..............................................................................................................856spi_flash_mmap_dump...................................................................................................857spi_flash_munmap..........................................................................................................857spi_flash_read................................................................................................................857Page 33spi_flash_reset_counters................................................................................................858spi_flash_write................................................................................................................858SDMMC...............................................................................................................................858sdmmc_card_init.............................................................................................................858sdmmc_card_print_info...................................................................................................858sdmmc_host_deinit.........................................................................................................858sdmmc_host_do_transaction..........................................................................................859sdmmc_host_init.............................................................................................................859sdmmc_host_init_slot.....................................................................................................859sdmmc_host_set_bus_width...........................................................................................859sdmmc_host_set_card_clk.............................................................................................859sdmmc_read_sectors......................................................................................................860sdmmc_write_sectors.....................................................................................................860Cryptography.......................................................................................................................860esp_sha..........................................................................................................................860esp_sha_block................................................................................................................861esp_sha_lock_engine.....................................................................................................861esp_sha_lock_memory_block.........................................................................................861esp_sha_read_digest_state............................................................................................861esp_sha_try_lock_engine...............................................................................................861esp_sha_unlock_engine.................................................................................................861esp_sha_wait_idle..........................................................................................................861Hardware Timers.................................................................................................................861timer_disable_intr...........................................................................................................861timer_enable_intr............................................................................................................862timer_get_alarm_value...................................................................................................862timer_get_config.............................................................................................................863timer_get_counter_time_sec...........................................................................................863timer_get_counter_value................................................................................................864timer_group_intr_enable.................................................................................................864timer_group_intr_disable................................................................................................865timer_isr_register............................................................................................................865timer_init.........................................................................................................................865timer_pause....................................................................................................................866timer_set_counter_value.................................................................................................866timer_start.......................................................................................................................867timer_set_alarm..............................................................................................................867timer_set_alarm_value....................................................................................................868timer_set_auto_reload....................................................................................................868timer_set_counter_mode................................................................................................869timer_set_divider............................................................................................................869Pthreads..............................................................................................................................870esp_pthread_init.............................................................................................................870pthread_cancel...............................................................................................................870Page 34pthread_create................................................................................................................870pthread_cond_broadcast................................................................................................871pthread_cond_destroy....................................................................................................871pthread_cond_init...........................................................................................................871pthread_cond_signal......................................................................................................871pthread_cond_timedwait.................................................................................................871pthread_cond_wait.........................................................................................................872pthread_condattr_init......................................................................................................872pthread_detach...............................................................................................................872pthread_equal.................................................................................................................872pthread_getspecific.........................................................................................................872pthread_join....................................................................................................................873pthread_key_create........................................................................................................873pthread_key_delete........................................................................................................873pthread_once..................................................................................................................873pthread_mutex_destroy..................................................................................................874pthread_mutex_init.........................................................................................................874pthread_mutexattr_destroy.............................................................................................874pthread_mutexattr_gettype.............................................................................................875pthread_mutexattr_init....................................................................................................875pthread_mutexattr_settype.............................................................................................875pthread_mutex_lock.......................................................................................................876pthread_mutex_trylock....................................................................................................876pthread_mutex_unlock....................................................................................................876pthread_self....................................................................................................................876pthread_setspecific.........................................................................................................877sched_yield.....................................................................................................................877Watchdog processing..........................................................................................................877esp_int_wdt_init..............................................................................................................878esp_task_wdt_init...........................................................................................................878esp_task_wdt_feed.........................................................................................................878esp_task_wdt_delete......................................................................................................878Heap management..............................................................................................................879heap_trace_record_t.......................................................................................................879heap_caps_malloc..........................................................................................................879heap_caps_check_integrity............................................................................................879heap_caps_check_integrity_addr...................................................................................880heap_caps_check_integrity_all.......................................................................................880heap_caps_dump...........................................................................................................881heap_caps_dump_all......................................................................................................881heap_caps_free..............................................................................................................881heap_caps_realloc..........................................................................................................881Page 35heap_caps_get_free_size...............................................................................................882heap_caps_get_minimum_free_size..............................................................................882heap_caps_get_largest_free_block................................................................................882heap_caps_get_info.......................................................................................................883heap_caps_print_heap_info............................................................................................883heap_trace_dump...........................................................................................................883heap_trace_get...............................................................................................................884heap_trace_get_count....................................................................................................884heap_trace_init_standalone............................................................................................885heap_trace_resume........................................................................................................885heap_trace_start.............................................................................................................885heap_trace_stop.............................................................................................................886ULP Co-processor...............................................................................................................886RTC_SLOW_MEM..........................................................................................................886ulp_process_macros_and_load......................................................................................886ulp_load_binary..............................................................................................................887ulp_run............................................................................................................................887ulp_set_wakeup_period..................................................................................................888AWS-IoT..............................................................................................................................888aws_iot_is_autoreconnect_enabled................................................................................888aws_iot_mqtt_attempt_reconnect...................................................................................888aws_iot_mqtt_autoreconnect_set_status........................................................................888aws_iot_mqtt_connect....................................................................................................888aws_iot_mqtt_disconnect................................................................................................889aws_iot_mqtt_get_client_state........................................................................................889aws_iot_mqtt_get_network_disconnected_count............................................................890aws_iot_mqtt_get_next_packet_id..................................................................................890aws_iot_mqtt_init............................................................................................................890aws_iot_mqtt_is_client_connected.................................................................................891aws_iot_mqtt_publish.....................................................................................................891aws_iot_mqtt_reset_network_disconnected_count.........................................................892aws_iot_mqtt_resubscribe..............................................................................................892aws_iot_mqtt_set_connect_params................................................................................892aws_iot_mqtt_set_disconnect_handler...........................................................................893aws_iot_mqtt_subscribe.................................................................................................893aws_iot_mqtt_unsubscribe.............................................................................................894aws_iot_mqtt_yield.........................................................................................................894JSON processing................................................................................................................894HTTP/2 processing..............................................................................................................896Parsing XML – expat...........................................................................................................896Arduino – ESP32 HAL for UART.........................................................................................897uartAvailable...................................................................................................................897uartBegin........................................................................................................................897uartEnd...........................................................................................................................898Page 36uartFlush.........................................................................................................................898uartGetBaudRate............................................................................................................898uartGetDebug.................................................................................................................898uartPeek.........................................................................................................................899uartRead.........................................................................................................................899uartSetBaudRate............................................................................................................899uartSetDebug..................................................................................................................899uartWrite.........................................................................................................................900uartWriteBuf....................................................................................................................900Arduino – ESP32 HAL for I2C.............................................................................................900i2cAttachSCL..................................................................................................................900i2cAttachSDA..................................................................................................................900i2cDetachSCL.................................................................................................................901i2cDetachSDA................................................................................................................901i2cGetFrequency............................................................................................................901i2cInit..............................................................................................................................901i2cRead..........................................................................................................................901i2cSetFrequency.............................................................................................................902i2cWrite...........................................................................................................................902Arduino – ESP32 HAL for SPI.............................................................................................902spiAttachMISO................................................................................................................902spiAttachMOSI................................................................................................................902spiAttachSCK..................................................................................................................903spiAttachSS....................................................................................................................903spiClockDivToFrequency................................................................................................903spiDetachMISO...............................................................................................................903spiDetachMOSI...............................................................................................................903spiDetachSCK................................................................................................................903spiDetachSS...................................................................................................................903spiDisableSSPins...........................................................................................................904spiEnableSSPins............................................................................................................904spiFrequencyToClockDiv................................................................................................904spiGetBitOrder................................................................................................................904spiGetClockDiv...............................................................................................................904spiGetDataMode.............................................................................................................904spiRead..........................................................................................................................905spiReadByte...................................................................................................................905spiReadLong...................................................................................................................905spiReadWord..................................................................................................................905spiSetBitOrder................................................................................................................905spiSetClockDiv................................................................................................................905spiSetDataMode.............................................................................................................906Page 37spiSSClear......................................................................................................................906spiSSDisable..................................................................................................................906spiSSEnable...................................................................................................................906spiSSSet.........................................................................................................................906spiStartBus.....................................................................................................................906spiStopBus.....................................................................................................................907spiTransferBits................................................................................................................907spiTransferBytes.............................................................................................................908spiWaitReady..................................................................................................................908spiWrite...........................................................................................................................908spiWriteByte....................................................................................................................908spiWriteLong...................................................................................................................908spiWriteWord..................................................................................................................909Newlib.................................................................................................................................909abort...............................................................................................................................909abs..................................................................................................................................909asctime...........................................................................................................................910atoi..................................................................................................................................910atol..................................................................................................................................910bzero...............................................................................................................................911calloc...............................................................................................................................911check_pos.......................................................................................................................911close...............................................................................................................................911creat................................................................................................................................911ctime...............................................................................................................................912div...................................................................................................................................912environ............................................................................................................................912fclose..............................................................................................................................913fflush...............................................................................................................................913fmemopen.......................................................................................................................913fprintf...............................................................................................................................913fread...............................................................................................................................914free.................................................................................................................................914fscanf..............................................................................................................................914fseek...............................................................................................................................915fstat.................................................................................................................................915fwrite...............................................................................................................................915gettimeofday...................................................................................................................915gmtime............................................................................................................................916isalnum...........................................................................................................................916isalpha............................................................................................................................917isascii..............................................................................................................................917isblank............................................................................................................................917isdigit..............................................................................................................................917Page 38islower............................................................................................................................918isprint..............................................................................................................................918ispunct............................................................................................................................918isspace...........................................................................................................................918isupper............................................................................................................................918itoa..................................................................................................................................919labs.................................................................................................................................919ldiv..................................................................................................................................919localtime.........................................................................................................................919lseek...............................................................................................................................920malloc.............................................................................................................................920memchr...........................................................................................................................920memcmp.........................................................................................................................920memcpy..........................................................................................................................921memmove.......................................................................................................................921memrchr.........................................................................................................................921memset...........................................................................................................................922mkdir...............................................................................................................................922mktime............................................................................................................................922open................................................................................................................................922open_memstream...........................................................................................................923printf................................................................................................................................924qsort................................................................................................................................924rand................................................................................................................................924read................................................................................................................................925readdir............................................................................................................................925realloc.............................................................................................................................925scanf...............................................................................................................................925setenv.............................................................................................................................925setlocale.........................................................................................................................926settimeofday...................................................................................................................926sprintf..............................................................................................................................926srand...............................................................................................................................926sscanf.............................................................................................................................926stat..................................................................................................................................927strcasecmp.....................................................................................................................927strcasestr........................................................................................................................927strcat...............................................................................................................................927strchr...............................................................................................................................927strcmp.............................................................................................................................928strcoll..............................................................................................................................928strcpy..............................................................................................................................928Page 39strcspn............................................................................................................................928strdup..............................................................................................................................928strerror............................................................................................................................929strftime............................................................................................................................929strlcat..............................................................................................................................929strlcpy.............................................................................................................................929strlen...............................................................................................................................930strncasecmp...................................................................................................................930strncat.............................................................................................................................930strncmp...........................................................................................................................930strncpy............................................................................................................................930strndup............................................................................................................................930strnlen.............................................................................................................................931strrchr.............................................................................................................................931strsep..............................................................................................................................931strspn..............................................................................................................................931strstr................................................................................................................................931strtod...............................................................................................................................931strtof................................................................................................................................931strtol................................................................................................................................932strtoul..............................................................................................................................932strupr..............................................................................................................................932time.................................................................................................................................932times...............................................................................................................................932toascii.............................................................................................................................933tolower............................................................................................................................933toupper...........................................................................................................................933tzset................................................................................................................................933ungetc.............................................................................................................................934unlink..............................................................................................................................934utoa.................................................................................................................................934vprintf..............................................................................................................................934vscanf.............................................................................................................................934write................................................................................................................................935SPIFFs API..........................................................................................................................935esp_spiffs_format...........................................................................................................935esp_spiffs_info................................................................................................................935esp_spiffs_mounted........................................................................................................936SPIFFS_check................................................................................................................936SPIFFS_clearerr.............................................................................................................936SPIFFS_close.................................................................................................................936SPIFFS_closedir.............................................................................................................936SPIFFS_creat.................................................................................................................937SPIFFS_eof....................................................................................................................937Page 40SPIFFS_errno.................................................................................................................937SPIFFS_fflush.................................................................................................................939SPIFFS_format...............................................................................................................939SPIFFS_fremove............................................................................................................939SPIFFS_fstat..................................................................................................................939SPIFFS_gc.....................................................................................................................940SPIFFS_gc_quick...........................................................................................................940SPIFFS_info...................................................................................................................940SPIFFS_lseek.................................................................................................................941SPIFFS_mount...............................................................................................................941SPIFFS_mounted...........................................................................................................942SPIFFS_open.................................................................................................................942SPIFFS_open_by_dirent.................................................................................................943SPIFFS_open_by_page..................................................................................................943SPIFFS_opendir.............................................................................................................944SPIFFS_read..................................................................................................................944SPIFFS_readdir..............................................................................................................944SPIFFS_remove.............................................................................................................945SPIFFS_rename.............................................................................................................945SPIFFS_stat...................................................................................................................945SPIFFS_tell.....................................................................................................................946SPIFFS_unmount...........................................................................................................946SPIFFS_write..................................................................................................................946Eclipse Paho – MQTT Embedded C....................................................................................947MQTTClientInit................................................................................................................947MQTTConnect................................................................................................................947MQTTDisconnect............................................................................................................948MQTTPublish..................................................................................................................949MQTTRun.......................................................................................................................949MQTTSubscribe..............................................................................................................949MQTTUnsubscribe..........................................................................................................950MQTTYield......................................................................................................................950NetworkConnect.............................................................................................................950Arduino ESP32 Libraries.....................................................................................................950Arduino WiFi library........................................................................................................950WiFi.begin..................................................................................................................951WiFi.beingSmartConfig..............................................................................................952WiFi.beginWPSConfig................................................................................................952WiFi.BSSID................................................................................................................952WiFi.BSSIDstr............................................................................................................952WiFi.channel..............................................................................................................952WiFi.config.................................................................................................................953Page 41WiFi.disconnect..........................................................................................................953WiFi.dnsIP..................................................................................................................953WiFi.enableAP...........................................................................................................953WiFi.enableSTA.........................................................................................................953WiFi.encryptionType...................................................................................................953WiFi.gatewayIP..........................................................................................................954WiFi.getAutoConnect.................................................................................................954WiFi.getMode.............................................................................................................954WiFi.getNetworkInfo...................................................................................................954WiFi.hostByName......................................................................................................955WiFi.hostname...........................................................................................................955WiFi.isConnected.......................................................................................................955WiFi.isHidden.............................................................................................................955WiFi.localIP................................................................................................................955WiFi.macAddress.......................................................................................................956WiFi.mode..................................................................................................................956Wifi.persistent.............................................................................................................956WiFi.printDiag.............................................................................................................957WiFi.psk.....................................................................................................................957WiFi.RSSI...................................................................................................................957WiFi.scanComplete....................................................................................................957WiFi.scanDelete.........................................................................................................958WiFi.scanNetworks.....................................................................................................958WiFi.setAutoConnect..................................................................................................959WiFi.setAutoReconnect..............................................................................................959WiFi.smartConfigDone...............................................................................................959WiFi.softAP................................................................................................................959WiFi.softAPConfig......................................................................................................959WiFi.softAPdisconnect...............................................................................................959WiFi.softAPmacAddress.............................................................................................960WiFi.softAPIP.............................................................................................................960WiFi.SSID...................................................................................................................960WiFi.status.................................................................................................................960WiFi.stopSmartConfig................................................................................................961WiFi.subnetMask........................................................................................................961WiFi.waitForConnectResult........................................................................................961Arduino WiFiClient..........................................................................................................962WiFiClient...................................................................................................................962WiFiClient.available....................................................................................................962WiFiClient.connect.....................................................................................................962WiFiClient.connected.................................................................................................962WiFiClient.flush..........................................................................................................962WiFiClient.getNoDelay...............................................................................................962WiFiClient.peek..........................................................................................................963Page 42WiFiClient.read...........................................................................................................963WiFiClient.remoteIP...................................................................................................963WiFiClient.remotePort................................................................................................963WiFiClient.setLocalPortStart......................................................................................963WiFiClient.setNoDelay...............................................................................................963WiFiClient.setOption...................................................................................................963WiFiClient.status........................................................................................................964WiFiClient.stop...........................................................................................................964WiFiClient.stopAll.......................................................................................................964WiFiClient.write..........................................................................................................964Arduino WiFiServer.........................................................................................................964WiFiServer.................................................................................................................964WiFiServer.available...................................................................................................964WiFiServer.begin........................................................................................................965WiFiServer.getNoDelay..............................................................................................965WiFiServer.hasClient..................................................................................................965WiFiServer.setNoDelay..............................................................................................965WiFiServer.status.......................................................................................................965WiFiServer.write.........................................................................................................965Arduino IPAddress..........................................................................................................965Arduino SPI....................................................................................................................966SPI.begin...................................................................................................................966SPI.beginTransaction.................................................................................................966SPI.end......................................................................................................................966SPI.endTransaction....................................................................................................966SPI.setBitOrder..........................................................................................................966SPI.setClockDivider....................................................................................................966SPI.setDataMode.......................................................................................................967SPI.setFrequency.......................................................................................................967SPI.setHwC................................................................................................................967SPI.transfer................................................................................................................967SPI.transfer16............................................................................................................967SPI.transfer32............................................................................................................967SPI.transferBytes.......................................................................................................967SPI.transferBits..........................................................................................................967SPI.write.....................................................................................................................967SPI.wirite16................................................................................................................968SPI.write32.................................................................................................................968SPI.writeBytes............................................................................................................968SPI.writePattern.........................................................................................................968Arduino I2C – Wire.........................................................................................................968Wire.available.............................................................................................................969Page 43Wire.begin..................................................................................................................969Wire.beginTransmission.............................................................................................969Wire.endTransmission................................................................................................970Wire.flush...................................................................................................................970Wire.onReceive..........................................................................................................970Wire.onReceiveService..............................................................................................970Wire.onRequest.........................................................................................................970Wire.onRequestService..............................................................................................971Wire.peek...................................................................................................................971Wire.pins....................................................................................................................971Wire.read...................................................................................................................971Wire.requestFrom......................................................................................................972Wire.setClock.............................................................................................................972Wire.write...................................................................................................................972Arduino Ticker library......................................................................................................972Ticker.........................................................................................................................973attach.........................................................................................................................973attach_ms..................................................................................................................973detach........................................................................................................................974once...........................................................................................................................974once_ms....................................................................................................................974Arduino EEPROM library................................................................................................974EEPROM.begin..........................................................................................................974EEPROM.commit.......................................................................................................975EEPROM.end.............................................................................................................975EEPROM.get..............................................................................................................975EEPROM.getDataPtr..................................................................................................975EEPROM.put..............................................................................................................975EEPROM.read...........................................................................................................975EEPROM.write...........................................................................................................975Arduino SPIFFS..............................................................................................................976SPIFFS.begin.............................................................................................................976SPIFFS.open..............................................................................................................976SPIFFS.openDir.........................................................................................................976SPIFFS.remove..........................................................................................................976SPIFFS.rename.........................................................................................................977File.available..............................................................................................................977File.close....................................................................................................................977File.flush.....................................................................................................................977File.name...................................................................................................................977File.peek....................................................................................................................977File.position................................................................................................................977File.read.....................................................................................................................978File.seek.....................................................................................................................978Page 44File.size......................................................................................................................978File.write.....................................................................................................................978Dir.fileName................................................................................................................978Dir.next.......................................................................................................................979Dir.open......................................................................................................................979Dir.openDir.................................................................................................................979Dir.remove..................................................................................................................979Dir.rename..................................................................................................................979Arduino ESP library.........................................................................................................979ESP.eraseConfig........................................................................................................979ESP.getChipId............................................................................................................979ESP.getCpuFreqMHz.................................................................................................979ESP.getCycleCount....................................................................................................979ESP.getFlashChipMode.............................................................................................979ESP.getFlashChipSize...............................................................................................980ESP.getFlashChipSpeed............................................................................................980ESP.getFreeHeap.......................................................................................................980ESP.getOption............................................................................................................980ESP.getSdkVersion....................................................................................................980ESP.flashEraseSector................................................................................................980ESP.flashRead...........................................................................................................980ESP.flashWrite............................................................................................................980ESP.magicFlashChipSize...........................................................................................980ESP.magicFlashChipSpeed........................................................................................980ESP.restart.................................................................................................................980Arduino String library......................................................................................................981Constructor.................................................................................................................981String.c_str.................................................................................................................981String.reserve.............................................................................................................981String.length...............................................................................................................981String.concat..............................................................................................................981String.equalsIgnoreCase............................................................................................982String.startsWith.........................................................................................................982String.endsWith..........................................................................................................982String.charAt..............................................................................................................982String.setCharAt.........................................................................................................982String.getBytes...........................................................................................................982String toCharArray.....................................................................................................982String.indexOf............................................................................................................982String.lastIndexOf.......................................................................................................982String.substring..........................................................................................................982String.replace.............................................................................................................983Page 45String.remove.............................................................................................................983String.toLowerCase....................................................................................................983String.toUpperCase....................................................................................................983String.trim...................................................................................................................983String.toInt..................................................................................................................983String.toFloat..............................................................................................................983Reference materials.................................................................................................................983Internal structure of compiled code......................................................................................983Using size.......................................................................................................................985Using objdump................................................................................................................986Using objcopy.................................................................................................................986Using nm........................................................................................................................986Linking............................................................................................................................987Linker scripts..............................................................................................................988Weak linkage..............................................................................................................990Memory Map..............................................................................................................990The Bootloader....................................................................................................................996Runtime memory.................................................................................................................998Cache memory processing...........................................................................................1000MMU processing...........................................................................................................1000C Programming.............................................................................................................1003Eclipse configuration.....................................................................................................1003Simple class definition..................................................................................................1004Mixing C and C .........................................................................................................1005Including stdc in your app.........................................................................................1006C Specialized Data types..........................................................................................1006String........................................................................................................................1006List...........................................................................................................................1007Map..........................................................................................................................1007Queue......................................................................................................................1008Stack........................................................................................................................1008Vector.......................................................................................................................1008Lambda functions.........................................................................................................1009Designated initializers not available in C ...................................................................1009Ignoring warnings.........................................................................................................1009File I/O in C ...............................................................................................................1009The Factory pattern......................................................................................................1010Logging pre-defined symbols........................................................................................1011The ESP-IDF C class libraries.......................................................................................1011GPIO interactions..........................................................................................................1011WiFi..............................................................................................................................1012Task management........................................................................................................1014Socket programming.....................................................................................................1014Socket Server...............................................................................................................1014Page 46HttpServer....................................................................................................................1014WebSocket...............................................................................................................1017WebSocket File Transfer..........................................................................................1018Performance.............................................................................................................1019I2C Interaction..............................................................................................................1020SPI Interaction..............................................................................................................1020Pulse Width Modulation – PWM....................................................................................1021Bluetooth BLE...............................................................................................................1021A BLE Server............................................................................................................1023A BLE Client.............................................................................................................1029Non Volatile Storage.....................................................................................................1034FAT FS..........................................................................................................................1034Working with JSON.......................................................................................................1034POSIX file system APIs.....................................................................................................1035Documenting your code – Doxygen...................................................................................1036Creating a build environment on the Raspberry Pi 3.........................................................1037Windows Subsystem for Linux – WSL...............................................................................1039Makefiles...........................................................................................................................1041The component.mk settings..........................................................................................1043The ESPTOOL protocol.....................................................................................................10450x02 – FLASH_BEGIN.................................................................................................10470x03 – FLASH_DATA...................................................................................................10480x05 – MEM_BEGIN.....................................................................................................10480x06 – MEM_END command........................................................................................10490x07 – MEM_DATA command......................................................................................10490x08 – SYNC command...............................................................................................10490x09 – WRITE_REG.....................................................................................................10490x0A – READ_REG......................................................................................................1050The flasher_stub...........................................................................................................1050Using Node-JS for an esptool.......................................................................................1051Forums..............................................................................................................................1052Reference documents.......................................................................................................1052Github................................................................................................................................1052Github quick cheats......................................................................................................1052Installing Ubuntu on VirtualBox..............................................................................................1053Single board computer comparisons......................................................................................1059Areas to Research.................................................................................................................1060 |
标签： Programming编程 ESp32 wi-fi 2018年
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