STM32+W5500 Modbus-TCP协议功能实现

【实例简介】
经过这几天的学习与调试，终于在STM32F103VCT6+W5500(SPI1)+Freemodbus 平台上，实现Modbus-TCP协议的功能。其实很简单，只要熟悉Modbus-RTU通讯，明白Modbus帧的结构等，Modbus-TCP只是在原来的帧结构上加个头，去个尾，然后用TCP传输即可。 关键的内容就是怎样获取W5500新接收的数据包，并发送给Modbus事件状态机驱动协议的执行，数据的处理。 主要参考Freemodbus demo里的Modbus-TCP协议实现的思路，获取缓存区的读写与发送响应。
【实例截图】
【核心代码】
STM32_W5500_Modbus_TCP_V1
|-- CMSIS
| |-- core_cm3.c
| |-- core_cm3.h
| |-- startup
| | |-- startup_stm32f10x_cl.s
| | |-- startup_stm32f10x_hd.s
| | |-- startup_stm32f10x_hd_vl.s
| | |-- startup_stm32f10x_ld.s
| | |-- startup_stm32f10x_ld_vl.s
| | |-- startup_stm32f10x_md.s
| | |-- startup_stm32f10x_md_vl.s
| | `-- startup_stm32f10x_xl.s
| |-- stm32f10x.h
| |-- system_stm32f10x.c
| `-- system_stm32f10x.h
|-- FWlib
| |-- inc
| | |-- misc.h
| | |-- stm32f10x_adc.h
| | |-- stm32f10x_bkp.h
| | |-- stm32f10x_can.h
| | |-- stm32f10x_cec.h
| | |-- stm32f10x_crc.h
| | |-- stm32f10x_dac.h
| | |-- stm32f10x_dbgmcu.h
| | |-- stm32f10x_dma.h
| | |-- stm32f10x_exti.h
| | |-- stm32f10x_flash.h
| | |-- stm32f10x_fsmc.h
| | |-- stm32f10x_gpio.h
| | |-- stm32f10x_i2c.h
| | |-- stm32f10x_iwdg.h
| | |-- stm32f10x_pwr.h
| | |-- stm32f10x_rcc.h
| | |-- stm32f10x_rtc.h
| | |-- stm32f10x_sdio.h
| | |-- stm32f10x_spi.h
| | |-- stm32f10x_tim.h
| | |-- stm32f10x_usart.h
| | `-- stm32f10x_wwdg.h
| `-- src
| |-- misc.c
| |-- stm32f10x_adc.c
| |-- stm32f10x_bkp.c
| |-- stm32f10x_can.c
| |-- stm32f10x_cec.c
| |-- stm32f10x_crc.c
| |-- stm32f10x_dac.c
| |-- stm32f10x_dbgmcu.c
| |-- stm32f10x_dma.c
| |-- stm32f10x_exti.c
| |-- stm32f10x_flash.c
| |-- stm32f10x_fsmc.c
| |-- stm32f10x_gpio.c
| |-- stm32f10x_i2c.c
| |-- stm32f10x_iwdg.c
| |-- stm32f10x_pwr.c
| |-- stm32f10x_rcc.c
| |-- stm32f10x_rtc.c
| |-- stm32f10x_sdio.c
| |-- stm32f10x_spi.c
| |-- stm32f10x_tim.c
| |-- stm32f10x_usart.c
| `-- stm32f10x_wwdg.c
|-- Listing
| |-- STM32_Modbus_TCP_V1.map
| `-- startup_stm32f10x_hd.lst
|-- USER
| |-- JLink Regs CM3.txt
| |-- JLinkLog.txt
| |-- JLinkSettings.ini
| |-- STM32-DEMO.uvopt
| |-- STM32-DEMO.uvproj
| |-- STM32-DEMO_STM32_Modbus_TCP V1.0.dep
| |-- STM32-DEMO_uvopt.bak
| |-- inc
| | |-- SysTick.h
| | |-- W5500.h
| | |-- device.h
| | |-- led.h
| | |-- stm32f10x_conf.h
| | |-- stm32f10x_it.h
| | `-- usart1.h
| `-- src
| |-- SysTick.c
| |-- System_Init.c
| |-- W5500.c
| |-- led.c
| |-- main.c
| |-- stm32f10x_it.c
| `-- usart1.c
`-- modbus
|-- ascii
| |-- mbascii.c
| `-- mbascii.h
|-- functions
| |-- mbfunccoils.c
| |-- mbfuncdiag.c
| |-- mbfuncdisc.c
| |-- mbfuncholding.c
| |-- mbfuncinput.c
| |-- mbfuncother.c
| `-- mbutils.c
|-- include
| |-- mb.h
| |-- mbconfig.h
| |-- mbframe.h
| |-- mbfunc.h
| |-- mbport.h
| |-- mbproto.h
| `-- mbutils.h
|-- mb.c
|-- port
| |-- port.h
| |-- portevent.c
| `-- porttcp.c
|-- rtu
| |-- mbcrc.c
| |-- mbcrc.h
| |-- mbrtu.c
| `-- mbrtu.h
`-- tcp
|-- mbtcp.c
`-- mbtcp.h

16 directories, 108 files