实例介绍
【实例简介】
【实例截图】
【实例截图】
【核心代码】
#include <stc15f2k60s2.h>
#include "12864.h"
#include "delay.h"
#include <stdio.h>
#define adc_start 0x08
#define adc_flag 0x10
#define T0_time (65536-60000/f_val) //24MHz晶振,T0定时时间，1T模式
#define uint unsigned int
#define uchar unsigned char
sbit g2r=P5^5; //继电器
sbit bx=P3^3; //波形切换按键
sbit Vpp_z=P3^4; //峰峰值
sbit Vpp_j=P3^5; //峰峰值-
sbit f_z=P3^6; //频率
sbit f_j=P3^7; //频率-
sbit wr=P4^5; //DAC0832开关
uchar lcd_xs[10]; //lcd装载使用
float fz; //波形峰峰值
uint i; //T0中断反馈
int f_val=50; //频率键值 默认50Hz
uchar keyval; //键值
uchar code forsin[403]={ //正弦波数组
0x7F,0x81,0x83,0x85,0x87,0x89,0x8B,0x8D,0x8F,0x91,
0x93,0x95,0x97,0x99,0x9B,0x9D,0x9F,0xA1,0xA2,0xA4,
0xA6,0xA8,0xAA,0xAC,0xAE,0xB0,0xB1,0xB3,0xB5,0xB7,
0xB9,0xBA,0xBC,0xBE,0xC0,0xC1,0xC3,0xC5,0xC6,0xC8,
0xCA,0xCB,0xCD,0xCE,0xD0,0xD1,0xD3,0xD4,0xD6,0xD7,
0xD9,0xDA,0xDC,0xDD,0xDE,0xE0,0xE1,0xE2,0xE3,0xE5,
0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,
0xF0,0xF1,0xF2,0xF3,0xF4,0xF4,0xF5,0xF6,0xF6,0xF7,
0xF8,0xF8,0xF9,0xF9,0xFA,0xFA,0xFB,0xFB,0xFC,0xFC,
0xFC,0xFD,0xFD,0xFD,0xFD,0xFE,0xFE,0xFE,0xFE,0xFE,
0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFD,0xFD,0xFD,0xFD,
0xFC,0xFC,0xFC,0xFB,0xFB,0xFA,0xFA,0xF9,0xF9,0xF8,
0xF8,0xF7,0xF6,0xF6,0xF5,0xF4,0xF4,0xF3,0xF2,0xF1,
0xF0,0xEF,0xEE,0xED,0xEC,0xEB,0xEA,0xE9,0xE8,0xE7,
0xE6,0xE5,0xE3,0xE2,0xE1,0xE0,0xDE,0xDD,0xDC,0xDA,
0xD9,0xD7,0xD6,0xD4,0xD3,0xD1,0xD0,0xCE,0xCD,0xCB,
0xCA,0xC8,0xC6,0xC5,0xC3,0xC1,0xC0,0xBE,0xBC,0xBA,
0xB9,0xB7,0xB5,0xB3,0xB1,0xB0,0xAE,0xAC,0xAA,0xA8,
0xA6,0xA4,0xA2,0xA1,0x9F,0x9D,0x9B,0x99,0x97,0x95,
0x93,0x91,0x8F,0x8D,0x8B,0x89,0x87,0x85,0x83,0x81,
0x7F,0x7D,0x7B,0x79,0x77,0x75,0x73,0x71,0x6F,0x6D,
0x6B,0x69,0x67,0x65,0x63,0x61,0x5F,0x5D,0x5C,0x5A,
0x58,0x56,0x54,0x52,0x50,0x4E,0x4D,0x4B,0x49,0x47,
0x45,0x44,0x42,0x40,0x3E,0x3D,0x3B,0x39,0x38,0x36,
0x34,0x33,0x31,0x30,0x2E,0x2D,0x2B,0x2A,0x28,0x27,
0x25,0x24,0x22,0x21,0x20,0x1E,0x1D,0x1C,0x1B,0x19,
0x18,0x17,0x16,0x15,0x14,0x13,0x12,0x11,0x10,0x0F,
0x0E,0x0D,0x0C,0x0B,0x0A,0x0A,0x09,0x08,0x08,0x07,
0x06,0x06,0x05,0x05,0x04,0x04,0x03,0x03,0x02,0x02,
0x02,0x01,0x01,0x01,0x01,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x01,
0x02,0x02,0x02,0x03,0x03,0x04,0x04,0x05,0x05,0x06,
0x06,0x07,0x08,0x08,0x09,0x0A,0x0A,0x0B,0x0C,0x0D,
0x0E,0x0F,0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,
0x18,0x19,0x1B,0x1C,0x1D,0x1E,0x20,0x21,0x22,0x24,
0x25,0x27,0x28,0x2A,0x2B,0x2D,0x2E,0x30,0x31,0x33,
0x34,0x36,0x38,0x39,0x3B,0x3D,0x3E,0x40,0x42,0x44,
0x45,0x47,0x49,0x4B,0x4D,0x4E,0x50,0x52,0x54,0x56,
0x58,0x5A,0x5C,0x5D,0x5F,0x61,0x63,0x65,0x67,0x69,
0x6B,0x6D,0x6F,0x71,0x73,0x75,0x77,0x79,0x7B,0x7D,0x7F,0x7F,0x7F};
uchar code forsj[403]={ //三角波数组
0x00,0x01,0x03,0x04,0x05,0x06,0x08,0x09,0x0A,0x0B,
0x0D,0x0E,0x0F,0x11,0x12,0x13,0x14,0x16,0x17,0x18,
0x1A,0x1B,0x1C,0x1D,0x1F,0x20,0x21,0x22,0x24,0x25,
0x26,0x28,0x29,0x2A,0x2B,0x2D,0x2E,0x2F,0x30,0x32,
0x33,0x34,0x36,0x37,0x38,0x39,0x3B,0x3C,0x3D,0x3E,
0x40,0x41,0x42,0x44,0x45,0x46,0x47,0x49,0x4A,0x4B,
0x4D,0x4E,0x4F,0x50,0x52,0x53,0x54,0x55,0x57,0x58,
0x59,0x5B,0x5C,0x5D,0x5E,0x60,0x61,0x62,0x63,0x65,
0x66,0x67,0x69,0x6A,0x6B,0x6C,0x6E,0x6F,0x70,0x71,
0x73,0x74,0x75,0x77,0x78,0x79,0x7A,0x7C,0x7D,0x7E,
0x80,0x81,0x82,0x83,0x85,0x86,0x87,0x88,0x8A,0x8B,
0x8C,0x8E,0x8F,0x90,0x91,0x93,0x94,0x95,0x96,0x98,
0x99,0x9A,0x9C,0x9D,0x9E,0x9F,0xA1,0xA2,0xA3,0xA4,
0xA6,0xA7,0xA8,0xAA,0xAB,0xAC,0xAD,0xAF,0xB0,0xB1,
0xB3,0xB4,0xB5,0xB6,0xB8,0xB9,0xBA,0xBB,0xBD,0xBE,
0xBF,0xC1,0xC2,0xC3,0xC4,0xC6,0xC7,0xC8,0xC9,0xCB,
0xCC,0xCD,0xCF,0xD0,0xD1,0xD2,0xD4,0xD5,0xD6,0xD7,
0xD9,0xDA,0xDB,0xDD,0xDE,0xDF,0xE0,0xE2,0xE3,0xE4,
0xE6,0xE7,0xE8,0xE9,0xEB,0xEC,0xED,0xEE,0xF0,0xF1,
0xF2,0xF4,0xF5,0xF6,0xF7,0xF9,0xFA,0xFB,0xFC,0xFE,
0xFF,0xFE,0xFC,0xFB,0xFA,0xF9,0xF7,0xF6,0xF5,0xF4,
0xF2,0xF1,0xF0,0xEE,0xED,0xEC,0xEB,0xE9,0xE8,0xE7,
0xE6,0xE4,0xE3,0xE2,0xE0,0xDF,0xDE,0xDD,0xDB,0xDA,
0xD9,0xD7,0xD6,0xD5,0xD4,0xD2,0xD1,0xD0,0xCF,0xCD,
0xCC,0xCB,0xC9,0xC8,0xC7,0xC6,0xC4,0xC3,0xC2,0xC1,
0xBF,0xBE,0xBD,0xBB,0xBA,0xB9,0xB8,0xB6,0xB5,0xB4,
0xB3,0xB1,0xB0,0xAF,0xAD,0xAC,0xAB,0xAA,0xA8,0xA7,
0xA6,0xA4,0xA3,0xA2,0xA1,0x9F,0x9E,0x9D,0x9C,0x9A,
0x99,0x98,0x96,0x95,0x94,0x93,0x91,0x90,0x8F,0x8E,
0x8C,0x8B,0x8A,0x88,0x87,0x86,0x85,0x83,0x82,0x81,
0x80,0x7E,0x7D,0x7C,0x7A,0x79,0x78,0x77,0x75,0x74,
0x73,0x71,0x70,0x6F,0x6E,0x6C,0x6B,0x6A,0x69,0x67,
0x66,0x65,0x63,0x62,0x61,0x60,0x5E,0x5D,0x5C,0x5B,
0x59,0x58,0x57,0x55,0x54,0x53,0x52,0x50,0x4F,0x4E,
0x4D,0x4B,0x4A,0x49,0x47,0x46,0x45,0x44,0x42,0x41,
0x40,0x3E,0x3D,0x3C,0x3B,0x39,0x38,0x37,0x36,0x34,
0x33,0x32,0x30,0x2F,0x2E,0x2D,0x2B,0x2A,0x29,0x28,
0x26,0x25,0x24,0x22,0x21,0x20,0x1F,0x1D,0x1C,0x1B,
0x1A,0x18,0x17,0x16,0x14,0x13,0x12,0x11,0x0F,0x0E,
0x0D,0x0B,0x0A,0x09,0x08,0x06,0x05,0x04,0x03,0x01,0x00,0x00,0x00};
void chushihua() //初始化函数
{
i=0;
wr=0;
bx=1;
P2=0x7f;
g2r=1;
keyval=0x00;
EA=1; //总中断允许
EX0=1; //允许外部中断0
IT0=1; //选择外部中断0方式为沿触发
PX0=1;
EX1=1; //允许外部中断1
IT1=1; //选择外部中断1方式为沿触发
PX1=1;
INT_CLKO|=0x10; //EX2=1 允许外部中断2
AUXR|=0x80; //定时器0为1T模式
TMOD=0x00; //定时器T0、T1设置为方式0，16位自装载定时器
ET0=1; //允许定时器T0中断
// TR0=1; //启动定时器T0
}
void F() //修改频率函数
{
TR0=0;
TH0=T0_time>>8;
TL0=T0_time;
TR0=1;
}
void delay_10ms() //延时10ms，去抖
{
int i,j;
for(i=0;i<120;i )
for(j=0;j<120;j )
;
}
void sin() //正弦波函数
{
if(i>=400)
{
i=0;
}
P2=forsin[i];
}
void sanjiao() //三角波函数
{
if(i>=400)
{
i=0;
}
P2=forsj[i];
}
void fang() //方波函数
{
if(i>=400)
{
i=0;
}
if(i<=200)
P2=0xff;
else
P2=0x00;
}
void initadc() //ADC初始化
{
P1ASF=0x01;
ADC_RES=0;
ADC_CONTR=0x80|adc_start;
}
void lcd() //显示
{
LCD_PutString(0,1,"波形：");
switch(keyval)
{
case 0:LCD_PutString(3,1,"无 ");break;
case 1:LCD_PutString(3,1,"sin ");break;
case 2:LCD_PutString(3,1,"叁角波");break;
case 3:LCD_PutString(3,1,"方波 ");break;
}
LCD_PutString(0,2,"峰峰值：");
sprintf(lcd_xs,"%3.2f ",fz);
Write_Cmd(0x94);
delay_us(50);
Write_Data(lcd_xs[0]);
delay_us(50);
Write_Data(lcd_xs[1]);
delay_us(50);
Write_Data(lcd_xs[2]);
delay_us(50);
Write_Data(lcd_xs[3]);
delay_us(50);
Write_Data(lcd_xs[4]);
delay_us(50);
Write_Data(lcd_xs[5]);
delay_us(50);
Write_Data(lcd_xs[6]);
delay_us(50);
LCD_PutString(0,3,"频率：");
sprintf(lcd_xs,"%d ",f_val);
Write_Cmd(0x8b);
delay_us(50);
Write_Data(lcd_xs[0]);
delay_us(50);
Write_Data(lcd_xs[1]);
delay_us(50);
Write_Data(lcd_xs[2]);
delay_us(50);
Write_Data(lcd_xs[3]);
delay_us(50);
Write_Data(lcd_xs[4]);
delay_us(50);
Write_Data(lcd_xs[5]);
delay_us(50);
Write_Data(lcd_xs[6]);
delay_us(50);
}
void main() //主循环
{
Init_ST7920();
chushihua();
initadc();
F();
while(1)
{
lcd();
if(adc_flag)
{
ADC_CONTR=0x80;
fz=ADC_RES*0.039216;
ADC_CONTR=0x80|adc_start;
}
}
}
void int_T0() interrupt 1 using 1 //TO中断，定频
{
i ;
switch(keyval)
{
case 1:sin();break;
case 2:sanjiao();break;
case 3:fang();break;
}
}
void int0() interrupt 0 using 2 //按键中断0，频率-
{
EX0=0;
f_val--;
if(f_val<1)
f_val=100;
TR0=0;
TH0=T0_time/256;
TL0=T0_time%256;
TR0=1;
EX0=1;
}
void int1() interrupt 2 using 3 //按键中断1，频率
{
EX1=0;
f_val ;
if(f_val>100)
f_val=1;
TR0=0;
TH0=T0_time/256;
TL0=T0_time%256;
TR0=1;
EX1=1;
}
void int2() interrupt 10 //切换波形 无→正弦波→三角波→方波
{
delay_ms(50);
i=0;
P2=0x7f;
keyval ;
if(keyval>3)
keyval=0;
if(keyval==1)
g2r=1;
else
g2r=1;
}
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