ev1527、pt2262等433/315MHZ芯片用stc15w204s-sop8单片机解码，含源程序

• 硬件介绍：
• 软件介绍：
• 单片机引脚定义：
• 解码原理：
• 最终结果：
• • 主要代码 pt2262.c
  • 头文件 cofig.h
  • time0中断 interrupt.c
  • time0中断头文件 interrupt.h
  • 子程序 subPG.c
  • 子程序头文件 subPG.h

硬件介绍：

硬件，某宝上大把：
1、433发射遥控1个，3元；
2、433超外差接收模块1个，0.6元；
3、stc最小系统板一个，笔者用的是STC-15W204S-SOP8最小版1.6元；
4、TTL编程线下载1根，6元；
我都是在某宝上买的，总价值不到12元

---

软件介绍：

自行下载：
1、 keilC51
2、 stc-isp-15xx-v6.87E烧写程序
3、 串口调试工具
4、 STC-USB驱动

---

单片机引脚定义：

引脚定义，均可以改变，自定义
1、P3.0 RXD引脚，软件模拟串口接收，接上位机TXD
2、P3.1 TXD引脚，软件模拟串口发送，接上位机RXD
3、P3.2 接433模块DO输出引脚
4、P3.3 LED指示灯
5、P5.4 5.5空闲

---

解码原理：

略，度娘。简单来说就是检测433遥控发送的高低电平宽度，0.8-1毫秒为bit ‘1’,0.25-0.35毫秒为bit ‘0’

---

最终结果：

结果：
烧录成功后，打开串口，波特率设置为38400，按433遥控按键，会通过串口调试工具接收到3字节的解码输出。

---

主要代码 pt2262.c

#include <STC15F104E.H> #include "public/inc/config.h" #include "public/inc/interrupt.h" #include "public/inc/subPG.h"//unsigned char bufSend[16] = {97,98,99,65,66,'f','g','h','i','j','k','l','m','n','o','p'}; unsigned int buftime[40]; unsigned char inc; bit dataB; bit T2Action; bit RECEIVE; //????void main() {uchar data1,data2,data3,counttime,i=0;int time;int timeL;//低电平持续时间int timeH; //高电平持续时间UART_INIT(); //系统初始化YS100ms(50);LED=0;while(1){do {LED=0;}while(P3_2==1);if((P3_2==0) && (T2Action==0)) //等待低电平，低电平开始记时{AUXR &= 0XEF;T2H=0x00;T2L=0x00;//TF0=0;AUXR |= 0X10;T2Action=1;while(1){if((P3_2==1) && (T2Action==1)){AUXR &= 0XEF;time=T2H*256+T2L; //记下低电平宽度时间T2Action=0;T2H=0x00;T2L=0x00;//TF0=0;AUXR |= 0X10;if((time>10000) && (time<10250)) //检测同步码约10ms{counttime=0;time=0;do {} while(P3_2==1);if((P3_2==0) && (T2Action==0)) //等待第一个低电平，一有低电平马上记时{AUXR &= 0XEF;time=T2H*256+T2L; //记下第一个高电平宽度时间,防止误触发if((time>300) && (time<450)) //检测同步码高电平约350us{RECEIVE=1; //检测到同步码时 置标志位 RECEIVE=1inc = 0;data1=0;data2=0;data3=0;}}}break;}}} /如果RECEIVE==1则同步码接收完毕，进入数据解码程序///if(RECEIVE==1) //检测到同步码后开始解码{LED=1; //绿发光二极管灯亮（调试用）RECEIVE=0;while(1){do {} while(P3_2==1);if((P3_2==0) && (T2Action==0)) //等待第一个低电平，一有低电平马上记时{AUXR &= 0XEF;timeH=T2H*256+T2L; //记高电平宽度时间T2Action=1;T2H=0x00;T2L=0x00;//TF0=0;AUXR |= 0X10;while(1){if((P3_2==1) && (T2Action==1)){AUXR &= 0XEF;timeL=T2H*256+T2L; //记低电平宽度时间//buftime[inc] = timeL;T2Action=0;T2H=0x00;T2L=0x00;//TF0=0;AUXR |= 0X10; //开始记高电平时间break;}}}if(inc++ <= 23) //24bit数据单元{ if((timeL>1200) || (timeL<100)) //干扰码{break; }dataB = 0;if((timeL>800) && (timeL < 1000))dataB = 1;if(inc < 8){data1 <<= 1;data1 |= dataB; }else if((inc >= 8) && (inc < 16)){data2 <<= 1;data2 |= dataB;}else if((inc >= 16) && (inc < 24)){data3 <<= 1;data3 |= dataB; }/* for(i=0;i<inc;i++){send_num2uart(66066);send_num2uart(buftime[i]);}*/}else{inc = 0;send_num2uart(data1);send_num2uart(data2);send_num2uart(data3);break; //24位接收完毕，退出解码程序}}}} }

头文件 cofig.h

#ifndef _CONFIG_H #define _CONFIG_H#include <STC15F104E.H> #define uchar unsigned char #define NUM_LEN 5 //数据转为字符串，字符串最长为6 //设置通信波特率 //#define BAUD 0xF400 // 1200bps @ 11.0592MHz //#define BAUD 0xFA00 // 2400bps @ 11.0592MHz //#define BAUD 0xFD00 // 4800bps @ 11.0592MHz //#define BAUD 0xFE80 // 9600bps @ 11.0592MHz //#define BAUD 0xFF40 //19200bps @ 11.0592MHz #define BAUD 0xFFA0 //38400bps @ 11.0592MHz sbit RXB = P3^0; //p3^0为串口接收引脚 UART TX/RX port sbit TXB = P3^1; //p3^1为串口发送引脚 UART TX/RX port sbit LED = P3^3; //p3^3为LED指示灯 UART TX/RX port sbit P3_2 = P3^2; //p3^2为遥控数据D0输入 UART TX/RX port extern bit T2Action;//T2定时器是否正在工作标志位 extern bit RECEIVE; //接收无线遥控标志位 #endif

time0中断 interrupt.c

//Timer interrupt routine for UART #include "../inc/config.h" #include "../inc/interrupt.h" unsigned char TBUF,RBUF; unsigned char TDAT,RDAT; unsigned char TCNT,RCNT; unsigned char TBIT,RBIT; bit TING,RING; bit TEND,REND;void tm0() interrupt 1 { #if 0if (RING){if (--RCNT == 0){RCNT = 3; //reset send baudrate counterif (--RBIT == 0){RBUF = RDAT; //save the data to RBUFRING = 0; //stop receiveREND = 1; //set receive completed flag}else{RDAT >>= 1;if (RXB) RDAT |= 0x80; //shift RX data to RX buffer}}}else if (!RXB){RING = 1; //set start receive flagRCNT = 4; //initial receive baudrate counterRBIT = 9; //initial receive bit number (8 data bits + 1 stop bit)} #endifif (--TCNT == 0){TCNT = 3; //reset send baudrate counterif (TING) //judge whether sending{if (TBIT == 0){TXB = 0; //send start bitTDAT = TBUF; //load data from TBUF to TDATTBIT = 9; //initial send bit number (8 data bits + 1 stop bit)}else{TDAT >>= 1; //shift data to CYif (--TBIT == 0){TXB = 1;TING = 0; //stop sendTEND = 1; //set send completed flag}else{TXB = CY; //write CY to TX port}}}} }

time0中断头文件 interrupt.h

#ifndef _INTERRUPT_H #define _INTERRUPT_H extern unsigned char TBUF,RBUF; extern unsigned char TDAT,RDAT; extern unsigned char TCNT,RCNT; extern unsigned char TBIT,RBIT; extern bit TING,RING; extern bit TEND,REND; #endif

子程序 subPG.c

#include "../inc/config.h" #include "../inc/subPG.h" #include <intrins.h> unsigned char string[NUM_LEN];/系统初始化函数/// void UART_INIT() { TMOD = 0x00; //初始化timer0 in 16-bit auto reload modeTL0 = BAUD;TH0 = BAUD>>8; //初始化 timer0 为自动重装模式TR0 = 1; //tiemr0 start runningET0 = 1; //enable timer0 interruptPT0 = 1; //improve timer0 interrupt priorityEA = 1; //open global interrupt switchT2H=0x00;T2L=0x00;AUXR |= 0X90; //1001 0100T2Action=0;RECEIVE=0; //接收无线遥控标志位TING = 0;RING = 0;TEND = 1;REND = 0;TCNT = 0;RCNT = 0; }void lcd_wdat(unsigned char dat) { //写入字符显示数据到LCDif (TEND){TEND = 0;TBUF = dat;TING = 1;} } /演示100MS函数/// void YS100ms(unsigned char n) //@11.0592MHz {unsigned char i, j, k,l;for(l=n; l>0; l--) {_nop_();_nop_();i = 5;j = 52;k = 195;do{do{while (--k);} while (--j);} while (--i);} }void num2char(long num,unsigned char* string) //一定要注意这里的字符串长度。 {int i;i = NUM_LEN-1; // 与这里的字符串长度相对应，从最后一个字符位开始。do {string[i] = num%10+'0'; //加上 ‘0’ 就是字符了！num/=10;i = i -1;} while(i>=0); }void send_num2uart(long num){ //发送数字到串口通信。unsigned char i;num2char(num,string);// YS100ms(50);for(i=0; i<sizeof(string); i++){while (!TEND);{TEND = 0;TBUF = string[i];TING = 1;}} }

子程序头文件 subPG.h

#ifndef _SUBPG_H #define _SUBPG_H #include "../inc/interrupt.h"extern void UART_INIT(); extern void lcd_wdat(unsigned char dat); extern void YS100ms(unsigned char n); //@11.0592MHz extern void num2char(long num,unsigned char* string); //一定要注意这里的字符串长度。 extern void send_num2uart(long num); //发送数字到串口通信。#endif

总结

以上是生活随笔为你收集整理的ev1527、pt2262等433/315MHZ芯片用stc单片机解码，含源程序的全部内容，希望文章能够帮你解决所遇到的问题。

如果觉得生活随笔网站内容还不错，欢迎将生活随笔推荐给好友。