红外模块

遥控器主要是通过解码来控制红外模块，从而完成小车的行走

#include "apue.h"

#include "uart.h"

 

void main()

{

    TMOD = 0x20;    // timer1, auto-load

    TH1 = TL1 = 0xFF;

    PCON = 0x80;    // 57600bps on 11.0592M

    SCON = 0x50;    // UART, REN

    IE = 0x91;      // EA, ES, EX0

    TR1 = 1;        // start

 

    while(1);

}

 

void int0_IR() interrupt 0

{

    size_t lowTime, highTime;

    EX0 = 0;

    memset(UARTBuf, 0, SLEN);

    /* detect leader code pluse */

    TH2 = TL2 = 0;          // Clear timer

    TR2 = 1;                // run timer

    while(IR == 0);         // until MCU detect high level

    TR2 = 0;                // stop timer

    UARTBuf[0] = TH2;       // store timer value

    UARTBuf[1] = TL2;

 

    TH2 = TL2 = 0;

    TR2 = 1;

    while(IR == 1);

    TR2 =0;

    UARTBuf[2] = TH2;

    UARTBuf[3] = TL2;

    UARTBuf[SLEN - 1] = 0x7e;   // end of data

    UARTSend();         // send data to PC over RS232

    delayms(1000);          // delay 1 second

    EX0 = 1;

}

}