timer.c

ipod无线遥控接收端,可控制播放,暂停,音量,前进,后退.

#include "hal.h"

//==================================================
#pragma vector=TIMER2_COMPA_vect 
__interrupt void timer2_compa_isr(void)
{
    static BYTE Count=0;   
    
    switch(++Count){
    case 1:
        SpiStrobe(CCxxx0_SFRX);
        SpiStrobe(CCxxx0_SRX);
        RX_STATE=1;
        SYN_FIND=0;
        break;
        
    case 4:
        if(SYN_FIND == 0){
          PCINT0_DISABLE();
          RX_STATE=0;
          SpiStrobe(CCxxx0_SIDLE);
          SpiStrobe(CCxxx0_SPWD);
          PCINT0_ENABLE();
        }
        break;
        
    case 8:
        Count=0;
        if(CNT_RETURN<180){
          CNT_RETURN++;
          if(CNT_RETURN==180){
            if((KeyLast == 4)||(KeyLast == 1)){
              IpodSend(5);
              KeyLast = 5;
            }
          }
        }
        break;
    }
}