红外接收程序

最新推荐文章于 2024-12-29 00:15:00 发布

SF_BVC

最新推荐文章于 2024-12-29 00:15:00 发布

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CC 4.0 BY-SA版权

文章标签： timer c

本文链接：https://blog.youkuaiyun.com/SF_BVC/article/details/5908453

本文介绍了一段基于8051内核单片机的红外接收程序，用于电视机遥控器的解码。程序中包含了定时器中断处理、超时判断和数据接收流程，以及STC12C54XX单片机6路遥控电路的适配应用。

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volatile UINT8 Counter;
static UINT8 DatMax;

void IrProcess(void)
{
UINT8 i;
UINT8 j;
UINT8 tmpDat;
UINT8 resCheck;
bool TimeOutFlag;
if(RecvFlag == TRUE)
  return;
if(!Irda)
{
  Counter = 0;
  TH1 = 6;
  TL1 = 6;
  TR1 = 1;
  while(!Irda);
  TR1 = 0;
  //判断是否收到头
  if(Counter < 4)
   return;

  Counter = 0;
  TH1 = 6;
  TL1 = 6;
  TR1 = 1;
  TimeOutFlag = false;
  while(Irda)
  {
   //是否超时
   if(Counter >= 40)
   {
    TR1 = 0;
    return;
   }
  }
  //接收数据
  i = 0;
  while(1)
  {
   for(j=0;j<8;j++)
   {
    TR1 = 0;
    TH1 = 131;
    TL1 = 131;
    Counter = 0;
    while(!Irda);
    Counter = 0;
    TR1 = 1;
    while(Irda)
    {
     if(Counter > 6)
     {
      TimeOutFlag = true;
      break;
     }
    }
    if(TimeOutFlag == true)
     break;

    if(Counter >= 3)
     tmpDat = (tmpDat << 1) | 1;
    else
     tmpDat = tmpDat << 1;

   }
   if(TimeOutFlag == true)
    break;
   IrBuff[i++] = tmpDat;
  }
  DatMax = i;
  resCheck = IrBuff[DatMax - 1] | IrBuff[DatMax - 2];
  if((resCheck == 0xff) && (IrBuff[2] != 0xff))
  {
   RecvFlag = TRUE;
   LedR = 0;
   RecvTick = Tick10;
   RecvLen = DatMax;
  }

}
}