STM8红外遥控解码，有做过的吗

只看该作者 · 2013-5-2 14:19

//#################################################################################################
//?
//PC=8LED
//PD4=JR_IN
//NEC协议、PC838红外接收头
//#################################################################################################
#include"STM8S103F.h"
#define uchar unsigned char
#define uint  unsigned int
#define PD5  PD_ODR

#define Sys_Time 13 //14*4us = 56us
#define Sys_Prescaler 1 //2^1 = 2
#define IrIn_PIN() (PD_IDR=0x10) //红外输入端口
uchar IrRecStep = 0;                //接收步骤
uchar IrRecCnt = 0;                //接收时间计数
uchar IrIndex = 0;                   //接收位数
uchar IrRecFlag = 0;                //接收完标志
uchar IrRecBuff[4];                //接收缓冲区
uchar IrRecAddr1;                   //红外地址码
uchar IrRecAddr2;
uchar IrRecData1;                   //红外数据码
uchar IrRecData2;
const uchar IrCode[8]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};

//延时程序
void Delay_ms( uint ms )
{
  uint i,j;
  for( j=0; j < ms; j++ )
  {
for( i=0; i > 1000; i++ )
{;}
  }
}

//红外接收端口初始化
void Ir_Init(void)
{
  PD_DDR = 0x20;    //PD2为中断悬浮输入
  PD_CR1 = 0x21;    //PD5为LED 输出指示
  PD_CR2 = 0x00;
}

//红外接收程序
void Ir_Receive(void)
{
  switch(IrRecStep)
  {
  case 0:
      IrIndex = 0;                //接收位数
      if(!IrIn_PIN())             //检测低电平
      {
         IrRecCnt ++;                //接收时间计数
      }
      else
      {
         if((IrRecCnt>=155)&&(IrRecCnt<=165)) // 码头低电平时间9ms
         {
            IrRecCnt = 1;
            IrRecStep ++;
            IrRecBuff[0] = 0;
            IrRecBuff[1] = 0;
            IrRecBuff[2] = 0;
            IrRecBuff[3] = 0;
         }
         else
         {
            IrRecCnt = 0;
            IrRecStep = 0;
         }
      }
      break;
  case 1:
      if(IrIn_PIN())
      {
         IrRecCnt ++;
         if(IrRecCnt >= 100) //高电平时间过长,退出
         {
            IrRecCnt = 0;
            IrRecStep = 0;
         }
      }
      else
      {
         if((IrRecCnt>=75)&&(IrRecCnt<=85)) // 码头高电平时间4.5ms
         {
            IrRecCnt = 1;
            IrRecStep = 2;
         }
         else
         {
            IrRecCnt =0;
            IrRecStep = 0;
         }
      }
      break;
  case 2:
      if(!IrIn_PIN())
      {
         IrRecCnt ++;
         if(IrRecCnt > 30)          //低电平时间过长,退出
         {
            IrRecCnt = 0;
            IrRecStep = 0;
         }
      }
      else
      {
         if((IrRecCnt >= 8)&&(IrRecCnt <= 12)) //每位开头0.56ms低电平
         {
            IrRecCnt = 1;
            IrRecStep = 3;
         }
         else
         {
            IrRecCnt = 0;
            IrRecStep = 0;
         }
      }
      break;
  case 3:
      if(IrIn_PIN())
      {
         IrRecCnt ++;
      }
      else
      {
         if((IrRecCnt >= 25)&&(IrRecCnt <= 35))  //高电平时间约为1.68ms,则为数据1
         {
            IrRecBuff[IrIndex >> 3] |= IrCode[IrIndex & 0x07]; //相应位置1
            IrRecCnt = 1;
            IrIndex ++;
            IrRecStep = 2;
         }
         else if((IrRecCnt >= 8)&&(IrRecCnt <= 12))//高电平时间约为0.56ms,则为数据0
         {
            IrRecCnt = 1;
            IrIndex ++;
            IrRecStep = 2;
         }
         else
         {
            IrRecStep = 0;    //退出
            IrRecCnt = 0;
         }
         if(IrIndex >= 32) //是否接收完32位
         {
            IrRecStep = 0;
            IrRecFlag = 1;
         }
      }
      break;
  }
}


/*
;================================
;******  红外遥控器键值表  ******

  遥控按键：CH- CH CH+  |<< >>| >| - + EQ 0 100+ 200+
   键值：45H  46H 47H  44H 40H  43H 07H  15H 09H  16H  19H 0DH
遥控按键：1 2 3 4 5 6 7 8 9
      键值：0CH  18H  5EH  08H  1CH  5AH  42H  52H  4AH

;================================  */

//改变PWM占空比
/*
;================================
;******  红外遥控器键******

  遥控按键： - + //两个按键改变PWM占空比
   键值：  07H  15H
遥控按键：1 2 3 4 5 6 7 8 9//九个鞍醇谢欢嘀只ㄑ?
      键值：0CH  18H  5EH  08H  1CH  5AH  42H  52H  4AH

;================================  */

void Ir_PWM_change(void)
{
uchar PWM_value=0;
//PWM_value=IrRecData1 & 0x0F;    //取键码的低四位
if(IrRecData1==0x07)
   PWM_value++;
else if (IrRecData1==0x15)
   PWM_value--;
PD5=0x20;
}

//切换显示模式
void Ir_mode_change(void)
{
uchar mode_value=0;
if(IrRecData1==0x0C) mode_value=1;
else if (IrRecData1==0x18) mode_value=2;
else if (IrRecData1==0x5E) mode_value=3;
  else if (IrRecData1==0x08) mode_value=4;
  else if (IrRecData1==0x1C) mode_value=5;
else if (IrRecData1==0x5A) mode_value=6;
  else if (IrRecData1==0x42) mode_value=7;
else if (IrRecData1==0x52) mode_value=8;
else if (IrRecData1==0x4A) mode_value=9;
}

//时钟初始化
void CLK_Init(void)
{
  CLK_ICKR=0x03;//内部时钟寄存器内部时钟准备就绪，外部时钟开
  CLK_SWCR=0x02;//切换控制寄存器使能切换机制
  CLK_SWR=0xE1;//主时钟切换寄存器选择HSI为主时钟源*/

  while (!(CLK_SWCR & 0x08));
  CLK_CSSR=0x01;//时钟安全系统寄存器
}
//定时器4初始化,56us中断一次
void SysClk_Init(void)
{
  _asm("sim");
  TIM4_IER = 0x00; //禁止中断
  TIM4_EGR = 0x01; //允许产生更新事件
  TIM4_PSCR = Sys_Prescaler;
  TIM4_ARR = Sys_Time;
  //TIM4_CNTR = Sys_Time;
  TIM4_CR1 = 0x01;
  TIM4_IER = 0x01;
  _asm("rim");
}
//TIM4中断入口
@far @interrupt void TIM4_UPD_OVF_IRQHandler (void)
{
  TIM4_SR = 0x00;
  Ir_Receive();
}

//初始化
void Devices_Init(void)
{
  Delay_ms(200);
  CLK_Init();
  Ir_Init();
  SysClk_Init();
}

//主程序
void main( void )
{
  Devices_Init();
  while(1)
  {
if(IrRecFlag == 1)
{
   IrRecAddr1 = IrRecBuff[0];
   IrRecAddr2 = IrRecBuff[1];
   IrRecData1 = IrRecBuff[2];
   IrRecData2 = IrRecBuff[3];
   IrRecFlag = 0;
}

      Ir_PWM_change();
Ir_mode_change();
}
}

有问题，求高手帮忙指正问题