遥控解码大家谈,内有精美遥控器图片

只看该作者 · 2008-9-10 09:25

#include <REG52.H>
#define uchar unsigned char
#define uint  unsigned int
//11.0592晶振
#define TIME_0_00MS        0x0000
#define TIME_1_00MS        0x039a
#define TIME_1_13MS        0x0480
#define TIME_2_00MS        0x0733
#define TIME_2_50MS        0x0900
#define TIME_13_2MS        0x2ecd
#define TIme_11_ms          (TIME_13_2MS-TIME_2_50MS )
#define TIME_20_0MS        0x47ff
#define TIME1_LOAD        (0xffff - TIME_20_0MS)
unsigned char Irdat;
bit Irok;
uchar IrCode［4］;
uchar  IrCodeIndex=0;
void IrInit(void)                     //遥控接收初始化
{
    TMOD &=0xf0;
    TMOD |= 0x01;
    TH0    = TIME1_LOAD >> 8;
    TL0    = TIME1_LOAD & 0xff;
    IP|=0x01;
    IT0=1;
    TR0   = 1;
    EX0=1;
    EA=1;
    ET0=1;
}
unsigned char IrGetcode(void)//返回遥控码
{
        Irok=0;
        return(Irdat);
}
bit IrTest(void)//检查有无遥控信号
{
    return Irok;
}
void int0_isr(void) interrupt 0 using 1       //遥控使用外部中断0,接P3.2口
{
    unsigned int timer;
    TR0 = 0;
    timer = ((TH0 << 8) | TL0) - TIME1_LOAD;
    TH0 = TIME1_LOAD >> 8;
    TL0 = TIME1_LOAD & 0xff;
    TR0 = 1;
    if(timer > TIME_1_00MS && timer < TIME_1_13MS)//data 0
    {
        IrCode［IrCodeIndex/8］<<=1;
        IrCodeIndex++ ;
    }
    else if(timer > TIME_2_00MS && timer < TIME_2_50MS)//data 1
    {
        IrCode［IrCodeIndex/8］<<=1;
        IrCode［IrCodeIndex/8］+=1;
        IrCodeIndex++;
    }
    else if(timer == TIME_0_00MS || timer > TIME_13_2MS)
    {
        IrCode［0］=0;
        IrCode［1］=0;
        IrCode［2］=0;
        IrCode［3］=0;
        IrCodeIndex=0;
    }
    else if(timer < TIME_13_2MS && timer > TIme_11_ms)//自动重发功能。
    {
       Irok=1;
    }
}
void time0_isr(void) interrupt 1 using 1       //遥控使用定时计数器0
{
    TR0 = 0;
    TH0 = TIME1_LOAD >> 8;
    TL0 = TIME1_LOAD & 0xff;
    if(IrCodeIndex ==32)
     {
          if(IrCode［2］ ==(uchar)(~IrCode［3］))
          {
               Irdat = IrCode［2］;
             Irok = 1;
          }
     }
}
/******************************************************/
/******************************************************/
void Uart_T1_init(void)
{
    SCON    =   0x40;
    TMOD    &=  0x0f;
    TMOD    |=  0x20;
    TH1     =   0xFD;   //9600B ,11.0592Mhz
    TL1     =   0xFD;
    PCON    &=  0x7f;
    TR1     =   1;
    TI      =   1;
}
void DebugOut( uchar c )
{
    SBUF    =   c;
    while(TI!=1);
    TI=0;
}
/******************************************************/
/******************************************************/
void main(void)
{
    IrInit();
    Uart_T1_init();
    EA=1;
    while(1)
    {
        if (IrTest())
        {
            DebugOut(IrGetcode());
        }
        PCON |=0x01;
    }
}