receive.lst

红外解码

C51 COMPILER V8.02   RECEIVE                                                               08/23/2007 09:06:17 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE RECEIVE
OBJECT MODULE PLACED IN receive.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE receive.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include<c8051f020.h>
   2          
   3          /*SET 16bit REGISTER*/
   4          sfr16 TMR3   = 0x94;
   5          sfr16 TMR3RL = 0x92;
   6          
   7          #define EXT_OSCIL 1
   8          #define INFRA_IN P3^7
   9          #define T_3MS 0xf533
  10          #define T_0_8MS 0xfd1f
  11          
  12          
  13          void Port_IO_Init()
  14          {
  15   1          // P0.0  -  TX0 (UART0), Open-Drain, Digital
  16   1          // P0.1  -  RX0 (UART0), Open-Drain, Digital
  17   1          // P0.2  -  SCK  (SPI0), Open-Drain, Digital
  18   1          // P0.3  -  MISO (SPI0), Open-Drain, Digital
  19   1          // P0.4  -  MOSI (SPI0), Open-Drain, Digital
  20   1          // P0.5  -  NSS  (SPI0), Open-Drain, Digital
  21   1          // P0.6  -  SDA (SMBus), Open-Drain, Digital
  22   1          // P0.7  -  SCL (SMBus), Open-Drain, Digital
  23   1      
  24   1          // P1.0  -  TX1 (UART1), Open-Drain, Digital
  25   1          // P1.1  -  RX1 (UART1), Open-Drain, Digital
  26   1          // P1.2  -  CEX0 (PCA),  Open-Drain, Digital
  27   1          // P1.3  -  CEX1 (PCA),  Open-Drain, Digital
  28   1          // P1.4  -  CEX2 (PCA),  Open-Drain, Digital
  29   1          // P1.5  -  CEX3 (PCA),  Open-Drain, Digital
  30   1          // P1.6  -  CEX4 (PCA),  Open-Drain, Digital
  31   1          // P1.7  -  CP1 (Cmpr1), Open-Drain, Digital
  32   1      
  33   1          // P2.0  -  T0 (Timer0), Open-Drain, Digital
  34   1          // P2.1  -  INT0 (Tmr0), Open-Drain, Digital
  35   1          // P2.2  -  T2EX (Tmr2), Open-Drain, Digital
  36   1          // P2.3  -  Unassigned,  Open-Drain, Digital
  37   1          XBR0      = 0x2F;
  38   1          XBR1      = 0x47;
  39   1          XBR2      = 0x44;
  40   1      }
  41          
  42          void Reset_Sources_Init()
  43          {
  44   1          WDTCN     = 0xDE;
  45   1          WDTCN     = 0xAD;
  46   1      }
  47          
  48          void Timer3_Init()
  49          {
  50   1          TMR3CN   &=0xfb;    //关定时器3
  51   1          TMR3RL    = T_3MS;  //延时3ms
  52   1          TMR3      = T_3MS;
  53   1      }
  54          
  55          
C51 COMPILER V8.02   RECEIVE                                                               08/23/2007 09:06:17 PAGE 2   

  56          void Oscillator_Init()
  57          {
  58   1          int i = 0;
  59   1          OSCXCN    = 0x77;
  60   1          for (i = 0; i < 3000; i++);  // Wait 1ms for initialization
  61   1          while ((OSCXCN & 0x80) == 0);
  62   1          OSCICN    = 0x08;
  63   1      }
  64          
  65          
  66          void Init_Device(void)
  67          {
  68   1          Reset_Sources_Init();
  69   1              Port_IO_Init();
  70   1          Timer3_Init();
  71   1      
  72   1      
  73   1      #if EXT_OSCIL
  74   1          Oscillator_Init();
  75   1      #endif
  76   1      }
  77          
  78          sbit P37=P3^7;
  79          unsigned char val[8]=0,i=0,j=0,n=0;
  80          bit h=0,new=0,head_ok=0,got=0;
  81          
  82          void main()
  83          {
  84   1       unsigned char num;
  85   1       Init_Device();
  86   1       IE=0x80;  //开总中断
  87   1       EIE2|=0x21;//开中断7和定时器3中断
  88   1       while(1)
  89   1       {
  90   2        while(!got);
  91   2        if(val[2]+val[3]==0xff)
  92   2        num=val[2];
  93   2        got=0;
  94   2       }
  95   1      }
  96          
  97          
  98          void ex_interrupt() interrupt 19         //下降沿中断，收到低电平开始 
  99          {
 100   1      
 101   1      if(!new)
 102   1       {
 103   2       EIE2&=0xdf;//关中断7
 104   2        P3IF&=0x7f;//清中断7的中断标志
 105   2        Timer3_Init();//定时器3初始化
 106   2        TMR3CN|=0x04;  //开定时器3
 107   2        }
 108   1       else 
 109   1       {
 110   2        while(P37==0&&TMR3CN<0x80);  //等待变高
 111   2        if(TMR3CN<0x80)
 112   2        {
 113   3         P3IF&=0x7f;//清中断7的中断标志 
 114   3         TMR3      = T_0_8MS;//延时0.8ms
 115   3         TMR3CN|=0x04;  //开定时器3
 116   3        }
 117   2       }
C51 COMPILER V8.02   RECEIVE                                                               08/23/2007 09:06:17 PAGE 3   

 118   1      }
 119          
 120          void T3_inter() interrupt 14
 121          {
 122   1        TMR3CN&=0x7f;  //清中断标志
 123   1      
 124   1       if(head_ok==0&&h==0&&P37==0) h=1;
 125   1       else if(head_ok==0&&h==1&&P37==1)
 126   1       {
 127   2        EIE2|=0x20; //开中断7
 128   2        TMR3CN&=0xfb; //关定时器3
 129   2        new=1;h=0;head_ok=1;return;
 130   2       }
 131   1       else if(head_ok)
 132   1       {
 133   2        TMR3CN&=0xfb; //关定时器3
 134   2        
 135   2        if(P37) 
 136   2        {
 137   3         val[n]=val[n]>>1;
 138   3         val[n]|=0x80;
 139   3        }
 140   2       else 
 141   2        val[n]=val[n]>>1;
 142   2        n=++i/8;
 143   2       if(n==4)
 144   2        {
 145   3         i=0;n=0;new=0; head_ok=0;
 146   3         got=1;
 147   3        }
 148   2       } 
 149   1       else           //还原为最原始状态
 150   1       {
 151   2        EIE2|=0x20;//开中断7
 152   2        Timer3_Init();
 153   2        h=0;new=0;
 154   2       } 
 155   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    294    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     11       1
   IDATA SIZE       =   ----    ----
   BIT SIZE         =      4    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)