int.lst

用51单片机实现IR解码

 146          {
 147   1      
 148   1      
 149   1      
 150   1      
 151   1        
 152   1              //mast the transfer interrupt
 153   1              if (TI) 
 154   1              {
 155   2                      TI=0; 
 156   2                      return;
 157   2              }
 158   1          //get four bytes of a frame 
 159   1              RS232_Receive_Buffer=SBUF; 
 160   1              
 161   1       
 162   1                      RI=0;
 163   1                      
 164   1                      
 165   1      }
 166          
 167          
 168          #if (IR_SYSTEM==NEC_IR_SYSTEM)
              #if( SYSTEM_CRYSTAL     ==USE_CRYSTAL_40M)
              
              #define NEC_IR_KEY_VALID_INTERVAL                5          //  >(108-9-2.75)/19.6                //crystal=40M
              #define NEC_IR_0_BIT_WIDTH                       3750     /* //1.125ms/(12/fs*1000)*/
              #define NEC_IR_1_BIT_WIDTH                              7500      /* //2.25ms/(12/fs*1000)*/
              #define NEC_IR_START_BIT_WIDTH         45000    /* //13.5ms/(12/fs*1000)*/
              #define NEC_IR_TIME_BIAS                          1000       /* //0.3ms/(12/fs*1000)*/
              #define NEC_IR_REPEAT_BIT_WIDTH       37500      /*//11.25ms/(12/fs*1000)*/
              
              #define NEC_IR_0_BIT_WIDTH_MIN                       2750      //3750-1000
              #define NEC_IR_1_BIT_WIDTH_MIN                  6500       //7500-1000
C51 COMPILER V8.02   INT                                                                   10/16/2006 17:42:27 PAGE 4   

              #define NEC_IR_START_BIT_WIDTH_MIN             35000     //4500-1000
              #define NEC_IR_REPEAT_BIT_WIDTH_MIN           36948     //37500-552
              
              #define NEC_IR_0_BIT_WIDTH_MAX                      4750      //3750+1000
              #define NEC_IR_1_BIT_WIDTH_MAX                  8500       //7500+1000
              #define NEC_IR_START_BIT_WIDTH_MAX             46000     //45000+000
              #define NEC_IR_REPEAT_BIT_WIDTH_MAX           38052     //37500+552
              
              #elif ( SYSTEM_CRYSTAL  ==USE_CRYSTAL_24M598_X2)
              
              
              
              
              //the timer2 max overflow T=15.98ms
              #define NEC_IR_KEY_VALID_INTERVAL                7         //  >(108-9-2.75)/15.98                //crystal=24.5
             -98 X2M=49.196072
              #define NEC_IR_0_BIT_WIDTH                       4612    /*  1.125ms/(12/fs*1000)*/
              #define NEC_IR_1_BIT_WIDTH                              9224    /*  2.25ms/(12/fs*1000)*/
              #define NEC_IR_START_BIT_WIDTH         55345  /*  13.5ms/(12/fs*1000)*/
              #define NEC_IR_TIME_BIAS                          1229     /* 0.3ms/(12/fs*1000)*/
              #define NEC_IR_REPEAT_BIT_WIDTH       46121    /* 11.25ms/(12/fs*1000)*/
              
              #define NEC_IR_0_BIT_WIDTH_MIN                       3612      //4612-1000
              #define NEC_IR_1_BIT_WIDTH_MIN                  8224       //9224-1000
              #define NEC_IR_START_BIT_WIDTH_MIN             54345     //55345-1000
              #define NEC_IR_REPEAT_BIT_WIDTH_MIN           45121   //46121-1000
              
              #define NEC_IR_0_BIT_WIDTH_MAX                      5712      //4612+1000
              #define NEC_IR_1_BIT_WIDTH_MAX                  10224       //9224+1000
              #define NEC_IR_START_BIT_WIDTH_MAX             56345     //55345+1000
              #define NEC_IR_REPEAT_BIT_WIDTH_MAX           47121    //46121+1000
              
              
              
              #elif ( SYSTEM_CRYSTAL  ==USE_CRYSTAL_40M039_X2)
              
              
              
              
              //the timer2 max overflow T=15.98ms
              #define NEC_IR_KEY_VALID_INTERVAL                12         //  >(108-9-2.75)/            //crystal=80.078096
              
              #define NEC_IR_0_BIT_WIDTH                       7507      /* 1. 125ms/(12/fs)*1000*/
              #define NEC_IR_1_BIT_WIDTH                              15014     /*2.25ms/(12/fs)*1000*/
              //#define NEC_IR_START_BIT_WIDTH              90085    /*13.5ms/(12/fs)*1000*/
              
              //for the X=80.07, the MAX time of TIMER2 is 9.8ms, so the 11.25 mean that a overflow will take place ,the
             -n remain 11.25-9.8=1.45ms
              
              #define NEC_IR_REPEAT_BIT_WIDTH      9675              /*(11.25-9.8)ms/(12/fs*1000)*/
              
              
              //#define NEC_IR_TIME_BIAS                          2001      /*0.2ms/(12/fs)*1000)*/
              
              
              #define NEC_IR_0_BIT_WIDTH_MIN                    6007   
              #define NEC_IR_1_BIT_WIDTH_MIN                  13514
              //#define NEC_IR_START_BIT_WIDTH_MIN           5000   
              #define NEC_IR_REPEAT_BIT_WIDTH_MIN             9001 
              
              #define NEC_IR_0_BIT_WIDTH_MAX                     9000 
              #define NEC_IR_1_BIT_WIDTH_MAX                  16514 
C51 COMPILER V8.02   INT                                                                   10/16/2006 17:42:27 PAGE 5   

              //#define NEC_IR_START_BIT_WIDTH_MAX           5800    
              #define NEC_IR_REPEAT_BIT_WIDTH_MAX           11613     
              
              #elif(SYSTEM_CRYSTAL    ==USE_CRYSTAL_27M)
                      
              
              
              #define NEC_IR_KEY_VALID_INTERVAL                4        //  >(108-9-2.75)/            //crystal=27
              
              #define NEC_IR_0_BIT_WIDTH                       2531      /* 1.125ms/(12/fs)*1000*/
              #define NEC_IR_1_BIT_WIDTH                              5062     /*2.25ms/(12/fs)*1000*/
              
              //for the X=27, the MAX time of TIMER2 is 28.9ms, so it mean that only one overflow will take place betwee
             -n key code part and  the repeat part
              //then there is  11.25ms bit
              
              #define NEC_IR_REPEAT_BIT_WIDTH         25312              /*11.25ms/(12/fs)*1000*/
              
              //err=0.4ms =900(X=27M)
              #define NEC_IR_0_BIT_WIDTH_MIN                  1900 // 1600  // 2025     
              #define NEC_IR_1_BIT_WIDTH_MIN                  4100  //4557
              #define NEC_IR_REPEAT_BIT_WIDTH_MIN             21000
              
              #define NEC_IR_0_BIT_WIDTH_MAX                 3400//    3034 
              #define NEC_IR_1_BIT_WIDTH_MAX               5900//     5568
              #define NEC_IR_REPEAT_BIT_WIDTH_MAX           29000   
              
              
              #else
              
              #define NEC_IR_KEY_VALID_INTERVAL               3         //  >(108-9-2.75)/35.7                        //crystal=22118M
              #define NEC_IR_0_BIT_WIDTH                       2073    /*  //1.125ms/(12/fs*1000)*/
              #define NEC_IR_1_BIT_WIDTH                              4147     /*  //2.25ms/(12/fs*1000)*/
              #define NEC_IR_START_BIT_WIDTH         24882    /*13.5ms/(12/fs*1000)*/
              #define NEC_IR_TIME_BIAS                           552         /*0.3ms/(12/fs*1000)*/
              #define NEC_IR_REPEAT_BIT_WIDTH       20736     /*11.25ms/(12/fs*1000)*/
              
              #define NEC_IR_0_BIT_WIDTH_MIN             1521                 //2073-552
              #define NEC_IR_1_BIT_WIDTH_MIN          3595             //4147-552
              #define NEC_IR_START_BIT_WIDTH_MIN       24330           //24882-552
              #define NEC_IR_REPEAT_BIT_WIDTH_MIN           20184     //20736-552
              
              #define NEC_IR_0_BIT_WIDTH_MAX                     2625     //2073+552
              #define NEC_IR_1_BIT_WIDTH_MAX                   4699      //4147+552
              #define NEC_IR_START_BIT_WIDTH_MAX            25434     //24882+552
              
              #define NEC_IR_REPEAT_BIT_WIDTH_MAX           21288     //20736+552
              
              #endif
              
              CODE U8  IR_Key_Repeat_Enable_Table[]=
              {
                                                 0,//KEY_IR_0=                                                                0x00,
                                                      0,//KEY_IR_1   =                                                               0x01,
                                                      0,//KEY_IR_2  =                                                 0x02,
                                                      0,//KEY_IR_3    =                                                       0x03,
                                                      0,//KEY_IR_4    =                                               0x04,
                                                      0,//KEY_IR_5    =                                                              0x05,