Sony Protocol C Code Help

[Suraj143]

I wrote a code to decode sony remotes 7 bit command code & display the code in PORTB LEDs.But the below code won't work.

while(1){
             capture_data();
             PORTB = cmd_byte;
             }




//PORTC.B2 = IR Input
void capture_data(){
unsigned short bit_counter, mask_byte;
unsigned int settle_time;

wait_Loop:
   if(PORTC.B2>0){
             settle_time++;
             delay_uS(1);
             delay_uS(1);
             if(settle_time==0)
             IR_Flag_Register = 0b10000000;  //new key flag
             return;
              }

Read_IR();
    if (((IR_Flag_Register & 0b01111111) & 0b00001000) ==0)        //start bit detect??
         goto  wait_Loop;                          //not recieved start bit
        cmd_Byte = 0x00;
        mask_byte = 0b00000001;
        bit_counter = 1;
Next_Rcvbit:
        Read_IR();
        if((IR_Flag_Register & 0b00001001) > 0)goto wait_Loop; //re-capture if error
        if((IR_Flag_Register & 0b01111111)== 0b00000100)
           cmd_Byte = cmd_byte | mask_byte;
        mask_byte = mask_byte<<1;
        bit_counter++;
        if(bit_counter!=8)goto Next_Rcvbit;
        }
//==================================================
void Read_IR(){
unsigned int deltime = 0;
width = 0;

still_High:  if(PORTC.B2>0){
             deltime++;
             //if(deltime!=0)goto still_High;
             //{
              //IR_Flag_Register = IR_Flag_Register | 0b00000001;  //error flag
              //return;}
              }
measure: delay_uS(1);   //high pulse detected
         delay_uS(1);
         delay_uS(1);
         delay_uS(1);
         delay_uS(1);
         delay_uS(1);
         delay_uS(1);
         delay_uS(1);
         delay_uS(1);
         delay_uS(1);
         delay_uS(1);
         width++;
         if(PORTC.B2==0) goto measure;
         check_pulse();
         }
         
void check_pulse(){
 IR_Flag_Register = IR_Flag_Register & 0b10000000;
 
 if ((width>20) && (width<45) ){   //320-720
 IR_Flag_Register = IR_Flag_Register | 0b00000010;   //zero flag  }
 return;}
 if ((width>45) && (width<90) ) {  //720-1440
 IR_Flag_Register = IR_Flag_Register | 0b00000100;   //ones flag
 return;}
 if ((width>140) && (width<160) ) {  //2240-2560
 IR_Flag_Register = IR_Flag_Register | 0b00001000;   //start flag
 return;}
 if (width<20) {                   //<320
 IR_Flag_Register = IR_Flag_Register | 0b00000001;   //error flag
 return;}
 if (width>200){                   //>3200
 IR_Flag_Register = IR_Flag_Register | 0b00000001;   //error flag
 return;}
 }

 

[Nigel Goodwin]

There are assembler versions in my tutorials, and I beleive Atomsoft has converted them to C?.

 

[Suraj143]

Hi nigel I earlier used your asm codes & it worked well.

The same principal I converted to C but the above didn't work.I think I have a C code problem.

 

[Ian Rogers]

I converted them to C as well... Directly from the asm tutorials

See my signature...

Come to think of it where is everyone's signature????

Link is here https://www.electro-tech-online.com/threads/directorial-antenna.467/

 

[Nigel Goodwin]

Come to think of it where is everyone's signature????

Good question!