TEXT 10
Bomb timer with avr By Hightechrobo on 20th February 2025 07:19:15 AM
  1. #include <mega32.h>
  2. #include <delay.h>
  3. #include <stdbool.h>
  4.  
  5. #define ddigit_B   DDRB
  6. #define digit_B   PORTB
  7.  
  8. #define ddigit_C   DDRC
  9. #define digit_C   PORTC
  10. const unsigned char digit[10] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
  11.  
  12.  
  13. void main(void)
  14. {
  15.     char a = 0;
  16.     int ta = 0;
  17.     int ti = 0;
  18.     int timernum = 0;
  19.     int timer = 0;
  20.     bool start = 0 ;
  21.  
  22.    ddigit_B = 0xff;
  23.    ddigit_C = 0xff;
  24.   DDRA = 0xFF ;
  25.  
  26.   DDRD = 0x04;
  27.   PORTD = 0x03;
  28.  
  29. while (1)
  30.       {
  31.  
  32.          if(ta > 50){
  33.          PORTA = a;
  34.          a >>= 1;
  35.          if(a==0)
  36.             a = 0b10000000;
  37.          }
  38.  
  39.  
  40.          if( (PIND & 1) == 0 && start == 0 && ti > 500){
  41.             timernum ++ ;
  42.             ti = 0;
  43.          }
  44.  
  45.          if((PIND & 2) == 0 && start != 1 && ti > 500){
  46.             start = 1;
  47.             ti = 0;
  48.          }
  49.          else if((PIND & 2) == 0 && start && timernum == 0){
  50.             start  = 0;
  51.             PORTD = 0b00000011;
  52.          }
  53.  
  54.          if(start && timernum && timer > 50) {
  55.             timernum --;
  56.             timer = 0;
  57.  
  58.          }
  59.  
  60.          if(timernum == 0 && start){
  61.             PORTD = 0x07;
  62.          }
  63.  
  64.  
  65.  
  66.  
  67.  
  68.  
  69.  
  70.       digit_B = digit[timernum/10];
  71.       digit_C = digit[timernum%10];
  72.  
  73.  
  74.  
  75.  
  76.  
  77.  
  78.          delay_ms(1);
  79.          ta ++ ;
  80.          ti ++;
  81.          timer ++;
  82.       }
  83. }

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