// print 0-9 on  common anode 7 segment display with the 1sec delay hardware same as assignment 1 set 1 for all exp
//select common anode and connect common pin to vcc
#include <stdint.h>

#define DDRA  (*(volatile uint8_t*)0x21)
#define PORTA (*(volatile uint8_t*)0x22)

uint8_t seg[10] = {
    0x3F,
    0x06,
    0x5B,
    0x4F,
    0x66,
    0x6D,
    0x7D,
    0x07,
    0x7F,
    0x6F
};

void delay1sec(void){
    TCNT1 = 0;
    TCCR1A = 0x00;
    TCCR1B = 0x05;
    while (TCNT1 < 15625);
    TCCR1B = 0x00;
}

int main(void){
    DDRA = 0x7F;

    while (1){

      volatile uint8_t i = 0;
      for(i = 0; i<10; i++){
        PORTA = ~seg[i];
        delay1sec();
      }
    }
}