Answer to Question #154158 in C for Rakibul

Question

Write C code for Atmega32 programming for the following scenario:

Divide the last two digits of your ID with 9 and find the remainder. (last two digits of my id is: 58)

If the remainder is even, then use a 7-segment Common Anode Display. If the remainder is odd, then use a 7-segment Common Cathode Display.

Now connect PORTC pin no. 0 to 6 with the display and display the last digit of your ID.

Answer 1

#ifndef F_CPU
#define F_CPU 16000000UL // 16 MHz clock speed
#endif
#include <stdio.h>
#include <avr/io.h>
#include <util/delay.h>


#define PORT_7_SEGMENT PORTB
#define DDR_7_SEGMENT DDRB




void common_anode(int count){

switch (count)
      {
         case 0:
         PORT_7_SEGMENT=0b10001000;
         break;

         case 1:
         PORT_7_SEGMENT=0b10111110;
         break;

         case 2:
         PORT_7_SEGMENT=0b00011001;
         break;

         case 3:
         PORT_7_SEGMENT=0b00011100;
         break;

         case 4:
         PORT_7_SEGMENT=0b00101110;
         break;

         case 5:
         PORT_7_SEGMENT=0b01001100;
         break;

         case 6:
         PORT_7_SEGMENT=0b01001000;
         break;

         case 7:
         PORT_7_SEGMENT=0b10111100;
         break;

         case 8:
         PORT_7_SEGMENT=0b00001000;
         break;

         case 9:
         PORT_7_SEGMENT=0b00001100;
         break;
         }

}
void common_cathode(int  count ){


switch (count)
      {
         case 0:
         PORT_7_SEGMENT=0b01110111;
         break;

         case 1:
         PORT_7_SEGMENT=0b01000001;
         break;

         case 2:
         PORT_7_SEGMENT=0b1100110;
         break;

         case 3:
         PORT_7_SEGMENT=0b11100011;
         break;

         case 4:
         PORT_7_SEGMENT=0b11010001;
         break;

         case 5:
         PORT_7_SEGMENT=0b10110011;
         break;

         case 6:
         PORT_7_SEGMENT=0b10110111;
         break;

         case 7:
         PORT_7_SEGMENT=0b01000011;
         break;

         case 8:
         PORT_7_SEGMENT=0b11110111;
         break;

         case 9:
         PORT_7_SEGMENT=0b11110011;
         break;
         }







}
int main(void)
{
int d;
printf(" ENTER LAST 2 DIGITS OF YOUR ID ");
    scanf("%d", &n);
    int   remainder =d % 2;
    if(remainder==0){
    common_anode(remainder);
    
    
    }else{
    
    common_cathode(remainder);
    }

  DDRC = 0xFF; //Nakes PORTC as Output
  while(1) //infinite loop
  {
    PORTC =0x5;
    _delay_ms(2500);
    PORTC= 0x00;
    _delay_ms(2500);
    PORTC =0x8;
    _delay_ms(2500);
    PORTC= 0x00;
      PORTC =0x5;
      PORTC =0x8;
       _delay_ms(2500);
  }
}