Assume that eight DIP switches are connected to PORTB and eight LEDs are connect

Question

Assume that eight DIP switches are connected to PORTB and eight LEDs are connected to PORTC. Assume that the switch values are normally high. Turn all of the LEDs on and wait in a loop until one of the switches becomes zero. At that time, send 0x55 to PORTC. Please write in C. I am using the HCS12 Assume that eight DIP switches are connected to PORTB and eight LEDs are connected to PORTC. Assume that the switch values are normally high. Turn all of the LEDs on and wait in a loop until one of the switches becomes zero. At that time, send 0x55 to PORTC. Please write in C. I am using the HCS12

Explanation / Answer

Executable code

#include<stdio.h>
#include<conio.h>
int main()
{
    int i;
    int portB = 11111111;
    int portC=00000000;
    printf(" all leds are off ");
        portC= (portC|255 );
    printf("%x ",portC);
    printf(" now all leds are 0 ");
    for(i=0;i<8;i++)
    {
        if(portC!=11111111)
        {
            portC=55;
            printf("%d ",portC);
            break;
        }
    }
    getch();
    return 0;
}        

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