Controll the entire port of PIC16F877A

https://github.com/anokhramesh/Controll-the-Entire-port-of-PIC16f877A 


#include <xc.h>

#define _XTAL_FREQ 20000000

__CONFIG(FOSC_HS & WDTE_OFF & PWRTE_OFF & BOREN_OFF & LVP_ON & CPD_OFF & WRT_OFF & CP_OFF);

void main(void) {

    TRISD =0x00;// entire pins of port D set as output

    TRISB =0x00;// entire pins of port B set as output

    TRISC =0x00;// entire pins of port C set as output

    

    while(1) 

    {

        PORTD =0xff;// turn the entire portD HIGH

        __delay_ms(500);//wait 1/2 second

        PORTB =0xff;// turn the entire portB HIGH

        PORTC =0x00;// turn the entire portC LOW

    __delay_ms(500);//wait 1/2 second

       PORTD =0x00;// turn the entire portD LOW

       __delay_ms(500);//wait 1/2 second

       PORTB =0x00;// turn the entire portB LOW

       PORTC =0xff;// turn the entire portC HIGH

    __delay_ms(500);//wait 1/2 second

    }

     return;

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