Blinking Led with PIC12F675

 

// CONFIG

#pragma config FOSC = INTRCCLK  // Oscillator Selection bits (INTOSC oscillator: CLKOUT function on GP4/OSC2/CLKOUT pin, I/O function on GP5/OSC1/CLKIN)

#pragma config WDTE = OFF       // Watchdog Timer Enable bit (WDT disabled)

#pragma config PWRTE = OFF      // Power-Up Timer Enable bit (PWRT disabled)

#pragma config MCLRE = ON       // GP3/MCLR pin function select (GP3/MCLR pin function is MCLR)

#pragma config BOREN = OFF      // Brown-out Detect Enable bit (BOD disabled)

#pragma config CP = OFF         // Code Protection bit (Program Memory code protection is disabled)

#pragma config CPD = OFF        // Data Code Protection bit (Data memory code protection is disabled)

// #pragma config statements should precede project file includes.

// Use project enums instead of #define for ON and OFF.

#define _XTAL_FREQ 4000000

#include <xc.h>

 void delay_ms(unsigned int milliseconds)

 {

   while(milliseconds > 0)

   {

       __delay_ms(1);

      milliseconds--;

    }

 }

 

void blink(unsigned int i){

    GPIO0=1;

    delay_ms(i);

    GPIO0=0;

    delay_ms(i);

}

void main(void) {

    TRISIO0=0;

    while(1){

        for(int i=0;i<=500;i+=100)

            blink(i);

        for(int i=500;i>=0;i-=100)

            blink(i);

    }

    return;

}