LED blinking program for Pic microcontroller

Here is the program for Pic microcontroller PIC16F877A

to blink a LED connected to B3 of PORTC,

This program works for Mplab. or using HiTECH PRO Lite compiler.

PICClite code may be

#include

#include 'delay.h'

#define _XTAL_FREQ 4000000

_CONFIG(MCLREN & UNPROTECT & BORDIS & WDTDIS & PWRTEN & INTIO);

void main()

{

TRISC=0;

while (1)

{

PORTC = 8;

DelayMs(250);DelayMs(250);

PORTC = 0;

DelayMs(250);DelayMs(250);

}

}

in PIC_Clite , 'delay.h' has to be included because its MACRO, but in PRO its inbuilt

#include

#define _XTAL_FREQ 4000000

_CONFIG(MCLREN & UNPROTECT & BORDIS & WDTDIS & PWRTEN & INTIO);

void main()

{

TRISC=0;

while (1)

{

PORTC = 8;

__delay_ms(100);_delay_ms(100); // use this delay to test the code

__delay_ms(100);_delay_ms(100);

PORTC = 0;

__delay_ms(100);_delay_ms(100);

__delay_ms(100);_delay_ms(100);

}

}

i didnt use _delay(100000); because whn Xtal Freq is high(20Mz) the delay changes & you will not be able to see the LEDs blinking. ensure that watchdog timer is disabled in _CONFIG, hope it works..

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