Switch and LED with PIC16F877A Starter Board Revision as of 16:23, 27 April 2016 by Sharana (Talk | contribs) (diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

In this tutorial we will learn how to blink the LED's with PIC16F877 Starter Board.
The Explore Starter PIC board has two on board LED's which are connected to PORT D0 and PORT D1.

Steps

1. Configure the PORTS as outputs using TRIS registers.
2. Turn ON all the LEDs and wait for some time.
3. Turn OFF all the LEDs and wait for some time.

Code

	#include "gpio.h"
	#define LED PD_0 // Led is connected to PORTD.0
	#define SW1 PD_2 // Switch is connected to PORTD.2
	/* start the main program */
	void main()
	{
	uint8_t value;
	GPIO_PinDirection(SW1,INPUT); // Configure the switch pin as Input
	GPIO_PinDirection(LED,OUTPUT); // Configure the Led pin as OUTPUT
	while(1)
	{
	value = GPIO_PinRead(SW1); // Read the switch status
	GPIO_PinWrite(LED,value); // ON/OFF the led as per switch status
	}
	}

view raw pic16f877a_SwitchLed.c hosted with ❤ by GitHub

Demo