gistfile1.txt

//File: gpio_test.c
#include "gpio_test.h"
int gpio_init(void)
{
    if (!bcm2835_init())
	return 1;
    // Set the pin to be an output
    bcm2835_gpio_fsel(RPI_GPIO_P1_11, BCM2835_GPIO_FSEL_OUTP);
    bcm2835_gpio_fsel(PIN12, BCM2835_GPIO_FSEL_INPT);// Input pin
   	return 0;
}

void gpio_close(void)
{
    bcm2835_close();
}

// Blinks on RPi Plug P1 pin 11 (which is GPIO pin 17)
void gpio_blink(void)
{
    // Blink
	// Turn it on
	static uint32_t test_local = 0;//When static it will initialized one time and then count up
	test_local++;
	uint8_t read_lev;
	bcm2835_gpio_write(PIN, HIGH);
	printf("Pin 11 is now High test_local %d\n",test_local);
	read_lev = bcm2835_gpio_lev(PIN12);
	printf("Read GPIO pin level: %d\n",read_lev);

	
	// wait a bit
	bcm2835_delay(500);
	
	// turn it off
	bcm2835_gpio_write(PIN, LOW);
	printf("Pin 11 is now Low \n");
	read_lev = bcm2835_gpio_lev(PIN12);
	printf("Read GPIO pin level: %d\n",read_lev);
	
	// wait a bit
	bcm2835_delay(500);
    
}