/*********************************************************************************
 *      Copyright:  (C) 2018 LingYun IoT System Studio
 *                  All rights reserved.
 *
 *       Filename:  led.c
 *    Description:  This file is used to control RGB 3-colours LED
 *
 *     pi@raspberrypi:~ $ gpio readall show BCM and wPi pinmap  
 *
 *                 LED      BCM           wPi           Phy Pin
 *                  G ---- GPIO.13  ---- GPIO.23  ----   #Pin33
 *                  R ---- GPIO.19  ---- GPIO.24  ----   #Pin35  
 *                  B ---- GPIO.26  ---- GPIO.25  ----   #Pin37
 *                  I ---- GND      ----
 *                 
 *        Version:  1.0.0(2018/10/14)
 *         Author:  Guo Wenxue <guowenxue@gmail.com>
 *      ChangeLog:  1, Release initial version on "2018/10/14 12:13:26"
 *                 
 ********************************************************************************/

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <dirent.h>
#include <string.h>
#include <time.h>
#include <errno.h>

#include <wiringPi.h>
#include "led.h"

void init_led(void)
{
	int         i; 
    
	for(i=0; i<LED_MAX; i++)
	{
        pinMode( led_gpio[i], OUTPUT );
	}
}

int turn_led(int which, int cmd)
{
	if( which<0 || which>=LED_MAX )
		return -1;

	if( OFF == cmd )
        digitalWrite (led_gpio[which], LOW); 
    else 
        digitalWrite (led_gpio[which], HIGH);

	return 0;
}