/*********************************************************************************
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* Copyright: (C) 2018 LingYun IoT System Studio
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* All rights reserved.
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*
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* Filename: led.h
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* Description: This file is used to control RGB 3-colours LED
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*
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* pi@raspberrypi:~ $ gpio readall #show BCM and wPi pinmap
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*
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* LED #PIN BCM wPi
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* I ---- 9 ---- GND ---- GND
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* G ---- 11 ---- 17 ---- 0
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* R ---- 13 ---- 27 ---- 2
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* B ---- 15 ---- 22 ---- 3
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*
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* Version: 1.0.0(2018/10/14)
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* Author: Guo Wenxue <guowenxue@gmail.com>
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* ChangeLog: 1, Release initial version on "2018/10/14 12:13:26"
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*
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********************************************************************************/
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#ifndef __LED_H
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#define __LED_H
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#define OFF 0
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#define ON 1
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/* Three LEDs code */
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enum
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{
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LED_R = 0,
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LED_G,
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LED_B,
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LED_MAX,
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};
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/* 3 LEDs WiringPi GPIO port */
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#ifdef CONFIG_USE_WIRINGPI
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static int led_gpio[LED_MAX]= { 2, 0, 3 };
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#else /* use libgpiod library */
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static int led_gpio[LED_MAX]= { 27, 17, 22 };
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#endif
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void init_led(void);
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int turn_led(int which, int cmd);
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#endif
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