/*********************************************************************************
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* Copyright: (C) 2019 LingYun IoT System Studio
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* All rights reserved.
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*
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* Filename: gpio.h
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* Description: This file is GPIO input/output functions
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*
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* Version: 1.0.0(2019年06月24日)
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* Author: Guo Wenxue <guowenxue@gmail.com>
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* ChangeLog: 1, Release initial version on "2019年06月24日 23时46分47秒"
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*
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********************************************************************************/
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#ifndef _GPIO_H_
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#define _GPIO_H_
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#include <gpiod.h>
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#define OFF 0
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#define ON 1
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#define GPIO_MAXOUT 8
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#define GPIO_MAXIN 4
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typedef struct gpio_info_s
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{
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char name[32]; /* GPIO connected module name */
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int pin; /* GPIO BCM pin number */
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int active_level; /* active power level */
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struct gpiod_line *line; /* gpiod line */
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} gpio_info_t;
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typedef struct gpio_s
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{
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gpio_info_t output[GPIO_MAXOUT]; /* GPIO output pins */
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int outcnt; /* GPIO output numbers */
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int light_intval; /* light on interval time */
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gpio_info_t input[GPIO_MAXIN]; /* GPIO input pins */
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int incnt; /* GPIO input numbers */
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} gpio_t;
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extern int gpio_init(gpio_t *gpio);
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extern void gpio_term(void);
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/* turn which light on/off */
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extern void turn_light(int which, int cmd);
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/* turn which led on/off */
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extern void turn_led(int which, int cmd);
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/* Return value: 0(LOW): Nobody detected, !0: Which infrared detect incoming */
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extern int infrared_detect(void);
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#endif /* ----- #ifndef _GPIO_H_ ----- */
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