/*********************************************************************************
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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: hal.h
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* Description: This file is HAL(Hardware Abstract Layer) initial 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 _HAL_H_
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#define _HAL_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 RELAY_ACTVLEVEL 0
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#define RELAY_INACTVLEVEL 1
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/* Three Lights code */
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enum
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{
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LIGHT1 = 0,
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LIGHT_HALLWAY = LIGHT1, /* Hallway light with infrared and lux support */
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LIGHT2,
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LIGHT_LVROOM_LEFT = LIGHT2, /* living room left light control by MQTT */
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LIGHT3,
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LIGHT_LVROOM_RIGHT= LIGHT3, /* living room right light control by MQTT */
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LIGHT_MAX = 4,
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};
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typedef struct hal_ctx_s
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{
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int infrared_pin;
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float lux_threshold;
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int light_cnt;
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int light_pins[LIGHT_MAX]; /* max support lights */
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int light_intval; /* lights on interval */
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} hal_ctx_t;
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/* init hardware */
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extern int hal_init(hal_ctx_t *ctx);
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/* terminal hardware */
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extern void hal_term(hal_ctx_t *ctx);
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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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/* Return value: 1(HIGH): Sombody detected 0(LOW): Nobody detected */
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extern int infrared_detect(void);
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#endif /* ----- #ifndef _HAL_H_ ----- */
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