/*********************************************************************************
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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.c
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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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#include "hal.h"
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/* LED_R LED_G LED_B */
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static int led_pin[LED_MAX] = { 0,0,0 };
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static int relay_pin = 0;
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static int beep_pin = 0;
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static int infrared_pin = 0;
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void init_relay(int pin);
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void init_led(int redpin, int greenpin, int bluepin);
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void init_beep(int pin);
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int hal_init(hwconf_t *hwconf)
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{
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if( !hwconf->enable )
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{
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log_err("All hardware modules are disabled, skip initialise HAL.\n");
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return 0;
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}
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wiringPiSetup();
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if( hwconf->leds )
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init_led(hwconf->red_pin, hwconf->green_pin, hwconf->blue_pin);
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if( hwconf->relay_pin )
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init_relay(hwconf->relay_pin);
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if( hwconf->beep_pin )
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init_beep(hwconf->beep_pin);
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if( hwconf->infrared_pin )
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init_infrared(hwconf->infrared_pin);
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if( hwconf->sht2x && sht2x_init() < 0 )
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{
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log_err("Initialise SHT20 T&H sensor failure\n");
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return -1;
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}
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if( hwconf->lux && tsl2561_init() < 0 )
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{
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log_err("Initialise TSL2561 Lux sensor failure\n");
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return -1;
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}
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return 0;
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}
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void init_led(int redpin, int greenpin, int bluepin)
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{
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int i;
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led_pin[LED_R]=redpin;
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led_pin[LED_G]=greenpin;
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led_pin[LED_B]=bluepin;
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for(i=0; i<LED_MAX; i++)
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{
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if(led_pin[i])
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pinMode(led_pin[i], OUTPUT );
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}
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}
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int turn_led(int which, int cmd)
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{
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if( which<0 || which>=LED_MAX )
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return -1;
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if( OFF == cmd )
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{
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if(led_pin[which])
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digitalWrite (led_pin[which], LOW);
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}
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else
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{
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if(led_pin[which])
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digitalWrite (led_pin[which], HIGH);
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}
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return 0;
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}
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void init_relay(int pin)
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{
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relay_pin = pin;
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pinMode(relay_pin, OUTPUT);
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}
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void init_beep(int pin)
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{
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beep_pin = pin;
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/* TBD */
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//pinMode(relay_pin, OUTPUT);
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}
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void turn_beep(int times)
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{
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/* TBD */
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}
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/* wiringPi IRQ handler use a thread and can not pass argument, so we don't use interrupt */
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void init_infrared(int pin)
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{
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infrared_pin = pin;
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pinMode(pin, INPUT);
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}
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/* jitter_time: cancel jitter interval time
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* Return value: 1(HIGH): Sombody detected 0(LOW): Nobody detected */
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int infrared_detect(int jitter_time)
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{
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if( digitalRead(infrared_pin) )
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{
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msleep(jitter_time);
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}
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return digitalRead(infrared_pin);
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}
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void turn_relay(int cmd)
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{
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if( OFF == cmd )
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{
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digitalWrite ( relay_pin, LOW );
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}
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else
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{
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digitalWrite ( relay_pin, HIGH );
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}
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}
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