116 lines
3.7 KiB
C
116 lines
3.7 KiB
C
/*
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* Copyright (c) 2018, Texas Instruments Incorporated - http://www.ti.com/
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \addtogroup srf06-peripherals
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* @{
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*
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* \file
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* Driver for the SmartRF06 EB ALS sensor.
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* \author
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* Edvard Pettersen <e.pettersen@ti.com>
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*/
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/*---------------------------------------------------------------------------*/
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#include "contiki.h"
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#include "dev/gpio-hal.h"
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#include "lib/sensors.h"
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#include "sys/timer.h"
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#include "als-sensor.h"
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/*---------------------------------------------------------------------------*/
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#include <Board.h>
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#include <ti/drivers/ADC.h>
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/*---------------------------------------------------------------------------*/
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#include <stdint.h>
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/*---------------------------------------------------------------------------*/
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static ADC_Handle adc_handle;
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/*---------------------------------------------------------------------------*/
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static int
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init(void)
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{
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ADC_Params adc_params;
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ADC_Params_init(&adc_params);
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adc_handle = ADC_open(Board_ADCALS, &adc_params);
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if(adc_handle == NULL) {
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return 0;
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}
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return 1;
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}
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/*---------------------------------------------------------------------------*/
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static int
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config(int type, int enable)
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{
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switch(type) {
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case SENSORS_HW_INIT:
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return init();
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case SENSORS_ACTIVE:
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gpio_hal_arch_pin_set_output(Board_ALS_PWR);
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gpio_hal_arch_pin_set_input(Board_ALS_OUT);
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if(enable) {
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gpio_hal_arch_set_pin(Board_ALS_PWR);
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clock_delay_usec(2000);
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} else {
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gpio_hal_arch_clear_pin(Board_ALS_PWR);
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}
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break;
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default:
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break;
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}
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return 1;
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}
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/*---------------------------------------------------------------------------*/
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static int
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value(int type)
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{
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uint16_t adc_value = 0;
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int_fast16_t res = ADC_convert(adc_handle, &adc_value);
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if(res != ADC_STATUS_SUCCESS) {
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return -1;
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}
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return (int)adc_value;
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}
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/*---------------------------------------------------------------------------*/
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static int
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status(int type)
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{
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return 1;
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}
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/*---------------------------------------------------------------------------*/
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SENSORS_SENSOR(als_sensor, ALS_SENSOR, value, config, status);
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/*---------------------------------------------------------------------------*/
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/** @} */
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