nes-proj/arch/platform/simplelink/cc13xx-cc26xx/srf06/als-sensor.c

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