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Re-work the CC2538 driver to be a driver for the Srf06 ALS only

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George Oikonomou 2015-02-11 18:06:05 +01:00 • committed by George Oikonomou
parent 06b0ee4a8b
commit 3717522680
4 changed files with 22 additions and 42 deletions
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platform/cc2538dk/dev/als-sensor.c Normal file
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/*
* Copyright (c) 2013, ADVANSEE - http://www.advansee.com/
* Benoît Thébaudeau <benoit.thebaudeau@advansee.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 cc2538dk-als-sensor
* @{
*
* \file
* Driver for the SmartRF06EB ALS
*/
#include "contiki.h"
#include "sys/clock.h"
#include "dev/ioc.h"
#include "dev/gpio.h"
#include "dev/adc.h"
#include "dev/als-sensor.h"
#include <stdint.h>
#define ADC_ALS_PWR_PORT_BASE GPIO_PORT_TO_BASE(ADC_ALS_PWR_PORT)
#define ADC_ALS_PWR_PIN_MASK GPIO_PIN_MASK(ADC_ALS_PWR_PIN)
#define ADC_ALS_OUT_PIN_MASK GPIO_PIN_MASK(ADC_ALS_OUT_PIN)
/*---------------------------------------------------------------------------*/
static int
value(int type)
{
uint8_t channel = SOC_ADC_ADCCON_CH_AIN0 + ADC_ALS_OUT_PIN;
int16_t res;
GPIO_SET_PIN(ADC_ALS_PWR_PORT_BASE, ADC_ALS_PWR_PIN_MASK);
clock_delay_usec(2000);
res = adc_get(channel, SOC_ADC_ADCCON_REF_INT, SOC_ADC_ADCCON_DIV_512);
GPIO_CLR_PIN(ADC_ALS_PWR_PORT_BASE, ADC_ALS_PWR_PIN_MASK);
return res;
}
/*---------------------------------------------------------------------------*/
static int
configure(int type, int value)
{
switch(type) {
case SENSORS_HW_INIT:
GPIO_SOFTWARE_CONTROL(ADC_ALS_PWR_PORT_BASE, ADC_ALS_PWR_PIN_MASK);
GPIO_SET_OUTPUT(ADC_ALS_PWR_PORT_BASE, ADC_ALS_PWR_PIN_MASK);
GPIO_CLR_PIN(ADC_ALS_PWR_PORT_BASE, ADC_ALS_PWR_PIN_MASK);
ioc_set_over(ADC_ALS_PWR_PORT, ADC_ALS_PWR_PIN, IOC_OVERRIDE_DIS);
GPIO_SOFTWARE_CONTROL(GPIO_A_BASE, ADC_ALS_OUT_PIN_MASK);
GPIO_SET_INPUT(GPIO_A_BASE, ADC_ALS_OUT_PIN_MASK);
ioc_set_over(GPIO_A_NUM, ADC_ALS_OUT_PIN, IOC_OVERRIDE_ANA);
adc_init();
break;
}
return 0;
}
/*---------------------------------------------------------------------------*/
static int
status(int type)
{
return 1;
}
/*---------------------------------------------------------------------------*/
SENSORS_SENSOR(als_sensor, ALS_SENSOR, value, configure, status);
/** @} */