mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-11-07 02:05:33 +00:00
126 lines
4.5 KiB
C
126 lines
4.5 KiB
C
/*
|
|
* Copyright (c) 2015, Zolertia - http://www.zolertia.com
|
|
* Copyright (c) 2015, University of Bristol - http://www.bristol.ac.uk
|
|
* 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 remote-phidget-sensor
|
|
* @{
|
|
*
|
|
* \file
|
|
* Generic driver for the Re-Mote Phidget/ADC sensors
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
#include "contiki.h"
|
|
#include "sys/clock.h"
|
|
#include "dev/ioc.h"
|
|
#include "dev/gpio.h"
|
|
#include "dev/adc.h"
|
|
#include "dev/phidget-sensor.h"
|
|
#include "dev/remote-sensors.h"
|
|
|
|
#include <stdint.h>
|
|
/*---------------------------------------------------------------------------*/
|
|
#define ADC_PHIDGET_PORT_BASE GPIO_PORT_TO_BASE(ADC_PHIDGET_PORT)
|
|
#define ADC_PHIDGET_ADC2_PIN_MASK GPIO_PIN_MASK(ADC_PHIDGET_ADC2_PIN)
|
|
#define ADC_PHIDGET_ADC3_PIN_MASK GPIO_PIN_MASK(ADC_PHIDGET_ADC3_PIN)
|
|
/*---------------------------------------------------------------------------*/
|
|
static uint8_t decimation_rate;
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
set_decimation_rate(uint8_t rate)
|
|
{
|
|
switch(rate) {
|
|
case SOC_ADC_ADCCON_DIV_64:
|
|
case SOC_ADC_ADCCON_DIV_128:
|
|
case SOC_ADC_ADCCON_DIV_256:
|
|
case SOC_ADC_ADCCON_DIV_512:
|
|
decimation_rate = rate;
|
|
break;
|
|
default:
|
|
return REMOTE_SENSORS_ERROR;
|
|
}
|
|
|
|
return decimation_rate;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
value(int type)
|
|
{
|
|
uint8_t channel;
|
|
int16_t res;
|
|
|
|
switch(type) {
|
|
case PHIDGET_SENSORS_ADC2:
|
|
channel = SOC_ADC_ADCCON_CH_AIN0 + ADC_PHIDGET_ADC2_PIN;
|
|
break;
|
|
case PHIDGET_SENSORS_ADC3:
|
|
channel = SOC_ADC_ADCCON_CH_AIN0 + ADC_PHIDGET_ADC3_PIN;
|
|
break;
|
|
default:
|
|
return REMOTE_SENSORS_ERROR;
|
|
}
|
|
|
|
res = adc_get(channel, SOC_ADC_ADCCON_REF_INT, decimation_rate);
|
|
|
|
return res;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
configure(int type, int value)
|
|
{
|
|
switch(type) {
|
|
case SENSORS_HW_INIT:
|
|
GPIO_SOFTWARE_CONTROL(GPIO_A_BASE, ADC_PHIDGET_ADC2_PIN_MASK);
|
|
GPIO_SET_INPUT(GPIO_A_BASE, ADC_PHIDGET_ADC2_PIN_MASK);
|
|
ioc_set_over(GPIO_A_NUM, ADC_PHIDGET_ADC2_PIN, IOC_OVERRIDE_ANA);
|
|
|
|
GPIO_SOFTWARE_CONTROL(GPIO_A_BASE, ADC_PHIDGET_ADC3_PIN_MASK);
|
|
GPIO_SET_INPUT(GPIO_A_BASE, ADC_PHIDGET_ADC3_PIN_MASK);
|
|
ioc_set_over(GPIO_A_NUM, ADC_PHIDGET_ADC3_PIN, IOC_OVERRIDE_ANA);
|
|
adc_init();
|
|
set_decimation_rate(SOC_ADC_ADCCON_DIV_512);
|
|
break;
|
|
case REMOTE_SENSORS_CONFIGURE_TYPE_DECIMATION_RATE:
|
|
return set_decimation_rate((uint8_t)value);
|
|
}
|
|
return 0;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
status(int type)
|
|
{
|
|
return 1;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
SENSORS_SENSOR(phidget_sensor, PHIDGET_SENSOR, value, configure, status);
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @} */
|