contiki/platform/zoul/dev/adc-zoul.h
2016-04-04 10:48:43 +02:00

159 lines
5.9 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 zoul-sensors
* @{
*
* \defgroup zoul-adc-interface Zoul Generic ADC interface
*
* Driver for the Zoul ADC interface
*
* This driver supports analogue sensors connected to ADC1, ADC2, ADC3,
* ADC4, ADC5 and ADC6 inputs. ADC6 is shared with the user button, so disable
* user button if ADC6 is needed.
* This is controlled by the type argument of the value() function. Possible
* choices are:
*
* - ZOUL_SENSORS_ADC1
* - ZOUL_SENSORS_ADC2
* - ZOUL_SENSORS_ADC3
* - ZOUL_SENSORS_ADC4
* - ZOUL_SENSORS_ADC5
* - ZOUL_SENSORS_ADC6
*
* To initialize the ADC sensors use the configure() function, using as first
* argument SENSORS_HW_INIT, and choose which ADC channels to enable passing as
* second argument any single or combined (sum) values as below:
*
* - Either use multiple values (i.e ZOUL_SENSORS_ADC1 + ZOUL_SENSORS_ADC2)
* - ZOUL_SENSORS_ADC_ALL (all channels above)
*
* Using an invalid combination will return ZOUL_SENSORS_ERROR.
*
* The decimation rate can be set by passing
* ZOUL_SENSORS_CONFIGURE_TYPE_DECIMATION_RATE as the type argument to the
* configure() function and then specifying the rate through the value
* argument. Valid values are:
*
* - SOC_ADC_ADCCON_DIV_64 (64 bit rate)
* - SOC_ADC_ADCCON_DIV_128 (128 bit rate)
* - SOC_ADC_ADCCON_DIV_256 (256 bit rate)
* - SOC_ADC_ADCCON_DIV_512 (512 bit rate)
* @{
*
* \file
* Header file for the Zoul ADC interface
*/
/*---------------------------------------------------------------------------*/
#ifndef ADC_ZOUL_H_
#define ADC_ZOUL_H_
/*---------------------------------------------------------------------------*/
#include "lib/sensors.h"
#include "dev/soc-adc.h"
/*---------------------------------------------------------------------------*/
/**
* \name Generic ADC sensors
* @{
*/
#define ADC_ZOUL "ADC sensor interface"
#define ADC_SENSORS_PORT_BASE GPIO_PORT_TO_BASE(ADC_SENSORS_PORT)
#ifdef ADC_SENSORS_CONF_REFERENCE
#define ADC_SENSORS_REFERENCE ADC_SENSORS_CONF_REFERENCE
#else
#define ADC_SENSORS_REFERENCE SOC_ADC_ADCCON_REF_AVDD5
#endif
/*
* PA0-PA3 are hardcoded to UART0 and the user button for most Zolertia
* platforms, the following assumes PA0-1 shall not be used as ADC input, else
* re-write the below definitions
*/
#define ZOUL_SENSORS_ADC_MIN 2 /**< PA1 pin mask */
/* ADC phidget-like connector ADC1 */
#if ADC_SENSORS_ADC1_PIN >= ZOUL_SENSORS_ADC_MIN
#define ZOUL_SENSORS_ADC1 GPIO_PIN_MASK(ADC_SENSORS_ADC1_PIN)
#else
#define ZOUL_SENSORS_ADC1 0
#endif
/* ADC phidget-like connector ADC2 */
#if ADC_SENSORS_ADC2_PIN >= ZOUL_SENSORS_ADC_MIN
#define ZOUL_SENSORS_ADC2 GPIO_PIN_MASK(ADC_SENSORS_ADC2_PIN)
#else
#define ZOUL_SENSORS_ADC2 0
#endif
/* ADC phidget-like connector ADC3 */
#if ADC_SENSORS_ADC3_PIN >= ZOUL_SENSORS_ADC_MIN
#define ZOUL_SENSORS_ADC3 GPIO_PIN_MASK(ADC_SENSORS_ADC3_PIN)
#else
#define ZOUL_SENSORS_ADC3 0
#endif
/* ADC phidget-like connector ADC4 */
#if ADC_SENSORS_ADC4_PIN >= ZOUL_SENSORS_ADC_MIN
#define ZOUL_SENSORS_ADC4 GPIO_PIN_MASK(ADC_SENSORS_ADC4_PIN)
#else
#define ZOUL_SENSORS_ADC4 0
#endif
/* ADC phidget-like connector ADC5 */
#if ADC_SENSORS_ADC5_PIN >= ZOUL_SENSORS_ADC_MIN
#define ZOUL_SENSORS_ADC5 GPIO_PIN_MASK(ADC_SENSORS_ADC5_PIN)
#else
#define ZOUL_SENSORS_ADC5 0
#endif
/* ADC phidget-like connector ADC6 */
#if ADC_SENSORS_ADC6_PIN >= ZOUL_SENSORS_ADC_MIN
#define ZOUL_SENSORS_ADC6 GPIO_PIN_MASK(ADC_SENSORS_ADC6_PIN)
#else
#define ZOUL_SENSORS_ADC6 0
#endif
/*
* This is safe as the disabled sensors should have a zero value thus not
* affecting the mask operations
*/
#define ZOUL_SENSORS_ADC_ALL (ZOUL_SENSORS_ADC1 + ZOUL_SENSORS_ADC2 + \
ZOUL_SENSORS_ADC3 + ZOUL_SENSORS_ADC4 + \
ZOUL_SENSORS_ADC5 + ZOUL_SENSORS_ADC6)
/** @} */
/*---------------------------------------------------------------------------*/
extern const struct sensors_sensor adc_zoul;
/*---------------------------------------------------------------------------*/
#endif /* ADC_ZOUL_H_ */
/*---------------------------------------------------------------------------*/
/**
* @}
* @}
*/