contiki/platform/srf06-cc26xx/srf06/als-sensor.c
George Oikonomou 2ec9c8ccf0 Add ALS support for Srf06 + CC13xx/CC26xxEM
This provides an example on how to use the CC13xx / CC26xx ADC
2016-05-29 15:05:13 +01:00

106 lines
3.8 KiB
C

/*
* Copyright (c) 2016, University of Bristol - http://www.bris.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 srf06-common-peripherals
* @{
*
* \file
* Driver for the SmartRF06EB ALS when a CC13xx/CC26xxEM is mounted on it
*/
/*---------------------------------------------------------------------------*/
#include "contiki.h"
#include "lib/sensors.h"
#include "srf06/als-sensor.h"
#include "sys/timer.h"
#include "dev/adc-sensor.h"
#include "dev/aux-ctrl.h"
#include "ti-lib.h"
#include <stdint.h>
/*---------------------------------------------------------------------------*/
static aux_consumer_module_t als_aux = {
.clocks = AUX_WUC_ADI_CLOCK | AUX_WUC_ANAIF_CLOCK | AUX_WUC_SMPH_CLOCK
};
/*---------------------------------------------------------------------------*/
static int
config(int type, int enable)
{
switch(type) {
case SENSORS_HW_INIT:
ti_lib_ioc_pin_type_gpio_output(BOARD_IOID_ALS_PWR);
break;
case SENSORS_ACTIVE:
ti_lib_ioc_pin_type_gpio_output(BOARD_IOID_ALS_PWR);
ti_lib_ioc_port_configure_set(BOARD_IOID_ALS_OUT, IOC_PORT_GPIO,
IOC_STD_OUTPUT);
ti_lib_gpio_dir_mode_set(BOARD_ALS_OUT, GPIO_DIR_MODE_IN);
if(enable) {
ti_lib_gpio_pin_write(BOARD_ALS_PWR, 1);
aux_ctrl_register_consumer(&als_aux);
ti_lib_aux_adc_select_input(ADC_COMPB_IN_AUXIO7);
clock_delay_usec(2000);
} else {
ti_lib_gpio_pin_write(BOARD_ALS_PWR, 0);
aux_ctrl_unregister_consumer(&als_aux);
}
break;
default:
break;
}
return 1;
}
/*---------------------------------------------------------------------------*/
static int
value(int type)
{
int val;
ti_lib_aux_adc_enable_sync(AUXADC_REF_VDDS_REL, AUXADC_SAMPLE_TIME_2P7_US,
AUXADC_TRIGGER_MANUAL);
ti_lib_aux_adc_gen_manual_trigger();
val = ti_lib_aux_adc_read_fifo();
ti_lib_aux_adc_disable();
return val;
}
/*---------------------------------------------------------------------------*/
static int
status(int type)
{
return 1;
}
/*---------------------------------------------------------------------------*/
SENSORS_SENSOR(als_sensor, ALS_SENSOR, value, config, status);
/*---------------------------------------------------------------------------*/
/** @} */