144 lines
4.6 KiB
C
144 lines
4.6 KiB
C
/*
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* Copyright (c) 2014, Texas Instruments Incorporated - http://www.ti.com/
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*---------------------------------------------------------------------------*/
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/**
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* \addtogroup cc26xx-batmon
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* @{
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*
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* \file
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* Driver for the CC26xx AON battery monitor
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*/
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/*---------------------------------------------------------------------------*/
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#include "contiki-conf.h"
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#include "lib/sensors.h"
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#include "batmon-sensor.h"
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#include "ti-lib.h"
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#include <stdint.h>
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#include <stdio.h>
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/*---------------------------------------------------------------------------*/
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#define DEBUG 0
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#if DEBUG
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#define PRINTF(...) printf(__VA_ARGS__)
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#else
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#define PRINTF(...)
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#endif
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/*---------------------------------------------------------------------------*/
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#define SENSOR_STATUS_DISABLED 0
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#define SENSOR_STATUS_ENABLED 1
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static int enabled = SENSOR_STATUS_DISABLED;
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Returns a reading from the sensor
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* \param type BATMON_SENSOR_TYPE_TEMP or BATMON_SENSOR_TYPE_VOLT
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*
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* \return The raw sensor reading, not converted to human-readable form
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*/
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static int
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value(int type)
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{
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uint32_t tmp_value;
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if(enabled == SENSOR_STATUS_DISABLED) {
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PRINTF("Sensor Disabled\n");
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return 0;
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}
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if(type == BATMON_SENSOR_TYPE_TEMP) {
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tmp_value = ti_lib_aon_batmon_temperature_get();
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} else if(type == BATMON_SENSOR_TYPE_VOLT) {
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tmp_value = ti_lib_aon_batmon_battery_voltage_get();
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} else {
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PRINTF("Invalid type\n");
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return 0;
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}
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return (int)tmp_value;
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}
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Configuration function for the battery monitor sensor.
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*
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* \param type Activate, enable or disable the sensor. See below
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* \param enable If
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*
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* When type == SENSORS_HW_INIT we turn on the hardware
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* When type == SENSORS_ACTIVE and enable==1 we enable the sensor
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* When type == SENSORS_ACTIVE and enable==0 we disable the sensor
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*/
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static int
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configure(int type, int enable)
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{
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switch(type) {
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case SENSORS_HW_INIT:
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ti_lib_aon_batmon_enable();
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ti_lib_aon_batmon_measurement_cycle_set(AON_BATMON_CYCLE_32);
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enabled = SENSOR_STATUS_ENABLED;
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break;
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case SENSORS_ACTIVE:
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if(enable) {
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ti_lib_aon_batmon_enable();
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enabled = SENSOR_STATUS_ENABLED;
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} else {
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ti_lib_aon_batmon_disable();
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enabled = SENSOR_STATUS_DISABLED;
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}
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break;
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default:
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break;
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}
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return enabled;
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}
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Returns the status of the sensor
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* \param type SENSORS_ACTIVE or SENSORS_READY
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* \return 1 if the sensor is enabled
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*/
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static int
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status(int type)
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{
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switch(type) {
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case SENSORS_ACTIVE:
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case SENSORS_READY:
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return enabled;
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break;
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default:
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break;
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}
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return SENSOR_STATUS_DISABLED;
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}
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/*---------------------------------------------------------------------------*/
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SENSORS_SENSOR(batmon_sensor, "Battery Monitor", value, configure, status);
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/*---------------------------------------------------------------------------*/
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/** @} */
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