contiki/platform/stm32nucleo-spirit1/dev/humidity-sensor.c

121 lines
4.3 KiB
C
Raw Normal View History

2015-07-24 14:30:10 +00:00
/**
******************************************************************************
* @file humidity-sensor.c
* @author System LAB
* @version V1.0.0
* @date 17-June-2015
* @brief Enable humidity sensor functionality
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
*
* 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 STMicroelectronics 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 stm32nucleo-spirit1-humidity-sensor
* @{
*
* \file
* Driver for the stm32nucleo-spirit1 Humidity sensor (on expansion board)
*/
/*---------------------------------------------------------------------------*/
2015-07-24 14:30:10 +00:00
#if COMPILE_SENSORS
/*---------------------------------------------------------------------------*/
2015-07-24 14:30:10 +00:00
#include "lib/sensors.h"
#include "humidity-sensor.h"
#include "st-lib.h"
/*---------------------------------------------------------------------------*/
2015-07-24 14:30:10 +00:00
static int _active = 1;
/*---------------------------------------------------------------------------*/
2015-07-24 14:30:10 +00:00
static void init(void)
{
/*Temperature and Humity sensors share the same hw*/
if (!st_lib_bsp_hum_temp_is_initialized()) {
st_lib_bsp_hum_temp_init();
_active=1;
2015-07-24 14:30:10 +00:00
}
}
/*---------------------------------------------------------------------------*/
2015-07-24 14:30:10 +00:00
static void activate(void)
{
_active = 1;
}
/*---------------------------------------------------------------------------*/
2015-07-24 14:30:10 +00:00
static void deactivate(void)
{
_active = 0;
}
/*---------------------------------------------------------------------------*/
2015-07-24 14:30:10 +00:00
static int active(void)
{
return _active;
}
/*---------------------------------------------------------------------------*/
2015-07-24 14:30:10 +00:00
static int value(int type)
{
uint32_t humidity;
volatile float humidity_value;
2015-07-24 14:30:10 +00:00
st_lib_bsp_hum_temp_get_humidity((float *)&humidity_value);
2015-07-24 14:30:10 +00:00
humidity = humidity_value * 10;
return humidity;
2015-07-24 14:30:10 +00:00
}
/*---------------------------------------------------------------------------*/
2015-07-24 14:30:10 +00:00
static int configure(int type, int value)
{
switch(type) {
case SENSORS_HW_INIT:
init();
return 1;
case SENSORS_ACTIVE:
if(value) {
activate();
} else {
deactivate();
}
return 1;
2015-07-24 14:30:10 +00:00
}
2015-07-24 14:30:10 +00:00
return 0;
}
/*---------------------------------------------------------------------------*/
2015-07-24 14:30:10 +00:00
static int status(int type)
{
switch(type) {
case SENSORS_READY:
return active();
2015-07-24 14:30:10 +00:00
}
return 0;
}
/*---------------------------------------------------------------------------*/
2015-07-24 14:30:10 +00:00
SENSORS_SENSOR(humidity_sensor, HUMIDITY_SENSOR, value, configure, status);
/*---------------------------------------------------------------------------*/
2015-07-24 14:30:10 +00:00
#endif /*COMPILE_SENSORS*/
/*---------------------------------------------------------------------------*/
2015-07-24 14:30:10 +00:00
/** @} */