osd-contiki/platform/stm32nucleo-spirit1/dev/magneto-sensor.c

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/*
* Copyright (c) 2012, STMicroelectronics.
* 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 Institute 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 INSTITUTE 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 INSTITUTE 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-magneto-sensor
* @{
*
* \file
* Driver for the stm32nucleo-spirit1 Magneto sensor (on expansion board)
*/
/*---------------------------------------------------------------------------*/
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#if COMPILE_SENSORS
/*---------------------------------------------------------------------------*/
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#include "lib/sensors.h"
#include "magneto-sensor.h"
#include "st-lib.h"
/*---------------------------------------------------------------------------*/
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static int _active = 1;
/*---------------------------------------------------------------------------*/
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static void
init(void)
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{
BSP_MAGNETO_Init();
_active = 1;
}
/*---------------------------------------------------------------------------*/
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static void
activate(void)
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{
_active = 1;
}
/*---------------------------------------------------------------------------*/
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static void
deactivate(void)
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{
_active = 0;
}
/*---------------------------------------------------------------------------*/
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static int
active(void)
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{
return _active;
}
/*---------------------------------------------------------------------------*/
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static int
value(int type)
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{
int32_t ret_val = 0;
volatile st_lib_axes_raw_typedef axes_raw_data;
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/* NOTE: this is a demo of mapping ST Nucleo sensors on Contiki sensor API.
* For a real use case of sensors like acceleration, magneto and gyroscope,
* it is better to directly call the ST lib to get the three value (X/Y/Z)
* at once.
*/
st_lib_bsp_magneto_m_get_axes_raw(&axes_raw_data);
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switch(type) {
case X_AXIS:
ret_val = axes_raw_data.AXIS_X;
break;
case Y_AXIS:
ret_val = axes_raw_data.AXIS_Y;
break;
case Z_AXIS:
ret_val = axes_raw_data.AXIS_Z;
break;
default:
break;
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}
return ret_val;
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}
/*---------------------------------------------------------------------------*/
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static int
configure(int type, int value)
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{
switch(type) {
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case SENSORS_HW_INIT:
init();
return 1;
case SENSORS_ACTIVE:
if(value) {
activate();
} else {
deactivate();
}
return 1;
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}
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return 0;
}
/*---------------------------------------------------------------------------*/
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static int
status(int type)
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{
switch(type) {
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case SENSORS_READY:
return active();
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}
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return 0;
}
/*---------------------------------------------------------------------------*/
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SENSORS_SENSOR(magneto_sensor, MAGNETO_SENSOR, value, configure, status);
/*---------------------------------------------------------------------------*/
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#endif /*COMPILE_SENSORS*/
/*---------------------------------------------------------------------------*/
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/** @} */