osd-contiki/platform/jcreate/dev/acc-sensor.c

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/*
* Copyright (c) 2010, Swedish Institute of Computer Science.
* 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.
*
*
* -----------------------------------------------------------------
*
* Author : Adam Dunkels, Joakim Eriksson, Niclas Finne
* Created : 2005-11-01
* Updated : $Date: 2010/08/25 19:34:42 $
* $Revision: 1.2 $
*/
#include "contiki.h"
#include "dev/acc-sensor.h"
#include "dev/sky-sensors.h"
/* Configure ADC12_2 to sample channel 4, 5, 6 and use */
/* the Vref+ as reference (SREF_1) since it is a stable reference */
#define INPUT_CHANNEL ((1 << INCH_4) | (1 << INCH_5) | (1 << INCH_6))
#define INPUT_REFERENCE SREF_1
#define ACC_MEM_X ADC12MEM4 /* Xout */
#define ACC_MEM_Y ADC12MEM5 /* Yout */
#define ACC_MEM_Z ADC12MEM6 /* Zout */
const struct sensors_sensor acc_sensor;
/*---------------------------------------------------------------------------*/
static int
value(int type)
{
switch(type) {
case ACC_SENSOR_X:
return ACC_MEM_X;
case ACC_SENSOR_Y:
return ACC_MEM_Y;
case ACC_SENSOR_Z:
return ACC_MEM_Z;
}
return 0;
}
/*---------------------------------------------------------------------------*/
static int
configure(int type, int c)
{
if(type == SENSORS_ACTIVE) {
/* Sleep Mode P2.3 */
if(c) {
P2OUT |= 0x08;
P2DIR |= 0x08;
} else {
/* Sensor deactivated. Changed to sleep mode. */
P2OUT &= ~0x08;
}
} else if(type == ACC_SENSOR_SENSITIVITY) {
/* g-Select1 P2.0, g-Select2 P2.1 */
P2DIR |= 0x03;
P2OUT &= ~0x03;
P2OUT |= c & 0x03;
}
return sky_sensors_configure(INPUT_CHANNEL, INPUT_REFERENCE, type, c);
}
/*---------------------------------------------------------------------------*/
static int
status(int type)
{
if(type == ACC_SENSOR_SENSITIVITY) {
return (P2OUT & P2DIR) & 0x03;
}
return sky_sensors_status(INPUT_CHANNEL, type);
}
/*---------------------------------------------------------------------------*/
SENSORS_SENSOR(acc_sensor, ACC_SENSOR, value, configure, status);