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99 lines
3.5 KiB
C
99 lines
3.5 KiB
C
/*
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* Copyright (c) 2010, Swedish Institute of Computer Science.
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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 Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR 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, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: acc-sensor.c,v 1.2 2010/08/25 19:34:42 nifi Exp $
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*
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* -----------------------------------------------------------------
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*
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* Author : Adam Dunkels, Joakim Eriksson, Niclas Finne
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* Created : 2005-11-01
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* Updated : $Date: 2010/08/25 19:34:42 $
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* $Revision: 1.2 $
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*/
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#include "dev/acc-sensor.h"
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#include "dev/sky-sensors.h"
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#include <io.h>
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/* Configure ADC12_2 to sample channel 4, 5, 6 and use */
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/* the Vref+ as reference (SREF_1) since it is a stable reference */
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#define INPUT_CHANNEL ((1 << INCH_4) | (1 << INCH_5) | (1 << INCH_6))
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#define INPUT_REFERENCE SREF_1
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#define ACC_MEM_X ADC12MEM4 /* Xout */
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#define ACC_MEM_Y ADC12MEM5 /* Yout */
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#define ACC_MEM_Z ADC12MEM6 /* Zout */
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const struct sensors_sensor acc_sensor;
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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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switch(type) {
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case ACC_SENSOR_X:
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return ACC_MEM_X;
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case ACC_SENSOR_Y:
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return ACC_MEM_Y;
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case ACC_SENSOR_Z:
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return ACC_MEM_Z;
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}
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return 0;
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}
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/*---------------------------------------------------------------------------*/
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static int
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configure(int type, int c)
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{
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if(type == SENSORS_ACTIVE) {
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/* Sleep Mode P2.3 */
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if(c) {
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P2OUT |= 0x08;
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P2DIR |= 0x08;
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} else {
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/* Sensor deactivated. Changed to sleep mode. */
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P2OUT &= ~0x08;
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}
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} else if(type == ACC_SENSOR_SENSITIVITY) {
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/* g-Select1 P2.0, g-Select2 P2.1 */
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P2DIR |= 0x03;
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P2OUT &= ~0x03;
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P2OUT |= c & 0x03;
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}
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return sky_sensors_configure(INPUT_CHANNEL, INPUT_REFERENCE, type, c);
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}
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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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if(type == ACC_SENSOR_SENSITIVITY) {
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return (P2OUT & P2DIR) & 0x03;
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}
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return sky_sensors_status(INPUT_CHANNEL, type);
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}
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/*---------------------------------------------------------------------------*/
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SENSORS_SENSOR(acc_sensor, ACC_SENSOR, value, configure, status);
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