contiki/platform/wismote/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
*/
#include "dev/acc-sensor.h"
const struct sensors_sensor acc_sensor;
static uint8_t active;
/*---------------------------------------------------------------------------*/
static void
activate(void)
{
/* This assumes that some other sensor system already did setup the ADC
* (in the case of the sky platform it is sensors_light_init that does it) */
#if 0
P6SEL |= 0x70;
P6DIR = 0x00;
P6OUT = 0x00;
P2DIR |= 0x48;
P2OUT |= 0x48;
/* stop converting immediately */
ADC12CTL0 &= ~ENC;
ADC12CTL1 &= ~CONSEQ_3;
/* Configure ADC12_2 to sample channel 11 (voltage) and use
* the Vref+ as reference (SREF_1) since it is a stable reference */
ADC12MCTL2 = (INCH_4 + SREF_1);
ADC12MCTL3 = (INCH_5 + SREF_1);
ADC12MCTL4 = (INCH_6 + SREF_1);
/* internal temperature can be read as value(3) */
ADC12MCTL5 = (INCH_10 + SREF_1);
ADC12CTL1 |= CONSEQ_3;
ADC12CTL0 |= ENC | ADC12SC;
Irq_adc12_activate(&acc_sensor, 6, (INCH_11 + SREF_1));
#endif /* 0 */
active = 1;
}
/*---------------------------------------------------------------------------*/
static void
deactivate(void)
{
#if 0
irq_adc12_deactivate(&acc_sensor, 6);
acc_value = 0;
#endif /* 0 */
active = 0;
}
/*---------------------------------------------------------------------------*/
static int
value(int type)
{
#if 0
switch(type) {
case 0:
return ADC12MEM2;
case 1:
return ADC12MEM3;
case 2:
return ADC12MEM4;
case 3:
return ADC12MEM5;
}
#endif /* 0 */
return 0;
}
/*---------------------------------------------------------------------------*/
static int
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configure(int type, int value)
{
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if(type == SENSORS_ACTIVE) {
if(value) {
activate();
} else {
deactivate();
}
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return 1;
}
return 0;
}
/*---------------------------------------------------------------------------*/
static int
status(int type)
{
switch (type) {
case SENSORS_ACTIVE:
case SENSORS_READY:
return active;
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default:
return 0;
}
}
/*---------------------------------------------------------------------------*/
SENSORS_SENSOR(acc_sensor, ACC_SENSOR, value, configure, status);