131 lines
3.8 KiB
C
131 lines
3.8 KiB
C
/*
|
|
* 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
|
|
configure(int type, int value)
|
|
{
|
|
if(type == SENSORS_ACTIVE) {
|
|
if(value) {
|
|
activate();
|
|
} else {
|
|
deactivate();
|
|
}
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
status(int type)
|
|
{
|
|
switch (type) {
|
|
case SENSORS_ACTIVE:
|
|
case SENSORS_READY:
|
|
return active;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
SENSORS_SENSOR(acc_sensor, ACC_SENSOR,
|
|
value, configure, status);
|