contiki/platform/sky/dev/ext-sensor.c
2010-02-13 11:20:48 +00:00

110 lines
3.7 KiB
C

/*
* Copyright (c) 2006, 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.
*
* $Id: ext-sensor.c,v 1.3 2010/02/13 11:20:48 joxe Exp $
*
* -----------------------------------------------------------------
*
* Author : Adam Dunkels, Joakim Eriksson, Niclas Finne, Marcus Lundén,
* Jesper Karlsson
* Created : 2005-11-01
* Updated : $Date: 2010/02/13 11:20:48 $
* $Revision: 1.3 $
*/
#include <io.h>
#include <stdio.h>
#include "contiki.h"
#include "dev/ext-sensor.h"
#include "lib/sensors.h"
#include "sky-sensors.h"
const struct sensors_sensor ext_sensor;
static uint8_t active;
/*---------------------------------------------------------------------------*/
static int
value(int type)
{
/* ADC0 corresponds to the port under the logo, ADC1 to the port over the logo,
ADC2 and ADC3 corresponds to port on the JCreate bottom expansion port) */
switch(type) {
case ADC0:
return ADC12MEM6;
case ADC1:
return ADC12MEM7;
case ADC2:
return ADC12MEM8;
case ADC3:
return ADC12MEM9;
}
return 0;
}
/*---------------------------------------------------------------------------*/
static int
status(int type)
{
switch(type) {
case SENSORS_ACTIVE:
case SENSORS_READY:
return active;
}
return 0;
}
/*---------------------------------------------------------------------------*/
static int
configure(int type, int c)
{
switch(type) {
case SENSORS_ACTIVE:
if(c) {
if(!status(SENSORS_ACTIVE)) {
/* SREF_1 is Vref+ */
/* MemReg6 == P6.0/A0 == port "under" logo */
ADC12MCTL6 = (INCH_0 + SREF_0);
/* MemReg7 == P6.1/A1 == port "over" logo */
ADC12MCTL7 = (INCH_1 + SREF_0);
/* MemReg8 == P6.2/A2, bottom expansion port */
ADC12MCTL8 = (INCH_2 + SREF_0);
/* MemReg9 == P6.1/A3, bottom expansion port, End Of (ADC-)Sequence */
ADC12MCTL9 = (INCH_3 + SREF_0);
sky_sensors_activate(0x0F);
active = 1;
}
} else {
sky_sensors_deactivate(0x0F);
active = 0;
}
}
return 0;
}
/*---------------------------------------------------------------------------*/
SENSORS_SENSOR(ext_sensor, "Ext",
value, configure, status);