battery-sensor.c

00001 /*
00002  * Copyright (c) 2006, Swedish Institute of Computer Science.
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. Neither the name of the Institute nor the names of its contributors
00014  *    may be used to endorse or promote products derived from this software
00015  *    without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
00018  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
00021  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00022  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00023  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00024  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00025  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00026  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00027  * SUCH DAMAGE.
00028  *
00029  * $Id: battery-sensor.c,v 1.6 2010/02/08 00:00:45 nifi Exp $
00030  *
00031  * -----------------------------------------------------------------
00032  *
00033  * Author  : Adam Dunkels, Joakim Eriksson, Niclas Finne
00034  * Created : 2005-11-01
00035  * Updated : $Date: 2010/02/08 00:00:45 $
00036  *           $Revision: 1.6 $
00037  */
00038 
00039 #include "dev/battery-sensor.h"
00040 #include <io.h>
00041 #include "dev/irq.h"
00042 
00043 const struct sensors_sensor battery_sensor;
00044 static unsigned int battery_value;
00045 
00046 /*---------------------------------------------------------------------------*/
00047 static int
00048 irq(void)
00049 {
00050   battery_value = ADC12MEM6;
00051   return 0;
00052 }
00053 /*---------------------------------------------------------------------------*/
00054 static int
00055 value(int type)
00056 {
00057   return ADC12MEM6/*battery_value*/;
00058 }
00059 /*---------------------------------------------------------------------------*/
00060 static int
00061 configure(int type, int value)
00062 {
00063   switch(type) {
00064   case SENSORS_HW_INIT:
00065     battery_value = 0;
00066     return 1;
00067   case SENSORS_ACTIVE:
00068     if(value) {
00069       if(!irq_adc12_active(6)) {
00070         irq_adc12_activate(6, (INCH_4 + SREF_0), irq);
00071       }
00072     } else {
00073       irq_adc12_deactivate(6);
00074     }
00075     return 1;
00076   }
00077   return 0;
00078 }
00079 /*---------------------------------------------------------------------------*/
00080 static int
00081 status(int type)
00082 {
00083   switch(type) {
00084   case SENSORS_ACTIVE:
00085   case SENSORS_READY:
00086     return irq_adc12_active(6);
00087   }
00088   return 0;
00089 }
00090 /*---------------------------------------------------------------------------*/
00091 SENSORS_SENSOR(battery_sensor, BATTERY_SENSOR,
00092                value, configure, status);

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