mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-12-23 01:29:33 +00:00
89 lines
3.2 KiB
C
89 lines
3.2 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.
|
|
*
|
|
* This file is part of the Contiki operating system.
|
|
*
|
|
* $Id: example-ext-sensor.c,v 1.2 2010/05/03 22:02:59 nifi Exp $
|
|
*/
|
|
|
|
/**
|
|
* \file
|
|
* A very simple Contiki application showing how to use ext-sensor
|
|
* In this case a i-Snail current sensor for 10A is used to measure
|
|
* current.
|
|
* \author
|
|
* Joakim Eriksson <joakime@sics.se>
|
|
*/
|
|
|
|
#include "contiki.h"
|
|
#include "dev/leds.h"
|
|
#include "dev/ext-sensor.h"
|
|
#include <stdio.h>
|
|
/*---------------------------------------------------------------------------*/
|
|
PROCESS(ext_sensor_process, "ext-sensor process");
|
|
AUTOSTART_PROCESSES(&ext_sensor_process);
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
PROCESS_THREAD(ext_sensor_process, ev, data)
|
|
{
|
|
static struct etimer et;
|
|
static long maValue;
|
|
static long maSum;
|
|
static int time;
|
|
PROCESS_BEGIN();
|
|
|
|
SENSORS_ACTIVATE(ext_sensor);
|
|
|
|
leds_invert(LEDS_ALL);
|
|
|
|
etimer_set(&et, CLOCK_SECOND);
|
|
while(1) {
|
|
|
|
leds_invert(LEDS_ALL);
|
|
|
|
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
|
|
etimer_reset(&et);
|
|
|
|
leds_invert(LEDS_ALL);
|
|
|
|
/* the max value of the i-Snail sensor is 10 Ampere (=> ~5V) */
|
|
/* and we are using the 2.5 V reference voltage which */
|
|
/* means that 5 Ampere will make the sensor max-out. */
|
|
/* => 5 Ampere will be 4095 in the sensor ADC register */
|
|
maValue = (ext_sensor.value(ADC0) * 5000L) / 4095;
|
|
maSum += maValue;
|
|
time++;
|
|
printf("Measured ext1 %d %ld mA %ld W %ld Wh %d (s)\n",
|
|
ext_sensor.value(ADC0), maValue, (maValue * 230L) / 1000,
|
|
(maSum * 230L) / (1000L * 60 * 60), time);
|
|
}
|
|
|
|
PROCESS_END();
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|