contiki/core/lib/sensors.h

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/*
* Copyright (c) 2009, 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: sensors.h,v 1.9 2010/02/23 18:27:04 adamdunkels Exp $
*/
#ifndef __SENSORS_H__
#define __SENSORS_H__
#include "contiki.h"
/* some constants for the configure API */
#define SENSORS_HW_INIT 128 /* internal - used only for initialization */
#define SENSORS_ACTIVE 129 /* ACTIVE => 0 -> turn off, 1 -> turn on */
#define SENSORS_READY 130 /* read only */
#define SENSORS_ACTIVATE(sensor) (sensor).configure(SENSORS_ACTIVE, 1)
#define SENSORS_DEACTIVATE(sensor) (sensor).configure(SENSORS_ACTIVE, 0)
#define SENSORS_SENSOR(name, type, value, configure, status) \
const struct sensors_sensor name = { type, value, configure, status }
#define SENSORS_NUM (sizeof(sensors) / sizeof(struct sensors_sensor *))
#define SENSORS(...) \
const struct sensors_sensor *sensors[] = {__VA_ARGS__, NULL}; \
unsigned char sensors_flags[SENSORS_NUM]
struct sensors_sensor {
char * type;
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int (* value) (int type);
int (* configure) (int type, int value);
int (* status) (int type);
};
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const struct sensors_sensor *sensors_find(const char *type);
const struct sensors_sensor *sensors_next(const struct sensors_sensor *s);
const struct sensors_sensor *sensors_first(void);
void sensors_changed(const struct sensors_sensor *s);
extern process_event_t sensors_event;
PROCESS_NAME(sensors_process);
#endif /* __SENSORS_H__ */