contiki/platform/avr-rss2/dev/temp-sensor.h
2016-02-22 20:46:07 +01:00

72 lines
2.9 KiB
C

/*
* Copyright (c) 2015, Copyright Per Lindgren <per.o.lindgren@gmail.com>
* 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.
*
*
* Author : Per Lindgren <per.o.lindgren@gmail.com>
* Hacked by: Robert Olsson robert@radio-sensors.com
* Created : 2015-11-22
*/
#ifndef TEMP_SENSOR_H_
#define TEMP_SENSOR_H_
#include "lib/sensors.h"
#include <sys/clock.h>
#include "contiki.h"
#include "rss2.h"
#define DS18B20_1_PIN OW_BUS_0
#define DS18B20_1_IN PIND
#define DS18B20_1_OUT PORTD
#define DS18B20_1_DDR DDRD
#define OW_SET_PIN_LOW() (DS18B20_1_OUT &= ~(1 << DS18B20_1_PIN))
#define OW_SET_PIN_HIGH() (DS18B20_1_OUT |= (1 << DS18B20_1_PIN))
#define OW_SET_OUTPUT() (DS18B20_1_DDR |= (1 << DS18B20_1_PIN))
#define OW_SET_INPUT() (DS18B20_1_DDR &= ~(1 << DS18B20_1_PIN))
#define OW_GET_PIN_STATE() ((DS18B20_1_IN & (1 << DS18B20_1_PIN)) ? 1 : 0)
#define DS18B20_COMMAND_READ_SCRATCH_PAD 0xBE
#define DS18B20_COMMAND_START_CONVERSION 0x44
#define DS18B20_COMMAND_SKIP_ROM 0xCC
/* probe_for_ds18b20 probes for the sensor. Returns 0 on failure, 1 on success
* Assumption: only one sensor on the "1-wire bus", on port DS18B20_1_PIN */
extern uint8_t ds18b20_probe(void);
extern uint8_t ds18b20_get_temp(double *temp);
extern uint8_t crc8_ds18b20(uint8_t *buf, uint8_t buf_len);
extern const struct sensors_sensor temp_sensor;
#define TEMP_SENSOR "temp"
#endif /* TEMP_SENSOR_H_ */