72 lines
2.9 KiB
C
72 lines
2.9 KiB
C
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/*
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* Copyright (c) 2015, Copyright Per Lindgren <per.o.lindgren@gmail.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*
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* Author : Per Lindgren <per.o.lindgren@gmail.com>
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* Hacked by: Robert Olsson robert@radio-sensors.com
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* Created : 2015-11-22
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*/
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#ifndef TEMP_SENSOR_H_
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#define TEMP_SENSOR_H_
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#include "lib/sensors.h"
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#include <sys/clock.h>
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#include "contiki.h"
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#include "rss2.h"
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#define DS18B20_1_PIN OW_BUS_0
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#define DS18B20_1_IN PIND
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#define DS18B20_1_OUT PORTD
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#define DS18B20_1_DDR DDRD
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#define OW_SET_PIN_LOW() (DS18B20_1_OUT &= ~(1 << DS18B20_1_PIN))
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#define OW_SET_PIN_HIGH() (DS18B20_1_OUT |= (1 << DS18B20_1_PIN))
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#define OW_SET_OUTPUT() (DS18B20_1_DDR |= (1 << DS18B20_1_PIN))
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#define OW_SET_INPUT() (DS18B20_1_DDR &= ~(1 << DS18B20_1_PIN))
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#define OW_GET_PIN_STATE() ((DS18B20_1_IN & (1 << DS18B20_1_PIN)) ? 1 : 0)
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#define DS18B20_COMMAND_READ_SCRATCH_PAD 0xBE
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#define DS18B20_COMMAND_START_CONVERSION 0x44
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#define DS18B20_COMMAND_SKIP_ROM 0xCC
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/* probe_for_ds18b20 probes for the sensor. Returns 0 on failure, 1 on success
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* Assumption: only one sensor on the "1-wire bus", on port DS18B20_1_PIN */
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extern uint8_t ds18b20_probe(void);
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extern uint8_t ds18b20_get_temp(double *temp);
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extern uint8_t crc8_ds18b20(uint8_t *buf, uint8_t buf_len);
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extern const struct sensors_sensor temp_sensor;
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#define TEMP_SENSOR "temp"
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#endif /* TEMP_SENSOR_H_ */
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