57 lines
2.5 KiB
C
57 lines
2.5 KiB
C
/* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/** library for Maxim DS18B20 digital temperature sensor (using 1-Wire protocol) (API)
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* @file sensor_ds18b20.h
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* @author King Kévin <kingkevin@cuvoodoo.info>
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* @date 2017
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* @note peripherals used: 1-Wire (timer @ref onewire_master_timer, GPIO @ref onewire_master_gpio)
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* @warning this library does not support parasite power mode and alarms
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*/
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#pragma once
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/** setup 1-Wire peripheral to communicate with sensors on bus */
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void sensor_ds18b20_setup(void);
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/** get number of DS18B20 sensors on bus
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* @return number of DS18B20 sensors on bus
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*/
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uint64_t sensor_ds18b20_number(void);
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/** verify if only DS18B20 sensors are on the bus
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* @return if only DS18B20 sensors are on the bus
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*/
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bool sensor_ds18b20_only(void);
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/** send all DS18B20 slaves on the bus
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* @param[out] code ROM code for sensor (0 if error occurred)
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* @return if an additional sensors have been detected
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*/
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bool sensor_ds18b20_list(uint64_t* code);
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/** start converting (e.g. measuring) temperature
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* @warning conversion time to wait before reading temperature depends on the resolution set (9 bits: 93.75ms, 10 bits: 187.5ms, 11 bits: 375ms, 12 bits: 950ms)
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* @param[in] code ROM code of sensor to start conversion on (0 for all, if only DS18B20 sensors are on the bus)
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* @return if conversion started
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*/
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bool sensor_ds18b20_convert(uint64_t code);
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/** get converted temperature
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* @note 85.0 C is the default temperature when no conversion has been performed
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* @param[in] code ROM code of sensor
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* @return temperature (NaN if error)
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*/
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float sensor_ds18b20_temperature(uint64_t code);
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/** set conversion precision
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* @param[in] code ROM code of sensor to start conversion on (0 for all, if only DS18B20 sensors are on the bus)
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* @param[in] precision precision in bits (9-12)
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* @return if operation succeeded
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*/
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bool sensor_ds18b20_precision(uint64_t code, uint8_t precision);
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