mirror of https://github.com/ArduPilot/ardupilot
62 lines
1.9 KiB
C++
62 lines
1.9 KiB
C++
/*
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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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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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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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* I2C driver for Measurement Specialties MEAS TSYS01 digital temperature sensor
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*/
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#pragma once
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#include "AP_TemperatureSensor_Backend.h"
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#ifndef AP_TEMPERATURE_SENSOR_TSYS01_ENABLED
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#define AP_TEMPERATURE_SENSOR_TSYS01_ENABLED AP_TEMPERATURE_SENSOR_ENABLED
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#endif
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#if AP_TEMPERATURE_SENSOR_TSYS01_ENABLED
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#define TSYS01_ADDR_CSB0 0x77
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#define TSYS01_ADDR_CSB1 0x76
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class AP_TemperatureSensor_TSYS01 : public AP_TemperatureSensor_Backend {
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using AP_TemperatureSensor_Backend::AP_TemperatureSensor_Backend;
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public:
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void init(void) override;
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void update() override {};
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private:
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uint16_t _k[5]; // internal calibration for temperature calculation
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// reset device
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bool reset(void) const;
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// read (relevant) internal calibration registers into _k
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bool read_prom(void);
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uint16_t read_prom_word(const uint8_t word) const;
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// begin an ADC conversion (min:7.40ms typ:8.22ms max:9.04ms)
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void start_next_sample();
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uint32_t read_adc(void) const;
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// update the temperature, called at 20Hz
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void _timer(void);
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// calculate temperature using adc reading and internal calibration
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float calculate(const uint32_t adc) const;
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};
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#endif // AP_TEMPERATURE_SENSOR_TSYS01_ENABLED
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