mirror of https://github.com/ArduPilot/ardupilot
36 lines
1.1 KiB
C++
36 lines
1.1 KiB
C++
/*
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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_HAL/AP_HAL.h>
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#include <AP_HAL/Semaphores.h>
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#include <AP_HAL/Device.h>
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#define TSYS01_ADDR 0x77
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class TSYS01 {
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public:
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bool init(uint8_t bus);
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float temperature(void) const { return _temperature; } // temperature in degrees C
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bool healthy(void) const { // do we have a valid temperature reading?
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return _healthy;
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}
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AP_HAL::OwnPtr<AP_HAL::Device> _dev;
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private:
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float _temperature; // degrees C
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bool _healthy; // we have a valid temperature reading to report
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uint16_t _k[5]; // internal calibration for temperature calculation
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bool _reset(void) const; // reset device
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bool _read_prom(void); // read (relevant) internal calibration registers into _k
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bool _convert(void) const; // begin an ADC conversion (min:7.40ms typ:8.22ms max:9.04ms)
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uint32_t _read_adc(void) const;
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uint16_t _read_prom_word(uint8_t word) const;
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void _timer(void); // update the temperature, called at 20Hz
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void _calculate(uint32_t adc); // calculate temperature using adc reading and internal calibration
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};
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