51 lines
1.3 KiB
C++
51 lines
1.3 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_TemperatureSensor_Backend.h"
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#ifndef AP_TEMPERATURE_SENSOR_TSYS01_ENABLE
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#define AP_TEMPERATURE_SENSOR_TSYS01_ENABLE AP_TEMPERATURE_SENSOR_ENABLED
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#endif
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#if AP_TEMPERATURE_SENSOR_TSYS01_ENABLE
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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_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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AP_HAL::OwnPtr<AP_HAL::Device> _dev;
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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(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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bool _convert(void) const;
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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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void _calculate(uint32_t adc);
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};
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#endif // AP_TEMPERATURE_SENSOR_TSYS01_ENABLE
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