Line data    Source code

       1             : /*
       2             :    This program is free software: you can redistribute it and/or modify
       3             :    it under the terms of the GNU General Public License as published by
       4             :    the Free Software Foundation, either version 3 of the License, or
       5             :    (at your option) any later version.
       6             : 
       7             :    This program is distributed in the hope that it will be useful,
       8             :    but WITHOUT ANY WARRANTY; without even the implied warranty of
       9             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      10             :    GNU General Public License for more details.
      11             : 
      12             :    You should have received a copy of the GNU General Public License
      13             :    along with this program.  If not, see <http://www.gnu.org/licenses/>.
      14             :  */
      15             : 
      16             : /*
      17             :  * I2C driver for Measurement Specialties MEAS TSYS03 digital temperature sensor
      18             :  */
      19             : 
      20             : #pragma once
      21             : #include "AP_TemperatureSensor_Backend.h"
      22             : 
      23             : #ifndef AP_TEMPERATURE_SENSOR_TSYS03_ENABLED
      24             : #define AP_TEMPERATURE_SENSOR_TSYS03_ENABLED AP_TEMPERATURE_SENSOR_ENABLED
      25             : #endif
      26             : 
      27             : #if AP_TEMPERATURE_SENSOR_TSYS03_ENABLED
      28             : 
      29             : #define TSYS03_ADDR_CSB0 0x40
      30             : 
      31             : class AP_TemperatureSensor_TSYS03 : public AP_TemperatureSensor_Backend {
      32             :     using AP_TemperatureSensor_Backend::AP_TemperatureSensor_Backend;
      33             : 
      34             : public:
      35             :     __INITFUNC__ void init(void) override;
      36             : 
      37           0 :     void update() override {};
      38             : 
      39             : 
      40             : private:
      41             :     // reset device
      42             :     bool reset(void) const;
      43             : 
      44             :     // begin an ADC conversion (min:7.40ms typ:8.22ms max:9.04ms)
      45             :     void start_next_sample();
      46             :     uint16_t read_adc(void) const;
      47             : 
      48             :     // update the temperature, called at 20Hz
      49             :     void _timer(void);
      50             : 
      51             :     // calculate temperature using adc reading and internal calibration
      52             :     float calculate(const uint16_t adc) const;
      53             : };
      54             : #endif // AP_TEMPERATURE_SENSOR_TSYS03_ENABLED