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Dependencies: Servo Cayenne-LPP driver_mbed_TH02
Diff: th02.h
- Revision:
- 58:81c66fac6476
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/th02.h Tue Oct 22 08:45:41 2019 +0000 @@ -0,0 +1,123 @@ +// ********************************************************************************** +// Driver definition for HopeRF TH02 temperature and humidity sensor +// ********************************************************************************** +// Creative Commons Attrib Share-Alike License +// You are free to use/extend this library but please abide with the CC-BY-SA license: +// http://creativecommons.org/licenses/by-sa/4.0/ +// +// For any explanation see TH02 sensor information at +// http://www.hoperf.com/sensor/app/TH02.htm +// +// Code based on following datasheet +// http://www.hoperf.com/upload/sensor/TH02_V1.1.pdf +// +// Written by Charles-Henri Hallard (http://hallard.me) +//ported to mbed env by Philippe LAURENT (IUT de NICE France) +// +// History : V1.00 2014-07-14 - First release +// V1.10 2015-04-13 - changed to Wire library instead of I2C +// +// All text above must be included in any redistribution. +// +// ********************************************************************************** +#ifndef TH02_H +#define TH02_H + +#include <mbed.h> // + +// TH02 I2C Device address +#define TH02_I2C_ADDR 0x40 + +// TH02 Registers addresses +#define TH02_STATUS 0 +#define TH02_DATAh 1 +#define TH02_DATAl 2 +#define TH02_CONFIG 3 +#define TH02_ID 17 + +// TH02 custom error code return function +#define TH02_I2C_ERR 0xFF + +// Unititialized values (arbitrary) +#define TH02_UNINITIALIZED_TEMP 55555 // int32_t internal value +#define TH02_UNINITIALIZED_RH 1111 // int32_t internal value +#define TH02_UNDEFINED_VALUE 12345 // int16_t returned value + +// we decide error if conversion is >= 50ms +#define TH02_CONVERSION_TIME_OUT 50 + +// Bit definition of TH02 registers values +#define TH02_STATUS_RDY 0x01 + +#define TH02_CONFIG_START 0x01 +#define TH02_CONFIG_HEAT 0x02 +#define TH02_CONFIG_TEMP 0x10 +#define TH02_CONFIG_HUMI 0x00 +#define TH02_CONFIG_FAST 0x20 + +// THO2 Linearization Coefficients +#define TH02_A0 -4.7844 +#define TH02_A1 0.4008 +#define TH02_A2 -0.00393 + +// TH02 Temperature compensation Linearization Coefficients +#define TH02_Q0 0.1973 +#define TH02_Q1 0.00237 + + + + + +class TH02 { + public: + TH02(uint8_t address); + uint8_t getId(uint8_t * pvalue); + uint8_t getId(void); + uint8_t getStatus(uint8_t * pvalue); + bool isConverting(void); + uint8_t waitEndConversion(void); + uint8_t getConfig(uint8_t * pvalue); + uint8_t setConfig(uint8_t config); + uint8_t startTempConv(bool fastmode = false, bool heater = false); + uint8_t startRHConv(bool fastmode = false, bool heater = false); + int16_t roundInt(float value); + int16_t getConversionValue(void); + int16_t getConpensatedRH(bool round); + int32_t getLastRawRH(void); + int32_t getLastRawTemp(void); + // int16_t getConversionValue_Raw(void); + +/** + * TH02 constructor + * + * @param sda I2C data pin + * @param scl I2C clock pin + * @param address I2C slave sensor address + + */ + TH02(PinName sda, PinName scl, uint8_t address); + + /** + * MFRC522 destructor + */ + ~TH02(); + + + + private: +I2C m_I2C; + uint8_t writeCommand(uint8_t command, bool release=true); + uint8_t writeRegister(uint8_t reg, uint8_t value); + uint8_t readRegister(uint8_t reg, uint8_t * value); + + int32_t _last_temp; // Last measured temperature (for linearization) + int32_t _last_rh; // Last measured RH + uint8_t _address; // I2C Module Address + + + +}; + + + +#endif \ No newline at end of file