Capacitive digital sensor for relative humidity and temperature.
Dependencies: X_NUCLEO_COMMON ST_INTERFACES
Dependents: HelloWorld_ST_Sensors MOTENV_Mbed mbed-os-mqtt-client HTS221_JS ... more
HTS221Sensor.h
- Committer:
- cparata
- Date:
- 2019-03-04
- Revision:
- 3:aadcccf527ef
- Parent:
- 2:312ee2694a77
- Child:
- 4:9f317607860e
File content as of revision 3:aadcccf527ef:
/** ****************************************************************************** * @file HTS221Sensor.h * @author CLab * @version V1.0.0 * @date 5 August 2016 * @brief Abstract class of an HTS221 Humidity and Temperature sensor. ****************************************************************************** * @attention * * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************** */ /* Prevent recursive inclusion -----------------------------------------------*/ #ifndef __HTS221Sensor_H__ #define __HTS221Sensor_H__ /* Includes ------------------------------------------------------------------*/ #include "DevI2C.h" #include "HTS221_driver.h" #include "HumiditySensor.h" #include "TempSensor.h" #include <assert.h> /* Class Declaration ---------------------------------------------------------*/ /** * Abstract class of an HTS221 Humidity and Temperature sensor. */ class HTS221Sensor : public HumiditySensor, public TempSensor { public: HTS221Sensor(SPI *spi, PinName cs_pin=NC, PinName drdy_pin=NC); // SPI3W ONLY HTS221Sensor(DevI2C *i2c, uint8_t address=HTS221_I2C_ADDRESS, PinName drdy_pin=NC); virtual int init(void *init); virtual int read_id(uint8_t *id); virtual int get_humidity(float *pfData); virtual int get_temperature(float *pfData); int enable(void); int disable(void); int reset(void); int get_odr(float *odr); int set_odr(float odr); int read_reg(uint8_t reg, uint8_t *data); int write_reg(uint8_t reg, uint8_t data); /** * @brief Utility function to read data. * @param pBuffer: pointer to data to be read. * @param RegisterAddr: specifies internal address register to be read. * @param NumByteToRead: number of bytes to be read. * @retval 0 if ok, an error code otherwise. */ uint8_t io_read(uint8_t* pBuffer, uint8_t RegisterAddr, uint16_t NumByteToRead) { if (_dev_spi) { /* Write Reg Address */ _dev_spi->lock(); _cs_pin = 0; /* Write RD Reg Address with RD bit*/ uint8_t TxByte = RegisterAddr | 0x80; _dev_spi->write((char *)&TxByte, 1, (char *)pBuffer, (int) NumByteToRead); _cs_pin = 1; _dev_spi->unlock(); return 0; } if (_dev_i2c) return (uint8_t) _dev_i2c->i2c_read(pBuffer, _address, RegisterAddr, NumByteToRead); return 1; } /** * @brief Utility function to write data. * @param pBuffer: pointer to data to be written. * @param RegisterAddr: specifies internal address register to be written. * @param NumByteToWrite: number of bytes to write. * @retval 0 if ok, an error code otherwise. */ uint8_t io_write(uint8_t* pBuffer, uint8_t RegisterAddr, uint16_t NumByteToWrite) { if (_dev_spi) { _dev_spi->lock(); _cs_pin = 0; _dev_spi->write(RegisterAddr); _dev_spi->write((char *)pBuffer, (int) NumByteToWrite, NULL, 0); _cs_pin = 1; _dev_spi->unlock(); return 0; } if (_dev_i2c) return (uint8_t) _dev_i2c->i2c_write(pBuffer, _address, RegisterAddr, NumByteToWrite); return 1; } private: /* Helper classes. */ DevI2C *_dev_i2c; SPI * _dev_spi; /* Configuration */ uint8_t _address; DigitalOut _cs_pin; InterruptIn _drdy_pin; }; #ifdef __cplusplus extern "C" { #endif uint8_t HTS221_io_write( void *handle, uint8_t WriteAddr, uint8_t *pBuffer, uint16_t nBytesToWrite ); uint8_t HTS221_io_read( void *handle, uint8_t ReadAddr, uint8_t *pBuffer, uint16_t nBytesToRead ); #ifdef __cplusplus } #endif #endif