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Showing content from https://github.com/stm32duino/Arduino_Core_STM32/wiki/HTS221 below:

HTS221 · stm32duino/Arduino_Core_STM32 Wiki · GitHub

Arduino library to support the HTS221 capacitive digital sensor for relative humidity and temperature.

• HTS221Sensor(TwoWire*, uint8_t): class constructor
  Params pointer to the I2C instance
  Params (optional) address of the component's instance

• Enable: enable sensor
  Returns HTS221_STATUS_OK in case of success, an error code otherwise

• Disable: disable sensor
  Returns HTS221_STATUS_OK in case of success, an error code otherwise

• ReadID(uint8_t*): read ID address
  Params pointer where store the ID of the device
  Returns HTS221_STATUS_OK in case of success, an error code otherwise

• Reset: reboot memory content
  Returns HTS221_STATUS_OK in case of success, an error code otherwise

• GetHumidity(float*): read output register and calculate the humidity
  Params pointer to data
  Returns HTS221_STATUS_OK in case of success, an error code otherwise

• GetTemperature(float*): read output register and calculate the temperature
  Params pointer to data
  Returns HTS221_STATUS_OK in case of success, an error code otherwise

• GetODR(float*): get the output data rate mode
  Params pointer to data
  Returns HTS221_STATUS_OK in case of success, an error code otherwise

• SetODR(float*): set the output data rate mode
  Params data rate to be set
  Returns HTS221_STATUS_OK in case of success, an error code otherwise

• ReadReg(uint8_t, uint8_t*): read data from register
  Params register address
  Params pointer to register data
  Returns HTS221_STATUS_OK in case of success, an error code otherwise

• WriteReg(uint8_t, uint8_t): write data to register
  Params register address
  Params register data
  Returns HTS221_STATUS_OK in case of success, an error code otherwise

Note

This library uses the Wire library presents in the STM32 core by default.

• DISCO_IOT_DataLogTerminal: reads temperature and humidity values and prints them.

You can find the source files at
https://github.com/stm32duino/HTS221

The HTS221 datasheet is available at
http://www.st.com/content/st_com/en/products/mems-and-sensors/humidity-sensors/hts221.html

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