Files
file	htu21d.h
	HTU21D Temperature and Humidity Sensor.

Functions
KSensorStatus	htu21d_setup (void)
	Setup the I2C interface for talking with the HTU21D. More...

KSensorStatus	htu21d_read_temperature (float *temp)
	Sends temperature command and reads back temperature data. More...

KSensorStatus	htu21d_read_humidity (float *hum)
	Sends humidity command and reads back humidity data. More...

KSensorStatus	htu21d_reset (void)
	Sends reset command which powers sensor off and on again. More...

Function Documentation

KSensorStatus htu21d_read_humidity ( float * hum )

Sends humidity command and reads back humidity data.

Parameters

hum	pointer to relative humidity in percentage (0.0 - 100.0)

Returns: KSensorStatus, SENSOR_OK on success, SENSOR_ERROR, SENSOR_READ_ERROR, SENSOR_WRITE_ERROR on error

KSensorStatus htu21d_read_temperature ( float * temp )

Sends temperature command and reads back temperature data.

Parameters

temp	pointer to temperature in celsius (-40.0 to 125.0)

Returns: KSensorStatus, SENSOR_OK on success, SENSOR_ERROR, SENSOR_READ_ERROR, SENSOR_WRITE_ERROR on error

KSensorStatus htu21d_reset ( void )

Sends reset command which powers sensor off and on again.

KSensorStatus htu21d_setup ( void )

Setup the I2C interface for talking with the HTU21D.

Files