balloonware / lps22hb

Arduino library to support the LPS22HB 260-1260 hPa absolute digital ouput barometer

LPS22HB

Arduino library to support the LPS22HB 260-1260 hPa absolute digital output barometer

API

This sensor uses I2C or SPI to communicate. For I2C it is then required to create a TwoWire interface before accessing to the sensors:

TwoWire dev_i2c(I2C2_SDA, I2C2_SCL);  
dev_i2c.begin();

For SPI it is then required to create a SPI interface before accessing to the sensors:

SPIClass dev_spi(SPI_MOSI, SPI_MISO, SPI_SCK);  
dev_spi.begin();

An instance can be created and enabled when the I2C bus is used following the procedure below:

LPS22HBSensor PressTemp(&dev_i2c);
PressTemp.begin();
PressTemp.Enable();

An instance can be created and enabled when the SPI bus is used following the procedure below:

LPS22HBSensor PressTemp(&dev_spi, CS_PIN);
PressTemp.begin();
PressTemp.Enable();

The access to the sensor values is done as explained below:

Read pressure and temperature.

float pressure;
float temperature;
PressTemp.GetPressure(&pressure);  
PressTemp.GetTemperature(&temperature);

Documentation

You can find the source files at
https://github.com/stm32duino/LPS22HB

The LPS22HB datasheet is available at
http://www.st.com/content/st_com/en/products/mems-and-sensors/pressure-sensors/lps22hb.html