Pressure readings!

Explanation of Functions

The library and example code demonstrate the most popular functions

supported by the MPL3115A2. Here is an explanation of all the available

functions in the library:

• myPressure.begin() gets sensor on the I C bus.

• myPressure.readAltitude() returns a float with meters above sea

level. Ex: 1638.94

• myPressure.readAltitudeFt() returns a float with feet above sea

level. Ex: 5376.68

• myPressure.readPressure() returns a float with barometric pressure

in Pa. Ex: 83351.25

• myPressure.readTemp() returns a float with current temperature in

Celsius. Ex: 23.37

• myPressure.readTempF() returns a float with current temperature in

Fahrenheit. Ex: 73.96

• myPressure.setModeBarometer() puts the sensor into Pascal

measurement mode.

• myPressure.setModeAltimeter() puts the sensor into altimetry

mode.

• myPressure.setModeStandy() puts the sensor into Standby mode.

Required when changing CTRL1 register.

• myPressure.setModeActive() starts taking measurements!

• myPressure.setOversampleRate(byte) sets the # of samples from

1 to 128. See note below *

• myPressure.enableEventFlags() sets the fundamental event flags.

Required during setup.

When you call the readAltitude, readAltitudeFt, readPressure, or readTemp

you will get a float with the sensor reading or an error code:

• 1638.94 is an example of a valid reading.

• -999 indicates that I2C timed out (512ms max). Check your

connections.

Oversample settings

2

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