This example demonstrates connecting an I2C Atmospheric pressure sensor to Android Things using UPM.

Use of the Grove Kit (for Joule or Edison) makes this easy. See the following links for getting a starter kit.

• https://www.seeedstudio.com/Grove-Maker-Kit-for-Intel-Joule-p-2796.html
• https://www.seeedstudio.com/Grove-Starter-Kit-V3-p-1855.html

You will need:

1. Android Things compatible board.
2. Grove header or Breakout board.
3. Joule shield.
4. A BME280 Atmospheric pressure sensor.

On Android Studio, select the "bme280" module in select box by the "Run" button and then click on the "Run" button.

The I2C bus to be used is specified in the strings.xml file (src/res/values directory).

<resources>
    <string name="app_name">BME280</string>

    <string name="Bme_Edison_Arduino">I2C6</string>
    <string name="Bme_Edison_Sparkfun">I2C1</string>
    <string name="Bme_Joule_Tuchuck">I2C0</string>
</resources>

The code will automatically determine the board type being run on (modify BoarDefaults.java in the driver library to add another board) and select a string from this file for the I2C bus. The above example uses I2C6 on the Edison Arduino shield and I2C0 on the Joule Tuchuck development board. These strings are programmed into the Peripheral Manager and read from their into the UPM library to determine the bus to be used.

See the top level README.md for a table describing the available I2C busses and where to find them on the board.