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Android Things Quick Start Guide

You're reading from  Android Things Quick Start Guide

Product type Book
Published in Aug 2018
Publisher Packt
ISBN-13 9781789341799
Pages 192 pages
Edition 1st Edition
Languages
Author (1):
Raul Portales Raul Portales
Profile icon Raul Portales

Temperature and pressure sensor (Bmx280)

The temperature and pressure sensor on the Rainbow HAT uses the BMP280 chip. A similar component—BME280—has an extra humidity sensor and the driver is designed to work with both chips (hence, the X in the name Bmx280) since both have the same internal protocol. Again, remember that the one in the Rainbow HAT does not include a humidity sensor.

Android Things offers two ways to read data from sensors. The first one is to proactively read a value from the component itself, and the second one is to configure a SensorDriver that will deliver readings via a listener whenever the values change. This is meant to use the same framework as the sensors on a phone (namely gyroscope, magnetometer, and accelerometer).

Querying the component directly is simpler; it gives all the control and also all the responsibility to us. On the other...

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