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Support for BME280 added.

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new file:   dev/bme280/README.bme280
	new file:   dev/bme280/bme280-sensor.c
	new file:   dev/bme280/bme280-sensor.h
	new file:   dev/bme280/bme280.c
	new file:   dev/bme280/bme280.h
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Robert Olsson 2016-09-16 09:30:45 +02:00 • committed by Antonio Lignan
parent 1abc95a08e
commit cfabf0e6a2
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dev/bme280/README.bme280 Normal file
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Contiki implementation for Bosch Sensortec BME280 sensor.
BME280 is compact and fast and includes temp, RH, and pressure.
Chip uses I2C or SPI. This implementation and follow Contiki
device API and I2C.
For better performance, less chip warm up and less I2C transactions
burst read is recommended. Here all T/RH/P is read in one single
I2C read and kept the measurements have the same time.
The burst read is stored in struct bme280_mea which accessible from
the Contiki. Also note that the full chip resolution is available.
The variables are overscaled to give the app full controlover resolution.
See bme280.h
The pressure can be calculated with 32 or 64. The define BME280_64BIT
controls this. Typically in your project-conf.h
Implemented according to datasheet Rev 1.1.
Limitations:
Implementation implements Weather Mode which uses forced one-shot
mode no oversampling nor filters and reads all T/RH/P in one read.