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31 lines
1.0 KiB
Markdown
31 lines
1.0 KiB
Markdown
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## About
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This is a test application for the BME280 Pressure, Temperature and
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Humidity sensor.
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## Usage
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The application will initialize the BME280 device and display its
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calibration coefficients. More information can be found on the
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[Bosch website][1]
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And in this [BST-BME280_DS001-11 datasheet] [2]
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Notice that it is necessary to first read the temperature even if only one
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of the other values (humidity or pressure) is needed. This is described in
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the above mentioned datasheet.
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After initialization, every 2 seconds, the application:
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* reads and displays the temperature (d°C);
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* reads and displays the pressure (Pa);
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* reads and displays the humidity (%rH);
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## Overruling default parameters
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If your device is at a different I2C address than the default (0x77) you
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can build the test as follows:
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export CFLAGS=-DBME280_PARAM_I2C_ADDR=0x76
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make -C tests/driver_bme280 BOARD=sodaq-autonomo
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[1]: http://www.bosch-sensortec.com/en/bst/products/all_products/bme280
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[2]: https://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BME280_DS001-11.pdf
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