2019-03-27 15:24:28 +08:00
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.. _bme280:
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BME280 Humidity and Pressure Sensor
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###################################
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Overview
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********
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This sample application periodically reads temperature, pressure and humidity data from
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the first available device that implements SENSOR_CHAN_AMBIENT_TEMP, SENSOR_CHAN_PRESS,
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and SENSOR_CHAN_HUMIDITY. This sample checks the sensor in polling mode (without
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interrupt trigger).
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Building and Running
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********************
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2019-06-13 20:31:56 +08:00
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This sample application uses an BME280 sensor connected to a board via I2C.
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2019-03-27 15:24:28 +08:00
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Connect the sensor pins according to the connection diagram given in the `bme280 datasheet`_
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at page 38.
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.. zephyr-app-commands::
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:zephyr-app: samples/sensors/bme280
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2019-06-13 20:31:56 +08:00
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:board: nrf52840_pca10056
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2019-03-27 15:24:28 +08:00
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:goals: flash
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:compact:
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Sample Output
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=============
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To check output of this sample , any serial console program can be used.
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2019-06-13 20:31:56 +08:00
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This example uses ``picocom`` on the serial port ``/dev/ttyACM0``:
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2019-03-27 15:24:28 +08:00
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.. code-block:: console
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$ sudo picocom -D /dev/ttyUSB0
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.. code-block:: console
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temp: 27.950000; press: 100.571027; humidity: 61.014648
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temp: 27.940000; press: 100.570269; humidity: 61.012695
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temp: 27.950000; press: 100.570695; humidity: 61.002929
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2019-06-13 20:31:56 +08:00
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.. _bme280 datasheet: https://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BME280-DS002.pdf
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