mirror of
https://github.com/zephyrproject-rtos/zephyr
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407b49b35c
Using find_package to locate Zephyr.
Old behavior was to use $ENV{ZEPHYR_BASE} for inclusion of boiler plate
code.
Whenever an automatic run of CMake happend by the build system / IDE
then it was required that ZEPHYR_BASE was defined.
Using ZEPHYR_BASE only to locate the Zephyr package allows CMake to
cache the base variable and thus allowing subsequent invocation even
if ZEPHYR_BASE is not set in the environment.
It also removes the risk of strange build results if a user switchs
between different Zephyr based project folders and forgetting to reset
ZEPHYR_BASE before running ninja / make.
Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
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|---|---|---|
| .. | ||
| src | ||
| CMakeLists.txt | ||
| prj.conf | ||
| README.rst | ||
| sample.yaml | ||
.. _hts221:
HTS221: Temperature and Humidity Monitor
########################################
Overview
********
This sample periodically reads temperature and humidity from the HTS221
Temperature & Humidity Sensor and displays it on the console
Requirements
************
This sample uses the HTS221 sensor controlled using the I2C interface.
References
**********
- HTS211: http://www.st.com/en/mems-and-sensors/hts221.html
Building and Running
********************
This project outputs sensor data to the console. It requires an HTS221
sensor, which is present on the disco_l475_iot1 board.
.. zephyr-app-commands::
:zephyr-app: samples/sensor/hts221
:board: disco_l475_iot1
:goals: build
:compact:
Sample Output
=============
.. code-block:: console
Temperature:25.3 C
Relative Humidity:40%
Temperature:25.3 C
Relative Humidity:40%
Temperature:25.3 C
Relative Humidity:40%
Temperature:25.3 C
Relative Humidity:40%
<repeats endlessly every 2 seconds>