zephyr

History

Torsten Rasmussen 407b49b35c cmake: use find_package to locate Zephyr 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>		2020-03-27 16:23:46 +01:00
..
src
CMakeLists.txt	cmake: use find_package to locate Zephyr	2020-03-27 16:23:46 +01:00
prj.conf
README.rst	doc: fix LPS22HB doc indentation	2019-11-20 17:47:20 -05:00
sample.yaml

README.rst

.. _lps22hb:

LPS22HB: Temperature and Humidity Monitor
#########################################

Overview
********
This sample periodically reads pressure from the LPS22HB MEMS pressure
sensor and displays it on the console.


Requirements
************

This sample uses the LPS22HB sensor controlled using the I2C interface.

References
**********

- LPS22HB: http://www.st.com/en/mems-and-sensors/lps22hb.html

Building and Running
********************

This project outputs sensor data to the console. It requires an LPS22HB
sensor, which is present on the disco_l475_iot1 board.

.. zephyr-app-commands::
   :zephyr-app: samples/sensor/lps22hb
   :board: disco_l475_iot1
   :goals: build
   :compact:

Sample Output
=============

.. code-block:: console

   Observation:1
   Pressure:98.7 kPa
   Temperature:22.5 C
   Observation:2
   Pressure:98.7 kPa
   Temperature:22.5 C
   Observation:3
   Pressure:98.7 kPa
   Temperature:22.5 C

   <repeats endlessly every 2 seconds>