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
sample.yaml

README.rst

.. _lps22hh:

LPS22HH: Temperature and Pressure Monitor
#########################################

Overview
********
This sample periodically reads pressure from the LPS22HH MEMS pressure
sensor and displays it on the console.


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

This sample uses the LPS22HH sensor controlled using the I2C interface.

References
**********

- LPS22HH: http://www.st.com/en/mems-and-sensors/lps22hh.html

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

This project outputs sensor data to the console. It requires an LPS22HH
sensor, which is present on the X-NUCLEO-IKS01A3 shield.

.. zephyr-app-commands::
   :zephyr-app: samples/sensor/lps22hh
   :board: nrf52_pca10040
   :shield: x_nucleo_iks01a3
   :goals: build
   :compact:

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

.. code-block:: console

   Configured for triggered collection at 1 Hz
   Observation: 1
   Pressure: 97.474 kPa
   Temperature: 22.19 C
   Observation: 2
   Pressure: 97.466 kPa
   Temperature: 22.21 C
   Observation: 3
   Pressure: 97.473 kPa
   Temperature: 22.21 C
   Observation: 4
   Pressure: 97.455 kPa
   Temperature: 22.21 C

   <repeats endlessly every second>