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
nucleo_f401re.overlay
prj.conf
README.rst	doc: fix misspellings in rst docs	2019-10-29 06:01:13 +01:00
sample.yaml	tests: fix test identifiers	2019-12-09 15:53:44 -05:00

README.rst

.. _ti_tmp116_sample:

TI_TMP116 Sample
################

Description
***********

This sample application periodically takes temperature readings using the ti_tmp116
sensor driver. The result is written to the console.

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

This sample needs a TI TMP116 sensor connected to the target board's I2C
connector.


Wiring
******

This sample is tested with Nucleo STM32F401RE board.

The sensor operates at 3.3V and uses I2C to communicate with the board.

External Wires:

* Breakout **GND** pin <--> Nucleo **GND** pin
* Breakout **VCC** pin <--> Nucleo **3V3** pin
* Breakout **SDA** pin <--> Nucleo **CN5-D14** pin
* Breakout **SCL** pin <--> Nucleo **CN5-D15** pin

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

In order to build the sample, connect the board to the computer with a USB cable and enter the
following commands:

.. zephyr-app-commands::
   :zephyr-app: samples/sensor/tmp116
   :board: nucleo_f401re
   :goals: build flash
   :compact:

Sample Output
*************
The output can be seen via a terminal emulator (e.g. minicom). Connect the board with a USB cable
to the computer and open /dev/ttyACM0 with the below serial settings:

* Baudrate: 115200
* Parity: None
* Data: 8
* Stop bits: 1

The output should look like this:

.. code-block:: console

    Device TMP116 - 0x200010a8 is ready
    temp is 26.7031250 oC
    temp is 26.7109375 oC
    ...