zephyr

History

Anas Nashif efb47ace39 doc: samples: cleanup board reference and layout Cleanup references to boards in some of the example and use the same boards through the examples. Other minot cleanups and make the text more generic and not specific to certain boards. Signed-off-by: Anas Nashif <anas.nashif@intel.com>		2019-06-13 16:09:02 -04:00
..
src	samples: blinky: cleanup to use just DT and remove board.h	2018-11-09 11:53:18 -05:00
CMakeLists.txt	license: cleanup: add SPDX Apache-2.0 license identifier	2019-04-07 08:45:22 -04:00
prj.conf
README.rst	doc: samples: cleanup board reference and layout	2019-06-13 16:09:02 -04:00
sample.yaml	samples: add test identifier	2019-03-29 17:44:11 -04:00

README.rst

.. _blinky-sample:

Blinky Application
##################

Overview
********

The Blinky example shows how to configure GPIO pins as outputs which can also be
used to drive LEDs on the hardware usually delivered as "User LEDs" on many of
the supported boards in Zephyr.

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

The demo assumes that an LED is connected to one of GPIO lines. The
sample code is configured to work on boards that have defined the led0
alias in their board device tree description file. Doing so will generate
these variables:

- LED0_GPIO_CONTROLLER
- LED0_GPIO_PIN


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

This samples does not output anything to the console.  It can be built and
flashed to a board as follows:

.. zephyr-app-commands::
   :zephyr-app: samples/basic/blinky
   :board: reel_board
   :goals: build flash
   :compact:

After flashing the image to the board, the user LED on the board should start to
blink.