zephyr

History

David B. Kinder da963d94f9 samples: remove CONFIG_SERIAL from blinky As noted in the issue #20666 discussion, though the console is not used by this sample app, it can't really be "disabled" using this Kconfig option, so remove the CONFIG_SERIAL=n line. Fixes: #20666 Signed-off-by: David B. Kinder <david.b.kinder@intel.com>		2019-11-18 13:49:42 +01:00
..
src	samples: fix signed overflow in blinky example	2019-09-19 09:31:41 -05:00
CMakeLists.txt	…
README.rst	doc: s/device tree/devicetree/	2019-10-08 11:53:40 +02:00
prj.conf	samples: remove CONFIG_SERIAL from blinky	2019-11-18 13:49:42 +01:00
sample.yaml	sample/tests: replace DT_ define filters with dt_ functions	2019-11-04 09:02:14 -05:00

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 devicetree description file. Doing so will generate
these variables:

- DT_ALIAS_LED0_GPIOS_CONTROLLER
- DT_ALIAS_LED0_GPIOS_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.