zephyr/samples/basic/threads
Erwan Gouriou 162b6e4b35 samples: Allow use of "CONTROLLER" postfix for LED and GPIO
Rework samples using LED and GPIO to enforce use of "CONTROLLER"
as LED and PGIO postifx.
Change impact all samples that could be run by boards yet moved to
GPIO node generations, which is only STM32 for now

Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
2018-04-19 09:32:39 -05:00
..
src samples: Allow use of "CONTROLLER" postfix for LED and GPIO 2018-04-19 09:32:39 -05:00
CMakeLists.txt Introduce cmake-based rewrite of KBuild 2017-11-08 20:00:22 -05:00
README.rst samples: threads: Rewrite misleading sample 2018-01-08 14:25:11 -05:00
prj.conf samples: threads: Rewrite misleading sample 2018-01-08 14:25:11 -05:00
sample.yaml samples: remove more build_only tags 2017-12-28 20:24:29 -05:00

README.rst

.. _96b_carbon_multi_thread_blinky:

Basic Thread Example
####################

Overview
********

This example demonstrates spawning of multiple threads using K_THREAD_DEFINE.

The example works by spawning three threads. The first two threads control a
separate LED. Both of these LEDs (USR1 and USR2) have their individual loop
control and timing logic defined by separate functions.

After either thread toggles its LED, it also pushes information into a
FIFO identifying which thread toggled its LED and how many times it
was done.

The third thread, ``uart_out()``, uses printk (over the UART) to
display the information that comes through the FIFO.

- blink1() controls the USR1 LED that has a 100ms sleep cycle
- blink2() controls the USR2 LED that has a 1000ms sleep cycle

Each thread is then defined at compile time using K_THREAD_DEFINE.

Building
********

.. zephyr-app-commands::
   :zephyr-app: samples/basic/threads
   :board: 96b_carbon
   :goals: build flash
   :compact: