12f8f76165
Introducing CMake is an important step in a larger effort to make Zephyr easy to use for application developers working on different platforms with different development environment needs. Simplified, this change retains Kconfig as-is, and replaces all Makefiles with CMakeLists.txt. The DSL-like Make language that KBuild offers is replaced by a set of CMake extentions. These extentions have either provided simple one-to-one translations of KBuild features or introduced new concepts that replace KBuild concepts. This is a breaking change for existing test infrastructure and build scripts that are maintained out-of-tree. But for FW itself, no porting should be necessary. For users that just want to continue their work with minimal disruption the following should suffice: Install CMake 3.8.2+ Port any out-of-tree Makefiles to CMake. Learn the absolute minimum about the new command line interface: $ cd samples/hello_world $ mkdir build && cd build $ cmake -DBOARD=nrf52_pca10040 .. $ cd build $ make PR: zephyrproject-rtos#4692 docs: http://docs.zephyrproject.org/getting_started/getting_started.html Signed-off-by: Sebastian Boe <sebastian.boe@nordicsemi.no> |
||
|---|---|---|
| .. | ||
| src | ||
| CMakeLists.txt | ||
| Makefile | ||
| prj.conf | ||
| README.rst | ||
| sample.yaml | ||
.. _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.
The third thread, uart_out(), sends out messages on the UART using printk().
- 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
********
.. code-block:: console
$ cd samples/basic/threads
$ make