Synchronization Sample

Overview

A simple application that demonstrates basic sanity of the kernel. Two threads (A and B) take turns printing a greeting message to the console, and use sleep requests and semaphores to control the rate at which messages are generated. This demonstrates that kernel scheduling, communication, and timing are operating correctly.

Building and Running

This project outputs to the console. It can be built and executed on QEMU as follows:

cd $ZEPHYR_BASE/samples/synchronization
mkdir build && cd build
cmake -GNinja -DBOARD=qemu_x86 ..
ninja run

On the supported ARM MCUs the project can be built with the MPU and the Thread Stack Guard feature enabled:

# On Linux/macOS
cd $ZEPHYR_BASE/samples/synchronization
mkdir build && cd build
# On Windows
cd %ZEPHYR_BASE%\samples\synchronization
mkdir build & cd build
cmake -GNinja -DBOARD=v2m_beetle -DCONF_FILE=prj_stack_guard.conf ..
ninja
ninja flash

Sample Output

threadA: Hello World!
threadB: Hello World!
threadA: Hello World!
threadB: Hello World!
threadA: Hello World!
threadB: Hello World!
threadA: Hello World!
threadB: Hello World!
threadA: Hello World!
threadB: Hello World!

<repeats endlessly>