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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> |
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| CMakeLists.txt | ||
| Makefile | ||
| prj.conf | ||
| README.rst | ||
| sample.yaml | ||
.. _kerneleventlogger_sample:
Kernel Event Logger Sample
################################
Overview
********
A simple application that demonstrates use of kernel event
logger feature. Two threads (A and B) of the same priority
are created and main thread is configured to have low priority,
which reads the events from kernel event logger's buffer and
prints to the console. When thread 'A' gets scheduled it will
sleep for 1 second. Similarly when thread 'B' gets scheduled
it will sleep for 0.5 seconds. When both A and B are sleeping,
the main thread gets scheduled and retrieves the events captured
from kernel event logger's buffer and prints to the console.
Building and Running
********************
This project outputs to the console. It can be built and executed
on QEMU as follows:
.. code-block:: console
$ cd samples/subsys/kernel_event_logger
$ make run
Sample Output
=============
.. code-block:: console
tid of context switched thread = 400080 at time = 96538
tid of context switched thread = 4000c0 at time = 98047
thread = 400080, is moved to = REDAY_Q , at time = 51019657
thread = 400040, is moved to = REDAY_Q , at time = 51024998