bartoszek/zephyr
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
25ec17683f
zephyr/samples/subsys/logging/logger
History
Ulf Magnusson 92ef8582b9 Kconfig: Remove redundant $(ZEPHYR_BASE) from 'source's 
The $srctree environment variable gives the path relative to which
'(o)source' statements work (the current directory is used if $srctree
is unset). It is set to $ZEPHYR_BASE in cmake/kconfig.cmake, so there's
no need to qualify the source of Kconfig.zephyr in sample Kconfig files
(or in external projects).

All 'source's in Zephyr assume that the Zephyr root directory is used as
the srctree as well, and would break otherwise.

Remove the $(ZEPHYR_BASE)s to make it clearer that all 'source'
statements work relative to the Zephyr root. There was some user
confusion on IRC.

Also explain how things work in the documentation.

Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2018-10-10 11:28:27 -05:00
..
src samples: logger: test sample in CI 2018-10-05 10:09:08 -04:00
CMakeLists.txt cmake: Remove unnecessary KCONFIG_ROOT configuration 2018-09-21 13:37:21 -04:00
Kconfig Kconfig: Remove redundant $(ZEPHYR_BASE) from 'source's 2018-10-10 11:28:27 -05:00
prj.conf logging: Internal processing thread enabled by default 2018-07-19 09:50:18 -04:00
README.rst samples: subsys: logging: Add logger example 2018-06-29 10:16:45 +02:00
sample.yaml samples: logger: exclude qemu_xtensa [REVERTME] 2018-10-05 10:09:08 -04:00

README.rst 

.. _logger_sample:

Logging
###########

Overview
********
A simple application that demonstrates use of logging subsystem. It demonstrates
main features: severity levels, timestamping, module level filtering and
instance level filtering. It also showcases logging capabilities in terms of
performance.

Building and Running
********************

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

.. zephyr-app-commands::
   :zephyr-app: samples/subsys/logging/logger
   :host-os: unix
   :board: qemu_x86
   :goals: run
   :compact:


Sample Output
=============

.. code-block:: console

         Module logging showcase.
         [00:00:00.000,122] <info> foo: log in test_module 11
         Disabling logging in the foo module
         Function called again but with logging disabled.
         Instance level logging showcase.
         [00:00:00.000,274] <info> sample_instance.inst1: counter_value: 0
         [00:00:00.000,274] <warn> sample_instance.inst1: Example of hexdump:
         [00:00:00.000,305] <warn> sample_instance.inst1:  01 02 03 04            |....
         [00:00:00.000,305] <info> sample_instance.inst2: counter_value: 0
         [00:00:00.000,305] <warn> sample_instance.inst2: Example of hexdump:
         [00:00:00.000,305] <warn> sample_instance.inst2:  01 02 03 04            |....
         Changing filter to warning on sample_instance.inst1 instance.
         [00:00:00.000,396] <warn> sample_instance.inst1: Example of hexdump:
         [00:00:00.000,427] <warn> sample_instance.inst1:  01 02 03 04            |....
         [00:00:00.000,427] <info> sample_instance.inst2: counter_value: 1
         [00:00:00.000,427] <warn> sample_instance.inst2: Example of hexdump:
         [00:00:00.000,427] <warn> sample_instance.inst2:  01 02 03 04            |....
         Disabling logging on both instances.
         Function call on both instances with logging disabled.
         Severity levels showcase.
         [00:00:00.000,610] <err> main: Error message example.
         [00:00:00.000,610] <warn> main: Warning message example.
         [00:00:00.000,610] <info> main: Info message example.
         Logging performance showcase.
         [00:00:00.134,887] <info> main: performance test - log message 0
         [00:00:00.134,887] <info> main: performance test - log message 1
         [00:00:00.134,887] <info> main: performance test - log message 2
         [00:00:00.134,887] <info> main: performance test - log message 3
         [00:00:00.134,887] <info> main: performance test - log message 4
         [00:00:00.134,887] <info> main: performance test - log message 5
         [00:00:00.134,887] <info> main: performance test - log message 6
         [00:00:00.134,918] <info> main: performance test - log message 7
         [00:00:00.134,918] <info> main: performance test - log message 8
         [00:00:00.134,918] <info> main: performance test - log message 9
         [00:00:00.134,918] <info> main: performance test - log message 10
         [00:00:00.134,918] <info> main: performance test - log message 11
         [00:00:00.134,918] <info> main: performance test - log message 12
         [00:00:00.134,918] <info> main: performance test - log message 13
         [00:00:00.134,948] <info> main: performance test - log message 14
         Estimated logging capabilities: 245760 messages/second