zephyr

History

Bradley Bolen bdc80ebe16 samples: tracing: Add a sample for tracing_user The user tracing backend allows one to implement weak symbols to perform user specific tracing, e.g gpio toggling or spi transactions. This adds a qemu sample that just does a simple printk for each of the traced functions, but could be changed to do whatever function the user desires. Signed-off-by: Bradley Bolen <bbolen@lexmark.com>		2021-09-02 06:54:35 -04:00
..
src	samples: tracing: Add a sample for tracing_user	2021-09-02 06:54:35 -04:00
CMakeLists.txt	samples: tracing: Add a sample for tracing_user	2021-09-02 06:54:35 -04:00
prj_native_posix_ctf.conf
prj_native_posix.conf
prj_sysview.conf	samples: tracing: Extract SystemView configuration into separate file	2020-11-20 12:54:09 -06:00
prj_uart_ctf.conf
prj_uart.conf
prj_usb_ctf.conf	samples: remove USB configuration option	2021-08-03 19:00:12 -04:00
prj_usb.conf	samples: remove USB configuration option	2021-08-03 19:00:12 -04:00
prj_user.conf	samples: tracing: Add a sample for tracing_user	2021-09-02 06:54:35 -04:00
prj.conf
README.txt
sample.yaml	tracing: remove cpu_stats in favor of thread runtime stats	2021-04-16 15:31:24 -04:00

README.txt

Title: Send Tracing Formated Packet To The Host With Supported Backends

Description:

This application can be used to demonstrate the tracing feature. The tracing
formated packet will be sent to the host with the currently supported tracing
backend under tracing generic infrastructure.

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Usage for UART Tracing Backend:

Build a UART-tracing image with:

    cmake -DBOARD=mps2_an521 -DCONF_FILE=prj_uart.conf ..

or:

    cmake -DBOARD=mps2_an521 -DCONF_FILE=prj_uart_ctf.conf ..

After the application has run for a while, check the trace output file.

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Usage for USB Tracing Backend

Build a USB-tracing image with:

    cmake -DBOARD=sam_e70_xplained -DCONF_FILE=prj_usb.conf ..

or:

    cmake -DBOARD=sam_e70_xplained -DCONF_FILE=prj_usb_ctf.conf ..

After the serial console has stable output like this:

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

connect the board's USB port to the host device and
run the trace_capture_usb.py script on the host:

    sudo python3 trace_capture_usb.py -v 0x2FE9 -p 0x100 -o channel0_0

The VID and PID of USB device can be configured, just adjusting it accordingly.

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Usage for POSIX Tracing Backend

Build a POSIX-tracing image with:

    cmake -DBOARD=native_posix -DCONF_FILE=prj_native_posix.conf ..

or:

    cmake -DBOARD=native_posix -DCONF_FILE=prj_native_posix_ctf.conf ..

After the application has run for a while, check the trace output file.