strtt

Segger RTT client using ST-link debugger.

Options:

-v debugLevel where debugLevel from -3 to 4 when -3 is equal to silent output

-ramstart Ram Start address where the program is looking for RTT( hex,dec model supported).

-ramsize ramAmmount where ramAmmount is the range where the program is looking for RTT.

-tcp use tcp connection to st-link gdb server (https://www.st.com/en/development-tools/st-link-server.html)

-ap select the AP number to use (default 0), some devices have multiple APs, for example STM32H5 and STM32H7 need set AP to 1.

Executable

Can be found here.

Using with STM32CubeIDE

Thanks to the -tcp option it is possible to communicate with a target using the RTT channel while debugging in STM32CubeIDE. In debug options "Shared ST-LINK" must be checked.

Using with VSCode and cortex-debug

To share ST-LINK_gdbserver add -t option to serverArgs and start strtt with -tcp.

Internals

Program is using a refactored driver from the openocd project.

Usage example

# in most cases default settings are OK

./strtt

# If you want to connect to RTT while debugging in your IDE share stlink and use tcp

./strtt -ramstart 0x30020000 -tcp

SYSTEMVIEW

One experimental option is to use this program with Segger SystemView using tcp connection. To use it, the program must be built with the SYSVIEW option.

cmake -DSYSVIEW=1 ..

RTT in browser

You can also try to use web browser version:

https://phryniszak.github.io/jstlink/sample_rtt/

https://github.com/phryniszak/jstlink