Real Time Terminal (SEGGER RTT), can send real time messages to the host system even while debugging.
To see the messages on host, JLinkRTTViewer can be used.
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STM32F767 NUCLEO-144 Development Board
ST-Link should be upgraded to run as JLink. -
JLinkRTTViewer
This application can be used on Host to see the incoming messages from Jlink.
When application starts running Blue LED will start blinking each 500 ms.
Red LED will be toggled after user's each press on button.
"Hello from STM32 Nucleo -> Segger_RTT\r\n" message will be seen on JLinkRTTViewer each 500 ms.
Note: Project is developped with CubeIDE.