[ABANDONED] RTT Viewer Resetting Target

kafolske · Feb 28th 2023, 11:29pm

Sorry for the basic question but I couldn't manage to find an answer already posted or in the documentation.

I have recently started experimenting with RTT as a console debug solution. Whenever I connect with the RTT viewer, my target resets. Is this expected or do I have something misconfigured?

I couldn't find any setting that would force a reset when connecting.

I am using Version 7.82b on an Arm Cortex-M4F MCU.

Thanks,
Keith

SEGGER - Alex · Mar 1st 2023, 10:54am

Hi,

This depends on your particular MCU / device (e.g. Infienon XMC4200...), rather than only the core (e.g. ARM Cortex-M4).
There are MCUs for which J-Link performs a reset as part of the connect.
For example, the Infineon XMC4xxx series devices: wiki.segger.com/XMC4xxx_series#Attach_to_running_application

BR
Alex

kafolske · Mar 7th 2023, 11:29pm

I am using an Ambiq Apollo 3 Blue Plus. I can attach the debugger to a running process when debugging without resetting but the Segger RTT viewer doesn't appear to have settings that allow me to do that.

SEGGER - Fabian · Mar 13th 2023, 12:35pm

Hi,
Connecting to the Apollo 3 devices should not trigger a reset by default,
so connecting with the J-Link RTT Viewer should also not do so.

Could you please
1) tell us what lead you to the conclusion that the device is reset on connect?
2) send us a picture of the Configuration Dialog of the J-Link RTT Viewer?
3) send us J-Link Log file of the RTT Viewer session that presumably resets the device? How to enable:
wiki.segger.com/J-Link_DLL#Enable_J-Link_Log_File

BR
Fabian

[ABANDONED] RTT Viewer Resetting Target

[ABANDONED] RTT Viewer Resetting Target

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