[SOLVED] Trace HW not present - ARM cortex M4

satheesh · Jan 23rd 2020, 11:27am

Hi,

I am working on ARM Cortex M4 development board provided by Vorago technologies. I am using keil IDE with Jlink/J-trace Cortex. When I enable the "Trace"(look in attachement for settings), the debugging session is getting terminated with an error "Trace HW not present" followed by "Error: Target DLL has been cancelled. Debugger Aborted!". Also, find the j-link log file in the attachment

SEGGER - Nino · Jan 30th 2020, 11:51am

Hello,

Thank you for your inquiry
According to the log you are connecting to the target via a J-Link OB. They usually have no trace capabilities.
Try using an external J-Link or J-Trace PRO if you are looking to use trace features.

Best regards,
Nino

satheesh · Feb 2nd 2020, 8:55pm

Hi Nino,

Thank you for the solution.
Will the external J-*link or J-trace PRO be helpful to get trace features even if the Cortex-M4F does not have ITM, DWT and TPIU ports?

Regards,
Satheesh

SEGGER - Nino · Feb 3rd 2020, 2:53pm

Hello Satheesh,

If you are looking to use hardware assisted tracing, that hardware features obviously must be available on the target device. If they are not available you can't use the features, not matter which debug probe you use.

But what will always work is trace features implemented with software e.g. printf debugging.
A general overview of trace types can be found here:
wiki.segger.com/General_information_about_tracing

Best regards,
Nino

[SOLVED] Trace HW not present - ARM cortex M4

[SOLVED] Trace HW not present - ARM cortex M4

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