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mete
mete
Senior
November 10, 2020
Solved

how to enable ETM Trace

  • November 10, 2020
  • 2 replies
  • 3345 views

Hello,

I am using STM32F4 (nucleo F439ZI), so Cortex-M4. I am trying to enable ETM tracing and see something on TRACE pins, I am using STLINK for SWD and observing TRACE pins with an oscilloscope. I enable the trace pins on pin configuration, and enable -I think- trace related things in debug regs and then tried various things with ETM regs but I cannot see any output from TRACE pins. Is there any hint or a guide to do this ?

Thanks.

Mete

This topic has been closed for replies.
Best answer by mete

I realized even if I select trace output for GPIOs in STM32CubeMX configuration, the pins were not initialized as such in the autogenerated code. So initializing them manually solved the isse.

2 replies

Tesla DeLorean
Tesla DeLorean
Guru
November 10, 2020

The register configuration is shown here, may have other debugger side dependencies. Probably want the technical materials from ARM for debugger writers.

https://community.st.com/s/question/0D50X0000BIzlEKSQZ/i-have-trouble-getting-etm-instruction-trace-out-of-stm32f411ve

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mete
meteAuthorBest answer
Senior
November 13, 2020

I realized even if I select trace output for GPIOs in STM32CubeMX configuration, the pins were not initialized as such in the autogenerated code. So initializing them manually solved the isse.

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