j-trace support for STM32U5G9

    Greetings!

    I'm trying to get 4 pin hw trace running for a custom stm32U5G9 board with the following setup:
    J-Trace Pro Cortex-M
    Ozone v3.38c
    processor clock = 160 MHz
    Target Interface SWD: 4 MHz
    TCLK = PE2, TD0 = PE3, TD1 = PE4, TD2 = PE5, TD3 = PE6
    attached JLinkScript

    I am able to build, load and run my project without specifying the JLinkScript and with Trace Source set to None.
    I am still able to load and run with the JLinkScript specified.
    When I add Trace Source to Trace Pins, Trace Port Width 4 bit, I get a "Target Connection Lost" message after the compare step of flash download.

    Has anyone used hw trace with an STM32U5 processor? Any suggestions of what to look at or what I might be missing?

    Thanks,
    -Rob

    Hello,

    Thank you for your inquiry.
    You can find an example project for the STM32U575 EVAL Board here:
    https://kb.segger.com/ST_STM32U5#Tracing_on_ST_STM32U5

    So generally that should be working on custom boards as well, you might just need to adapt the trace pin init.

    Best regards,
    Nino

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