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Graduate
November 16, 2023
Question

J-Link and NUCLEO-U5A5ZJ-Q or STM32U5A9J-DK

  • November 16, 2023
  • 2 replies
  • 1082 views

Does these boards work out of the box with an external debugger like a J-Link Ultra+?  I see they both support a MIPI10 connector (and one supports a tag connector as well) that leads me to believe it supports an external debugger.  However, I can't find any information about connecting these newer boards including jumper configuration changes.  The newer boards with ST-LINK/V3 don't support flashing to JLink-OB.

 

I'm primarily interested in more break points and trying to use advanced features of that debugger.

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    2 replies

    Graduate II
    November 16, 2023

    Check the schematics, under the CAD Resources tab. If you understand the circuit, and the connections or solder bridges it might be come more apparent which pins and connections will be contented for use. The list is going to be pretty short.

    The number of break-points the hardware facilitates is fixed. Modifying flash on-the-fly has it's own issues.

    You can use as many BKPT# as you want. Variable levels of telemetry can tell you a lot about flow dynamics and interactions, in real-time systems this is frequently more desirable than dead-stopping a system, or introducing 100's milliseconds of non-responsiveness.

    I'd like to see Segger offer an OB firmware for the the V3, V3SE implementations, and be willing to pay reasonable money for it.

    Super User
    November 16, 2023

    for U5 nucleo144  board, see user manual:

    AScha3_0-1700162991896.png