[SOLVED] Atmel EDBG + JTAG = wrong disassembly (SAMA5D2)

    I have been playing around with a SAMA5D2 Xplained board.

    It seems that if EDBG is re-programmed as Jlink, code disassembly is treated as *big* endian by mistake when using JTAG. This results in 'garbage' instructions.

    SWD works fine (little endian instructions)

    Also when using JTAG I have noticed writing to memory via JTAG is not reliable (sometimes top bit is not set). SWD looks OK.


    P

    Hello,

    Thank you for your inquiry.
    Such an issue is not known to us.
    What software are you using to connect/debug to your target device and what version?
    Could you provide an example project for reproduction purposes for either Ozone or Embedded Studio?
    https://www.segger.com/products/devel…-link-debugger/
    https://www.segger.com/products/devel…mbedded-studio/


    Best regards,

    Nino

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    Hello,

    I noticed the problem with both Eclipse and VisualGDB. Switching to SWD solved the problem in both cases.

    I tried several recent versions of Jlink software and the result was the same - wrong endian instructions are displayed.

    It's not a big problem (SWD works fine). I just thought I would mention it here to inform other ATSAMA5 users...

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