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MMast.11
Graduate
November 20, 2023
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Suggestion about (broken) F746ZG Nucelo Board

  • November 20, 2023
  • 3 replies
  • 1552 views

Good Morning,
I am the proud possessor of a Nucelo 746ZG board that has served me well since it has been given to me.
Unfortunately for ther last week the Nucleo has a text file with inside the string "The interface firmware FAILED to reset/halt the target MCU", the red led LD5 is on (over-current allarm, according to the manual) and there neither way to copy a file on it nor to make the CUBE program connect to it (long story short: if anything does not come on, I have smoked it).

I really like this type of board, with support for ADC/DAC/PWM and that have the possiblity to use Ethernet/USB Host and a lot of perypherals. But from the 2019 I believe the World has probably keep evolving and so there could be more interesting board which can replace my loved one. ST sent me a mail informing there are sales until 24/11.
What could be an interesting board to substitute the F746ZG one with?

Thank you a lot for your time and your suggestions,
Marco M.

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

    > the red led LD5 is on

    Sounds dead to me. Probably an ESD or similar event.

    > What could be an interesting board to substitute the F746ZG one with?

    Nucleo boards are pretty similar. The logical step up might be the H7 or H5. Both can do what you're asking (as can a lot of other families).

    The H7 is popular, has the same core as the F7, lots of examples are there. I'd probably go with something from that series.

    https://www.st.com/en/evaluation-tools/nucleo-h723zg.html

    https://www.st.com/en/evaluation-tools/nucleo-h743zi.html

     

    3 replies

    T
    TDKAnswer
    Super User
    November 21, 2023

    > the red led LD5 is on

    Sounds dead to me. Probably an ESD or similar event.

    > What could be an interesting board to substitute the F746ZG one with?

    Nucleo boards are pretty similar. The logical step up might be the H7 or H5. Both can do what you're asking (as can a lot of other families).

    The H7 is popular, has the same core as the F7, lots of examples are there. I'd probably go with something from that series.

    https://www.st.com/en/evaluation-tools/nucleo-h723zg.html

    https://www.st.com/en/evaluation-tools/nucleo-h743zi.html

     

      M
      MMast.11Author
      Graduate
      November 22, 2023

      It stopped working after I upgraded the firmware, so I believe that something got wrong there.

      It seems that the H473Zi is a bit more capable and has more peripherals for multimedia (the only think I couldn't do with my Nucleo was to output a working video signal, it would be really nice to retry to do it with this one).
      Thank you

      T
      TDK
      Super User
      November 22, 2023

      It's hard to brick the board with firmware. If you hold it in reset (ground NRST pin), does it still show overcurrent? If not, you can probably connect under reset and program it.

        M
        MMast.11Author
        Graduate
        November 22, 2023

        Yes, it still shows with NRST pin groundend. I must have done something dumb without realizing it.
        I am getting this H473ZI and I will watch out more carefully next time.

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