SAMD21 is not responding to upload code

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  • May 18, 2020 at 10:24 PM #15421
    stephane.driussi
    Participant

    Hello,

    I have 4 Mini Ultra Pro, 2 in revision 20 and 2 in revision 50

    One of the revision 50 is working well, the other not after the last upload. I’m trying to return to the previous code or just download the blink demo code but the Arduino said that No device is found, then on the serial monitor I see the debug messages of my firmware (so the serial is working)

    How to program a SAMD21 to factory firmware ?

    Regards
    Stéphane

    May 18, 2020 at 11:01 PM #15424
    LIM PHANG MOH
    Keymaster

    Hi Stephane,

    After you press upload, double tap the reset button in quick succession.
    That will force the MCU to go into bootloader mode.

    May 18, 2020 at 11:22 PM #15426
    stephane.driussi
    Participant

    oh yes it’s working again !
    Thanks

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