• Depending on boards we use some ports cause a shutdown after setting mode for pin, like D16.mode("output").
    Testing was done to check speed of different solutions for LED-Matrix(32x64).
    Started with a board from Watterott, everything worked fine.
    Switching to another board reset with same configuration.
    Problem could be drilled down to usage of IO16 and IO17.
    D16.mode("output") and I've got a reset.
    Most boards don't have pins for IO16 and IO17, so be careful, not to use them accidently


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