Force reset M5 stack
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After inadvertently uploading a sketch that outputs to wrong pin numbers one of our M5 stacks has become un-uploadable. That is whenever it's given power the speaker emits loud continuous buzzing and the hardware won't show up as a serial port.
Is there anyway to force hardware into an uploadable state and reset.
Hardware is original M5 stack without 4mb psram
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@keptan
We managed to fix it
simply holding down button A and reset button until Arduino ide attempted to connect
then releasing it and allowing it to upload without a chance for the old code to run