Bought directly from you on aliexpress,
order id: 88829386454209
December 31st 2017
Force reset M5 stack
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
lcd all white
Starting as an intermittent issue and now permanently the lcd display is now only showing brightness as output, for example when running the FactoryTest.ino you can see the brightness come up and down for displaying the M5stack logo; but no actual picture output.
Here is what it looks like; as you can see just white.
This is running the FactoryTest.ino
Anyone had this problem or know any fixes?
Hardware is M5 with 4mb psRam