I think I may be confused or missing something. Why use usb on blue pill. Like I have always used stlink or ftdi ? to program with . If using usb to communicate with could you not just cut the 5v trace on the board from the usb . ?I have been playing with the blue pill today trying it with cec ?firmware and run into errors with EEPROM ?and get. I have been reading of problems of this. I see that this is being worked on by STM, now whether it has been fixed I have not had time to check this out. The EEPROM ?routine Ian uses ?is very good I see it is being used in the new OEM firmware I have been reading about. Their have always been some quirks using STM processors on Arduino. Mxcube ?or attalis ?may be better option for programming.
Now this is just a thought for going with STM for my programming ability (or disability ) I will probably ?have to go with mega 2560 mini. I have had no problem getting ?Ian's ?firmware to compile on it. I like the STM idea but , hell, I'm ?almost 70, I don't ?need complication.
73's ?kn4ud
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Allen ?Merrell
