Arduino for STM32

What I don't understand is why the upload method affects the working of the serial port.

I mean: if I upload via serial port using boot0 jumper, the program works ok. But if I ipload the same program but via st-link, the serial port does not work. May be some some prescaller clock settings or ...

I've got 3 bluepill boards.


There is no quality assurance with bluepills . We have reports that some pills are dead-on-arrival and some have faux microcontrollers.

In this case, the chips seems to work but unly when programmed vea st-link but ignores boot0 jumper. It does not look like a ...

When I select BOOT0=1, the blink sketch continues working.
With BOOT0=1, press reset. It should not be blinking. BOOT1 is next to the reset switch, BOOT0 is near B10 and B11.


I dis this. This works OK with one of my 3 blue pills. The other 2 keeps blinking when I change boot0 (and reset ...

When I select BOOT0=1, the blink sketch continues working.


$ ~/.arduino15/packages/stm32duino/tools/stm32tools/2020.3.13/linux/stm32flash/stm32flash -u /dev/ttyUSB0
stm32flash Arduino_STM32_0.9

http://github.com/rogerclarkmelbourne/arduino_stm32

Interface serial_posix: 57600 8E1
Failed to init ...

I've got 3 bluepill boards. One of them works as expected: I place the boot0 jumper to 1 and I can upload via serial.The ASCIITable demo works ok.

But the other 2 boards that I bought can't be programmed via serial. I place the boot0 jumper in "1" position and the led keeps blinking with the ...