Arduino for STM32

Hey ag123 I got to test some bluepills from different vendor + FTDI chip USB to serial converter (took a bit of time with all delays).
Remind you I was trying to use an old ARDUINO USB to Serial converter to program STM32 (on macOS Mojave).
Flashing code on bluepill through FTDI USB to serial ...

thanks a lot ag123, i will dig into each and every point you suggested and keep you posted.
Easiest thing to check first was the 3V3.
Indeed the ARDUINO USB 2 serial is a 5V device

thanks Steve.
the issue might be I am trying to use Atmega8u2 on the usb2serial converter to program the STM32. Apparently majority of people is doing it with FTDI. I will try to understand root causes and keep you posted.

Hi Ray thanks for your reply!
I maybe did not explain clear enough, sorry.
I am not trying to use an ARDUINO UNO board as a converter.
I would like to use the ARDUINO USB 2 serial converter which I had purchased to program an ARDUINO ETHERNET board while ago.
Mine is the previous version of ...

Dear everybody,

I am trying to program through ARDUINO IDE 1.8.12 a STM32F103C8T6 using the ARDUINO USB to serial convert on a MacBook pro, but I am not having success.

The error message is:

Failed to init device.
stm32flash Arduino_STM32_0.9

http://github.com/rogerclarkmelbourne/arduino ...