Last week I successfully could connect my STM32F103C8T6 (aka Blue Pill) with Virtual Com Port. My OS is Windows 10, 64 bit.
In the Ports (COM & LPT) section of Device Drivers, COM8 was shown and I could see my print statements (sent over USB) while running the program (after uploading, disconnecting + reconnecting the USB cable and start putty).
Today I wanted to try it with my (also) STM32F103C8T6, but this is a minimal eval board.
When I plugged it in, I get in the device drivers/Universal Serial Bus Controlelrs:
Unknown USB Device (Device Descriptor Request Failed),
And when clicking on details:
Windows has stopped this device becaue it has reported problems (Code 43) A request for the USB device descriptor failed.
Than I check on google and found some (very few resources) to reinstall the Virtual Com Port driver (from ST Electronics).
I did that, but since now on both my STM32s (also the blue pill) I get an Unknown USB Device and the COM8 is not showing up anymore.
I use (USB stick like) ST-Link V2 (not V2.1).
Does anybody know how to see my STM32s in the device manager again (also as COM port)?
Side question (but maybe I should post it as separate question): Is it possible to use two STLinks (to two different STM32 devices) at the same time? (preferably with Virtual Com ports)