Posted on January 14, 2016 at 14:05Hi,
We have had a product released for a little while that has been working well, with a STM32F4 communicating to a PC over virtual com port. We have had some issue recently so I am revisiting this.
The first thing I came across was (running from windows 10 64 bit) I can send bytes, and I get the receive event, but when I go to read the bytes I got ''''error reading comm device'' 8020''
We were using an old vcp driver, 1.3. So I got the new one, 1.4. This does something strange: If I just plug my device in, I get:
Ports(Com & LPT): USB Serial Device(COM4) and it looks ok,
But if I restart my device while the USB is connected, I get:
Other devices: STM32 Virtual Comport in FS Mode
and
Ports(Com & LPT): USB Serial Device(COM5) , both with yellow warning triangle.
(yes, the comport number changed from 4 to 5)
Any clues as to what is happening here? Does vcp work on win 10 64 bit?
#stm32 #usb #stm32f0 #cdc #vcp
