STM32F103 USB bulk

[mhannachi]

Hello,

I'm working on a project based on stm32f103 (nucleo-64). I would like to exchange the data between the stm32f103 board and my PC using usb device. With COMx port the code works but the speed is slow, so I did some modifications to switch to bulk mode ! I changed usbd_desc.c and usbd_cdc.c as described after, but the WIN-10 can't detect the USB driver ! Please, if semeone encountered the same problem and can help me ! Thanks for your time.

Best regards

[Imen.D]

Hello @mhannachi​,

Welcome to the Community ��

I advise you to follow this article USB device not recognized, it may help you on this issue.

 Please keep me informed about your progress on this.

Imen

[mhannachi]

Hello @Imen,

Thanks for your response. I changed the minimum heap size as depicted in fig below, but the problem still persists.

In your opinion: the problem will not come from the signature of usb driver on win-10 ? I don't know what exactly windows does when device descriptor change ! 

Best regards