STM32H7 Nucleo: VCP not enumerating

[Traud.Jason]

I have one of the newer STM32H743 Nucleo development boards and I'm having issues getting the VCP enumerating. I know I'll need to add some code to transmit and recieve data, but is there anything that I should need to change with the initialization to get the board to display in Device Manager?

[Khouloud GARSI]

Hi @Traud.Jason​ ,

Please make sure to:

• increase the heap size. Using MDK-ARM IDE for example, the heap size is 0x200 by default which is too low for USB applications.
• call " HAL_PWREx_EnableUSBVoltageDetector(); " after "MX_USB_DEVICE_Init" function.
• JP4 must be closed when using USB OTG FS.

The enumeration process should be done correctly if you respect those points.

Khouloud.