STM32 Mini M4 and USB Virtual Com Port

[alexm37]

Hi,

I have used the USB CDC Library for the virtual COM-Port successfully in the past using the STM32F107.

Now I would like to use it with the Mini M4 Board (STM32F415RG) but I can't get it working. I also tried to use just the example from the library, changed only "edit project" to STM32F415RG_HSE_PLL Scheme and set the PLL Q-divider to 7 to get a 48 MHz USB Clock. No way...
Windows device manager says unknown USB device, error when requesting device description. The c code stopps at this position:
while(USBDev_GetDeviceState() != _USB_DEV_STATE_CONFIGURED) ;

However the same example code is working with the STM32F103. I don't know why. Any ideas? Thanks,Alex

[filip]

Hi,

Which version of the compiler are you using ?

Regards,
Filip.

[alexm37]

Hi,

Which version of the compiler are you using ?

Regards,
Filip.

Hi Filip,

always the latest one... V 6.2.0

Alex