How to I disable the USB on the STM32L4

[SSmit.13]

Hi

 I am using the USB CDC on a STM32L433 with the command MX_USB_DEVICE_Init(); to communicate through the USB. In my app, I go into standby mode (by using the HAL_PWR_EnterSTANDBYMode()) command. How do I disable the USB before entering standby?  I tried the the command USBD_DeInit(&hUsbDeviceFS) , but got a hardware fault. Anyone let me know the best way to disable it?

Best Regards

Scott

[STTwo-32 · Accepted solution]

Hello @SSmit.13 

I suggest you set the USBFSRST High then Low to reset the USB FS and set the USBFSEN Low to disable the USB FS clock.

Best Regards.

STTwo-32

[SSmit.13]

That worked, many thanks

Scott