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alambe94 / I-CUBE-USBD-Composite

Create STM32 USB Composite devices with ease.
MIT License
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Not working on STM32L5 #7

Closed mrhodel closed 2 years ago

mrhodel commented 2 years ago

The package works great on my STM32F746 Disco board. However, not so much on a Nucleo-L552. The composite USB is configured for CDC+MSC and I ticked the STM32F1_DEVICE option. The L5 doesn't have OTG and won't compile without the F1 selection.

As soon as the USB is enabled, I expect to get a USB interrupt, but nothing. I've stepped through the code and the USB register setup seems okay.

Is there something special about the L5 that needs configuration?

alambe94 commented 2 years ago

In ST examples for L5 I am seeing USBD_Clock_Restore() is called in resume callback which is not there in other families. Other than that, I am not seeing any difference.

mrhodel commented 2 years ago

That was quick ;-), thanks. I've run the L5 with CDC only and MSC only and they both enumerate individually.

I assume that you've run composite on an F1 or similar. Any chance you can try it on an L5?

mrhodel commented 2 years ago

I fixed this issue by adding the following line of code to main.c before calling MX_USB_DEVICE_Init().

HAL_PWREx_EnableVddUSB();

alambe94 commented 2 years ago

Great! I will add this point to L5 trouble shooting.

Thanks