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STM32L452 usb support in IDE generation?

fred bar
Senior

Hi.

I am trying to add usb CDC to a project for the STM32L452 mcu. Project can be created, compiled without problem.

I did a test with a simple and non-modified project that just had the usb added. To my despair, machines do not see the device and no enumeration take place. It is as just as if nothing was moving on. Checking with oscilloscope confirms that no level changes, at any time.

IDE and cubeMX do not support the L452RE board, so i cannot confirm with a reference design.

I did check the USB Device application source code that is in the SDK and it is a very different structure than what the IDE generates. I however do believe that lots are missing in the generated project when compared with the example. (cdc baudrate config, I.E cannot be found in the generated one.)

Is there a place where i can find information about validated usb support on the generation of project, or better, has anyone succeeded on generating a basic but working USB CDC app from it?

Thanks.

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