How can a L4 be at the same time a USB host and a USB device ?

BEnge.1 · ‎2022-06-08

Hello,

I have a STM32L4 and I need it:

To be able to communicate with a laptop via USB (PC = Host, L4 = Device)
To be able to communicate with a custom made USB device which only support being a USB Device (L4 = Host, Custom device = Device)

I managed to use both the USB Host library and USB Device library separately but I don't know how to make them coexist in order to use them a the same time. As the L4 supports USB-OTG I guess this should be possible but I don't know how to do it. Is there a library for that ?

Thanks,

Benjamin

KDJEM.1 · ‎2022-06-17

Hi @BEnge.1 ,

A similar question is asked here.

As confirmed by @Walid ZRELLI , we do not provide an example that uses the USB device and host in the same code.

Otherwise, it is probably possible by using the deinit and init usb functions.

Kaouthar

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