Receiving data over USB com port
I have created a project using STMCubeMX which includes a usbd driver configured as a virtual com port. I have it working and can receive data via the CDC_Receive_FS callback function. My question is how is this callback called. Is it done at interrupt level, or is there some other mechanism. In particular, if I want to copy the data from the callback buffer into a queue which will be read by my main code, do I need some protection for concurrency (e.g. disable interrupts)?
Thanks.
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