STM32L4 USBD CDC-MSC Combination Device Class CDCtransmit-FS() Sending Issue
The STM32USB library calls the function CDC TransmitFS, which can only be sent in the CDC ReceiveFS loop and data in the main. The cdc ->TxState flag has always been 1, so only the USBD_cDC SetTxBuffer was successfully called. However, the USBD_cDC T...