Hello!I suspect it has been already asked, but nevertheless:stm32f411xe.h: #define USB_OTG_DIEPMSK_TXFURM_Pos (8U) #define USB_OTG_DIEPMSK_TXFURM_Msk (0x1UL << USB_OTG_DIEPMSK_TXFURM_Pos) /*!< 0x00000100 */ #define USB_OTG...