USART Exported Constants

Modules
	Get Flags Defines
	Flags defines which can be used with LL_USART_ReadReg function.
	IT Defines
	IT defines which can be used with LL_USART_ReadReg and LL_USART_WriteReg functions.
	Communication Direction
	Parity Control
	Wakeup
	Datawidth
	Oversampling
	Clock Signal
	Last Clock Pulse
	Clock Phase
	Clock Polarity
	Stop Bits
	Hardware Control
	IrDA Power
	LIN Break Detection Length