USART Exported Constants

Modules
	USART Error Definition
	USART Number of Stop Bits
	USART Parity
	USART Mode
	USART Over Sampling
	USART Clock
	USART Clock Polarity
	USART Clock Phase
	USART Last Bit
	USART Request Parameters
	USART Flags
	Elements values convention: 0xXXXX.
	USART Interrupts Definition
	Elements values convention: 0000ZZZZ0XXYYYYYb.
	USART Interruption Clear Flags
	USART Interruption Flags Mask