USART Exported Functions

Modules
	Configuration functions
	Configuration functions related to Irda feature
	Configuration functions related to Smartcard feature
	Configuration functions related to Half Duplex feature
	Configuration functions related to SPI Slave feature
	Configuration functions related to LIN feature
	Configuration functions related to Driver Enable feature
	Advanced Configurations services
	FLAG_Management
	IT_Management
	DMA_Management
	Data_Management
	Execution
	Initialization and de-initialization functions