ST STM32F31xx

Universal synchronous asynchronous receiver
transmitter (USART)
UM1581
544/584
DocID023800 Rev 1
The receiver set up time should be managed by software. The IrDA physical layer
specification specifies a minimum of 10 ms delay between transmission and
reception (IrDA is a half duplex protocol).
In IrDA mode, the following bits must be kept cleared:
 LINEN, STOP and CLKEN bits in the USART_CR2 register.
 SCEN and HDSEL bits in the USART_CR3 register.
 USART_IrDAConfig()
 USART_IrDACmd()
23.2.14 Initialization and Configuration functions
23.2.14.1 USART_DeInit
Function Name
void USART_DeInit ( USART_TypeDef * USARTx)
Function Description
Deinitializes the USARTx peripheral registers to their default reset
values.
Parameters
 USARTx : Select the USART peripheral. This parameter can
be one of the following values: USART1 or USART2 or
USART3 or UART4 or UART5.
Return values
 None.
Notes
 None.
23.2.14.2 USART_Init
Function Name
void USART_Init ( USART_TypeDef * USARTx,
USART_InitTypeDef * USART_InitStruct)
Function Description
Initializes the USARTx peripheral according to the specified
parameters in the USART_InitStruct .
Parameters
 USARTx : Select the USART peripheral. This parameter can
be one of the following values: USART1 or USART2 or
USART3 or UART4 or UART5.
 USART_InitStruct : pointer to a USART_InitTypeDef
structure that contains the configuration information for the
specified USART peripheral.
Return values
 None.