Data transfers functions

Data transfers functions. More...

Collaboration diagram for Data transfers functions:

Functions
void	USART_SendData (USART_TypeDef *USARTx, uint16_t Data)
	Transmits single data through the USARTx peripheral. More...
uint16_t	USART_ReceiveData (USART_TypeDef *USARTx)
	Returns the most recent received data by the USARTx peripheral. More...

Detailed Description

Data transfers functions.

 ===============================================================================
                      ##### Data transfers functions #####
 ===============================================================================  
    [..]
    This subsection provides a set of functions allowing to manage the USART data 
    transfers.
    [..]
    During an USART reception, data shifts in least significant bit first through 
    the RX pin. In this mode, the USART_DR register consists of a buffer (RDR) 
    between the internal bus and the received shift register.
    [..]
    When a transmission is taking place, a write instruction to the USART_DR register 
    stores the data in the TDR register and which is copied in the shift register 
    at the end of the current transmission.
    [..]
    The read access of the USART_DR register can be done using the USART_ReceiveData()
    function and returns the RDR buffered value. Whereas a write access to the USART_DR 
    can be done using USART_SendData() function and stores the written data into 
    TDR buffer.

Function Documentation

uint16_t USART_ReceiveData

(

USART_TypeDef *

USARTx

)

Returns the most recent received data by the USARTx peripheral.

Parameters

USARTx

where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.

Return values

The	received data.

Definition at line 573 of file stm32f4xx_usart.c.

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void USART_SendData	(	USART_TypeDef *	USARTx,
		uint16_t	Data
	)

Transmits single data through the USARTx peripheral.

Parameters

USARTx	where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.
Data	the data to transmit.

Return values

None

Definition at line 557 of file stm32f4xx_usart.c.

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