Data transfers functions

Data transfers functions. More...

Functions
uint8_t	USART_ReceiveData8 (USART_TypeDef *USARTx)
	Returns the most recent received data by the USART peripheral.
uint16_t	USART_ReceiveData9 (USART_TypeDef *USARTx)
	Returns the most recent received data by the USART peripheral.
void	USART_SendData8 (USART_TypeDef *USARTx, uint8_t Data)
	Transmits 8 bit data through the USART peripheral.
void	USART_SendData9 (USART_TypeDef *USARTx, uint16_t Data)
	Transmits 9 bit data through the USART peripheral.

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Detailed Description

Data transfers functions.

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                            Data transfers functions
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  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 is similar to 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 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_ReceiveData8()
  or USART_ReceiveData9() functions and returns the RDR buffered value. Whereas a write
	access to the USART_DR can be done using USART_SendData8() or USART_SendData9() 
	functions and stores the written data into TDR buffer.

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Function Documentation

uint8_t USART_ReceiveData8

(

USART_TypeDef *

USARTx

)

Returns the most recent received data by the USART peripheral.

Parameters:

USARTx,:

where x can be 1 to select the specified USART peripheral.

Return values:

The	received data.

Definition at line 376 of file stm8l15x_usart.c.

References USART_struct::DR.

uint16_t USART_ReceiveData9

(

USART_TypeDef *

USARTx

)

Returns the most recent received data by the USART peripheral.

Parameters:

USARTx,:

where x can be 1 to select the specified USART peripheral.

Return values:

The	received data.

Definition at line 386 of file stm8l15x_usart.c.

References USART_struct::CR1, USART_struct::DR, and USART_CR1_R8.

void USART_SendData8	(	USART_TypeDef *	USARTx,
		uint8_t	Data
	)

Transmits 8 bit data through the USART peripheral.

Parameters:

Data,:

The data to transmit.

Return values:

None

Definition at line 399 of file stm8l15x_usart.c.

References USART_struct::DR.

void USART_SendData9	(	USART_TypeDef *	USARTx,
		uint16_t	Data
	)

Transmits 9 bit data through the USART peripheral.

Parameters:

USARTx,:	Select the USARTx peripheral.
Data,:	The data to transmit. This parameter should be lower than 0x1FF.

Return values:

None

Definition at line 412 of file stm8l15x_usart.c.

References USART_struct::CR1, USART_struct::DR, IS_USART_DATA_9BITS, and USART_CR1_T8.