ST STM32F31xx User Manual

Universal synchronous asynchronous receiver
transmitter (USART)
UM1581
548/584
DocID023800 Rev 1
23.2.14.10 USART_MSBFirstCmd
Function Name
void USART_MSBFirstCmd ( USART_TypeDef * USARTx,
FunctionalState NewState)
Function Description
Enables or disables the USART's most significant bit first
transmitted/received following the start bit.
Parameters
 USARTx : Select the USART peripheral. This parameter can
be one of the following values: USART1 or USART2 or
USART3 or UART4 or UART5.
 NewState : new state of the USART most significant bit first
transmitted/received following the start bit. This parameter
can be: ENABLE or DISABLE.
Return values
 None.
Notes
 This function has to be called before calling USART_Cmd()
function.
23.2.14.11 USART_DataInvCmd
Function Name
void USART_DataInvCmd ( USART_TypeDef * USARTx,
FunctionalState NewState)
Function Description
Enables or disables the binary data inversion.
Parameters
 USARTx : Select the USART peripheral. This parameter can
be one of the following values: USART1 or USART2 or
USART3 or UART4 or UART5.
 NewState : new defined levels for the USART data. This
parameter can be: ENABLE or DISABLE.
 ENABLE : Logical data from the data register are
send/received in negative logic. (1=L, 0=H). The parity
bit is also inverted.
 DISABLE : Logical data from the data register are
send/received in positive logic. (1=H, 0=L)
Return values
 None.
Notes
 This function has to be called before calling USART_Cmd()
function.

ST STM32F31xx Specifications

General

Brand	ST
Model	STM32F31xx
Category	Microcontrollers
Language	English