LL_USART_EnableDMAReq_RX() function

USART Instance

Write in Transmitter Data Register (Transmit Data value, 8 bits)

USART Enable

Configure USART BRR register for achieving expected Baud Rate value.

Configure simultaneously enabled/disabled states of Transmitter and Receiver CR1 TE LL_USART_SetTransferDirection

Configure Character frame format (Datawidth, Parity control, Stop Bits)

Check if the USART Read Data Register Not Empty Flag is set or not

Enable RX Not Empty Interrupt

Enable Error Interrupt

Check if the USART RX Not Empty Interrupt is enabled or disabled.

Read Receiver Data register (Receive Data value, 8 bits)

Check if the USART Transmission Complete Flag is set or not

Check if the USART Transmit Data Register Empty Flag is set or not

Check if the USART Noise error detected Flag is set or not

Check if the USART Error Interrupt is enabled or disabled.

Clear Transmission Complete Flag

Disable Transmission Complete Interrupt

Check if the USART TX Empty Interrupt is enabled or disabled.

Enable Transmission Complete Interrupt

Enable TX Empty Interrupt

Disable TX Empty Interrupt

Check if the USART Transmission Complete Interrupt is enabled or disabled.

Get the data register address used for DMA transfer

Set Oversampling to 8-bit or 16-bit mode

Indicate if USART is enabled

Configure HW Flow Control mode (both CTS and RTS)

Perform basic configuration of USART for enabling use in Synchronous Mode

Configure Clock signal format (Phase Polarity and choice about output of last bit clock pulse)

Clear Noise detected Flag

Disable RX Not Empty Interrupt

Enable DMA Mode for transmission

Initialize USART registers according to the specified parameters in USART_InitStruct.

Disable Clock output on SCLK pin

Set the length of the stop bits

Clear OverRun Error Flag

De-initialize USART registers (Registers restored to their default values).

Initialize USART Clock related settings according to the specified parameters in the USART_ClockInitStruct.

USART Disable (all USART prescalers and outputs are disabled)

Return enabled/disabled states of Transmitter and Receiver CR1 TE LL_USART_GetTransferDirection

Configure Parity (enabled/disabled and parity mode if enabled).

Return Parity configuration (enabled/disabled and parity mode if enabled) CR1 PCE LL_USART_GetParity

Set Receiver Wake Up method from Mute mode.

Return Receiver Wake Up method from Mute mode

Set Word length (i.e. nb of data bits, excluding start and stop bits)

Return Word length (i.e. nb of data bits, excluding start and stop bits)

Return Oversampling mode

Configure if Clock pulse of the last data bit is output to the SCLK pin or not

Enable Clock output on SCLK pin

Indicate if Clock output on SCLK pin is enabled

Retrieve the length of the stop bits

Receiver Enable (Receiver is enabled and begins searching for a start bit)

Receiver Disable

Transmitter Enable

Transmitter Disable

Set Address of the USART node.

Return 4 bit Address of the USART node as set in ADD field of CR2.

Enable RTS HW Flow Control

Disable RTS HW Flow Control

Enable CTS HW Flow Control

Disable CTS HW Flow Control

Enable LIN mode

Disable LIN mode

Indicate if LIN mode is enabled

Perform basic configuration of USART for enabling use in Asynchronous Mode (UART)

Perform basic configuration of USART for enabling use in LIN Mode

Retrieve Clock pulse of the last data bit output configuration (Last bit Clock pulse output to the SCLK pin or not)

Select the phase of the clock output on the SCLK pin in synchronous mode

Return phase of the clock output on the SCLK pin in synchronous mode

Select the polarity of the clock output on the SCLK pin in synchronous mode

Return polarity of the clock output on the SCLK pin in synchronous mode

Return HW Flow Control configuration (both CTS and RTS)

Enable One bit sampling method

Disable One bit sampling method

Indicate if One bit sampling method is enabled

Return current Baud Rate value, according to USARTDIV present in BRR register (full BRR content), and to used Peripheral Clock and Oversampling mode values

Enable IrDA mode

Disable IrDA mode

Indicate if IrDA mode is enabled

Configure IrDA Power Mode (Normal or Low Power)

Retrieve IrDA Power Mode configuration (Normal or Low Power)

Set Irda prescaler value, used for dividing the USART clock source to achieve the Irda Low Power frequency (8 bits value)

Return Irda prescaler value, used for dividing the USART clock source to achieve the Irda Low Power frequency (8 bits value)

Enable Smartcard NACK transmission

Disable Smartcard NACK transmission

Indicate if Smartcard NACK transmission is enabled

Enable Smartcard mode

Disable Smartcard mode

Indicate if Smartcard mode is enabled

Set Smartcard prescaler value, used for dividing the USART clock source to provide the SMARTCARD Clock (5 bits value)

Return Smartcard prescaler value, used for dividing the USART clock source to provide the SMARTCARD Clock (5 bits value)

Set Smartcard Guard time value, expressed in nb of baud clocks periods (GT[7:0] bits : Guard time value)

Return Smartcard Guard time value, expressed in nb of baud clocks periods (GT[7:0] bits : Guard time value)

Enable Single Wire Half-Duplex mode

Disable Single Wire Half-Duplex mode

Indicate if Single Wire Half-Duplex mode is enabled

Set LIN Break Detection Length

Return LIN Break Detection Length

Perform basic configuration of USART for enabling use in Multi processor Mode (several USARTs connected in a network, one of the USARTs can be the master, its TX output connected to the RX inputs of the other slaves USARTs).

Check if the USART Parity Error Flag is set or not

Check if the USART Framing Error Flag is set or not

Check if the USART OverRun Error Flag is set or not

Check if the USART IDLE line detected Flag is set or not

Check if the USART Parity Error Interrupt is enabled or disabled.

Check if the USART LIN Break Detection Interrupt is enabled or disabled.

Check if the USART CTS Interrupt is enabled or disabled.

Check if the USART LIN Break Detection Flag is set or not

Check if the USART CTS Flag is set or not

Check if the USART Send Break Flag is set or not

Check if the USART Receive Wake Up from mute mode Flag is set or not

Perform basic configuration of USART for enabling use in Half Duplex Mode

Perform basic configuration of USART for enabling use in Smartcard Mode

Perform basic configuration of USART for enabling use in Irda Mode

Clear Parity Error Flag

Clear Framing Error Flag

Clear IDLE line detected Flag

Clear RX Not Empty Flag

Clear LIN Break Detection Flag

Clear CTS Interrupt Flag

Enable IDLE Interrupt

Enable Parity Error Interrupt

Enable LIN Break Detection Interrupt

Enable CTS Interrupt

Disable IDLE Interrupt

Disable Parity Error Interrupt

Disable LIN Break Detection Interrupt

Disable Error Interrupt

Disable CTS Interrupt

Check if the USART IDLE Interrupt source is enabled or disabled.

Disable DMA Mode for reception

Check if DMA Mode is enabled for reception

Disable DMA Mode for transmission

Check if DMA Mode is enabled for transmission

Read Receiver Data register (Receive Data value, 9 bits)

Write in Transmitter Data Register (Transmit Data value, 9 bits)

Request Break sending

Put USART in Mute mode

Put USART in Active mode