--- block/USART: description: Universal synchronous asynchronous receiver transmitter items: - name: CR1 description: Control register 1 byte_offset: 0 fieldset: CR1 - name: CR2 description: Control register 2 byte_offset: 4 fieldset: CR2 - name: CR3 description: Control register 3 byte_offset: 8 fieldset: CR3 - name: BRR description: Baud rate register byte_offset: 12 fieldset: BRR - name: GTPR description: Guard time and prescaler register byte_offset: 16 fieldset: GTPR - name: RTOR description: Receiver timeout register byte_offset: 20 fieldset: RTOR - name: RQR description: Request register byte_offset: 24 access: Write fieldset: RQR - name: ISR description: Interrupt & status register byte_offset: 28 access: Read fieldset: ISR - name: ICR description: Interrupt flag clear register byte_offset: 32 access: Write fieldset: ICR - name: RDR description: Receive data register byte_offset: 36 access: Read fieldset: DR - name: TDR description: Transmit data register byte_offset: 40 access: Write fieldset: DR fieldset/BRR: description: Baud rate register fields: - name: BRR description: mantissa of USARTDIV bit_offset: 0 bit_size: 16 fieldset/CR1: description: Control register 1 fields: - name: UE description: USART enable bit_offset: 0 bit_size: 1 - name: UESM description: USART enable in Stop mode bit_offset: 1 bit_size: 1 - name: RE description: Receiver enable bit_offset: 2 bit_size: 1 - name: TE description: Transmitter enable bit_offset: 3 bit_size: 1 - name: IDLEIE description: IDLE interrupt enable bit_offset: 4 bit_size: 1 - name: RXNEIE description: RXNE interrupt enable bit_offset: 5 bit_size: 1 - name: TCIE description: Transmission complete interrupt enable bit_offset: 6 bit_size: 1 - name: TXEIE description: TXE interrupt enable bit_offset: 7 bit_size: 1 - name: PEIE description: PE interrupt enable bit_offset: 8 bit_size: 1 - name: PS description: Parity selection bit_offset: 9 bit_size: 1 enum: PS - name: PCE description: Parity control enable bit_offset: 10 bit_size: 1 - name: WAKE description: Receiver wakeup method bit_offset: 11 bit_size: 1 enum: WAKE - name: M0 description: Word length bit_offset: 12 bit_size: 1 enum: M0 - name: MME description: Mute mode enable bit_offset: 13 bit_size: 1 - name: CMIE description: Character match interrupt enable bit_offset: 14 bit_size: 1 - name: OVER description: Oversampling mode bit_offset: 15 bit_size: 1 array: len: 1 stride: 0 enum: OVER - name: DEDT description: Driver Enable deassertion time bit_offset: 16 bit_size: 5 - name: DEAT description: Driver Enable assertion time bit_offset: 21 bit_size: 5 - name: RTOIE description: Receiver timeout interrupt enable bit_offset: 26 bit_size: 1 - name: EOBIE description: End of Block interrupt enable bit_offset: 27 bit_size: 1 - name: M1 description: Word length bit_offset: 28 bit_size: 1 enum: M1 fieldset/CR2: description: Control register 2 fields: - name: ADDM description: 7-bit Address Detection/4-bit Address Detection bit_offset: 4 bit_size: 1 array: len: 1 stride: 0 enum: ADDM - name: LBDL description: Line break detection length bit_offset: 5 bit_size: 1 enum: LBDL - name: LBDIE description: LIN break detection interrupt enable bit_offset: 6 bit_size: 1 - name: LBCL description: Last bit clock pulse bit_offset: 8 bit_size: 1 - name: CPHA description: Clock phase bit_offset: 9 bit_size: 1 enum: CPHA - name: CPOL description: Clock polarity bit_offset: 10 bit_size: 1 enum: CPOL - name: CLKEN description: Clock enable bit_offset: 11 bit_size: 1 - name: STOP description: STOP bits bit_offset: 12 bit_size: 2 enum: STOP - name: LINEN description: LIN mode enable bit_offset: 14 bit_size: 1 - name: SWAP description: Swap TX/RX pins bit_offset: 15 bit_size: 1 - name: RXINV description: RX pin active level inversion bit_offset: 16 bit_size: 1 - name: TXINV description: TX pin active level inversion bit_offset: 17 bit_size: 1 - name: DATAINV description: Binary data inversion bit_offset: 18 bit_size: 1 - name: MSBFIRST description: Most significant bit first bit_offset: 19 bit_size: 1 enum: MSBFIRST - name: ABREN description: Auto baud rate enable bit_offset: 20 bit_size: 1 - name: ABRMOD description: Auto baud rate mode bit_offset: 21 bit_size: 2 enum: ABRMOD - name: RTOEN description: Receiver timeout enable bit_offset: 23 bit_size: 1 - name: ADD description: Address of the USART node bit_offset: 24 bit_size: 8 fieldset/CR3: description: Control register 3 fields: - name: EIE description: Error interrupt enable bit_offset: 0 bit_size: 1 - name: IREN description: IrDA mode enable bit_offset: 1 bit_size: 1 - name: IRLP description: IrDA low-power bit_offset: 2 bit_size: 1 enum: IRLP - name: HDSEL description: Half-duplex selection bit_offset: 3 bit_size: 1 - name: NACK description: Smartcard NACK enable bit_offset: 4 bit_size: 1 - name: SCEN description: Smartcard mode enable bit_offset: 5 bit_size: 1 - name: DMAR description: DMA enable receiver bit_offset: 6 bit_size: 1 - name: DMAT description: DMA enable transmitter bit_offset: 7 bit_size: 1 - name: RTSE description: RTS enable bit_offset: 8 bit_size: 1 - name: CTSE description: CTS enable bit_offset: 9 bit_size: 1 - name: CTSIE description: CTS interrupt enable bit_offset: 10 bit_size: 1 - name: ONEBIT description: One sample bit method enable bit_offset: 11 bit_size: 1 enum: ONEBIT - name: OVRDIS description: Overrun Disable bit_offset: 12 bit_size: 1 - name: DDRE description: DMA Disable on Reception Error bit_offset: 13 bit_size: 1 - name: DEM description: Driver enable mode bit_offset: 14 bit_size: 1 - name: DEP description: Driver enable polarity selection bit_offset: 15 bit_size: 1 enum: DEP - name: SCARCNT description: Smartcard auto-retry count bit_offset: 17 bit_size: 3 - name: WUS description: Wakeup from Stop mode interrupt flag selection bit_offset: 20 bit_size: 2 enum: WUS - name: WUFIE description: Wakeup from Stop mode interrupt enable bit_offset: 22 bit_size: 1 fieldset/DR: description: Data register fields: - name: DR description: Data value bit_offset: 0 bit_size: 9 fieldset/GTPR: description: Guard time and prescaler register fields: - name: PSC description: Prescaler value bit_offset: 0 bit_size: 8 - name: GT description: Guard time value bit_offset: 8 bit_size: 8 fieldset/ISR: description: Interrupt & status register fields: - name: PE description: Parity error bit_offset: 0 bit_size: 1 - name: FE description: Framing error bit_offset: 1 bit_size: 1 - name: NE description: Noise error flag bit_offset: 2 bit_size: 1 - name: ORE description: Overrun error bit_offset: 3 bit_size: 1 - name: IDLE description: Idle line detected bit_offset: 4 bit_size: 1 - name: RXNE description: Read data register not empty bit_offset: 5 bit_size: 1 - name: TC description: Transmission complete bit_offset: 6 bit_size: 1 - name: TXE description: Transmit data register empty bit_offset: 7 bit_size: 1 - name: LBD description: LIN break detection flag bit_offset: 8 bit_size: 1 - name: CTSIF description: CTS interrupt flag bit_offset: 9 bit_size: 1 - name: CTS description: CTS flag bit_offset: 10 bit_size: 1 - name: RTOF description: Receiver timeout bit_offset: 11 bit_size: 1 - name: EOBF description: End of block flag bit_offset: 12 bit_size: 1 - name: ABRE description: Auto baud rate error bit_offset: 14 bit_size: 1 - name: ABRF description: Auto baud rate flag bit_offset: 15 bit_size: 1 - name: BUSY description: Busy flag bit_offset: 16 bit_size: 1 - name: CMF description: character match flag bit_offset: 17 bit_size: 1 - name: SBKF description: Send break flag bit_offset: 18 bit_size: 1 - name: RWU description: Receiver wakeup from Mute mode bit_offset: 19 bit_size: 1 enum: RWU - name: WUF description: Wakeup from Stop mode flag bit_offset: 20 bit_size: 1 - name: TEACK description: Transmit enable acknowledge flag bit_offset: 21 bit_size: 1 - name: REACK description: Receive enable acknowledge flag bit_offset: 22 bit_size: 1 fieldset/ICR: description: Interrupt flag clear register fields: - name: PE description: Parity error clear flag bit_offset: 0 bit_size: 1 - name: FE description: Framing error clear flag bit_offset: 1 bit_size: 1 - name: NE description: Noise error clear flag bit_offset: 2 bit_size: 1 - name: ORE description: Overrun error clear flag bit_offset: 3 bit_size: 1 - name: IDLE description: Idle line detected clear flag bit_offset: 4 bit_size: 1 - name: TC description: Transmission complete clear flag bit_offset: 6 bit_size: 1 - name: LBD description: LIN break detection clear flag bit_offset: 8 bit_size: 1 - name: CTS description: CTS clear flag bit_offset: 9 bit_size: 1 - name: RTOF description: Receiver timeout clear flag bit_offset: 11 bit_size: 1 - name: EOBF description: End of block clear flag bit_offset: 12 bit_size: 1 - name: CMF description: Character match clear flag bit_offset: 17 bit_size: 1 - name: WUF description: Wakeup from Stop mode clear flag bit_offset: 20 bit_size: 1 fieldset/RQR: description: Request register fields: - name: ABRRQ description: Auto baud rate request. Resets the ABRF flag in the USART_ISR and request an automatic baud rate measurement on the next received data frame. bit_offset: 0 bit_size: 1 - name: SBKRQ description: "Send break request. Sets the SBKF flag and request to send a BREAK on the line, as soon as the transmit machine is available" bit_offset: 1 bit_size: 1 - name: MMRQ description: Mute mode request. Puts the USART in mute mode and sets the RWU flag. bit_offset: 2 bit_size: 1 - name: RXFRQ description: "Receive data flush request. Clears the RXNE flag. This allows to discard the received data without reading it, and avoid an overrun condition" bit_offset: 3 bit_size: 1 - name: TXFRQ description: Transmit data flush request. Sets the TXE flags. This allows to discard the transmit data. bit_offset: 4 bit_size: 1 fieldset/RTOR: description: Receiver timeout register fields: - name: RTO description: Receiver timeout value bit_offset: 0 bit_size: 24 - name: BLEN description: Block Length bit_offset: 24 bit_size: 8 enum/ABRMOD: bit_size: 2 variants: - name: Start description: Measurement of the start bit is used to detect the baud rate value: 0 - name: Edge description: Falling edge to falling edge measurement value: 1 - name: Frame7F description: "0x7F frame detection" value: 2 - name: Frame55 description: "0x55 frame detection" value: 3 enum/ADDM: bit_size: 1 variants: - name: Bit4 description: 4-bit address detection value: 0 - name: Bit7 description: 7-bit address detection value: 1 enum/CPHA: bit_size: 1 variants: - name: First description: The first clock transition is the first data capture edge value: 0 - name: Second description: The second clock transition is the first data capture edge value: 1 enum/CPOL: bit_size: 1 variants: - name: Low description: Steady low value on CK pin outside transmission window value: 0 - name: High description: Steady high value on CK pin outside transmission window value: 1 enum/DEP: bit_size: 1 variants: - name: High description: DE signal is active high value: 0 - name: Low description: DE signal is active low value: 1 enum/IRLP: bit_size: 1 variants: - name: Normal description: Normal mode value: 0 - name: LowPower description: Low-power mode value: 1 enum/LBDL: bit_size: 1 variants: - name: Bit10 description: 10-bit break detection value: 0 - name: Bit11 description: 11-bit break detection value: 1 enum/M0: bit_size: 1 variants: - name: Bit8 description: "1 start bit, 8 data bits, n stop bits" value: 0 - name: Bit9 description: "1 start bit, 9 data bits, n stop bits" value: 1 enum/M1: bit_size: 1 variants: - name: M0 description: Use M0 to set the data bits value: 0 - name: Bit7 description: "1 start bit, 7 data bits, n stop bits" value: 1 enum/MSBFIRST: bit_size: 1 variants: - name: LSB description: "data is transmitted/received with data bit 0 first, following the start bit" value: 0 - name: MSB description: "data is transmitted/received with MSB (bit 7/8/9) first, following the start bit" value: 1 enum/ONEBIT: bit_size: 1 variants: - name: Sample3 description: Three sample bit method value: 0 - name: Sample1 description: One sample bit method value: 1 enum/OVER: bit_size: 1 variants: - name: Oversampling16 description: Oversampling by 16 value: 0 - name: Oversampling8 description: Oversampling by 8 value: 1 enum/PS: bit_size: 1 variants: - name: Even description: Even parity value: 0 - name: Odd description: Odd parity value: 1 enum/RWU: bit_size: 1 variants: - name: Active description: Receiver in active mode value: 0 - name: Mute description: Receiver in mute mode value: 1 enum/STOP: bit_size: 2 variants: - name: Stop1 description: 1 stop bit value: 0 - name: Stop0p5 description: 0.5 stop bit value: 1 - name: Stop2 description: 2 stop bit value: 2 - name: Stop1p5 description: 1.5 stop bit value: 3 enum/WAKE: bit_size: 1 variants: - name: IdleLine description: USART wakeup on idle line value: 0 - name: AddressMark description: USART wakeup on address mark value: 1 enum/WUS: bit_size: 2 variants: - name: Address description: WUF active on address match value: 0 - name: Start description: WuF active on Start bit detection value: 2 - name: RXNE description: WUF active on RXNE value: 3