Universal synchronous asynchronous receiver transmitter USART 0x0 0x400 registers SR SR Status register 0x0 0x20 0x00C00000 #ifndef __USART_ASYNCHRONOUS_ONLY CTS CTS flag 9 1 read-write #endif LBD LIN break detection flag 8 1 read-write TXE Transmit data register empty 7 1 read-only TC Transmission complete 6 1 read-write RXNE Read data register not empty 5 1 read-write IDLE IDLE line detected 4 1 read-only ORE Overrun error 3 1 read-only NF Noise detected flag 2 1 read-only FE Framing error 1 1 read-only PE Parity error 0 1 read-only DR DR Data register 0x4 0x20 read-write 0x00000000 DR Data value 0 9 0 511 BRR BRR Baud rate register 0x8 0x20 read-write 0x0000 DIV_Mantissa mantissa of USARTDIV 4 12 DIV_Fraction fraction of USARTDIV 0 4 CR1 CR1 Control register 1 0xC 0x20 read-write 0x0000 OVER8 Oversampling mode 15 1 UE USART enable 13 1 M Word length 12 1 WAKE Wakeup method 11 1 PCE Parity control enable 10 1 PS Parity selection 9 1 PEIE PE interrupt enable 8 1 TXEIE TXE interrupt enable 7 1 TCIE Transmission complete interrupt enable 6 1 RXNEIE RXNE interrupt enable 5 1 IDLEIE IDLE interrupt enable 4 1 TE Transmitter enable 3 1 RE Receiver enable 2 1 RWU Receiver wakeup 1 1 SBK Send break 0 1 CR2 CR2 Control register 2 0x10 0x20 read-write 0x0000 LINEN LIN mode enable 14 1 STOP STOP bits 12 2 #ifndef __USART_ASYNCHRONOUS_ONLY CLKEN Clock enable 11 1 CPOL Clock polarity 10 1 CPHA Clock phase 9 1 LBCL Last bit clock pulse 8 1 #endif LBDIE LIN break detection interrupt enable 6 1 LBDL lin break detection length 5 1 ADD Address of the USART node 0 4 CR3 CR3 Control register 3 0x14 0x20 read-write 0x0000 ONEBIT One sample bit method enable 11 1 #ifndef __USART_ASYNCHRONOUS_ONLY CTSIE CTS interrupt enable 10 1 CTSE CTS enable 9 1 RTSE RTS enable 8 1 #endif DMAT DMA enable transmitter 7 1 DMAR DMA enable receiver 6 1 #ifndef __USART_ASYNCHRONOUS_ONLY SCEN Smartcard mode enable 5 1 NACK Smartcard NACK enable 4 1 #endif HDSEL Half-duplex selection 3 1 IRLP IrDA low-power 2 1 IREN IrDA mode enable 1 1 EIE Error interrupt enable 0 1 #ifndef __USART_ASYNCHRONOUS_ONLY GTPR GTPR Guard time and prescaler register 0x18 0x20 read-write 0x0000 GT Guard time value 8 8 PSC Prescaler value 0 8 #endif # undef __USART_ASYNCHRONOUS_ONLY