Struct lpc11uxx::usart::lsr::R

pub struct R { /* private fields */ }

Value read from the register

Implementations

impl R

pub fn bits(&self) -> u32

Value of the register as raw bits

pub fn rdr(&self) -> RDRR

Bit 0 - Receiver Data Ready:LSR[0] is set when the RBR holds an unread character and is cleared when the USART RBR FIFO is empty.

pub fn oe(&self) -> OER

Bit 1 - Overrun Error. The overrun error condition is set as soon as it occurs. A LSR read clears LSR[1]. LSR[1] is set when USART RSR has a new character assembled and the USART RBR FIFO is full. In this case, the USART RBR FIFO will not be overwritten and the character in the USART RSR will be lost.

pub fn pe(&self) -> PER

Bit 2 - Parity Error. When the parity bit of a received character is in the wrong state, a parity error occurs. A LSR read clears LSR[2]. Time of parity error detection is dependent on FCR[0]. Note: A parity error is associated with the character at the top of the USART RBR FIFO.

pub fn fe(&self) -> FER

Bit 3 - Framing Error. When the stop bit of a received character is a logic 0, a framing error occurs. A LSR read clears LSR[3]. The time of the framing error detection is dependent on FCR0. Upon detection of a framing error, the RX will attempt to re-synchronize to the data and assume that the bad stop bit is actually an early start bit. However, it cannot be assumed that the next received byte will be correct even if there is no Framing Error. Note: A framing error is associated with the character at the top of the USART RBR FIFO.

pub fn bi(&self) -> BIR

Bit 4 - Break Interrupt. When RXD1 is held in the spacing state (all zeros) for one full character transmission (start, data, parity, stop), a break interrupt occurs. Once the break condition has been detected, the receiver goes idle until RXD1 goes to marking state (all ones). A LSR read clears this status bit. The time of break detection is dependent on FCR[0]. Note: The break interrupt is associated with the character at the top of the USART RBR FIFO.

pub fn thre(&self) -> THRER

Bit 5 - Transmitter Holding Register Empty. THRE is set immediately upon detection of an empty USART THR and is cleared on a THR write.

pub fn temt(&self) -> TEMTR

Bit 6 - Transmitter Empty. TEMT is set when both THR and TSR are empty; TEMT is cleared when either the TSR or the THR contain valid data.

pub fn rxfe(&self) -> RXFER

Bit 7 - Error in RX FIFO. LSR[7] is set when a character with a RX error such as framing error, parity error or break interrupt, is loaded into the RBR. This bit is cleared when the LSR register is read and there are no subsequent errors in the USART FIFO.

pub fn txerr(&self) -> TXERRR

Bit 8 - Tx Error. In smart card T=0 operation, this bit is set when the smart card has NACKed a transmitted character, one more than the number of times indicated by the TXRETRY field.