UART Status
[UART I/O Control Functions]

Collaboration diagram for UART Status:

---

Detailed Description

UART device status flags,.

A combination of these status flags is used by the _ioctl() commands UART_SETSTATUS and UART_GETSTATUS.

Defines
#define	UART_FRAMINGERROR   0x00000001UL
	Framing error.
#define	UART_OVERRUNERROR   0x00000002UL
	Overrun error.
#define	UART_PARITYERROR   0x00000004UL
	Parity error.
#define	UART_ERRORS   (UART_FRAMINGERROR | UART_OVERRUNERROR | UART_PARITYERROR)
	UART errors.
#define	UART_RXBUFFEREMPTY   0x00000040UL
	Receiver buffer empty.
#define	UART_TXBUFFEREMPTY   0x00000080UL
	Transmitter buffer empty.
#define	UART_RTSENABLED   0x00000100UL
	RTS handshake output enabled.
#define	UART_RTSDISABLED   0x00000200UL
	RTS handshake output disabled.
#define	UART_CTSENABLED   0x00000400UL
	CTS handshake input enabled.
#define	UART_CTSDISABLED   0x00000800UL
	CTS handshake input disabled.
#define	UART_DTRENABLED   0x00001000UL
	DTR handshake output enabled.
#define	UART_DTRDISABLED   0x00002000UL
	DTR handshake output disabled.
#define	UART_RXENABLED   0x00010000UL
	Receiver enabled.
#define	UART_RXDISABLED   0x00020000UL
	Receiver enabled.
#define	UART_TXENABLED   0x00040000UL
	Transmitter enabled.
#define	UART_TXDISABLED   0x00080000UL
	Transmitter enabled.
#define	UART_RXADDRFRAME   0x00100000UL
	Receive address frames only.
#define	UART_RXNORMFRAME   0x00200000UL
	Receive all frames.
#define	UART_TXADDRFRAME   0x00400000UL
	Transmit as address frame.
#define	UART_TXNORMFRAME   0x00800000UL
	Transmit as normal frame.

---

Define Documentation

#define UART_FRAMINGERROR   0x00000001UL

Framing error. UART_SETSTATUS will clear this error.

#define UART_OVERRUNERROR   0x00000002UL

Overrun error. UART_SETSTATUS will clear this error.

#define UART_PARITYERROR   0x00000004UL

Parity error. UART_SETSTATUS will clear this error.

#define UART_ERRORS   (UART_FRAMINGERROR | UART_OVERRUNERROR | UART_PARITYERROR)

UART errors. UART_SETSTATUS will clear all errors.

#define UART_TXBUFFEREMPTY   0x00000080UL

Transmitter buffer empty. UART_SETSTATUS will immediately clear the buffer. It will not wait until the remaining characters have been transmitted.

#define UART_RXADDRFRAME   0x00100000UL

Receive address frames only. Used in multidrop communication. May only work if 9 databits have been configured.

#define UART_RXNORMFRAME   0x00200000UL

Receive all frames. Used in multidrop communication.

#define UART_TXADDRFRAME   0x00400000UL

Transmit as address frame. Used in multidrop communication. May only work if 9 databits have been configured.

#define UART_TXNORMFRAME   0x00800000UL

Transmit as normal frame. Used in multidrop communication.

---