win32file.EscapeCommFunction

EscapeCommFunction(handle)

directs a specified communications device to perform an extended function.

Parameters

The handle to the communications device.

Value Meaning

CLRDTR Clears the DTR (data-terminal-ready) signal.

CLRRTS Clears the RTS (request-to-send) signal.

SETDTR Sends the DTR (data-terminal-ready) signal.

SETRTS Sends the RTS (request-to-send) signal.

SETXOFF Causes transmission to act as if an XOFF character has been received.

SETXON Causes transmission to act as if an XON character has been received.

SETBREAK Suspends character transmission and places the transmission line in a break state until the ClearCommBreak function is called (or EscapeCommFunction is called with the CLRBREAK extended function code). The SETBREAK extended function code is identical to the SetCommBreak function. Note that this extended function does not flush data that has not been transmitted.

CLRBREAK Restores character transmission and places the transmission line in a nonbreak state. The CLRBREAK extended function code is identical to the ClearCommBreak function.

Value	Meaning

CLRDTR	Clears the DTR (data-terminal-ready) signal.
CLRRTS	Clears the RTS (request-to-send) signal.
SETDTR	Sends the DTR (data-terminal-ready) signal.
SETRTS	Sends the RTS (request-to-send) signal.
SETXOFF	Causes transmission to act as if an XOFF character has been received.
SETXON	Causes transmission to act as if an XON character has been received.
SETBREAK	Suspends character transmission and places the transmission line in a break state until the ClearCommBreak function is called (or EscapeCommFunction is called with the CLRBREAK extended function code). The SETBREAK extended function code is identical to the SetCommBreak function. Note that this extended function does not flush data that has not been transmitted.
CLRBREAK	Restores character transmission and places the transmission line in a nonbreak state. The CLRBREAK extended function code is identical to the ClearCommBreak function.