Legacy Document

Important: The information in this document is obsolete and should not be used for new development.

Chapter 7 - Serial Driver / Serial Driver Reference

SerSetBrk
You can use the SerSetBrk function to assert a break signal.
FUNCTION SerSetBrk (refNum: Integer): OSErr;
refNum
The driver reference number of the serial output driver.

DESCRIPTION
The SerSetBrk function forces the output data line into the space state. To form a break signal, the line must be left in this state longer than a character frame.

ASSEMBLY-LANGUAGE INFORMATION
The SerSetBrk function is equivalent to a Device Manager control request with a csCode value of 12.

RESULT CODES
noErr 0 No error

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Legacy Document

SerSetBrk

DESCRIPTION

ASSEMBLY-LANGUAGE INFORMATION

RESULT CODES noErr0No error

RESULT CODES
noErr 0 No error