SerStatus

Determine status of specified input or output driver

#include <Serial.h> Serial Drivers

OSErr SerStatus( refNum, serSta );

short refNum ; input or output driver reference number

SerStaRec *serSta ; data structure with driver status information

returns Error Code; 0=no error

SerStatus gets three bytes of status information from the SerStaRec data

structure for the specified input or output driver.

refNum is the parameter that identifies the input or output driver for which

status information is being obtained.

serSta is three bytes of such status information as cumulative errors, XOff

flow control, and signals for pending reads and writes.

Returns: an operating system Error Code.

noErr (0) No error

Notes: This call is equivalent to a Device Manager Status call with csCode=8

and with SerSta returned through csParam+5 in csParam.

Referenced by (3):