xOffSent
#include <Serial.h>
typedef struct SerStaRec { Size Offset Description char cumErrs; 1 0 Accumulated errors
char xOffSent; 1 1 Input flow control XOff message
char rdPend; 1 2 Flags a pending Read
char wrPend; 1 3 Flags a pending Write
char ctsHold; 1 4 Flags a Clear to Send flow control
Hold
char xOffHold; 1 5 Flags an XOff flow control Hold
Notes: This structure represents the contents of the serSta field in the SerStatus
procedure and addresses the input and output drivers as identified by the
call's refNum field. It is used to by the driver to deliver status
information as follows:
The Cumerrs field shows the values:
swOverrunErr (1) set if a software overrun error has
occurred
parityErr (16) set if a parity error has occurred
hwOverrunErr (32) set in the event of a hardware overrun
errorframingErr (64) set in the event of a framing error
When the driver sends an XOff character, the xOffSent field will contain
the predefined constant:
xOffWasSent 0x080 XOff character sent
A pending Read or Write will set the rdPend and wrPend parameters;
when no Read or Write is pending they will both be zero.
CtsHold is set when output is suspended because the hardware handshake
was disabled: otherwise it is zero.
XOffHold will be set if output was suspended due to receipt of an XOff
character.