Ibwait, Ibwait -50 – Measurement Computing GPIB-488 User Manual
Page 63
Chapter 3
GPIB 488.1 Library Reference
3-50
GPIB-488
IBWAIT
Forces application program to wait for a specified event(s) to occur.
Syntax
C
ibwait (int boarddev, int mask)
Parameters
boarddev
is an integer containing the board or device handle.
mask
specifies the events that
ibwait
will wait for. Each bit in mask represents a different
event. These bits are the same as the bits in
ibsta
positions.
For more information regarding
ibsta
, see Appendix B,
.
Returns
ibsta
will contain a 16-bit status word as described in Appendix B,
.
iberr
will contain an error code, if an error occurred.
Usage Notes
Because the mnemonic for each bit of
ibsta
is defined as a constant within the header file,
you can elect to use the mnemonic rather than the hex value. If
TIMO
is set,
ibwait
returns
if the event does not occur within the timeout period of the device.
If a GPIB interface board is specified, the
RQS
bit is not applicable.
Bit
15
14
13
12
11
10
9
8
Event
ERR
TIMO
END
SRQI
RQS
CMPL
Bit
7
6
5
4
3
2
1
0
Event
LOK
REM
CIC
ATN
TACS
LACS
DTAS
DCAS