TestSRQ
Purpose
Determine the current state of the GPIB Service Request (SRQ) line.
Format
C
void TestSRQ (int boardID, short *result)
Visual Basic
CALL TestSRQ (boardID%, result%)
Interactive Control (Usage Notes)
TestSRQ
Input
| boardID | The interface number |
Output
| result | State of the SRQ line: non-zero if the line is asserted, zero if the line is not asserted |
Description
TestSRQ returns the current state of the GPIB SRQ line in result. If SRQ is asserted, result contains a non-zero value. Otherwise, result contains a zero. Use TestSRQ to get the current state of the GPIB SRQ line. Use WaitSRQ to wait until SRQ is asserted.
Possible Errors
| ECIC | The interface is not the Controller-In-Charge; see SendIFC. |
| EDVR | The NI-488.2 driver is either configured incorrectly or is not properly installed. |
| EHDL | boardID is out of range. |
| ELCK | The requested operation could not be performed because of an existing lock by another process. |
| ENEB | The interface is not installed or is not properly configured. |
| EOIP | Asynchronous I/O is in progress. |