Experimental Physics and
Industrial Control System

"J. Frederick Bartlett ([email protected])" <[email protected]> · Thu, 25 May 2000 12:20:49 CDT

  I have a question for the experts. Is there a standard field in all
records in which detailed device status (status from device support)
may be placed where is is accessible by a database get operation.

  My particular difficulty appears with asynchronous device support
for the MIL/STD1553B bus. We have a controller for the 1553 bus which
generates an interrupt at the end of a bus transaction. The 1553 bus
driver reschedules record "processing" (PACT is non-zero at this point) at
interrupt time via a call to callbackRequestProcessCallback, passing a
longword with bus I/O completion status. I need to save this status in
a standard record field (one that all records have) so that, if there
was an error, the application program may retrieve it. Any
suggestions?

						Fritz Bartlett

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System