Experimental Physics and
Industrial Control System

"Pearson, MR \(Matthew\)" <[email protected]> · Thu, 14 Jun 2007 19:29:46 +0100

Update... it isn't a macro expansion problem, since in the built database file the macros are expanded properly (which the error message also says). It's something to do with the fact that I am using two arguments for the protocol function. But I know this is possible, so it must be just a syntax error...

Thanks,
Matthew

-----Original Message-----
From: [email protected] on behalf of Pearson, MR (Matthew)
Sent: Thu 14/06/2007 18:24
To: [email protected]
Subject: protocol/database macro expansion problem

Hi,

I'm trying to get the following protocol function and record to work:

setD {
   out "PID 1,%(\$1.VAL)f,%(\$2.VAL)f,%f";
}

record(ao, "$(P):D_S") {
  field(DTYP, "stream")
  field(OUT, "@ls340.proto setD($(P):P, $(P):I) $(PORT) $(ADDR)")
}

but at IOC startup I get:

2007/06/14 18:20:37.973 Businterface 'BL16I-EA-LS340-01:I)' not found
for 'BL16I-EA-LS340-01:D_S'
2007/06/14 18:20:37.973 BL16I-EA-LS340-01:D_S: Can't attach to bus
BL16I-EA-LS340-01:I) -1
2007/06/14 18:20:37.976 BL16I-EA-LS340-01:D_S: Record initialization
failed
Bad init_rec return value  PV: BL16I-EA-LS340-01:D_S ao: init_record

But if I only use the main PV name, and hard code the last part of the
PV into the protocol file, so that I only have one macro, then this
works. eg.

setD {
   out "PID 1,%(\$1:P.VAL)f,%(\$1:I.VAL)f,%f";
}

record(ao, "$(P):D_S") {
  field(DTYP, "stream")
  field(OUT, "@lakeshore340.proto setD($(P)) $(PORT) $(ADDR)")
}

but this isn't ideal because then two files are dependant on the last
part of the PV name.

Any ideas? Is it because I'm trying to expand two macros?

Cheers,
Matthew

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System