Experimental Physics and
Industrial Control System

Mark Rivers <[email protected]> · Wed, 13 Mar 2013 20:35:40 +0000

What I am asking is what are the two values used for?  Are they for 2 different parameters, for example one controls the voltage and the controls the current on a power supply.  Or are you trying to send 2 successive values of the voltage?

If they are 2 different parameters then you should be using the drvUser interface to pass that information from device support to the driver.

For example one record might be:

record(ao, “Current”) {
  field(DTYP, “asynInt32”)
  field(OUT, “@asyn($(PORT),0,0)CURRENT)
}

record(ao, “Voltage”) {
  field(DTYP, “asynInt32”)
  field(OUT, “@asyn($(PORT),0,0)VOLTAGE)
}

The asyn driver will take the drvUser strings “CURRENT” and “VOLTAGE” and parse them.  Typically it will set the pasynUser->reason field of the device support pasynUser as a flag to indicate what parameter this record is associated with.

If this is the type of thing you are trying to do then you should not be trying to send two values over the asynInt32 interface at the same time (which is not possible).  You send them separately, with the pasynUser->reason flag that indicates which parameter is being sent.

Mark

From: Vbhagat [mailto:[email protected]] 
Sent: Wednesday, March 13, 2013 3:12 PM
To: Mark Rivers; [email protected] 
Subject: RE: asynInt32 pass 2 value

Actually i want to pass 2 value & driver do process on both.  I think asyIntt32Array can use , but specifically. I don't know how to use it.
With regard

Sent from Samsung Mobile

Mark Rivers <[email protected]> wrote:

What do you want to do with the two values?  Have the driver process one and then the other soon after?  Why do you want to send 2 values?

Mark

________________________________
From: [email protected] [[email protected]] on behalf of Vikram Bhagat [[email protected]]
Sent: Wednesday, March 13, 2013 4:51 AM
To: [email protected]
Subject: asynInt32 pass 2 value

Hi all,
     Is there any way to pass 2 values for asynInt32 PVs ?
for example
$$ caput PVNAME 255 254

and record pass these 2 values to device support for processing.

or by any othere DTYP  have such facility.....

Thanks

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System