EPICS Controls Argonne National Laboratory

Experimental Physics and
Industrial Control System

1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024  Index 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
<== Date ==> <== Thread ==>

Subject: Re: asynInt32 pass 2 value
From: Vikram Bhagat <[email protected]>
To: Mark Rivers <[email protected]>, "[email protected] " <[email protected]>
Date: Thu, 14 Mar 2013 01:30:50 -0700 (PDT)

Yes, you are right. But slightly different. User have to set the V & I. EPICS device support takes these values and need to pass both value to linux driver to set power.
Linux driver takes 2 value so we have to set both value we cant set single value.

as you suggest way to take 2 PVs how i can combine both in the asyn driver ? if by some way it is possible in asyn driver can combine it then my problem solve.


Thanks  Mark



From: Mark Rivers <[email protected]>
To: 'Vbhagat' <[email protected]>; "[email protected] " <[email protected]>
Sent: Wednesday, March 13, 2013 9:35 PM
Subject: RE: asynInt32 pass 2 value

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



Replies:
Re: asynInt32 pass 2 value Maren Purves
RE: asynInt32 pass 2 value ian.gillingham
RE: asynInt32 pass 2 value Mark Rivers
References:
RE: asynInt32 pass 2 value Vbhagat
RE: asynInt32 pass 2 value Mark Rivers

Navigate by Date:
Prev: RE: asynInt32 pass 2 value Mark Rivers
Next: Re: asynInt32 pass 2 value Maren Purves
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
Navigate by Thread:
Prev: RE: asynInt32 pass 2 value Mark Rivers
Next: Re: asynInt32 pass 2 value Maren Purves
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
ANJ, 20 Apr 2015 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·