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vrf I/O transactions

Question asked by rsb on Oct 31, 2002

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"Blalock, William T." <WILLIAM.T.BLALOCK@saic.com> wrote:
> Thanks Stan.
>
> Your method is definitely easier to implement. I just put in a loop with a
> couple of variables for number of reads and array size. I'm curious though,
> is there a way to add or delete actual I/O transactions programmatically?
> Thanks again, Todd.

No simple way.

Stan

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VRFuser Oct 30, 2002 3:01 PM
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All,

I need to make multiple reads of data arrays coming from an instrument. The
problem is the number of reads
and arrays can change from test to test. I want to make this transparent.
Is there any way to set up I/O transactions on the fly? Maybe using
records? Any help appreciated. Using VEE 6.03, Win2k.

William T. Blalock
Science Applications International Corporation
Engineering Technician/Technical Analyst
E-Mail: blalockw@saic.com
RF Lab (Comm / DSN):(256) 313-7869 / 897-7869
RF Lab Fax (Comm / DSN):(256) 313-7861 / 897-7861

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VRFuser Oct 30, 2002 5:25 PM
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Thanks Stan.

Your method is definitely easier to implement. I just put in a loop with a
couple of variables for number of reads and array size. I'm curious though,
is there a way to add or delete actual I/O transactions programmatically?
Thanks again, Todd.

-----Original Message-----
From: Stan Bischof [mailto:rsb@soco.agilent.com]
Sent: Thursday, October 31, 2002 9:33 AM
To: WILLIAM.T.BLALOCK@saic.com
Cc: vrf@it.lists.it.agilent.com
Subject: Re: [vrf] I/O transactions

"Blalock, William T." <WILLIAM.T.BLALOCK@saic.com> wrote:
> All,
>
> I need to make multiple reads of data arrays coming from an instrument.
The
> problem is the number of reads
> and arrays can change from test to test. I want to make this transparent.
> Is there any way to set up I/O transactions on the fly? Maybe using
> records?   Any help appreciated. Using VEE 6.03, Win2k.

Sure.

If you're just looking at changing array sizes then use a variable.

If you want one array read in multiple times then you could
(1) use a loop

or

(2) read all the arrays into a larger array using variable length

     e.g. let's say that you need to read in a variable qty of
           256x256 real 2D arrays.
           then set up your transaction to read 3D arrays of size
           256x256xVAR

     then [*,*,0] is the first array, [*,*,1] is the second and so on.

Stan

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Stan Bischof Agilent Technologies 707-577-3994 stan_bischof@agilent.com
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bill.ossmann Oct 30, 2002 10:24 PM
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You could pull the optional transactions out into separate I/O blocks which would be executed conditionally. You will need to control the execution order with sequence lines, and of course you need to know what all the options are when coding.

--
Bill Ossmann
Philips Ultrasound
e-mail: bill.ossmann@philips.com

                      Stan Bischof
                      (Richard S)                  To: "VEE vrf" <vrf@it.lists.it.agilent.com>
                      <rsb@soco.agilen             cc: vrf@it.lists.it.agilent.com
                      t.com>                        (bcc: Bill Ossmann/ANR/MS/PHILIPS)
                                                   Subject:   [vrf] RE: I/O transactions
                      10/31/2002 12:45
                      PM                           Classification:
                      Please respond
                      to Stan Bischof
                      (Richard S)

"Blalock, William T." <WILLIAM.T.BLALOCK@saic.com> wrote:
> Thanks Stan.
>
> Your method is definitely easier to implement. I just put in a loop with a
> couple of variables for number of reads and array size. I'm curious though,
> is there a way to add or delete actual I/O transactions programmatically?
> Thanks again, Todd.

No simple way.

Stan

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rsb Oct 31, 2002 7:33 AM
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"Blalock, William T." <WILLIAM.T.BLALOCK@saic.com> wrote:
> All,
>
> I need to make multiple reads of data arrays coming from an instrument. The
> problem is the number of reads
> and arrays can change from test to test. I want to make this transparent.
> Is there any way to set up I/O transactions on the fly? Maybe using
> records?   Any help appreciated. Using VEE 6.03, Win2k.

Sure.

If you're just looking at changing array sizes then use a variable.

If you want one array read in multiple times then you could
(1) use a loop

or

(2) read all the arrays into a larger array using variable length

     e.g. let's say that you need to read in a variable qty of
           256x256 real 2D arrays.
           then set up your transaction to read 3D arrays of size
           256x256xVAR

     then [*,*,0] is the first array, [*,*,1] is the second and so on.

Stan

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