Re: Waveform record updating problem

[Eric Norum <norume@aps.anl.gov>]

Why could you not use asyn?
You could use the Tektronix TDS3000/5000 driver as an example.

On Jul 23, 2009, at 2:15 AM, Prachi Chitnis wrote:

> Hello,
> My setup consists of a LeCroy scope that is interfaced to an Ubuntu  
> 8.10
> machine on Ethernet.
> I could not use Asyn to communicate with this scope, so I wrote device
> support for it. My db file is as follows:
>
>
> record(waveform, GetWFC1) {
>  field(SCAN, "1 second")
>  field(PINI, "NO")
>  field(DTYP, "LeCroy WaveSurfer")
>  field(INP, "#C1 S1 @C1:WAVEFORM? DAT1\n")
>  field(NELM, "1000")
>  field(FTVL, "CHAR")
> }
>
> record(waveform, C1a) {
>  field(SCAN, "1 second")
>  field(PINI, "NO")
>  field(DTYP, "Soft Channel")
>  field(INP, "GetWFC1 CA")
>  field(NELM, "1000")
>  field(FTVL, "CHAR")
> }
>
> I am using the VME_IO for input link for "LeCroy Wavesurfer" device
> support. Card = (1,0) denotes (write, no write) to device, Signal =  
> (1,0)
> denotes (read, no read) from the device and the parm denotes the  
> command
> to be written to the device. The GetWFC1.VAL field is showing  
> correct data
> & is updating properly.
>
> My problems are:
>
> 1)  When I keep C1a.INP as PP, I dont get any data into it.
>
> 2)  When I keep C1a.INP as CA (also CP), and monitor this record, I  
> get
> the data into VAL field, the timestamp updates but the data doesn't
> update.
>
> 3)  When I morph C1a to subarray record, with same fields and MALM  
> set to
> 1000, the the same prob as 2) occurs
>
> 4) I also set the PHAS fields of both records as 0 and 1(resp.), but  
> that
> too didn't work.
>
> 5)  When I group these two records, then nor PP neither CA input  
> link is
> able to fetch data into the VAL field of group:C1a record.
>
> 6)  I also tried to make the scan rate of C1a faster than GetWFC1, but
> that didn't help.
>
> Please suggest some solution.
> Thanx in advance...
>
> --
> Prachi Chitnis
> Scientific Officer 'C'
> Raja Ramanna Centre for Advanced Technology, Indore
> India
--
Eric Norum <norume@aps.anl.gov>
Advanced Photon Source
Argonne National Laboratory
(630) 252-4793