Re: Using AD plugins on asyn port

["Johnson, Andrew N. via Tech-talk" <tech-talk at aps.anl.gov>]

You can use an aao (array analog output) record to read array data from another record using the DOL input link and write it through the OUT output link to another record. The DOL and OMSL fields were added to it in EPICS 7.0.7.

- Andrew

-- 

Complexity comes for free, Simplicity you have to work for.

On 7/22/25, 10:24 AM, "Tech-talk" <tech-talk-bounces at aps.anl.gov> wrote:

Hi,

 

Apologies, I haven’t used that driver myself, and I assumed it would work like the pvaDriver. Mark is right, seems like you need an extra step to copy the waveform data into ArrayIn. One other option might be an array subroutine record.

 

Cheers,

Matt

 

From: Mark Rivers <rivers at cars.uchicago.edu>
Sent: Tuesday, July 22, 2025 8:43 AM
To: Pearson, Matthew <pearsonmr at ornl.gov>; tech-talk at aps.anl.gov; Abdalla Ahmad <Abdalla.Ahmad at sesame.org.jo>
Subject: [EXTERNAL] Re: Using AD plugins on asyn port

 

Hi Abdalla, it is exactly what I need, but it is still unclear how it interfaces with my existing waveform record, i. e. How to pass data from my waveform record to $(P)$(R)ArrayIn. My waveform record already has its INP field set to read input

Hi Abdalla,

 

·          it is exactly what I need, but it is still unclear how it interfaces with my existing waveform record, i.e. How to pass data from my waveform record to $(P)$(R)ArrayIn. My waveform record already has its INP field set to read input from a compress record doing circular buffer at 200 Hz from the hardware.

 

You probably need to use some additional code, for example in Python or SNL.  That code will read from your existing waveform record and write to ArrayIn.  It can also configure the other records in NDDriverStdArrays, and decide when to copy the waveform record.  For example, it may only copy when the waveform record is "full", not on each incremental update.

 

There are examples of Python and IDL code in the NDDriverStdArrays repository.

 

Mark

 

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From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of Abdalla Ahmad via Tech-talk <tech-talk at aps.anl.gov>
Sent: Tuesday, July 22, 2025 1:58 AM
To: Pearson, Matthew <pearsonmr at ornl.gov>; tech-talk at aps.anl.gov <Tech-talk at aps.anl.gov>
Subject: RE: Using AD plugins on asyn port

 

Thanks Matt, it is exactly what I need, but it is still unclear how it interfaces with my existing waveform record, i.e. How to pass data from my waveform record to $(P)$(R)ArrayIn. My waveform record already has its INP field set to read input from a compress record doing circular buffer at 200 Hz from the hardware.

 

Best Regards,

Abdalla Al-Dalleh

Control Engineer

SESAME

 

From: Pearson, Matthew <pearsonmr at ornl.gov>
Sent: Monday, July 21, 2025 5:01 PM
To: Abdalla Ahmad <Abdalla.Ahmad at sesame.org.jo>; tech-talk at aps.anl.gov
Subject: RE: Using AD plugins on asyn port

 

Hi Abdalla,

 

This might be what you need:

https://areadetector.github.io/areaDetector/NDDriverStdArrays/NDDriverStdArraysDoc.html

 

It monitors a waveform record and can turn it into an NDArray, which can then be processed by other areaDetector plugins as needed. It doesn’t connect to the Asyn port that is producing the waveform data directly, but instead sets up a channel access monitor.

 

Cheers,

Matt

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> On Behalf Of Abdalla Ahmad via Tech-talk
Sent: Monday, July 21, 2025 3:14 AM
To: tech-talk at aps.anl.gov
Subject: [EXTERNAL] Using AD plugins on asyn port

 

Hi Is there a way to apply AD plugins on a waveform record processed from asyn port without rewriting an asynNDArrayDriver class? i. e. , something to be done in the st. cmd maybe? Best Regards, Abdalla Al-Dalleh Control Engineer SESAME ‍ ‍ ‍ ‍ ‍ ‍

 

Hi

 

Is there a way to apply AD plugins on a waveform record processed from asyn port without rewriting an asynNDArrayDriver class? i.e., something to be done in the st.cmd maybe?

 

Best Regards,

Abdalla Al-Dalleh

Control Engineer

SESAME