RE: AreaDetector: device with 3 network ports

[Mark Rivers via Tech-talk <tech-talk at aps.anl.gov>]

Hi David,

 

You could use this driver as an example:

https://github.com/epics-modules/quadEM/blob/master/quadEMApp/src/drvNSLS_EM.cpp

 

It creates 3 drvAsynIPPorts in the driver itself. One is UDP, 2 are TCP.  Using that approach you can just pass the IP address to the xxxConfigure command and constructor, and then the calls to drvAsynIPPortConfigure are done in the driver itself, not in the startup script.

 

I think this approach should work fine, you don’t need to use the raw socket calls.

 

I don’t remember why I used the raw socket calls for the Pixirad driver.  It may just be that I did not realize I could use drvAsynIPPort.

 

Mark

 

 

 

 

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> On Behalf Of David Vine via Tech-talk
Sent: Thursday, April 21, 2022 11:57 AM
To: tech-talk at aps.anl.gov
Subject: AreaDetector: device with 3 network ports

 

Hi all,

 

I'm looking for the best AD module to base a new driver on.

 

I'm working with a new flat panel detector that receives commands, sends responses and sends data from three different ports on the same ip address using UDP. Each image is about 13MB and it can supposedly do 45 fps (585MB/s) on a 10 GB connection.

 

I found an old message (https://epics.anl.gov/tech-talk/2017/msg00592.php) with some suggestions and the closest one it seems is Pixirad. But the pixirad creates on ip port in st.cmd and a direct socket connection for the data.

 

I would naively create three drvAsynIPPortConfigure one for each port but that's not how it is done in Pixirad and I'd like to avoid working directly with sockets if possible.

 

Can I use Mythen as a model and just make a "mythenConfig" that takes 3 ip ports? Is that not preferred for some reason? The approach I choose needs to handle 585MB/s.

 

Thanks,
David

 

 

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