RE: Epics C# Library problems

[Perrier Pierre <piperrier@sopragroup.com>]

Hello,

 

It’s what I’ve did for the monitor and it doesn’t seem to work. With this context I’ve tested the monitoring of a string waveform record which has a length 2 elements and all seems ok. I think that the problem is caused by the length of my waveform record which is 307,200

 

Cheers,

 

Pierre Perrier

 

 

De : Bertrand Alain [mailto:alain.bertrand@psi.ch]
Envoyé : jeudi 22 septembre 2011 08:54
À : Perrier Pierre; tech-talk@aps.anl.gov
Objet : RE: Epics C# Library problems

 

For a simple get you should do the following:

 

EpicsClient client = new EpicsClient();

client.Config.ServerList.Clear();

client.Config.ServerList.Add("129.129.130.88:5064"); // replace with the broadcast address or with the server / gateway one

EpicsChannel<int[]> record = client.CreateChannel<int[]>("TOTO:INT");

int[] data = "">

for (int i = 0; i < data.Length; i++)

{

    if (i != 0)

        Console.Write(", ");

    Console.Write(i);

}

Console.WriteLine("");

 

 

For a monitor:

 

static void Main(string[] args)

{

    EpicsClient client = new EpicsClient();

    client.Config.ServerList.Clear();

    client.Config.ServerList.Add("129.129.130.88:5064"); // replace with the broadcast address or with the server / gateway one

    EpicsChannel<int[]> record = client.CreateChannel<int[]>("TOTO:INT");

    record.MonitorChanged += new EpicsDelegate<int[]>(record_MonitorChanged);

    Console.ReadKey();

}

 

static void record_MonitorChanged(EpicsChannel<int[]> sender, int[] newValue)

{

    for (int i = 0; i < newValue.Length; i++)

    {

        if (i != 0)

            Console.Write(", ");

        Console.Write(newValue[i]);

    }

    Console.WriteLine("");

}

 

Personally I never use the Get function.

 

Cheers,

 

Alain Bertrand

 

 

 

---

From: tech-talk-bounces@aps.anl.gov [mailto:tech-talk-bounces@aps.anl.gov] On Behalf Of Perrier Pierre
Sent: Wednesday, September 21, 2011 4:40 PM
To: tech-talk@aps.anl.gov
Subject: Epics C# Library problems

 

Hello,

 

I’m trying the EPICS C# Library in order to create a client to manage a Camera IOC. Unfortunately, I have some problems with the monitoring of waveforms records.

 

I want to monitor a waveform PV which contains data of a 640x480 gray scale picture (integers from 0 to 255). So it’s a large waveform of 307,200 elements. When  I process the following code, I catch a “Server did not respond in Time to Get Request” exception ( or , in debug mode,  the code doesn’t return).

 

 

EpicsClient m_client = new EpicsClient();

try{

                EpicsChannel<int> m_acquisitionCamera = m_client.CreateChannel<int>(“CameraJAI :Acquisition”) ;

                Int[] l_data = m_acquisitionCamera.Get<int[]>() ; 

} catch (Exception e){

                System.Console.WriteLine(e.Message) ;

                System.Console.WriteLine(e.StackTrace) ;

}

 

Is there a way to fix this problem ? Any advices ? In order to really create a monitor, someone can show me a short sample of an EPICS C# monitor which manages an array record.

 

 

Best Regards,

Pierre PERRIER

Stagiaire - MCO LIL

Sopra group.

Parc Innolin
9 rue du Golf 33700 Merignac
Phone : +33 (0)5 56 12 79 59
piperrier@sopragroup.com - www.sopragroup.com

 

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