#20 Enum communication problem between EpicsSharp and ControlSystemStudio

[Pierluigi Fumi]

Hi all
do you know of any problem between EpicsSharp and Python during enum PV access?
I can correctly get the value of an ENUM variable from caget, but in Python I got an unexpected datatype (time enum). I am using the pv.type attribute described here ( http://cars9.uchicago.edu/software/python/pyepics3/pv.html ) to get the PV information. I have the same problem using the Epics implementation in ControlSystemStudio.

Thanks a lot
gigi

[Daniel J. Lauk]

Hi Gigi

I am not aware of any issues, but I can have a look.
Can you provide a minimal, complete, and verifiable example for both the Python and .NET parts, please?

Thanks
DJ

[Pierluigi Fumi]

Hi Daniel, thanks a lot for the fast reply. I can prepare both example
for you, I'll let you know in the next days.

Many thanks
gigi

On Thu, Jun 8, 2017 at 11:03 AM, Daniel J. Lauk djlauk@users.sf.net wrote:

Hi Gigi

I am not aware of any issues, but I can have a look.
Can you provide a minimal, complete, and verifiable example for both the
Python and .NET parts, please?

Thanks
DJ

---

[tickets:#20] Enum communication problem between EpicsSharp and
ControlSystemStudio

Status: open
Milestone: 1.0
Labels: ENUM
Created: Wed Jun 07, 2017 03:13 PM UTC by Pierluigi Fumi
Last Updated: Wed Jun 07, 2017 03:13 PM UTC
Owner: Alain Bertrand

Hi all
do you know of any problem between EpicsSharp and Python during enum PV
access?
I can correctly get the value of an ENUM variable from caget, but in Python
I got an unexpected datatype (time enum). I am using the pv.type attribute
described here ( http://cars9.uchicago.edu/software/python/pyepics3/pv.html
) to get the PV information. I have the same problem using the Epics
implementation in ControlSystemStudio.

Thanks a lot
gigi

---

Sent from sourceforge.net because you indicated interest in
https://sourceforge.net/p/epicssharp/tickets/20/

To unsubscribe from further messages, please visit
https://sourceforge.net/auth/subscriptions/

[Pierluigi Fumi]

Hi Daniel
I put online here
https://drive.google.com/open?id=0B2L2AJOmDzkbeVhoQ1RzY1ItZk0 a zip
containing:

• the python script that fails
• the source of the .Net project. It contains both the source of my
  program that uses the enum (TestEpicsEnum) and the epicssharp server
  sources (the nuget package is not updated to the last version and it
  does not handle the enums).

The .Net program has a timer that updates on a textbox the value of
the enum PV. You can change the value of the PV by pressing a button
on the form, or by using the caput functionalities (I put two
textboxes to copy/paste on the commandline).

The python script ticket_20.py tries to update the value, but it
fails. This is the error I get:

python ticket_20.py
EpicsSharp ticket 20 test case.
Process variable: PMA:TRPD:COMMAND
0 = STOP
1 = START
C:\Users\ut\AppData\Local\Programs\Python\Python36\lib\site-packages\epics\ca.py:1435:
UserWarning:
ca.get_ctrlvars('PMA:TRPD:COMMAND') timed out after 5.00 seconds.
warnings.warn(msg % (name(chid), timeout))
Traceback (most recent call last):
File "ticket_20.py", line 13, in <module>
pv.put("STOP", wait=True)
File "C:\Users\ut\AppData\Local\Programs\Python\Python36\lib\site-packages\epics\pv.py",
line 332,
in put
if value in self._args['enum_strs']:
TypeError: argument of type 'NoneType' is not iterable</module>

Thanks a lot
Bests,
gigi

On Thu, Jun 8, 2017 at 11:03 AM, Daniel J. Lauk djlauk@users.sf.net wrote:

Hi Gigi

I am not aware of any issues, but I can have a look.
Can you provide a minimal, complete, and verifiable example for both the
Python and .NET parts, please?

Thanks
DJ

---

[tickets:#20] Enum communication problem between EpicsSharp and
ControlSystemStudio

Status: open
Milestone: 1.0
Labels: ENUM
Created: Wed Jun 07, 2017 03:13 PM UTC by Pierluigi Fumi
Last Updated: Wed Jun 07, 2017 03:13 PM UTC
Owner: Alain Bertrand

Hi all
do you know of any problem between EpicsSharp and Python during enum PV
access?
I can correctly get the value of an ENUM variable from caget, but in Python
I got an unexpected datatype (time enum). I am using the pv.type attribute
described here ( http://cars9.uchicago.edu/software/python/pyepics3/pv.html
) to get the PV information. I have the same problem using the Epics
implementation in ControlSystemStudio.

Thanks a lot
gigi

---

Sent from sourceforge.net because you indicated interest in
https://sourceforge.net/p/epicssharp/tickets/20/

To unsubscribe from further messages, please visit
https://sourceforge.net/auth/subscriptions/

[Daniel J. Lauk]

Thanks for the example(s). I did some digging and it turns out, enums have not received sufficient attention previously.

I'll update this issue as soon as I have a solution to offer.