 04 Jun 2020, Stefan Ritt, Forum, Template of slow control frontend
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> I’m beginner of Midas, and trying to develop the slow control front-end with the latest Midas.
> I found the scfe.cxx in the “example”, but not enough to refer to write the front-end for my own devices
> because it contains only nulldevice and null bus driver case...
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04 Jun 2020, Hisataka YOSHIDA, Forum, Template of slow control frontend
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Dear Stefan,
Thank you for you quick reply.
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04 Jun 2020, Hisataka YOSHIDA, Forum, Template of slow control frontend
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Dear Giorgio,
Thank you very much for your kind and quick reply!
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 10 Jun 2020, Ivo Schulthess, Forum, slow-control equipment crashes when running multi-threaded on a remote machine
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Dear all
To reduce the time needed by Midas between runs, we want to change some of our periodic equipment to multi-threaded slow-control equipment. To do that |
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10 Jun 2020, Konstantin Olchanski, Forum, slow-control equipment crashes when running multi-threaded on a remote machine
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Yes, it is supposed to crash. On a remote frontend, cm_get_path() cannot be used
(we are on a different computer, all filesystems maybe no the same!) and is actually not set and
triggers a trap if something tries to use it. (this is the crash you see).
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10 Jun 2020, Stefan Ritt, Forum, slow-control equipment crashes when running multi-threaded on a remote machine
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Few comments:
- As KO write, we might need semaphores also on a remote front-end, in case several programs share the same hardware. So it should work and cm_get_path() |
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12 Jun 2020, Ivo Schulthess, Forum, slow-control equipment crashes when running multi-threaded on a remote machine
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Thanks you two once again for the very fast answers. I tested the example on the local machine and it works perfectly fine. In the meantime I also created
two new drivers for our devices
and everything works with them, the improvement in time is significant and I will create drivers for all our devices where possible. If they are in a working |
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18 Jun 2020, Ruslan Podviianiuk, Forum, ODB key length
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Hello,
I have a question about length of the name of ODB key.
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18 Jun 2020, Stefan Ritt, Forum, ODB key length
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No. But if you need more than 32 characters, you do something wrong. The
information you want to put into the ODB key name should probably be stored in
another string key or so.
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21 Aug 2020, Ruslan Podviianiuk, Forum, time information 
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Hello,
I have a few questions about time information:
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24 Aug 2020, Stefan Ritt, Forum, time information
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> 1. Is it possible to get "Running time" using, for example, jsonrpc? (please see
> the attached file)
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24 Aug 2020, Konstantin Olchanski, Forum, History plot problems for frontend with multiple indicies
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This turned out to be a tricky problem. I am adding a warning about it in mlogger. This should go into midas-
2020-07. Closing bug #193. K.O.
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25 Aug 2020, Ruslan Podviianiuk, Forum, time information
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Thank you, Stefan
Ruslan
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25 Aug 2020, Ruslan Podviianiuk, Forum, time information
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Thank you, Stefan
>>>var d = new Date(start_time_binary);
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02 Sep 2020, Ruslan Podviianiuk, Forum, Transition status message
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Hello,
I got an error after start of run and it would be good to show this error (or
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02 Sep 2020, Ben Smith, Forum, Transition status message
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The information you want is in the ODB:
* "/System/Transition/status" is the overall integer status code.
* "/System/Transition/error" is the overall error message string.
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02 Sep 2020, Ruslan Podviianiuk, Forum, Transition status message
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> The information you want is in the ODB:
> * "/System/Transition/status" is the overall integer status code.
> * "/System/Transition/error" is the overall error message string.
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08 Sep 2020, Zaher Salman, Forum, json parser error
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I am getting the following error alert in a custom page whenever a run starts
json parser exception: SyntaxError: Unexpected token < in JSON at position 985, batch request: method: "db_get_values", params: [object Object], id: 1598691925697 |
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08 Sep 2020, Konstantin Olchanski, Forum, json parser error
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> I am getting the following error alert in a custom page whenever a run starts
> json parser exception: SyntaxError: Unexpected token < in JSON at position 985, batch request: method: "db_get_values", params: [object Object], id:
1598691925697 method: "get_alarms", params: null, id: 1598691925697 method: "cm_msg_retrieve", params: [object Object], id: 1598691925697 method: "cm_msg_retrieve", |
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08 Sep 2020, Konstantin Olchanski, Forum, Transition status message
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> > The information you want is in the ODB:
> > * "/System/Transition/status" is the overall integer status code.
> > * "/System/Transition/error" is the overall error message string.
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