 08 Aug 2024, Stefan Ritt, Info, mana.cxx
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We are considering to remove the analyzer framework mana.cxx from MIDAS. It
currently has some compiler warnings and we wonder if we should fix them which
would take some time or just remove the file. We have now to much more modern
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 19 Aug 2024, Stefan Ritt, Forum, "Safe" abort of sequencer scripts
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This request came more than once in the past. One thing I could implement is a "atexit" function similarly to the C funciton atexit().
Then we would have a function in the script which gets called whenever one does "stop immediately". This function can then restore
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23 Aug 2024, Stefan Ritt, Info, mana.cxx
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Ok, no relevant complains so far, so I removed mana and rmana from the CMake build
process, but left the file mana.cxx still in the repository for educational
purposes ;-)
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26 Aug 2024, Stefan Ritt, Info, Help parsing scdms_v1 data?
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The MIDAS event format is described here:
https://daq00.triumf.ca/MidasWiki/index.php/Event_Structure
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01 Sep 2024, Stefan Ritt, Suggestion, Improve Event Documentation
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> Hi,
>
> I am writing a Rust based midas file reader however it was kind of hard to understand the full midas file
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04 Sep 2024, Stefan Ritt, Info, News MSCB++ API
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I had two free afternoon and took the opportunity to write a new API for the MSCB
system. I'm not sure if anybody else actually uses MSCB (MIDAS slow control bus),
but anyhow.
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05 Sep 2024, Stefan Ritt, Forum, Python frontend rate limitations?
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> First the general advice: if you reduce the "period" of your equipment, then your function will get called more frequently.
> You can set it to 0 and we'll call it as often as possible. You can set this in the ODB at "/Equipment/Python Data Simulator/Common/Period"
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16 Sep 2024, Stefan Ritt, Bug Report, Crash using ODB watch
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The answer is in the error message: „Object went out of scope“. When your frontent_init() exits, the odb objects are destroyed. When you get a callback,
it‘s linked to the
destroyed object. This is like if you have a local string and pass a reference to that string in the return of the function.
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16 Sep 2024, Stefan Ritt, Bug Report, Crash using ODB watch
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Well, the object *went* out of scope. For my code it‘s hard to realize this, so the error reporting is poor. Also the first object should have the same
problem. Just by accident that it does not crash.
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20 Sep 2024, Stefan Ritt, Bug Report, Crash using ODB watch
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The problem has been fixed in the current version. Here is my analysis:
- the midas::odb object *can* go out of scope in the function, since the odb::watch() function creates a deep copy of the object.
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20 Sep 2024, Stefan Ritt, Suggestion, Clean up compiler warning in manalyzer
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> I like the look of std::format, looks cleaner than string streams
I fully agree. String streams is a pain if you want to do zero-leading hex output mixed with decimal output. Yes it's easier to read if you don't know |
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24 Sep 2024, Stefan Ritt, Info, News MSCB++ API
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> Where is the example of error handling?
#include "mscbxx.h"
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09 Oct 2024, Stefan Ritt, Suggestion, odbedit minor quality of life
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Ok, accepted, done and pushed.
Stefan
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11 Oct 2024, Stefan Ritt, Bug Report, Frontend name must differ from others by more than the last three characters
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Hi Denis,
indeed a bug. Will fix it next week.
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18 Oct 2024, Stefan Ritt, Bug Report, Frontend name must differ from others by more than the last three characters
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Fixed and committed.
Best,
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07 Nov 2024, Stefan Ritt, Suggestion, Stop run and sequencer button
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I don't find this very useful. Some experiments do not only want to stop the run, but also do other cleanup things. To do that, I proposed and "atexit"
function like C has it. Then the user can put a run stop there, plus any other cleanup. This will be much more flexible. Think about the "reset" script
we have to manually run if we abort a sequencer. The atexit function will come next week, so you should consider to use it instead your additional button.
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13 Nov 2024, Stefan Ritt, Info, New sequencer command ODBLOOKUP
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A new sequencer command "ODBLOOKUP" has been implemented, which does a lookup of a string in a string
array in the ODB given by a path and returns its index as a number. If we have for example an array
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14 Nov 2024, Stefan Ritt, Suggestion, Issue with creating banks
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All I can see is that your bank header gets corrupted along the way. The funny character reported by
cm_write_event_to_odb indicates that your original name "RPD0" got overwritten somewhere, but I could not spot any
mistake in your code.
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18 Nov 2024, Stefan Ritt, Info, New sequencer command ODBLOOKUP
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> "value not found" sets "index" to ?
It sets it actually to "not found". Since all variables are stings in the sequencer, you can then do a test like
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21 Nov 2024, Stefan Ritt, Info, What do the status numbers mean and where can I find more information about them?
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> [RP Streaming Frontend,ERROR] [midas.cxx:17806:cm_write_event_to_odb,ERROR]
> cannot create key for bank "DATA" with tid 24 in ODB, db_create_key() status 309
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