 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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01 Dec 2024, Stefan Ritt, Bug Report, EQ_PERIODIC-only equipment ?
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There is no requirement that you pair an EQ_PERIODIC with an EQ_TRIGGER. Take for exmaple
midas/examples/experiment/frontend.cxx
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02 Dec 2024, Stefan Ritt, Bug Report, ODB key picker does not close when creating link / Edit-on-run string box too large
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> Actual result:
> The key picker does not close.
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02 Dec 2024, Stefan Ritt, Bug Report, ODB key picker does not close when creating link / Edit-on-run string box too large
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> Another more minor visual problem is the edit-on-start dialog. There seems to be no upper bound to the
> size of the text box. In the attached screenshot, ShortString has a maximum length of 32 characters,
> LongString has 255. Both are empty at the time of the screenshot. Maybe, the size should be limited to a
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02 Dec 2024, Stefan Ritt, Forum, "Safe" abort of sequencer scripts
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The atexit() function has been implemented in the current develop branch of midas, see
https://daq00.triumf.ca/MidasWiki/index.php/Sequencer#ATEXIT_subroutine
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06 Dec 2024, Stefan Ritt, Info, New slow control framework "mdev" 
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A new slow control mini-framework has been developed for MIDAS and been successfully tested in the Mu3e experiment. It
might be suited for other experiments as well.
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10 Dec 2024, Stefan Ritt, Suggestion, Comma-separated indices in alarm conditions
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These kind of alarm conditions have been implemented and committed. The documentation at
https://daq00.triumf.ca/MidasWiki/index.php/Alarm_System
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12 Dec 2024, Stefan Ritt, Suggestion, New alarm sound flag to be tested
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We had the case in MEG that some alarms were actually just warnings, not very severe. This happens for example if we calibrate our detector
once every other day and modify the hardware which actually triggers the alarm for about an hour or so.
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