 18 Aug 2005, Konstantin Olchanski, Bug Fix, fix race condition between clients on run start/stop, pause/resume
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It turns out that the new priority sequencing of run state transitions had a
flaw: the frontends, the analyzer and the logger all registered at priority 500
and were invoked in essentially a random order. For example the frontend could
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23 Aug 2005, Konstantin Olchanski, Info, new mvmestd api
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For some time now, we have been thinking of updating the programming interface
for the VME bus interface drivers- mvmestd.h.
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 10 Sep 2005, Konstantin Olchanski, Info, new mvmestd api
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> Good that you brought up the MIDAS VME API again, since this is still not complete, but
> has to be completed soon.
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19 Sep 2005, Konstantin Olchanski, Info, Added driver for the Wiener CC-USB CAMAC interface
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Commited to CVS is the preliminary driver for the Wiener CC-USB CAMAC interface.
The driver implements all the mcstd.h camac access functions, except for those
not supported by hardware (8-bit operations, interrupts) and a few esoteric
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14 Dec 2005, Konstantin Olchanski, Bug Report, misc problems
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I would like to document a few problems I ran into while setting up a new
experiment (two USB interfaces to Alice TPC electronics, plus maybe a USB
interface to CAMAC). I am using a midas cvs checkout from last October, so I am
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22 Dec 2005, Konstantin Olchanski, Info, midas max event size?
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My TPC events are fairly large: 18 FEC cards * 128 channels per card * 2 Kbytes
per channel = about 4 Mbytes. In my
frontend, when I request this event size, MIDAS complaints (in mfe.c) that it is
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22 Dec 2005, Konstantin Olchanski, Info, How do I do custom event building?
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It turns out the the standard event builder fragment matching algorithm cannot
be used in my TPC application. I have two TPC-USB interfaces, which lack any
"busy" or synchronization logic. I send the hardware trigger into both
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23 Dec 2005, Konstantin Olchanski, Bug Report, minor changes to run transition code
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> Minor changes to run transitions code:
> - fail transition if cannot connect to one of the clients
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28 Dec 2005, Konstantin Olchanski, Suggestion, Handling multiple identical USB devices
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When I wrote the musbstd.h "open" method, I kind of punted on the problem of
handling multiple identical USB devices. Instead of a real solution, I added an
"instance" parameter, which allows one to "open" the "first", "second", etc USB
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30 Dec 2005, Konstantin Olchanski, Bug Report, mhttpd "edit on start" broken for arrays
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If a variable under "/experiment/edit on start/" is an array, it is correctly
offered for editing on the "start run page", but then all elements in the array
end up set to the value of the first element.
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07 May 2006, Konstantin Olchanski, Bug Fix, Update & add VME drivers
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I commited fixes for a few minor compilation errors in the VME drivers
(vmicvme.c, etc)
I also added new drivers for the v513 latch and v560 scaler that I wrote for
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07 May 2006, Konstantin Olchanski, Bug Report, cm_register_transition gyrations
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I am debugging a Rome-based DAQ system setup by Pierre A. (the system does not
work because of bugs in Rome).
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11 May 2006, Konstantin Olchanski, Bug Report, MIDAS and Fedora 4
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Fellow Midasites- we are receiving reports that current Midas sources do not compile on Fedora 4 (and 5?)
with errors "invalid lvalue in assignment". It looks like the new compilers reject what looks to my eye like
perfectly valid C code that we have been writing since the beginning of C. Any suggestions on the best fix?
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18 May 2006, Konstantin Olchanski, Bug Fix, removed a few "//" comments to fix compilation on VxWorks
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Our VxWorks C compiler (gcc-2.8-something) does not like the "//" comments. Luckily, on VxWorks, we
only compile a small subset of midas, so there is no point in banning all "//" comments. But I did have to
convert a couple of them to /* commens */ in odb.c to make it compile. Changes to odb.c commited. K.O. |
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25 May 2006, Konstantin Olchanski, Bug Fix, fix crash in xml odb load
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There is a crash in odbedit when loading some xml odb files: a missing check for NULL pointer when
loading an array of strings and one of the array elements is blank. This check is present when loading
other string values. Here is the diff:
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30 May 2006, Konstantin Olchanski, Bug Report, badness with vxworks/ppc
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It appears that the latest version of MIDAS malfunctions on PowerPC/VxWorks
machines, below are two problem reports. As reported, previous versions of MIDAS
work fine, I guess that reduces the probability of it being buggy user code. At
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31 May 2006, Konstantin Olchanski, Bug Fix, mhist could not look at array data
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When using mhist interactively, I could not look at array data:
1) if the array is the only variable, the question "what array index to use?"
was not asked, zero was assumed,
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08 Jun 2006, Konstantin Olchanski, Bug Fix, fix compilation of musbstd.h, add it back to libmidas
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I fixed the compilation of musbstd.h (it required -DHAVE_LIBUSB on Linux, but
nothing knew about defining it) and put musbstd.o back into libmidas (USB
support should be part of the standard base midas library). K.O. |
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08 Jun 2006, Konstantin Olchanski, Bug Fix, commit latest ccusb.c CAMAC-USB driver
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I commited the latest driver for the Wiener CCUSB USB-CAMAC driver. It
implements all functions from mcstd.h and has been tested to be plug-compatible
with at least one of our CAMAC frontends. K.O. |
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08 Jun 2006, Konstantin Olchanski, Bug Fix, updated vmicvme driver
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I commited the latest VMIC VME driver we use at TRIUMF. It has working support
for D32 and D64 DMA and can move data from the SIS3820 multiscaler through the
MIDAS frontend at > 30 Mbytes/sec on our VMICVME-7805 machines. The actual DMA
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