On 4/6/15 9:10 AM, Eric H. Johnson wrote:
> Is SVST4_4S.BIT different from SVST4_4.BIT. I assumed the 'S' meant that it
> was for the small (200K) FPGA. SVST4_4.BIT was the only one that installed
> with the 7i43-small package.
There are two SVST4_4 bit files, one for the 400k FPGA ("big", aka "B")
and one for the 200k FPGA ("small", aka "S").
The problem you describe is a bug in the hostmot2 firmware package,
which i think is now fixed. It was due to a change in how/where the
firmware debs package the files. It's better now, but old versions of
linuxcnc don't know about the new better paths. The problem is fixed in
the latest version of the hostmot2 debs by adding back the symlinks to
the old firmware locations that i erroneously removed.
Try 0.8.21 from the hm2 buildbot:
deb http://buildbot.linuxcnc.org/hm2 hm2-firmware v0
If that works for you then i'll update the debs at www.linuxcnc.org.
> If I drop the "hm2/7i43/" from the path in the ini file, it still does not
> find the BIT file, at least any place I have tried to put it under linuxcnc
> or linuxcnc/config. If I add an explicit path in the ini file ( /home/...),
> it says file name exceeds 30 characters.
Yeah, firmware path lengths are quite restricted by the linux kernel.
When i was originally implementing kernel firmware loading in our
hostmot2 driver i asked the kernel folks to relax the path length limit
so that we could have our firmwares in our home directories, but they
(probably correctly) refused and told us to install them in
/lib/firmware like everyone else. Which is what we do now.
--
Sebastian Kuzminsky
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