Yeah, our +/- 9 other machines all use either the regular parallel port or
5i25+7i76/7i77. So I'm just not used to working with setups that modify
more than just the files in their configuration folders.

On Sat, Jan 30, 2016 at 12:53 AM, Rafael <ra...@linwin.com> wrote:

>
>
> On 01/29/2016 07:18 PM, Chris Kelley wrote:
> > Greetings all,
> >
> > I recently "inherited" a little Smithy 622 CNC mill that had already been
> > converted to LinuxCNC.
> >
> > The machine has BLDC servos on the X and Y (run by the 7i39 on P1 of the
> > 5i20), a spindle encoder and analog drive (run from the 7i33TA on P2 of
> the
> > 5i20), and a stepper for the Z-axis (run along with the field I/O from
> the
> > Opto22 board on P3 of the 5i20).
> >
> > Before tonight, everything was working great. So, naturally, I had to
> mess
> > with it.
>
> We charge double for cases like this.
>
> >
> > The PC was running 2.5 on Ubuntu 10, so I decided to reload the machine
> > with a clean LinuxCNC 2.7/Debian Wheezy install (from the .iso).
> >
> > After the install, I copied over the (previously) working ini/hal config
> > files (attached). But, now when I try to start up LinuxCNC, I get an
> error
> > that the hm2_5i20.0.stepgen.00.enable pin cannot be found.
> >
> >>From what I can tell, even though the config is calling for 3 encoders, 2
> > 3-phase PWMs, 1 regular PWM, and 1 stepgen, only the encoders and 3-phase
> > PWMs are getting created.
> >
> > The only thing I can think of is that the previous owner was using a
> > modified version of the SVTP6_7I39.BIT firmware that allowed for the
> > creation of stepgens and regular pwmgens.
> >
> > Sadly, I did not think to back up the firmware folder before wiping the
> old
> > install.
>
> It's good to have a spare drive for fresh OS install when you are not
> sure about the outcome or when there is only one partition.
>
> >
> > Am I missing something, or do I need some sort of custom firmware file?
> >
> > -Chris
>
> While I cannot answer your question about the firmware issues, it's
> worthwhile to mention that all Linux installations benefit from
> partitioned disk drive so that you do not wipe out all files with
> reinstalling the OS. I hope this helps others in the future.
>
> For future installations I recommend to create at least 4 partitions:
> /      for the OS
> /var   for logs, package cache etc.
> swap
> /home  user home directories obviously.
> /tmp   optional.
>
> /home is the last partition for "the rest of the disk space.
>
> Before you upgrade the OS it's always good to save critical config files:
> mkdir /home/backup
> tar cvfp /home/backup/etc.tar /etc
> tar /home/backup/usr.local.bin.tar /usr/local/bin
> and so on.
>
> That way you preserve any config files in case you need to restore them
> later.
>
> If you run into disk space issues at some point later, you simply move a
> directory to /home and make a link. Typical example is:
>
> mkdir /home/var.cache
> (cd /var/cache; tar cfp - .) | (cd /home/var.cache; tar xvf -)
>
> cd /var
> rm -rf /var/cache; ln -s /home/var.cache cache
>
> cp -rp /lib/firmware /home   <- this would save /lib/firmware/hm2
> firmware among others.
>
> When partioning disk drive during new installation you only need to make
> sure that last partition is preserved and mounted under /home
>
> Disk drives are so low cost thee days that it's worthwhile to install OS
> on a new one and use the old one for backups.
>
> --
> Rafael
>
>
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