Andy Pugh has hacked up a test for the 64-bit only integers
in HAL. I am up to my eyeballs in gotta-get-done stuff and
can't see when I will have a chance to test it. The plan is
to set up one of my universal stepper boards for quadrature
step output, run that back into another axis' encoder input,
and explore the behavior when it overflows. The USC encoder
counter has a 24-bit counter that is NOT 2's complement.
So, it overflows from FFFF to 0 or 0 to FFFF. The current
driver sees this change of the top bits and properly
sign-extends to a 32-bit 2's complement signed integer in
the HAL variables. This test is to make sure there are no
issues with the overflow of the 24-bit hardware counter.
Andy has provided an iso live image of the 2.10 version with
these changes.
Does anyone have a Pico Systems USC board and are willing to
try this out?
If not, I could supply a USC board to somebody in the US who
is willing to try it. The wiring for this test should be
quite simple.
Thanks,
Jon
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