What is the sequence of messages sent and received to an FPGA parallel
port servo card at each servo interval? I looked on the wiki and
couldn't find this information. What all goes on when controlling 3
servos over the parallel port?
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On 12 August 2011 16:56, cogoman wrote:
> What is the sequence of messages sent and received to an FPGA parallel
> port servo card at each servo interval? I looked on the wiki and
> couldn't find this information. What all goes on when controlling 3
> servos over the parallel port?
Are you talk
On 08/12/2011 02:10 PM, andy pugh wrote:
> This is a simplification. Address auto-indexing and translation ram
> (where contguous memory addresses link to non-contiguous registers)
> confuse the matter.
>
> Why are you asking?
This is a simplification. Address auto-indexing and translation ram
(wh
cogoman wrote:
> What is the sequence of messages sent and received to an FPGA parallel
> port servo card at each servo interval? I looked on the wiki and
> couldn't find this information. What all goes on when controlling 3
> servos over the parallel port?
>
Some of this may be considered
cogoman wrote:
> I expected EMC2 to read position data for 4 or 5
> axes from the P-port, read homing and limit switch states, do some
> calculations with the data, and then send velocity information for 5
> axes back to the P-port. I'm thinking about a stepper system that would
> use existi
On Fri, 2011-08-12 at 16:49 -0400, cogoman wrote:
... snip
>I have a seminal idea I'm trying to reason out (or away.) A while
> ago there was a thread here about interfacing to an ARM micro-controller
> on the parallel port. I expected EMC2 to read position data for 4 or 5
> axes from the
I just looked at it briefly. Actually not too briefly, but if what I
need is in there (and it might be) it's going to take a bit longer to
find and understand it. The AVR code isn't an issue since I was hoping
to use one of the much faster ARM micro-controllers out there.
Thanks.
On 08/
