Re: Aux IO

[Paul <paul.corner-at-tesco.net>]

Hi Jon

For a three axis machine, I would disagree with you - It should be almost 
trivial to use the upper few IO lines by user space programs (such as 
bridgeportio). As long as emcmot is not using these lines, no race conditions 
will exist. The only area of contention would be setting up the direction of 
the port chosen. But with carefull planning, this will not be an issue.

Regards, Paul.


On Thursday 25 Jul 2002 6:29 am, Jon Elson wrote:
> This is not so easy.  The auxilliary I/O, such as spindle, coolant, etc.
> are run by Linux, ie.
> not real-time, code, while the axis motion is run by the real-time
> section.  They don't
> coordinate access to I/O ports, so there could be some problems with
> doing this on the
> STG card.