ok, this looks like it works now, I missed the rps/rpm scaling:
http://git.mah.priv.at/gitweb/emc2-dev.git/shortlog/refs/heads/sim-spindle
this probably needs a bit of polishing for multiple instances
-m
Am 05.01.2012 um 08:47 schrieb Michael Haberler:
> well, I go for usability, so I take 6% overhead and working over 1% and
> broken any time.
>
> Anyway let's give it a try with your approach:
>
> the sim_spindle.comp didnt compile and needed a bit of polish
> I created a sim config to integrate it which 'runs' - speed rampup/rampdown
> and at-speed work fine and G33.1 doesnt block anymore
>
> the g33.1 and G84 cycles to funny things to spindle speed at the end of the
> cycle, so this still needs work
>
> - Michael
>
> ps: cant push to my repo right now, so here as a patch:
>
>
> <0001-sim-try-sim_spindle-component.patch>
>
>
> Am 05.01.2012 um 03:19 schrieb Jeff Epler:
>
>> IMO, it's a feature that the most basic sim configurations don't require
>> a base thread.
>>
>> On my system (2.8GHz AMD), rtapi_app takes ~1% CPU before the change and
>> about 6% after. Admittedly 6% isn't much, but it's worse than 1%.
>>
>> Perhaps we should write a simulated spindle that can work without
>> requiring a base thread.
>>
>> Here's a first stab at this. I looked at some traces in halscope but
>> didn't try any simulated rigid tapping.
>>
>> // ---------------------------------------------------------------------
>> component sim_spindle "Simulated spindle with index pulse";
>>
>> pin in float velocity-cmd "Commanded speed, in revolutions per second";
>> pin out float position-fb "Feedback position, in revolutions";
>> pin io bit index-enable "Reset position-fb to 0 at the next full rotation";
>>
>> license "GPL";
>>
>> function _;
>> ;;
>> #include <rtapi_math.h>
>>
>>
>> FUNCTION(_) {
>> double old_position = position;
>> double new_position = position + speed * fperiod;
>>
>> if(index_enable && (floor(old_position) != floor(new_position))) {
>> index_enable = false;
>> if(speed < 0)
>> new_position = new_position - ceil(new_position);
>> else
>> new_position = new_position - floor(new_position);
>> }
>>
>> position = new_position;
>> }
>> // ---------------------------------------------------------------------
>>
>> Jeff
>>
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