Controlling feed with potentiometer

manuel2
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21 Apr 2016 20:53 #73698 by manuel2

Replied by manuel2 on topic Controlling feed with potentiometer

Hi,

i have the same problem. A+B are changing in HAL but no counting

How did you fix it?

My custom_postgui.hal:

net poti-a encoder.1.phase-A <= parport.0.pin-13-in-not

net poti-b encoder.1.phase-B <= parport.0.pin-15-in-not




setp halui.feed-override.scale 0.1

net poti-zaehler  encoder.1.counts halui.feed-override.counts

Greets from Germany
Manuel

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andypugh
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21 Apr 2016 20:58 #73700 by andypugh

Replied by andypugh on topic Controlling feed with potentiometer

Is the encoder update-counters function added to a realtime thread?
There are two functions, one for the base thread and one for the servo thread.
linuxcnc.org/docs/2.7/html/man/man9/encoder.9.html

Is the reset pin set to 1 by any chance?

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manuel2
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22 Apr 2016 14:17 #73715 by manuel2

Replied by manuel2 on topic Controlling feed with potentiometer

Hi Andy,

i think i haven't added the update-counters function to a realtime thread... Because i don't know how to do

The only thing I addet to my machine.hal is:

loadrt encoder num_chan=2

and to my machine.ini

[DISPLAY]
MIN_SPINDLE_OVERRIDE = 0.5
MAX_SPINDLE_OVERRIDE = 2


[HAL]
HALUI=halui

I have read the encoder-help you linked 3 times but my english is to bad to understand what I have to do that my encoder counts.

All these things I have changed are from here: wiki.linuxcnc.org/cgi-bin/wiki.pl?Spindleoverride. Not less and not more :whistle:

Greets Manuel

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andypugh
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22 Apr 2016 14:26 #73716 by andypugh

Replied by andypugh on topic Controlling feed with potentiometer

manuel2 wrote:
I have read the encoder-help you linked 3 times but my english is to bad to understand what I have to do that my encoder counts.

The "manpages" such as that linked contain the information about a HAL component in a standard format. If you are lucky the author of the component also gives some explanation of what the component does and how to use it.

"Synopsis" tells you how to load the component in to HAL. In your case this would be

loadrt encoder num_chan=1

"Functions" tells you which functions need to be added to real-time threads. In your case this would be

addf encoder.update-counters base-thread
addf  encoder.capture-position servo-thread

"Pins" lists all the HAL pins created by the component and what they do.
"Parameters" are setting which can be altered by the HAL file but can not be linked to HAL pins.

The following user(s) said Thank You: manuel2

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manuel2
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22 Apr 2016 14:49 #73719 by manuel2

Replied by manuel2 on topic Controlling feed with potentiometer

You are my man!! Thank you for the explanation, it works perfect! :silly:

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