Adding_Custom_MDI_Buttons - rmu75/linuxcnc-wiki GitHub Wiki

 In this example I've added a "Rapid to Home Position" button to my pyVCP panel.
 Make sure you understand what the G Codes will do before trying this!

 In your .ini file add the following lines:
 [HALUI]
 MDI_COMMAND = G0 X0 Y0 Z0

 To load the panel within axis add the following lines under the [DISPLAY] section:
 PYVCP=panel.xml

 Also, make sure you have the following line in the [HAL] section of your ini file:
 [HAL]
 HALUI=halui
 POSTGUI_HALFILE = postgui.hal 

 In your panel.xml file add the following lines:
 <button>
     <halpin>"rapid-to-home"</halpin>
     <text>"Rapid to Home"</text> 
     <font>('Fixed',16)</font>
 &lt;/button&gt;  

 In your postgui.hal file add the following lines:
 # set up the rapid to home button
 net remote-rapid-to-home halui.mdi-command-00 &lt;= pyvcp.rapid-to-home

 Once you test this and understand what it does you can change the input to your pendant by changing the pyvcp reference to your paraport pin.

 Note:
 If you wish to add more commands, then follow up MDI_COMMAND commands will appear in the postgui.hal file in halui.mdi-command-01 02 03 and so on.