Start G-Code , in firmware not slicer, does this exists ?

Hi.
i've been wanting to remove my start gcode from the slicer in order to be able to use the same gcode file on multiple printers.
typically i can use the same temps and speeds, but the start up code differs in terms of tool cleaning and nozzle prime position.
So i would like to have the start g-code in firmware and maybe call a Gxxx or Mxxx to activate this start gcode.
that way it's possible to put the homing, probing , move Z, goto Xxx Yxx, extrude , or whatever the needs might be, everytime a print is started.

Does this functionality exist already ?
i've seen the Autostart, but this is only for power up,and requires an SD, and i want it to run every time i start a print (typically from SD)
and there's also the CUSTOM_USER_MENUS , but these have to be activated through the LCD.

Anybody did this already ?

You might be able to use the M23 gcode, to execute another file, from within the primary gcode file. I am not sure if this will cause any problems though.

But to be able to use M23 from within a gcode file, would allow for the functionality that you request.

Quote
MrAlvin

You might be able to use the M23 gcode, to execute another file, from within the primary gcode file. I am not sure if this will cause any problems though.  

But to be able to use M23 from within a gcode file, would allow for the functionality that you request.

Thanks alot.
Not sure this if i can make this work the way i was thinking but 'll give it a go