I had to set my machine to a certain state, when a new gcode file is loaded, also reset saved last motion.program.line. I did not find any example, suiting the requirements, so did it my own way. This pythoncode is creating a number from the current loaded filename. Unique enough for me.
e.g.
'rectangle_inside_helix_stepdown_no_stepover.ngc' returns
3724037, or
'HalfBallConc.ngc' returns
142356. A 'pin in s32' can handle those numbers
easy to make a comparaison oldfile/newfile and take action.
Code:
def newfile():
y=openfile.split('/')
z=(y[len(y)-1])
w=0
for x in range(0, len(z)):
y = (ord(z[x]))
w = w + (((x+1)**2) * y)
return w
