def update_2(*args):
global pos_last
global sp_last
global run_last
global dat
r=run.get()
sp=speed.get()
pos=position.get()
if sp!=sp_last or pos!=pos_last or r!=run_last:
sp_last=sp
pos_last=pos
run_last=r
if r==True:
dat=[3, (pos>>8)&0xff, (pos&0xff), (sp&0xff)]
reply=ff32.readSPI(4, dat)
current.set(int(reply[0]<<8|reply[1]))
elif real_current != pos and r==True:
query()
window.after(150, update_2)
def query(*args):
global real_current
reply=ff32.readSPI(4, dat)
real_current=int(reply[0]<<8|reply[1])
current.set(real_current)