SBrick Remote Control

A fast incursion in Python and Tkinter (a very easy GUI library for those like me who abuse from Google-Copy-Paste) so I can play with SBrick from my Ubuntu laptop without the command line:

#!/usr/bin/env python 

from Tkinter import *
from time import sleep
from subprocess import call

def quit():
  global Window
  Window.destroy()

  return;

def STOP():

  call("gatttool -b 00:07:80:7F:28:E1 -i hci0 --char-write --handle=0x0025 --value=0002",shell=True)
  call("gatttool -b 00:07:80:7F:28:E1 -i hci0 --char-write --handle=0x0025 --value=0003",shell=True)
  return

def NORTH():

  time=scale.get()
  call("gatttool -b 00:07:80:7F:28:E1 -i hci0 --char-write --handle=0x0025 --value=010301FF",shell=True)
  call("gatttool -b 00:07:80:7F:28:E1 -i hci0 --char-write --handle=0x0025 --value=010200FF",shell=True)
  sleep(time)
  STOP()
  return

def SOUTH():

  time=scale.get()
  call("gatttool -b 00:07:80:7F:28:E1 -i hci0 --char-write --handle=0x0025 --value=010300FF",shell=True)
  call("gatttool -b 00:07:80:7F:28:E1 -i hci0 --char-write --handle=0x0025 --value=010201FF",shell=True)
  print("Backward")
  sleep(time)
  STOP()
  return

def EAST():

  time=scale.get()
  call("gatttool -b 00:07:80:7F:28:E1 -i hci0 --char-write --handle=0x0025 --value=010301FF",shell=True)
  call("gatttool -b 00:07:80:7F:28:E1 -i hci0 --char-write --handle=0x0025 --value=010201FF",shell=True)
  print("RIGHT")
  sleep(time)
  STOP()
  return

def WEST():

  time=scale.get()
  call("gatttool -b 00:07:80:7F:28:E1 -i hci0 --char-write --handle=0x0025 --value=010200FF",shell=True)
  call("gatttool -b 00:07:80:7F:28:E1 -i hci0 --char-write --handle=0x0025 --value=010300FF",shell=True)
  sleep(time)
  STOP()
  return


Window = Tk()
Window.title("SBrick Remote Control v0.1")

B_North = Button(text = "N", command = NORTH)
B_North.grid(row=0, column=1)

B_West = Button(text = "W", command = WEST)
B_West.grid(row=1, column=0)

B_STOP = Button(text = "STOP", command = STOP)
B_STOP.grid(row=1, column=1)

B_East = Button(text = "E", command = EAST)
B_East.grid(row=1, column=2)

B_South = Button(text = "S", command = SOUTH)
B_South.grid(row=2, column=1)

scale = Scale(Window, from_=0.125, to=2.5, digits=3, resolution=0.125, orient=HORIZONTAL, length=250, label="Time")
scale.grid(row=3,column=0,columnspan=3)

B_QUIT = Button(text = "QUIT", command = quit)
B_QUIT.grid(row=4, column=1, )

mainloop()