import appuifw, e32
 
keyboard_state={}
 
def callback(event):
  if event['type'] == appuifw.EEventKeyDown:
    keyboard_state[event['scancode']]=True
  elif event['type'] == appuifw.EEventKeyUp:
    keyboard_state[event['scancode']]=False
 
def get_key_state(keycode):
  return keyboard_state.get(keycode, False)
 
canvas=appuifw.Canvas(event_callback=callback)
appuifw.app.body=canvas
 
while 1:
  e32.ao_sleep(3)
  if get_key_state(16)==1: # 16 - код кнопки "вверх"
    appuifw.note('кнопка up нажата')