# start thread running self.start()
Notes:
def pressed(self):
if self._pressed: # clear the pressed flag now we have detected it self._pressed = False return True else: return False def run(self): previous = None while 1: # read gpio channel current = GPIO.input(self.channel) time.sleep(0.01) # wait 10 ms
# detect change from 1 to 0 (a button press) if current == False and previous == True: self._pressed = True # wait for flag to be cleared while self._pressed: time.sleep(0.05) # wait 50 ms previous = current
def onButtonPress():
print('Button has been pressed!') # create a button thread for a button on pin 11 button = Button(11) while True: # ask for a name and say hello name = input('Enter a name (or Q to quit): ') if name.upper() == ('Q'): break print('Hello', name) # check if button has been pressed if button.pressed(): onButtonPress()
Human-computer interfacing
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