#!/usr/bin/python
import pigpio, time

def callback(g, l, t):
  print("Callback trigger "+ str(g)+ " " +str(l)+ " " +str(t))

pi = pigpio.pi()
if not pi.connected:  # Check connected
  print("Not connected to PIGPIO Daemon")
else:
  print("Connected to PIGPIO Daemon")
  pinStartGate = 20

  pi.set_mode(pinStartGate, pigpio.INPUT)
  pi.set_pull_up_down(pinStartGate, pigpio.PUD_DOWN)
  pi.set_noise_filter(pinStartGate, 50000, 50000)  # Debounce switch
  # pi.set_glitch_filter(pinStartGate, 50000)  # Debounce switch

  cb1 = pi.callback(pinStartGate, pigpio.FALLING_EDGE, callback)


while(True):
  print("Direct trigger" + str(pi.read(pinStartGate)))
  time.sleep(1)

Direct trigger0
Direct trigger0
Direct trigger1
Direct trigger1
Direct trigger0
Direct trigger0
Callback trigger 20 0 2414139526
Direct trigger1
Direct trigger1
Direct trigger0
Direct trigger0
Callback trigger 20 0 2418808728
Direct trigger1
Direct trigger1