1  """THIS EXAMPLE REQUIRES A SEPARATE LIBRARY BE LOADED ONTO YOUR CIRCUITPY DRIVE.
 2  This example requires the adafruit_irremote.mpy library.
 3  
 4  This example uses the IR receiver found near the center of the board. Works with another CPX
 5  running the cpx_ir_transmit.py example. The NeoPixels will light up when the buttons on the
 6  TRANSMITTING CPX are pressed!"""
 7  import pulseio
 8  import board
 9  import adafruit_irremote
10  from adafruit_circuitplayground.express import cpx
11  
12  # Create a 'pulseio' input, to listen to infrared signals on the IR receiver
13  pulsein = pulseio.PulseIn(board.IR_RX, maxlen=120, idle_state=True)
14  # Create a decoder that will take pulses and turn them into numbers
15  decoder = adafruit_irremote.GenericDecode()
16  
17  while True:
18      cpx.red_led = True
19      pulses = decoder.read_pulses(pulsein)
20      try:
21          # Attempt to convert received pulses into numbers
22          received_code = decoder.decode_bits(pulses, debug=False)
23      except adafruit_irremote.IRNECRepeatException:
24          # We got an unusual short code, probably a 'repeat' signal
25          continue
26      except adafruit_irremote.IRDecodeException:
27          # Something got distorted
28          continue
29  
30      print("Infrared code received: ", received_code)
31      if received_code == [66, 84, 78, 65]:
32          print("Button A signal")
33          cpx.pixels.fill((100, 0, 155))
34      if received_code == [66, 84, 78, 64]:
35          print("Button B Signal")
36          cpx.pixels.fill((210, 45, 0))