1  # SPDX-FileCopyrightText: 2021 Kattni Rembor for Adafruit Industries
 2  # SPDX-License-Identifier: MIT
 3  """CircuitPython I2C Device Address Scan"""
 4  import time
 5  import board
 6  
 7  # To use default I2C bus (most boards)
 8  i2c = board.I2C()
 9  
10  # To use the STEMMA QT connector (most boards)
11  # i2c = board.STEMMA_I2C()
12  
13  # To create I2C bus on specific pins
14  # import busio
15  # i2c = busio.I2C(board.GP1, board.GP0)    # Pi Pico RP2040
16  
17  while not i2c.try_lock():
18      pass
19  
20  try:
21      while True:
22          print(
23              "I2C addresses found:",
24              [hex(device_address) for device_address in i2c.scan()],
25          )
26          time.sleep(2)
27  
28  finally:  # unlock the i2c bus when ctrl-c'ing out of the loop
29      i2c.unlock()