import board
import busio

# Initialize and lock the I2C bus.
i2c = busio.I2C(board.SCL, board.SDA)
while not i2c.try_lock():
    pass

# Mimick the DCFURS badge code
try:
  i2c.writeto(0x44, bytes([0x15]), stop=False)
  result = bytearray(5)
  i2c.readfrom_into(0x44, result)
  print(result)
except OSError:
  print('Unknown error')

# Unlock the I2C bus when finished.  Ideally put this in a try-finally!
i2c.unlock()