import machine
sdaPIN = machine.Pin(21)
sclPin = machine.Pin(22)

i2c = machine.I2C(sda=sdaPIN, scl=sclPin, freq = 10000)

devices = i2c.scan()
if len(devices) == 0:
    print("No I2C device")
else:
    print("I2C device found.", devices)
for a in devices:
    print("Address: ",hex(a))