from machine import Pin, SoftI2C

sdaPIN=Pin(21)
sclPIN=Pin(22)

i2c=SoftI2C(sda=sdaPIN, scl=sclPIN, freq=10000)

devices = i2c.scan()
if len(devices) == 0:
    print("Sin dispositivos I2C")
else:
    print('Dispositivos I2C encontrados:',len(devices))
for device in devices:
    print("Dirección: ",hex(device))