from machine import Pin, I2C
import time

# Scan I2C0 on GP0=SDA, GP1=SCL
i2c0 = I2C(0, scl=Pin(1), sda=Pin(0), freq=400000)

# Scan I2C1 on GP2=SDA, GP3=SCL
i2c1 = I2C(1, scl=Pin(3), sda=Pin(2), freq=400000)

while True:
    print("Scanning I2C buses...")
    devices0 = i2c0.scan()
    devices1 = i2c1.scan()

    if devices0:
        print("I2C0 Devices found:")
        for d in devices0:
            print(" - Address: 0x{:02X}".format(d))
    else:
        print("No devices found on I2C0")

    if devices1:
        print("I2C1 Devices found:")
        for d in devices1:
            print(" - Address: 0x{:02X}".format(d))
    else:
        print("No devices found on I2C1")

    print("-----------------------------")
    time.sleep(3)