import time
import board
import busio

# I2C setup for Raspberry Pi Pico
i2c = busio. I2C(scl=board.GP5, sda=board.GP4)

while True:
    timeout = 1 # seconds 
    start_time = time.monotonic()

    # Try to lock I2C with timeout
    while not i2c.try_lock():
        if time.monotonic() - start_time > timeout:
            print("No I2C devices found!")
            break
    else:
        try:
            devices = i2c.scan()
            if devices:
                print("I2C devices found:", [hex(device) for device in devices])
            else:
                print("No I2C devices found!")
        finally:
            i2c.unlock()
    time.sleep(2)