import box0
import time

# open the device (Box0 USB open a supported device)
dev = box0.usb.open_supported()

# open DIO (digital Input/Output) module
dio = dev.dio()

dio.basic_prepare()

# initalize the pin
pin0 = dio.pin(0)
pin0.output()
pin0.low()
pin0.enable()

dio.basic_start()

try:
    # perform a loop and toggle the pin 2 times per second
    while True:
        pin0.toggle()
        time.sleep(.5)
except KeyboardInterrupt:
    # user want to exit
    pass

dio.basic_close()

# close the resources
dio.close()
dev.close()