Blink LED 13
    @return: No Return Value

async def blink(my_board):
    """
    Blink LED 13
    @return: No Return Value
    """
    # set the pin mode
    await my_board.set_pin_mode(13, Constants.OUTPUT)

    for i in range(0, 5):
        await my_board.digital_write(13, 1)
        await asyncio.sleep(1)
        await my_board.digital_write(13, 0)
        await asyncio.sleep(1)