led.py 文件源码

def get_mode(index):
    """Returns the mode of a LED.

    The LED must be initialised before calling this function.

    index: must be an integer in range 0..7

    Note: An exception is thrown if it fails to retrieve the mode of a LED.
    """
    mode = ctypes.c_uint8(0)
    ret = _LIB.led_get_mode(index, ctypes.byref(mode))
    if ret < 0:
        raise Exception("led get mode failed")
    return mode.value