color2.py 文件源码

def get_color():
    """Returns the rgb color measurement as a tuple.

    Note: An exception is thrown if it fails to get a measurement from
    the click.
    """
    red = ctypes.c_uint16(0)
    green = ctypes.c_uint16(0)
    blue = ctypes.c_uint16(0)
    ret = _LIB.color2_click_get_color(ctypes.byref(red),
                                      ctypes.byref(green),
                                      ctypes.byref(blue))
    if ret < 0:
        raise Exception("color2 click get color failed")
    return (red.value, green.value, blue.value)