有人也许和我一样比较心急，想尽快知道如何去写一个具体的驱动程序，这里，假设您对驱动程序已经有比较好的了解，告诉大家一个快速上路的方法-Some may like me more anxious, wants to know how to write a specific driver, here, on the assumption that your driver has a better understanding, tell you a quick way of the road