SPI驱动模型参考 http://blog.chinaunix.net/uid-21501855-id-5211900.html https://blog.csdn.net/droidphone/article/details/24353293 https://blog.csdn.net/lizuobin2/article/details/51735963 https://www.cnblogs.com/fly-fish/archive/2011/10/26/2225592.html
