12864串行通信驱动，AVR的，@16mhz，速度已经调到最大，有两个版本，第一个是基本底层驱动，第二个带了 反白 ，画图 函数，-12864 serial communication drivers, AVR' s, @ 16mhz, has been transferred to maximum speed, there are two versions, the first is the basic underlying driver, and the second with an