SPI2驱动LCD12848基于ST7567，采用Linux驱动的方式调用接口，驱动lcd的正常显示-SPI2 driver LCD 12848 based on ST7567, using Linux-driven way to call the interface to drive the normal display lcd

（已验证）利用动态库编程获取系统时间，简单的linux库文件生成和库文件调用(Using dynamic library programming to obtain system time, simple Linux library file generation and library file call.)