液晶模块1602的驱动，自己编写的，通过了变异-LCD1602 driver

代码包含了3个针对cortex-M1内核CPU的实例。他们使用的是“microlib“C库变异的大小最小化了图像，见3章（“C微库”）在rvct图书馆指南为进一步的信息。-contains a number of Examples targeted to the Cortex-M1. They are built using the microlib C library variant to minimize the size of the image. See Chapter 3

STM32F407 定时器使用寄存器版本——参考正点原子，编译有报错的请自己检查变异环境(The STM32F407 timer uses a register version - refer to the positive point atom, compiling the wrong message and checking the mutation environment for yourself)