实现相对编程，即代码可以在内存中任意移动，我们用了一个技巧，就是用call指令调用子程序,-Achieve relative programming, that code can be any mobile in memory, we used a technique is to use the subroutine call instruction,

第三方控件，勾子程序，包含源码，欢迎下载,-Third-party controls, hook routines, including source code, please download

一个使单片机和上位机通过串口通信的子程序-Com output of a subroutine, using a serial port connection makes the MCU and PC communication software