ARM嵌入式系统开发--软件设计与优化随书源代码。开发环境asm+c，带mmu的小操作系统。-ARM Embedded System Development-- software design and optimization of the source code with the book. Development Environment asm2 c, the small band mmu operating system.

程序在主程序中没有连续改变小灯的状态，而在开始运行时将其关闭，延时后点亮。实验现象是一只小灯不断闪烁，这是因为程序中启动了看门狗，看门狗时间长度为1 秒，如果1 秒内没有复位看门狗的话，系统将复位。系统复位后再次开启看门狗，1 秒后复位。-Procedures in the main program there is no continuous change in the status of small lights, and at t