< 嵌入式系统编程源代码解析>>这本书所附的代码,有了几个典型的实例,但有些看不懂,不知它是基于什么的,不好入手搞.-<Embedded systems programming source code analysis>> attached to this book s code, with a few typical examples, but some can not read, I do not know what it is based on the