该文档描述了protothreads的使用方法。protothreads是一个由国外牛人Adam Dunkels写的原始线程文件，它提供了一种实现轻型线程的功能，不用线程堆栈，简单方便-This document describes the use of protothreads. protothreads abroad is a cattle Adam Dunkels wrote the original thread file, which provides an implementati