wuzhl2018 / cx_schLinks
在嵌入式软件开发当中，常常第一步就是设计整个系统的架构。有基于OS的，也有裸机的。我们先拿裸机说事儿，我想很多人在做单片机的裸机开发（甚至基于OS）时脑海里根本没有设计架构的想法，从来都是while（1）循环到底，能写点状态机已经算是基础扎实的人物了。那么问题来了，while(1)是什么？在嵌入式设计模式里是怎么给while（1）定义的。《C嵌入式编程设计模式》一书中将while(1)称之为“超循环模式”，也就是嵌入式的入门傻瓜模式。在此模式下即使有前台监听也势必会导致系统实时性傻逼，从硬件上分析：while（1）的高CPU占用率也使得功耗大大提高。当然存在即合理，超循环模式在安全性和可靠性上是非常占优势的。结构简单也易于理解，这对于安全性能要求较高的系统上还是非常具有吸引力的
☆12Updated 5 years ago
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