随着移动设备的流行和发展，嵌入式系统已经成为一个热点。它并不是最近
出现的新技术，只是随着微电子技术和计算机技术的发展，微控制芯片功能越来
越大，而嵌入微控制芯片的设备和系统越来越多，从而使得这种技术越来越引人
注目。它对软硬件的体积大小、成本、功耗和可靠性都提出了严格的要求。嵌入
式系统的功能越来越强大，实现也越来越复杂，随之出现的就是可靠性大大降低。
最近的一种趋势是一个功能强大的嵌入式系统通常需要一种操作系统来给予支
持，这种操作系统是已经成熟并且稳定的，可以是嵌入式的 Linux，WINCE 等
等。本文所要研究的就是基于 ARM 嵌入式系统的交通灯系统的设计与实现。本
设计采用了 ARM32 位的 Cortex-M3 CPU 的内核的 STM32 作为核心处理器。
关键词：嵌入式 交通灯 STM32f103 ARM
With the popularity and development of mobile devices, embedded system has
become a hotspot. It is not a new technique appeared recently, only with the development
of microelectronics and computer technology, micro chip control functions more and more,
more and more equipment and systems and embedded micro control chip, making the
technology more attract sb.'s attention. Hardware and software of its size, cost, power
consumption and reliability have made stringent requirements. The function of embedded
system is more and more powerful, and more and more complicated, the reliability
appears is greatly reduced. A recent trend is a powerful embedded systems usually
require an operating system to support, the operating system is already mature and stable,
can be embedded Linux, WINCE and so on. This paper is to study the design and
Realization of the traffic light system based on ARM embedded system. This design uses
the ARM32 bit Cortex-M3 CPU kernel STM32 as the core processor.
