ucOS-II应用源码：通过对串口编程来控制GPRS扩展板，实现发送固定内容的短信，接打语音电话等通讯模块的基本功能。利用开发平台的键盘和液晶屏实现人机交互。-ucOS-II application source : Serial Programming right to control the GPRS expansion boards, achieve this fixed content of the messages, then fight voice telephone communi