GSM模块AT命令组装和AT命令响应解析程序。实现了自动组装标准AT命令并发送到GSM模块，同时可以提取GSM模块输出的所有AT命令，同时实现了大量AT命令响应的解析工作。主要的过程采用了Contiki的进程模型。-Making and parsing routine for AT commands of GSM module. It can automatically make standard AT commands and sent it to GSM module, while it c