m128 接 gsm modem 用pdu 发中文短信 的流程。自己总结的，附带源码，仅供参考哦-gsm modem access m128 made by Chinese SMS pdu process. Their own summary, with source code, for reference only, oh! !

单片机控制GSM模块（发短信，打电话等）-GSM single-chip control module (send text messages, phone calls)

用单片机控制GSM模块接发短信，从而做出相应的相应事件，本程序采用的是标准的AT指令集进行编写-Control with single-chip GSM module to send and receive SMS, so as to make the appropriate corresponding event, the program uses the standard AT command set to be written

本程序代码主要功能是使用stm32微控制器调试华为公司Mg301模块,使它能够发短信、打电话和连接服务器等功能。-This Program code is aimed at using Stm32 Micorocontroller to debug the module of Mg301,which is the product of HUAWEI.Its function inculdes sending messages,dialling numbers,and connecting