运行在STM32单片机上的GPRS模块上网，利用UDP协议传输与接收信息。虽然是一个项目中的一部分，但摘录部分基本可以独立-Running on STM32 MCU GPRS module on the Internet, using the UDP protocol to transmit and receive information. Although it is a part of the project, but some of the basic can be independent