NB-IOT模块M5311发送数据到服务器，本代码为C代码，基于STM32F1系列单片机，工程为keil5工程，可以此为模板修改。(Nb-iot module m5311 sends data to the server, this code is C code, based on stm32f1 series single chip microcomputer, the project is keil5 project, which

通过m5311nbiot模块上传温湿度信息到指定服务器，可根据教程修改为连接onenet云平台。(Upload temperature and humidity information to the designated server through the m5311nbiot module, which can be modified to connect to the onenet cloud platform according