用C标写的串口程序，简单实用，可嵌入系统调用,C standard serial written procedures, a simple and practical for embedded systems call

IEC61850开源实现库，包含头文件、函数文件和测试例程文件(his library provides an implementation of IEC61850 on top of the MMS (Manufacturing Message Specification) protocol in standard C. It also provides support for intra-substation communication via GOOSE. The goal of this