说明：  基于事件驱动的串口通讯控件 消息帧数据格式: 1 0 A B X X 其中 10 为消息标识, AB表示文本长度,L=A*100+B XX为配位字符,任意 控制帧数据格式 0 1 A B M N 其中 01为控制标识, AB为请求标识 MN为附加标识 11表示请求对方接收文件,M表示描述字串中文件名子串的长度 N表示描述字串中文件大小子串的长度 10通知对方放弃传输 00通知文件传输完毕 01请求对方发送数据, MN为10请求发送下一个 MN为00请求重发 数据帧数据格式 0 0 A B M N 其中 00 为数据标识, AB表示数据长度,L=A*100+B MN为校验,M*100+N=A+B
(based on event-driven serial communication control information data frame format : 1 0 A B X X 10 news for identification, said AB text length, L = A* 100 B XX Coordination of characters arbitrary control data frame format 0 1 A B M N which control 01 of identification, AB logo MN request for additional identification to request the other 11 said receiving the document, M said documents describing string name, string length N said Description Size string substring length of 10 to notify each other up 00 disposable transmission notice file transfer completed 01 requests each other this data, MN request to send 10 MN under a request for renewal of 00 data frame data format 0 0 A B M N which number 00 According to the labels, AB indicates that the data length, L = A* B 100 MN for verificati)