51单片机串口数据分包(2)

if(order_read) //执行读取命令，并发送数据 { // 发送数据帧：0xaa 0xab 0xaa 0xab 0x00 数据存储帧总包长 数据包类型 数据包（长度根据数据类型来判断） 0xee 0xee uchar Send_Head0; } } }

uchar Send_Head1; uchar Data_length1; uchar Data_length2; Send_Head0=0xaa; Send_Head1=0xab; Data_length1=0x00; Data_length2=Rec_len+9; order_read=0; switch(Addr) //地址解析 { case 0x01: Address=IAP_ADDRESS1;break; case 0x02: Address=IAP_ADDRESS2;break; case 0x03: Address=IAP_ADDRESS3;break; case 0x04: Address=IAP_ADDRESS4;break; } HexUartSend(Send_Head0); HexUartSend(Send_Head1); HexUartSend(Send_Head0); HexUartSend(Send_Head1); //发送帧头字节 HexUartSend(Data_length1); HexUartSend(Data_length2); //发送二字节的数据包长 HexUartSend(Addr); //发送数据地址信息 for(i=0;i