public static NetworkLayerProtocol Parse(DataLinkLayer dataLinkData)
{
NetworkLayerProtocol networkData = new NetworkLayerProtocol();
networkData.N_AI = dataLinkData.Address;
networkData.N_PCIType = (byte)(dataLinkData.ListDllData[0] & 0xF0);
if (networkData.N_PCIType == 0x01)
{
networkData.SF_DL = (byte)(dataLinkData.ListDllData[0] & 0x0F);
if ((networkData.SF_DL > 7) || (networkData.SF_DL == 0))
{
throw new Exception("单帧长度错误");
}
networkData.N_PCI = networkData.GetSFN_PCI(networkData.N_PCIType, networkData.SF_DL);
dataLinkData.ListDllData.RemoveRange(0, 1);
networkData.N_Data = dataLinkData.ListDllData;
}
else if (networkData.N_PCIType == 0x03)
{
networkData.FC_FS = (byte)(dataLinkData.ListDllData[0] & 0xF0);
if (networkData.FC_FS == 3)
{
throw new Exception("Buffer 溢出");
}
//networkData.N_PCI = networkData.GetFCN_PCI();
//dataLinkData.L_Data.RemoveRange(0, 3);
//networkData.N_Data = dataLinkData.L_Data;
}
else
{
if (networkData.N_PCIType == 0x01)
{
networkData.FF_DL = networkData.GetFF_DL(dataLinkData.ListDllData[0], dataLinkData.ListDllData[1]);
if ((networkData.FF_DL < 8) || (networkData.FF_DL > 0xFFF))
{
throw new Exception("首帧长度错误");
}
networkData.N_PCI = networkData.GetFFN_PCI(networkData.N_PCIType, networkData.FF_DL);
dataLinkData.ListDllData.RemoveRange(0, 2);
networkData.N_Data.AddRange(dataLinkData.ListDllData);
}
else
{
networkData.CF_SN = (byte)(dataLinkData.ListDllData[0] & 0xF0);
if ((networkData.CF_SN > 15) || (networkData.CF_SN < 0))
{
throw new Exception("连续帧序号错误");
}
networkData.N_PCI = networkData.GetCFN_PCI(networkData.N_PCIType, dataLinkData.ListDllData[0]);
dataLinkData.ListDllData.RemoveRange(0, 1);
networkData.N_Data.AddRange(dataLinkData.ListDllData);
}
}
return(networkData);
}
public void NetworkLayerToApplicationLayer(NetworkLayerProtocol networkLayer)
{
//ApplicationLayerProtocol app = ApplicationLayerProtocol.Parse(networkLayer);
}
public List <byte> getDataFromNetworkLayer(NetworkLayerProtocol networkLayerFrame)
{
A_Data = networkLayerFrame.N_Data;
return(A_Data);
}
