public byte[] CreateHeader(UpdateFileParam FilePar, int nSegmentSize,int nUpdateDevCnt)
{
byte[] header = new byte[15];//无CRC16和转义
header[0] = 0xFA;
header[1] = 0x00;
header[2] = 0x00;
header[3] = 0; //帧号
byte[] validLen = UInt16ToBcd((ushort)9);//命令字2D有效数据长度9
//BCD
header[4] = validLen[0];
header[5] = validLen[1];
//有效数据
header[6] = 0x2D;
header[7] = (byte)FilePar.eType;
header[8] = nUpdateDevCnt > 0 ? (byte)2 : (byte)0;
byte[] FileSize = BitConverter.GetBytes(FilePar.FileLen);
header[9] = FileSize[3];
header[10] = FileSize[2];
header[11] = FileSize[1];
header[12] = FileSize[0];
byte[] segmentSize = BitConverter.GetBytes((UInt16)nSegmentSize);
header[13] = segmentSize[1];
header[14] = segmentSize[0];
return header;
}
public byte[] CreateBody(UpdateFileParam FilePar, int nOffset,int nBodyLen)
{
m_nFrameId++;
if (m_nFrameId >= 0x7F)
m_nFrameId = 0;
int nPacketLen = nBodyLen + 12;//无CRC16和转义
byte[] bodyData = new byte[nPacketLen];
bodyData[0] = 0xFA;
bodyData[1] = 0x00;
bodyData[2] = 0x00;
bodyData[3] = (byte)m_nFrameId; //帧号
//命令字2E有效数据长度
bodyData[4] = 0;
bodyData[5] = 0;
//有效数据
bodyData[6] = 0x2E;
bodyData[7] = (byte)FilePar.eType;
byte[] byteOffset = BitConverter.GetBytes(nOffset);
bodyData[8] = byteOffset[3];
bodyData[9] = byteOffset[2];
bodyData[10] = byteOffset[1];
bodyData[11] = byteOffset[0];
byte[] fileData = ReadBinFile(FilePar.strFileFullPath,nOffset,nBodyLen);
Buffer.BlockCopy(fileData, 0, bodyData, 12, fileData.Length);
//最后一包使用实际长度
if(fileData.Length == nBodyLen)
{
byte[] validLen = UInt16ToBcd((ushort)(nBodyLen + 6));//命令字2E有效数据长度
bodyData[4] = validLen[0];
bodyData[5] = validLen[1];
return bodyData;
}
else
{
byte[] validLen = UInt16ToBcd((ushort)(fileData.Length + 6));//命令字2E有效数据长度
bodyData[4] = validLen[0];
bodyData[5] = validLen[1];
int nRealLen = 12 + fileData.Length;
byte[] retBuffer = new byte[nRealLen];
Buffer.BlockCopy(bodyData, 0, retBuffer, 0, nRealLen);
return retBuffer;
}
}
private void ReadUpdateFileVersion()
{
lstUpdateFile.Clear();
string[] updatefiles = Directory.GetFiles(Application.StartupPath, "*.bin",SearchOption.TopDirectoryOnly);
foreach (string strFileName in updatefiles)
{
//文件名固定n-ver.bin(如键盘程序为2-K.ZHY.1.23.48.bin)
int nPos = strFileName.LastIndexOf("\\") + 1;
string strFileParse = strFileName.Substring(nPos, strFileName.LastIndexOf(".bin") - nPos);
int nSplit = strFileParse.IndexOf("-");
if (nSplit != -1)
{
int nType = Convert.ToInt32(strFileParse.Substring(0, nSplit));
string strVersion = strFileParse.Substring(nSplit + 1, strFileParse.Length - 2);
if (nType >= 1 && nType <= 4)
{
UpdateFileParam par = new UpdateFileParam();
FileInfo fileInfo = new FileInfo(strFileName);
par.eType = (UpdateFileType)nType;
par.strFileFullPath = strFileName;
par.FileLen = Convert.ToInt32(fileInfo.Length);
par.FileVersion = strVersion;
lstUpdateFile.Add(par);
}
}
}
}
private byte[] GetVerData(UpdateFileParam fileInfo)
{
if (string.IsNullOrEmpty(fileInfo.FileVersion))
return null;
int nLen = fileInfo.FileVersion.Length + 2;
byte[] retVal = new byte[nLen];
retVal[0] = (byte)fileInfo.eType;
retVal[1] = (byte)fileInfo.FileVersion.Length;
byte[] VerData = Encoding.ASCII.GetBytes(fileInfo.FileVersion);
Buffer.BlockCopy(VerData, 0, retVal, 2, VerData.Length);
return retVal;
}