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78 lines
2.4 KiB
78 lines
2.4 KiB
2 years ago
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using System;
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using GPSBusiness.Helper;
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namespace GPSBusiness.BBGPSStandard
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{
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public class DataHead
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{
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public static int intSerialNo = 0;
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/// <summary>
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/// ��ȡ��ˮ��
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/// </summary>
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/// <returns></returns>
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public int GetSerialNo()
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{
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if (intSerialNo >= 255)
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{
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intSerialNo = 0;
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}
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intSerialNo++;
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return intSerialNo;
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}
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/// <summary>
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/// ��ϢID
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/// </summary>
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public UInt16 DataID;
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/// <summary>
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/// ��Ϣ������
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/// </summary>
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public UInt16 DataAttribute;
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/// <summary>
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/// �ն��ֻ���=centerid+mdtid
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/// </summary>
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public UInt16 CenterID;
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public byte[] MdtID;
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/// <summary>
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/// ��Ϣ��ˮ��
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/// </summary>
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public UInt16 DataSerialNo;
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/// <summary>
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/// ��Ϣ��
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/// </summary>
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public byte[] DataContent;
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public byte[] GetBytes()
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{
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this.DataAttribute = (UInt16)this.DataContent.Length;
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ByteBuilder bb = new ByteBuilder();
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bb.Append(ByteConvert.ToBytes(this.DataID));
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bb.Append(ByteConvert.ToBytes(this.DataAttribute));
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bb.Append(ByteConvert.ToBytes(this.CenterID));
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bb.Append(this.MdtID);
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bb.Append(ByteConvert.ToBytes(this.DataSerialNo));
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if (this.DataContent.Length > 0)
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{
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bb.Append(this.DataContent);
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}
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byte Crc = ByteConvert.GetCRC(bb.GetBytes(), 0, bb.GetBytes().Length);
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ByteBuilder bb2 = new ByteBuilder();
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bb2.Append(0x7e);
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bb2.Append(bb.GetBytes());
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bb2.Append(Crc);
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bb2.Append(0x7e);
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return bb2.GetBytes();
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}
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public void Frombytes(DataHead model, byte[] buffer)
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{
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model.DataID = ByteConvert.ToUInt16(buffer, 1);
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model.DataAttribute = ByteConvert.ToUInt16(buffer, 3);//buffer.Length - 15
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model.CenterID = ByteConvert.ToUInt16(buffer, 5);
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model.MdtID = ByteConvert.ToBytes(buffer, 7, 4);
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model.DataSerialNo = ByteConvert.ToUInt16(buffer, 11);
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if (buffer.Length > 15)
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{
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//��Ϣ������ �ݶ�Ϊ��Ϣ�峤��
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model.DataContent = ByteConvert.ToBytes(buffer, 13, this.DataAttribute);
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}
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}
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}
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}
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