/// <summary>
/// 通过“消息ID”和“参数列表”获取消息报文字节数组
/// </summary>
/// <param name="msgId">
/// 消息ID
/// <para>UInt16类型，长度为2个字节</para>
/// </param>
/// <param name="pmtList">参数列表</param>
/// <returns></returns>
protected Byte[] GetDatagram(MessageId msgId, List <Parameter> pmtList)
{
// 获取消息体对象
MessageBody mb = new MessageBody(
msgId,
DevId,
pmtList);
// 获取消息体字节数组
Byte[] msgBody = mb.GetBody();
// 获取消息头对象
MessageHead mh = new MessageHead(
(UInt16)(msgBody.Length),
MessageType.ServerToDevice,
Counter.Instance.SeqNumber++,
Crc.GetCrc(msgBody));
// 返回消息报文字节数组
return(new Datagram(mh, mb).GetDatagram());
}
/// <summary>
/// 获取消息报文对象列表
/// </summary>
/// <param name="dataArray">消息报文字节数组</param>
/// <returns></returns>
public static List <Datagram> GetDatagramList(Byte[] dataArray)
{
if (dataArray.Length < 22)
{
throw new AirException("命令格式错误。", ResponseCode.CommandFormatError);
}
List <Byte[]> byteArrayList = new List <byte[]>();
List <Byte[]> newByteArrayList = new List <byte[]>();
GetByteArrayList(dataArray, 0, ref byteArrayList);
Descaping(byteArrayList, ref newByteArrayList);
MessageHead mh = new MessageHead();
MessageBody mb = new MessageBody();
Datagram d = new Datagram();
List <Datagram> datagramList = new List <Datagram>();
foreach (var byteArray in newByteArrayList)
{
if (!Enum.IsDefined(typeof(MessageType), byteArray[0]))
{
throw new AirException("不支持该类型的命令。", ResponseCode.NonsupportType);
}
mh.Type = (MessageType)byteArray[0];
mh.Length = (UInt16)((byteArray[1] << 8) + byteArray[2]);
mh.SeqNumber = (UInt32)((byteArray[3] << 24) + (byteArray[4] << 16) + (byteArray[5] << 8) + byteArray[6]);
mh.Reserved = (UInt32)((byteArray[7] << 16) + (byteArray[8] << 8) + byteArray[9]);
mh.Crc = (UInt16)((byteArray[10] << 8) + byteArray[11]);
if (!Enum.IsDefined(typeof(MessageId), (UInt16)((byteArray[12] << 8) + byteArray[13])))
{
throw new AirException("不支持该操作。", ResponseCode.NonsupportOperation);
}
mb.MsgId = (MessageId)((byteArray[12] << 8) + byteArray[13]);
mb.DevId = ((UInt64)byteArray[14] << 56) + ((UInt64)byteArray[15] << 48) + ((UInt64)byteArray[16] << 40) + ((UInt64)byteArray[17] << 32)
+ ((UInt64)byteArray[18] << 24) + ((UInt64)byteArray[19] << 16) + ((UInt64)byteArray[20] << 8) + byteArray[21];
List <Parameter> pmtList = new List <Parameter>();
GetParameterList(byteArray, 22, ref pmtList);
if (pmtList.Count > 0)
{
mb.PmtList = pmtList;
if (Crc.GetCrc(mb.GetBody()) != mh.Crc)
{
throw new AirException("消息体CRC校验错误。", ResponseCode.CrcCheckError);
}
}
else
{
throw new AirException("参数格式错误。", ResponseCode.ParameterFormatError);
}
d.Head = mh;
d.Body = mb;
datagramList.Add(d);
}
return(datagramList);
}