/// <summary>
/// 创建一个下行数据包
/// </summary>
/// <param name="protocolPackageId">协议包Id</param>
/// <param name="body">消息体</param>
/// <param name="serialNumber"></param>
/// <returns></returns>
public static byte[] CreateBytesPackage(string protocolPackageId, Int16 serialNumber,
Action<BytesWriter> body = null)
{
List<byte> list = new List<byte>();
using (BytesWriter bw = new BytesWriter())
{
if (body != null)
{
body(bw);
}
//消息头 长度 Id(协议号)
list.Add((byte) (bw.Data.Length + 5));
list.AddRange(ByteHelper.ConvertHexStringToBytes(protocolPackageId));
//消息体
list.AddRange(bw.Data);
//序号
list.AddRange(ByteHelper.ConvertInt16ToBytes(serialNumber));
//效验码
list.AddRange(GetCheckCode(list.ToArray()));
//效验数据
var data = list.ToArray();
//重新组建数据包
//清空集合
list.Clear();
//标识位开始
list.AddRange(new byte[] {0x78, 0x78});
//校验后数据
list.AddRange(data);
//标志位结束
list.AddRange(new byte[] {0x0d, 0x0a});
return list.ToArray();
}
}
/// <summary>
/// 创建一个下行数据包
/// </summary>
/// <param name="protocolPackageId">协议包Id</param>
/// <param name="body">消息体</param>
/// <returns></returns>
public static byte[] CreateBytesPackage(string protocolPackageId, string deviceGpsCodeNoPrefix,Int16 serialNumber, Action<BytesWriter> body = null, bool isMulti = false)
{
List<byte> list = new List<byte>();
using (BytesWriter bw = new BytesWriter())
{
if (body != null)
{
body(bw);
}
Int16 attr = 0;
if (isMulti)
{
attr = (Int16)(bw.Data.Length - 4);
attr = (Int16)(attr | (1 << 13));
}
else
{
attr = (Int16)bw.Data.Length;
}
//消息头 Id 属性 终端编码 流水号
list.AddRange(ByteHelper.ConvertHexStringToBytes(protocolPackageId));
list.AddRange(ByteHelper.ConvertInt16ToBytes(attr));
list.AddRange(ByteHelper.ConvertNumStringToBytesByBcd(deviceGpsCodeNoPrefix));
list.AddRange(ByteHelper.ConvertInt16ToBytes(serialNumber));
//消息体
list.AddRange(bw.Data);
//效验码
list.Add(GetCheckCode(list.ToArray()));
//转义数据
var data = Escape(list.ToArray());
//重新组建数据包
//清空集合
list.Clear();
//标识位开始
list.Add(0x7e);
//转义后数据
list.AddRange(data);
//标志位结束
list.Add(0x7e);
return list.ToArray();
}
}