/// <summary>
/// 发送命令
/// </summary>
/// <param name="cmd">命令类型</param>
/// <param name="Packet">返回包</param>
/// <param name="sendData">要发送的数据</param>
/// <returns></returns>
private bool PutCommData(SERCOM_TYPE cmd, Byte[] sendData,Byte[] Packet)
{
try
{
//Byte[] mstartcode =new Byte[sizeof(UInt16)];
//uIntToByteArray(FRAMESTARTCODE, ref mstartcode);
//Int32 index = 0;
//mstartcode.CopyTo(Packet, index);
Byte sum = 0;
Packet[(Int32)Index.startcode] =(Byte)FRAMESTARTCODE;
sum += Packet[(Int32)Index.startcode];
//Packet[(Int32)Index.protocol_type] = (Byte)FRAMEPRO_TYPE;
//sum += Packet[(Int32)Index.protocol_type];
//Packet[(Int32)Index.command_direction] = (Byte)FRAMECOMM_DIR;
//sum += Packet[(Int32)Index.command_direction];
Packet[(Int32)Index.cmdone] = (Byte)cmd;
sum += Packet[(Int32)Index.cmdone];
Packet[(Int32)Index.cmdtwo] = (Byte)SERCOM_TYPE.COM_NULL;
sum += Packet[(Int32)Index.cmdtwo];
if (sendData != null)
{
Packet[(Int32)Index.length] = (Byte)sendData.Length;
sum += (Byte)sendData.Length;
}
else
Packet[(Int32)Index.length] = 0;
if (sendData!=null)
{
//sendData.CopyTo(Packet, (Int32)Index.buffer);
for (int i = 0; i < sendData.Length; i++)
{
Packet[((Int32)Index.buffer)+i]=sendData[i];
sum += (Byte)sendData[i];
}
}
if (sendData != null) { Packet[CONTAINER_LENGTH-1 + sendData.Length] = sum; }
else { Packet[CONTAINER_LENGTH-1] = sum; }
if (sum==0)
{
HDIC_Message.ShowWarnDialog(null, "没有内容，无法组建发送包");
return false;
}
}
catch (System.Exception ex)
{
HDIC_Message.ShowWarnDialog(null, "组建发送包的时候出现错误："+ex.ToString());
return false;
}
return true;
}
/// <summary>
/// 命令总入口
/// </summary>
/// <param name="cmd">发送命令的类型</param>
/// <param name="dataLength">发送命令行中数据长度</param>
/// <param name="dataAck">发送的数据</param>
/// <param name="dataReq">返回的数据</param>
/// <returns></returns>
public Int32 Command(SERCOM_TYPE Reqcmd,Byte[] dataReq,Int32 MReceiveLength,ref Byte[] cmdlineAck)
{
mReadBuffer.Clear();
Int32 errCode = 0;
Int32 ReqCount = 0;
ReceiveLength = MReceiveLength;
if (ReceiveBytes != null)
{
Array.Clear(ReceiveBytes, 0, ReceiveBytes.Length);
}
mSpSlot.DataReceived += new System.IO.Ports.SerialDataReceivedEventHandler(dataReceived);
//////////////////////////////////////////////////////////////////////接收握手信号
if (Reqcmd == SERCOM_TYPE.COM_NULL)
{
if (!mSemaphore.WaitOne(60000))//设置接收握手信号 等待时间是1分钟
{
return -120; // timeout
}
//string a = "";
}
if (Reqcmd != SERCOM_TYPE.COM_NULL)
{
// flush serial port
////mSpSlot.DiscardInBuffer();
//mReadBuffer.Initialize();
//////////////////////////////////////////////////////////////////////////发送
ReqCount = CONTAINER_LENGTH;
if (dataReq != null)
{
ReqCount += dataReq.Length;
}
Byte[] packet = new Byte[ReqCount];
bool ReqData = PutCommData(Reqcmd, dataReq, packet);//组建发送命令包
if (!ReqData)
{
return -100;
}
try
{
mSpSlot.Write(packet, 0, packet.Length); //发送命令
}
catch (Exception ex)
{
return -110;
}
//////////////////////////////////////////////////////////////////////////接收
if (!mSemaphore.WaitOne(2000))//超时
{
return -120; // timeout
}
}
cmdlineAck = ReceiveBytes;
return errCode;
}