public byte[] McuSendRead(ushort addr, ushort len)
{
byte[] send_pack = ModbusUdp.MBReqConnect();
McuSend(send_pack, send_pack.Length);
//Timeout = 300；
//while （timeout--）
//{ //等待应答
// if（应答成功）
// {
// return get_data;
// }
// sleep(1);
//}
return(null);
}
private void ReceiveHandle()
{
//接收数据处理线程
string msg;
byte[] data = new byte[1024];
byte[] RecData;
while (true)
{
if (mySocket == null || mySocket.Available < 1)
{
Thread.Sleep(10);
continue;
}
//跨线程调用控件
//接收UDP数据报，引用参数RemotePoint获得源地址
int rlen = mySocket.ReceiveFrom(data, ref RemotePoint);
if (UdpReceiveFun != null)
{
UdpReceiveFun(data, rlen);
}
if ((data[0] == 0xff) && (data[1] == 0x00))
{
UdpConnectCompleteFlag.Value = true;
}
if (UdpConnectCompleteFlag.Value)
{
if ((data[0] == 0xff) && (data[1] == 0x01))
{
MonitorTickAck.Value = data[2];
msg = data[2].ToString();
Debug.WriteLine(RemotePoint.ToString() + " : " + msg);
}
RecData = new byte[rlen];
Array.Copy(data, 0, RecData, 0, rlen);
RecData = ModbusUdp.MBRsp(RecData);
if (RecData != null)
{
Debug.WriteLine(ModbusUdp.ByteToHexStr(RecData));
}
}
}
}
//MCU数据发送函数
public void McuSendConnect()
{
byte[] send_pack = ModbusUdp.MBReqConnect();
McuSend(send_pack, send_pack.Length);
}
private void UdpServerTask()
{
byte MonitorTick = 0;
IPAddress ip;
int port;
//得到本机IP，设置UDP端口号
IPAddress.TryParse(GetLocalIP(), out ip);
port = 0; //自动分配端口
ipLocalPoint = new IPEndPoint(ip, port);
//定义网络类型，数据连接类型和网络协议UDP
mySocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
//绑定网络地址
try
{
mySocket.Bind(ipLocalPoint);
}
catch
{
MessageBox.Show("网络端口被占用");
//System.Environment.Exit(0);
}
//设置广播地址
ip = IPAddress.Broadcast;
port = 1030;
IPEndPoint ipep = new IPEndPoint(ip, port);
EndPoint BroadcastRemotePoint = (EndPoint)(ipep);
//设置客户机IP，默认为广播地址
RemotePoint = (EndPoint)(ipep);
//允许广播
mySocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, 1);
//启动一个新的线程，执行方法this.ReceiveHandle，
//以便在一个独立的进程中执行数据接收的操作
Thread thread = new Thread(new ThreadStart(this.ReceiveHandle));
thread.IsBackground = true; //设置为后台线程
thread.Start();
//发送UDP数据包
byte[] data;
while (true)
{
if (!UdpConnectCompleteFlag.Value)
{
data = ModbusUdp.MBReqConnect();
mySocket.SendTo(data, data.Length, SocketFlags.None, BroadcastRemotePoint);
Debug.WriteLine("Search udp server...");
}
else
{
if (MonitorTickAck.Value != MonitorTick)
{
if (MonitorTickTimeout.Value > 0)
{
MonitorTickTimeout.Value--;
}
}
else
{
MonitorTickTimeout.Value = MonitorTickTimeoutValue;
}
if (MonitorTickTimeout.Value == 0)
{
UdpConnectCompleteFlag.Value = false;
MonitorTick = 0;
MonitorTickAck.Value = 0;
MonitorTickTimeout.Value = MonitorTickTimeoutValue;
Debug.WriteLine("Connect lose...");
continue;
}
else
{
//发送UDP心跳包
if (MonitorTick < 0xff)
{
MonitorTick++;
}
else
{
MonitorTick = 0;
}
data = ModbusUdp.MBReqMonitor(MonitorTick);
mySocket.SendTo(data, data.Length, SocketFlags.None, RemotePoint);
Debug.WriteLine("Connect monitor...");
}
}
Thread.Sleep(1000);
}
}