public void Scan()
{
InvokeStateChanged(1, "配置参数...");
lock (lockobj)
{
if (scanPortTh == null)
{
scanPortTh = new Thread(() =>
{
while (!stopScan)
{
lock (managers)
{
foreach (SerialPortManager m in managers)
{
if (m.Connected)
{
continue;
}
m.InvokeStateChanged(2, "扫描设备...");
string[] portNames = SerialPort.GetPortNames();
foreach (string portName in portNames) //遍历已经扫描到的串口
{
//跳过已经使用的串口
if (string.IsNullOrEmpty(portName) || usedPorts.Contains(portName))
{
continue;
}
m.SetSerialPort(ref m._portNum, ref m._baudRate, ref m._parity, ref m._dataBits, ref m._stopBits);
m.userCustomName = m._portNum != -1;
//自定义了串口号
if (m.userCustomName)
{
if (portName != m.PortName)
{
continue;
}
}
SerialPort port = new SerialPort(portName, m._baudRate, m._parity, m._dataBits, m._stopBits);
if (port.DiscardNull)
{
port.DiscardNull = false;
}
bool portOpen = false;
try
{
port.Open(); //打开端口
portOpen = port.IsOpen;
if (portOpen)
{
if (m.VerifySerialPort(port))
{
port.DataReceived += m.Port_DataReceived;
port.ErrorReceived += m.Port_ErrorReceived;
port.PinChanged += m.Port_PinChanged;
m.currentPort = port;
if (!m.userCustomName)
{
m._portName = portName;
}
m.Connected = true;
if (!usedPorts.Contains(portName))
{
usedPorts.Add(portName);
}
if (managers.All(s => s.Connected))
{
stopScan = true;
}
m.InvokeStateChanged(3, "捕获设备...");
break;
}
else
{
port.Close();
}
}
}
catch (Exception ex)
{
if (!portOpen)
{
m.InvokeStateChanged(4, "串口被占用！");
}
System.Diagnostics.Debug.WriteLine(ex);
continue;
}
}
}
}
Thread.Sleep(1000);
}
scanPortTh = null;
});
scanPortTh.Name = "scanPortTh";
scanPortTh.IsBackground = true;
}
if (managers.Any(s => !s.Connected))
{
stopScan = false;
if (!scanPortTh.IsAlive)
{
scanPortTh.Start();
}
}
if (checkTask == null)
{
checkTask = new Task(() =>
{
while (true)
{
try
{
foreach (SerialPortManager serialPort in managers)
{
if (serialPort.Connected == false)
{
continue;
}
if (serialPort.Released)
{
continue;
}
if ((DateTimeHelper.Now - serialPort.lastRecTime).TotalSeconds > 30)
{
serialPort.InvokeStateChanged(-1, "设备断开");
serialPort.Close();
}
}
}
catch (Exception e)
{
LogHelper.WriteError(e, "检查任务失败");
}
Thread.Sleep(1000);
}
}, TaskCreationOptions.LongRunning);
checkTask.Start();
}
if (dealRecDataTh == null)
{
dealRecDataTh = new Thread(() =>
{
while (true)
{
try
{
recQueue.EnqueueEvent.WaitOne(1000);
if (recQueue.Count == 0)
{
continue;
}
if (LineReceived != null)
{
while (true)
{
int rl = recQueue.Find((byte)'\n'); //查找行尾
if (rl == -1)
{
rl = recQueue.Find((byte)'$'); //特殊情况
if (rl <= 0)
{
break;
}
}
else
{
rl++; //包含\n
}
byte[] tmp = new byte[rl];
int c = recQueue.DequeueRange(tmp, 0, rl);
OnLineReceived(Encoding.GetString(tmp, 0, c), tmp);
}
}
else
{
recQueue.Clear();
}
}
catch (Exception ex)
{
LogHelper.WriteError(ex, "处理接收到的串口数据失败");
}
}
});
dealRecDataTh.IsBackground = true;
dealRecDataTh.Name = nameof(dealRecDataTh);
dealRecDataTh.Start();
}
}
}