/// <summary>
/// 入队一条指令
/// </summary>
/// <param name="allowDiscard">是否允许丢弃该指令</param>
/// <param name="cmdEventHandler">串口指令事件处理器</param>
/// <param name="sendCMDTimeout">发送指令超时时长（毫秒）</param>
/// <param name="reciveDataTimeout">接收数据超时时长（毫秒）</param>
/// <param name="cmd">指令</param>
public void Enqueue(Boolean allowDiscard, SerialPortCMDEventHandler cmdEventHandler, int sendCMDTimeout, int reciveDataTimeout, byte[] cmd)
{
SerialPortCMD serialPortCMD = new SerialPortCMD(sid, portName, allowDiscard, cmdEventHandler, sendCMDTimeout, reciveDataTimeout, cmd);
serialPortCMD.triggerEvent("Enqueue", null, null);
CMDQueue.Enqueue(serialPortCMD);
}
/// <summary>
/// 开始执行
/// </summary>
public void Start()
{
// 每100毫秒执行一次指令队列
CMDQueueExecuteTimer = new Timer((obj) =>
{
if (CurrentCMD == null)
{
CurrentCMD = Dequeue();
if (CurrentCMD != null)
{
CurrentCMD.Send(serialPort);
}
}
else
{
int status = CurrentCMD.GetStatus();
switch (status)
{
case -3:
{
CurrentCMD.triggerEvent("CMDQueueExecuteTimer", status, null);
}
break;
case -2:
{
CurrentCMD.triggerEvent("CMDQueueExecuteTimer", status, null);
}
break;
case -1:
{
CurrentCMD.triggerEvent("CMDQueueExecuteTimer", status, null);
CurrentCMD = null;
}
break;
case 0:
{
CurrentCMD.triggerEvent("CMDQueueExecuteTimer", status, null);
CurrentCMD = null;
}
break;
default:
CurrentCMD.triggerEvent("CMDQueueExecuteTimer -> Discard", status, null);
CurrentCMD = null;
break;
}
}
}, null, 0, 100);
}
/// <summary>
/// 销毁队列
/// </summary>
public void Dispose()
{
if (CMDQueueExecuteTimer != null)
{
try
{
CMDQueueExecuteTimer.Dispose();
}
catch (Exception ex)
{
System.Console.Write(ex);
CMDQueueExecuteTimer = null;
}
}
this.sid = null;
this.portName = null;
this.serialPort = null;
CMDQueue = null;
CurrentCMD = null;
}
/// <summary>
/// 出队一条指令
/// </summary>
/// <returns>
/// 指令对象
/// </returns>
private SerialPortCMD Dequeue()
{
if (CMDQueue.Count == 0)
{
return(null);
}
SerialPortCMD cmd = CMDQueue.Dequeue();
int status = cmd.GetStatus();
switch (status)
{
case 1:
{
cmd.triggerEvent("Dequeue", status, null);
return(Dequeue());
}
case 2:
{
cmd.triggerEvent("Dequeue", status, null);
cmd.ReCreate();
return(cmd);
}
case 3:
{
cmd.triggerEvent("Dequeue", status, null);
return(cmd);
}
default:
cmd.triggerEvent("Dequeue -> Discard", status, null);
return(null);
}
}