问工作7-8小时后，Com端口卡住或停止发送串行通信

EN

public static GO () 
{
    try
    {
        dmx = new Dmx(2, 0);

        Thread mTh1 = new Thread(() => dmx.Start(RGBdata1, RGBdata2, RGBdata3)); 

        Global.tmrStarted = true;  // test it,ok

        mTh1.Start();
    }
}

while (Global.tmrStarted)
{
    Break();
    Thread.Sleep(500); 
    if (m_port == null || m_port.IsOpen == false) return;
    m_port.Write(new byte[] { 0 }, 0, 1);
    SendData();


    Break1();
    if (m_port1 == null || m_port1.IsOpen == false) return;
    m_port1.Write(new byte[] { 0 }, 0, 1);
    SendData1();
    Break2();

    if (m_port4 == null || m_port4.IsOpen == false) return;
    m_port4.Write(new byte[] { 0 }, 0, 1);
    SendData2();

    Thread.Sleep(100);
}