未知设备的串行端口连接

Question

我有投币机接受器组，我想使用串行端口连接这台机器。我的主要问题是，我确实尝试了几乎所有设置来连接该机器。电缆上的引脚号写为第 3 和第 7。所以我尝试了一下，

    private void Form1_Load(object sender, EventArgs e)
    {   
        // SerialPort paraPort defined at designer's generated code        
        paraport = new SerialPort("COM1", 9600, Parity.None, 8, StopBits.One);


        //I wanna access to windows controls from the thread
        System.Windows.Forms.Form.CheckForIllegalCrossThreadCalls = false;
    }


    private void button2_Click(object sender, EventArgs e)
    {
        //paraPort is the name of serialport class
        paraPort.ReadBufferSize = 1024;
        paraPort.WriteBufferSize = 1024;
        paraPort.ReadTimeout = 1000;
        paraPort.WriteTimeout = 1000;
        paraPort.NewLine = "\n";

        //Because 7th pin is for RTS which means request 2 send
        paraPort.Handshake = Handshake.RequestToSend;


        //Data Terminal Ready Enable
        paraPort.DtrEnable = true;
        paraPort.RtsEnable = true;
        paraPort.Open();

        //Then Thread check the procedure inside of try - catch block

     try{
        // Thread money defined at designer's generated code
        money = new Thread(new ThreadStart(CheckTheMachineState));
        money.Start();
     }catch(Exception e){
        MessageBox.Show("thread cannot be created"+e.Message);
     }

     }


        private void CheckTheMachineState()
        {
            richTextBox1.AppendText("Thread is running\n");


            //I wanna get the value of IOCTL_SERIAL_WAIT_ON_MASK
            //But I still don't know how

        }
    }

机器运转良好。但是当我使用 paraPort.ReadBufferSize 属性时，当硬币接受 :S 时它给我 0。当我使用 paraPort.Read 方法时，它会抛出超时异常：\

那么我能为这个东西做什么呢？我正在使用 portmon 工具来捕获投币机信号。

当我投入硬币时，IOCTL_SERIAL_WAIT_ON_MASK 值更改为 SUCESS。我怎样才能捕捉到这个值？

Answer 1

经过几天的工作，我已经弄清楚如何使用VB6通过串行端口将硬币接收器/验证器机器连接到PC，这样每个插入插槽的硬币都会触发一个信号，该信号将被PC捕获。