热敏打印机-通过FTDI基本板和C的笔记本电脑#

我正试图使用C#(在Mac 10.8下运行Mono 3.2)通过FTDI Basic板在我的笔记本电脑和热敏打印机(从Sparkfun购买)之间建立链接。我一直在使用来自以下位置的.net库:

http://electronicfields.wordpress.com/2011/09/29/thermal-printer-dot-net/

https://github.com/yukimizake/ThermalDotNet

代码似乎没有任何错误(我已经更改了串行端口和波特率以匹配我的设置),并且它似乎在终端上运行了整个程序。但是,它无法与打印机交互,因此无法打印任何内容。

这正是我正在使用的代码:

using System;
using System.IO;
using System.Text; 
using System.Threading;
using System.IO.Ports;
//using System.Collections.Generic;
//using System.Drawing;
using ThermalDotNet;
using Microsoft.SPOT;

namespace ThermalPrinterTestApp
{
class PrinterClass
{
    SerialPort printerPort;
    ThermalPrinter printer;

    public PrinterClass(string printerPortName = "/dev/tty.usbserial-AD025HP0")
    {
        //Serial port init
        printerPort = new SerialPort(printerPortName, 19200);

        if (printerPort != null)
        {
            Debug.Print("Port ok");
            if (printerPort.IsOpen)
            {
                printerPort.Close();
            }
        }

        Debug.Print("Opening port");

        try
        {
            printerPort.Open();
        }
        catch
        {
            Debug.Print("I/O error");
            //Environment.Exit(0);
        }

        //Printer init
        printer = new ThermalPrinter(printerPort, 9, 110, 10);
        printer.Reset();
    }

    public void TestBarcode()
    {
        printer.WakeUp(); 
        ThermalPrinter.BarcodeType myType = ThermalPrinter.BarcodeType.ean13;
        string myData = "3350030103392";
        printer.SetBarcodeLeftSpace(25);
        printer.WriteLine(myType.ToString() + ", data: " + myData);
        printer.SetLargeBarcode(true);
        printer.LineFeed();
        printer.PrintBarcode(myType,myData);
        printer.LineFeed(2);
    }

    /*
    static void TestImage(ThermalPrinter printer)
    {
        printer.WriteLine("Test image:");
        Bitmap img = new Bitmap("../../../mono-logo.png");
        printer.LineFeed();
        printer.PrintImage(img);
        printer.LineFeed();
        printer.WriteLine("Image OK");
    }*/

    public void PrintTest()
    {
        printer.WakeUp();
        Debug.Print(printer.ToString());

        //System.Threading.Thread.Sleep(5000);
        printer.SetBarcodeLeftSpace(25);
        TestBarcode();
        printer.LineFeed(3);

        //System.Threading.Thread.Sleep(5000);
        //TestImage();

        //System.Threading.Thread.Sleep(5000);

        printer.WriteLineSleepTimeMs = 200;
        printer.WriteLine("Default style");
        printer.WriteLine("PrintingStyle.Bold",ThermalPrinter.PrintingStyle.Bold);
        printer.WriteLine("PrintingStyle.DeleteLine",ThermalPrinter.PrintingStyle.DeleteLine);
        printer.WriteLine("PrintingStyle.DoubleHeight",ThermalPrinter.PrintingStyle.DoubleHeight);
        printer.WriteLine("PrintingStyle.DoubleWidth",ThermalPrinter.PrintingStyle.DoubleWidth);
        printer.WriteLine("PrintingStyle.Reverse",ThermalPrinter.PrintingStyle.Reverse);
        printer.WriteLine("PrintingStyle.Underline",ThermalPrinter.PrintingStyle.Underline);
        printer.WriteLine("PrintingStyle.Updown",ThermalPrinter.PrintingStyle.Updown);
        printer.WriteLine("PrintingStyle.ThickUnderline",ThermalPrinter.PrintingStyle.ThickUnderline);
        printer.SetAlignCenter();
        printer.WriteLine("BIG TEXT!",((byte)ThermalPrinter.PrintingStyle.Bold +
            (byte)ThermalPrinter.PrintingStyle.DoubleHeight +
            (byte)ThermalPrinter.PrintingStyle.DoubleWidth));
        printer.SetAlignLeft();
        printer.WriteLine("Default style again");           
        printer.LineFeed(3);

        printer.Sleep();
    }
}
}

这是我运行程序后得到的终端日志:

Port ok
Opening port
ThermalPrinter:
    _serialPort=/dev/tty.usbserial-AD025HP0,
    _maxPrintingDots=2,
    _heatingTime=180,
    _heatingInterval=2,
    PictureLineSleepTimeMs=40,
    WriteLineSleepTimeMs=0,
    Encoding=ibm850
Printer is now offline.

Press any key to continue...

你知道问题出在哪里吗?

需要注意的几点:

1. 打印机已经能够打印出一个样本,所以它似乎可以工作。
2. 当我播放该程序时,我注意到在FTI上,只有TX(发送?)亮起,而RX(接收?)不亮。我检查了接线,一切似乎都很正常,所以不确定是否有什么问题(我附上了图像)[编辑:没有足够的图像代表点!]
3. 我也尝试过使用Arduino作为比较,但也出现了类似的错误(调试很好,但没有交互)
4. 我是一个初学者,所以很抱歉过于简单化或过于疏忽!

谢谢 陈缘