.Net Micro Framework研究—模拟器改造

       

试验平台:.Net Micro Framework 模拟器

由于Digi提供的开发板没有LCD显示屏,所以有关绘图方面的操作,只好在模拟器上进行了。

如果大家参加了918在北京召开的.Net Micro Framework2007技术大会,并且耐心等到最后,大会的礼品U盘里就有.Net Micro Framework的开发包。

不过微软这方面对.Net Micro Framework更新很快,如果你到网站上下载,最新的.Net Micro Framework SDK2.0 SP1已经发布了。

下载链接:http://www.microsoft.com/downloads/details.aspx?familyid=32f5df20-6c95-4fe8-a76c-0ed56a839ad2&displaylang=en

 

如果你用的是大会优盘的开发包,你会发现,微软真是萝卜快了不洗泥,模拟器不仅粗糙,而且按钮并没有完全拉开,下半截的按钮的圆弧不见了(可参见我以前写的文章:http://blog.csdn.net/yefanqiu/archive/2007/09/18/1790404.aspx)。如果你下载最新的开放包,这个问题已经解决了(看来微软的战略就是快速抢占市场,问题以后在一一修补)。

无论怎样模拟器还是非常难看,估计n个版本之后,才能推出很漂亮的模拟器。正好微软SDK开发包中,有模拟器外壳的开发程序,所以练练手,给.Net Micro Framework武装一个“*模拟器”。

下面就是我开发的模拟器(应该称外壳)和微软自带的模拟器比较图,我们先睹为快,接下来我就说说是如何做的。 .Net Micro Framework研究—模拟器改造

(图:MF071030001.jpg 

       .Net Micro Framework SDK中的示例程序里就有一个模拟器外壳开发程序,也就是“SampleEmulator”示例程序,它是一个典型的C#程序(只不过引用了与.Net Micro Framework相关的几个库),你编译成功后,直接运行,它会弹出下面的提示框。

           .Net Micro Framework研究—模拟器改造

    (图:MF071030004.jpg

    其实它是需要输入如下命令行参数的:

    "/load:%ProgramFiles%/Microsoft .NET Micro Framework/v2.0.3036/Assemblies/Microsoft.SPOT.TinyCore.pe" "/load:%ProgramFiles%/Microsoft .NET Micro Framework/v2.0.3036/Assemblies/Microsoft.SPOT.Hardware.pe" "/load:../../../../TemperatureSample/TemperatureSample/bin/Debug/TemperatureSample.pe" "/load:%ProgramFiles%/Microsoft .NET Micro Framework/v2.0.3036/Assemblies/Microsoft.SPOT.Graphics.pe" "/load:%ProgramFiles%/Microsoft .NET Micro Framework/v2.0.3036/Assemblies/mscorlib.pe" "/load:%ProgramFiles%/Microsoft .NET Micro Framework/v2.0.3036/Assemblies/Microsoft.SPOT.Native.pe"

      

     我们先不管这些,我们希望以后.Net Micro Framework程序运行的时候,加载的是我们的模拟器,所以我们要找出系统模拟器的位置,功夫不负有心人,竟然在这个位置:

     C:/Program Files/Microsoft .NET Micro Framework/v2.0.3036/Tools

     文件名:Microsoft.SPOT.Emulator.Sample.SampleEmulator.exe

     把我们编译好的模拟器程序(最好先和系统自带的有所不同)覆盖掉该程序,运行其它程序试试,果然加载的是我们新生成的模拟器。

     好了,看看我是如何做的。

     其实,微软提供的模拟器外壳程序比较复杂(具体代码请下载开发包后自行查看),所以我不仅要换肤,还要对代码重新进行整理。成绩还是斐然的,如button控件,资源图片等等统统去掉了,仅添加了一个imagelist控件,就在窗体函数里实现了该功能。

       详细代码如下,有兴趣的朋友自己看。

using System;

using System.Drawing;

using System.Threading;

using System.Windows.Forms;

 

using Microsoft.SPOT.Emulator;

using Microsoft.SPOT.Hardware;

using System.Drawing.Drawing2D;

 

namespace Microsoft.SPOT.Emulator.Sample

{

    /// <summary>

    /// This is the UI for the LCD sample

    /// </summary>

    public partial class SampleEmulatorForm : Form

    {

        Emulator _emulator;

        //叶帆添加

        Gpio.GpioPort[] _port=new Microsoft.SPOT.Emulator.Gpio.GpioPort[5];

        delegate void PortWriteDelegate(bool fState);

        int intIndex = 0;

        bool[] _pressed = new bool[] {false,false,false,false,false };

 

        public SampleEmulatorForm(Emulator emulator)

        {

            _emulator = emulator;

            // Initializing the component on the UI form

            InitializeComponent();

        }

        protected override void OnLoad(EventArgs e)

        {

            //Give the buttonCollection focus to allow it to handle keyboard events

            //this.buttonCollection.Select();           

            base.OnLoad(e);

        }

        public void OnInitializeComponent()

        {

            //initialize the lcd control with the lcd emulator component

            this.lcdDisplay.LcdDisplay = _emulator.LcdDisplay;

 

            //叶帆添加

            _port[0] = _emulator.FindComponentById("Pin_Select") as Gpio.GpioPort;

            _port[1] = _emulator.FindComponentById("Pin_Up") as Gpio.GpioPort;

            _port[2] = _emulator.FindComponentById("Pin_Left") as Gpio.GpioPort;

            _port[3] = _emulator.FindComponentById("Pin_Down") as Gpio.GpioPort;

            _port[4] = _emulator.FindComponentById("Pin_Right") as Gpio.GpioPort;

        }

        //按下叶帆添加

        private void picKey_MouseDown(object sender, MouseEventArgs e)

        {

            //OK

            Rectangle rect = new Rectangle(31, 40, 70, 50);

            intIndex = 0;      

            if (rect.Contains(e.X, e.Y))

            {

                intIndex = 0;

            }

            //UP        

            GraphicsPath path = new GraphicsPath();

            path.AddPolygon(new Point[] {new Point(0,0),new Point(129,0),new Point(100,40),new Point(30,40) });

            if (path.IsVisible(e.X, e.Y))

            {

                intIndex = 1;

            }

            //LEFT

            path.Reset();

            path.AddPolygon(new Point[] { new Point(0, 0), new Point(0, 130), new Point(31, 90), new Point(31, 40) });

            if (path.IsVisible(e.X, e.Y))

            {

                intIndex = 2;

            }

            //DOWN

            path.Reset();

            path.AddPolygon(new Point[] { new Point(0, 130), new Point(129, 130), new Point(100, 90), new Point(30, 90) });

            if (path.IsVisible(e.X, e.Y))

            {

                intIndex = 3;

            }

            //RIGHT

            path.Reset();

            path.AddPolygon(new Point[] { new Point(129, 0), new Point(129, 130), new Point(100, 90), new Point(100, 40) });

            if (path.IsVisible(e.X, e.Y))

            {

                intIndex = 4;

            }

            picKey.BackgroundImage = imgKey.Images[intIndex+1];

            OnButtonStateChanged(intIndex, true);

        }

        //弹起叶帆添加

        private void picKey_MouseUp(object sender, MouseEventArgs e)

        {

            picKey.BackgroundImage = imgKey.Images[0];

            OnButtonStateChanged(intIndex, false);

        }

        //按下(无法捕捉方向键)

        private void SampleEmulatorForm_KeyDown(object sender, KeyEventArgs e)

        {

        }

        //抬起

        private void SampleEmulatorForm_KeyUp(object sender, KeyEventArgs e)

        {

            picKey.BackgroundImage = imgKey.Images[0];

            OnButtonStateChanged(intIndex, false);

        }

        //捕捉方向键

        protected override bool ProcessDialogKey(Keys keyData)

        {

            switch (keyData)

            {

                case Keys.Enter:

                    intIndex = 0;

                    break;

                case Keys.Up:

                    intIndex = 1;

                    break;

                case Keys.Left:

                    intIndex = 2;

                    break;

                case Keys.Down:

                    intIndex = 3;

                    break;

                case Keys.Right:

                    intIndex = 4;

                    break;

            }

            picKey.BackgroundImage = imgKey.Images[intIndex + 1];

            OnButtonStateChanged(intIndex, true);

            return base.ProcessDialogKey(keyData);

        }

 

        //按键状态改变

        private void OnButtonStateChanged(int index,bool pressed)

        {

            if (_port[index] != null)

            {

                if (_pressed[index] != pressed)

                {

                    _pressed[index] = pressed;

                    bool val = false;

                    switch (_port[index].Resistor)

                    {

                        case Microsoft.SPOT.Emulator.Gpio.GpioResistorMode.Disabled:

                        case Microsoft.SPOT.Emulator.Gpio.GpioResistorMode.PullUp:

                            val = pressed;

                            break;

                        case Microsoft.SPOT.Emulator.Gpio.GpioResistorMode.PullDown:

                            val = !pressed;

                            break;

                    }

                    //Marshal to MicroFramework thread. 

                    //No need to wait for a response.  Just post the message

                    _port[index].BeginInvoke(new PortWriteDelegate(_port[index].Write), !val);

                }

            }

        }      

    }

}

 

在下面的网站上,我们还可以下载最新的.Net Micro Framework示例程序,其中“NewPresentation”程序比“Presentation”已高了一个层次,如下图:  .Net Micro Framework研究—模拟器改造

    (图:MF071030002.jpg 

此外这个温度显示的示例程序也不错,我们可以用上下按钮修改温度值,如下图。

             .Net Micro Framework研究—模拟器改造

(图:MF071030003.jpg

 

新示例下载链接:  http://msdn2.microsoft.com/en-us/embedded/bb267253.aspx

   

不过总体来说,示例程序还是很简陋的,有时间我自己做一个最炫的(当然网友有做得更好的,别忘了与我分享)。

 

附录:经典.Net Micro Framework应用欣赏 .Net Micro Framework研究—模拟器改造

     (图:MF071030005.jpg

我做的模拟器外壳,就是从上图“偷”来的J,不过按钮单击效果倒是费了我不少周折。

想想看,用.Net Micro Framework开发MP3/MP4,电子词典该是多么容易和简单,并且效果一定很炫。(上网查了查 Digi核心小模块要$199,几千两银子呢,介入的厂商越多,相信硬件平台一定会越来越便宜的)。

 

下面是我开发的模拟器下载地址,有兴趣的朋友可以试一试

http://download.csdn.net/source/274337

 

 

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