Silverlight talking to Arduino

This is an initial rough post, but I have managed to get Silverlight 4 beta talking to an ActiveXperts COM+ interface that talks to an Arduino over a serial connection.

Here is my first attempt to do a video of it. Looks like I’m going to need to learn how to make a screencast.

 

 

 

The C# code.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Windows.Interop;
using System.Text;
using System.Threading;

namespace TestSerial
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            if (App.Current.InstallState == InstallState.NotInstalled)
            {
                App.Current.Install();
            }
        }
        dynamic com;
        private void button2_Click(object sender, RoutedEventArgs e)
        {

           com=ComAutomationFactory.CreateObject("ActiveXperts.ComPort");
            dynamic count = com.GetDeviceCount();
            StringBuilder sb = new StringBuilder();
            
            List<dynamic> devices = new List<dynamic>();
            for(int i=1;i<=9;i++)
            {
                devices.Add("COM" + i);
            }

            for (int i = 0; i < count; i++)
            {
                    devices.Add(com.GetDevice(i));
                
            }
            devicelst.ItemsSource = devices;
            
        }

        private void button3_Click(object sender, RoutedEventArgs e)
        {
            //string device = devicelst.SelectedItem.ToString();
            if (devicelst.SelectedItem == null) { MessageBox.Show("Please pick a port"); return; }
            com.Device = devicelst.SelectedItem.ToString();
            com.Open();
            MessageBox.Show(com.GetErrorDescription(com.LastError));
            string buffer = "";
            System.Threading.Thread t = new Thread(new ThreadStart(delegate()
            {

                while (1 == 1)
                {
                    com.Sleep(200);
                    buffer = com.ReadString();
                    if (buffer == "") { com.Close(); return; }
                    tb.Dispatcher.BeginInvoke(delegate()
                    {
                        tb.Text += "\r\n" + com.ReadString();
                    });
                }
            }));
            t.Start();
        }


    }
}

The Xaml.

<UserControl x:Class="TestSerial.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
    d:DesignHeight="300" d:DesignWidth="400">

    <Grid x:Name="LayoutRoot" Background="White">
        <Grid.ColumnDefinitions>
            <ColumnDefinition></ColumnDefinition>
            <ColumnDefinition></ColumnDefinition>
            <ColumnDefinition></ColumnDefinition>
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"></RowDefinition>
            <RowDefinition Height="Auto"></RowDefinition>
            <RowDefinition></RowDefinition>
        </Grid.RowDefinitions>
        <Button Content="Install" Height="23" HorizontalAlignment="Left" Name="button1" VerticalAlignment="Top" Width="75" Click="button1_Click" Grid.Row="0"/>
        <Button Content="Get Devices" Height="23" HorizontalAlignment="Left"  Name="button2" VerticalAlignment="Top" Width="75" Grid.Row="1" Click="button2_Click"/>
        <ComboBox Name="devicelst" Grid.Row="1" Margin="1,0,0,0" Grid.Column="1"></ComboBox>
        <Button Content="Connect" Grid.Column="3" Grid.Row="1" Height="23" HorizontalAlignment="Left" Name="button3" VerticalAlignment="Top" Click="button3_Click"/>
        <TextBox Name="tb" Grid.ColumnSpan="3" Grid.Row="2" VerticalScrollBarVisibility="Visible"></TextBox>
    </Grid>
</UserControl>

/*
  ASCII table
Prints out byte values in all possible formats: 
* as raw binary values
* as ASCII-encoded decimal, hex, octal, and binary values
For more on ASCII, see http://www.asciitable.com and http://en.wikipedia.org/wiki/ASCII
The circuit:  No external hardware needed.
created 2006
by Nicholas Zambetti
modified 18 Jan 2009
by Tom Igoe
<http://www.zambetti.com>
*/
void setup()
{
  Serial.begin(9600);

  // prints title with ending line break
  Serial.println("ASCII Table ~ Character Map");
}

// first visible ASCIIcharacter '!' is number 33:
int thisByte = 33;
// you can also write ASCII characters in single quotes.
// for example. '!' is the same as 33, so you could also use this:
//int thisByte = '!'; 

void loop()
{
  // prints value unaltered, i.e. the raw binary version of the
  // byte. The serial monitor interprets all bytes as
  // ASCII, so 33, the first number,  will show up as '!'
  Serial.print(thisByte, BYTE);   

  Serial.print(", dec: ");
  // prints value as string as an ASCII-encoded decimal (base 10).
  // Decimal is the  default format for Serial.print() and Serial.println(),
  // so no modifier is needed:
  Serial.print(thisByte);     
  // But you can declare the modifier for decimal if you want to.
  //this also works if you uncomment it:

  // Serial.print(thisByte, DEC); 

  Serial.print(", hex: ");
  // prints value as string in hexadecimal (base 16):
  Serial.print(thisByte, HEX);    

  Serial.print(", oct: ");
  // prints value as string in octal (base 8);
  Serial.print(thisByte, OCT);    

  Serial.print(", bin: ");
  // prints value as string in binary (base 2)
  // also prints ending line break:
  Serial.println(thisByte, BIN);  

  // if printed last visible character '~' or 126, stop:
  if(thisByte == 126) {     // you could also use if (thisByte == '~') {
    // This loop loops forever and does nothing
    while(true) {
      continue;
    }
  }
  // go on to the next character
  thisByte++; 
}