first version of debug messages display in Serial Monitor console

OneWireIO.ino

@@ -14,8 +14,8 @@ byte backBufferPos = 0;
 byte samplesSkipped = SkipSamples;
 unsigned long backBufferStartTime = micros();
 
-SerialChannel oscilloscope;
-SerialChannel debug;
+SerialChannel oscilloscope("oscilloscope");
+SerialChannel debug("debug");
 
 void setup()
 {
@@ -45,8 +45,6 @@ void setup()
     sei();//enable interrupts
     
     Serial.begin(9600);
-    oscilloscope.init("oscilloscope");
-    debug.init("debug");
 }
 
 void loop()
@@ -60,15 +58,10 @@ void loop()
     backBufferStartTime = micros();
     sei();//enable interrupts
     
-    unsigned long now = micros();
-    debug.write((byte*)&now, 4);
     debug.write("Starting buffer transmission");
     
-    oscilloscope.write((byte*)&currentBufferStartTime, 4);
-    oscilloscope.write(currentBuffer, currentBufferSize);
+    oscilloscope.write(currentBuffer, currentBufferSize, currentBufferStartTime);
     
-    now = micros();
-    debug.write((byte*)&now, 4);
     debug.write("Buffer transmitted");
 }
 

SerialChannel.cpp

@@ -1,29 +1,72 @@
 #include "Arduino.h"
 #include "SerialChannel.h"
 
-short SerialChannel::nextId = 0;
+byte SerialChannel::nextId = 1;
+SerialChannel* SerialChannel::first = 0;
 
-SerialChannel::SerialChannel()
+SerialChannel::SerialChannel(const char* name_)
+    : next(0)
+    , id((byte)-1)
+    , name(name_)
 {
+    if(first == 0)
+        first = this;
+    else
+    {
+        SerialChannel* c = first;
+        while(c->next != 0) c = c->next;
+        c->next = this;
     }
     
-void SerialChannel::init(const char* name)
-{
     id = nextId++;
-    Serial.write((short)0);
-    Serial.write(id);
-    Serial.write(strlen(name));
-    Serial.write(name);
 }
 
-void SerialChannel::write(byte* data, short byteCount)
+void SerialChannel::write(byte* data, short byteCount, unsigned long time)
 {
-    Serial.write(byteCount);
+    if (time == (unsigned long)-1)
+        time = micros();
+        
+    handleConnection();
+
+    Serial.write("START");
     Serial.write(id);
+    writeULong(time);
+    writeShort(byteCount);
     Serial.write(data, byteCount);
 }
 
-void SerialChannel::write(const char* text)
+void SerialChannel::write(const char* text, unsigned long time)
 {
-    Serial.write((byte*)text, strlen(text));
+    write((byte*)text, strlen(text), time);
 }
+
+void SerialChannel::writeShort(short num)
+{
+    Serial.write((byte*)&num, 2);
+}
+
+void SerialChannel::writeULong(unsigned long num)
+{
+    Serial.write((byte*)&num, 4);
+}
+
+void SerialChannel::handleConnection()
+{
+    int b = Serial.read();
+    if(b == (int)'C')
+    {
+        Serial.write("CONNECTION");
+        SerialChannel* c = first;
+        while(c)
+        {
+            Serial.write("START");
+            Serial.write(0);
+            Serial.write("ChannelInit");
+            Serial.write(c->id);
+            writeShort(strlen(c->name));
+            Serial.write(c->name);
+            c = c->next;
+        }
+    }
+}
+

SerialChannel.h

@@ -4,17 +4,24 @@
 class SerialChannel
 {
 private:
-    static short nextId;
-    short id;
+    static SerialChannel* first;
+    SerialChannel* next;
+    
+    static byte nextId;
+    byte id;
+    const char* name;
 
 public:
-    SerialChannel();
+    SerialChannel(const char* name_);
     
-    void init(const char* name);
+    void write(byte* data, short byteCount, unsigned long time = (unsigned long)-1);
     
-    void write(byte* data, short byteCount);
+    void write(const char* text, unsigned long time = (unsigned long)-1);
     
-    void write(const char* text);
+private:
+    void handleConnection();
+    void writeShort(short num);
+    void writeULong(unsigned long num);
 };
 
 #endif

SerialMonitor/SerialMonitor/App.xaml

@@ -4,5 +4,15 @@
              StartupUri="MainWindow.xaml">
     <Application.Resources>
 
+        <Style x:Key="Console" TargetType="{x:Type TextBlock}">
+            <Setter Property="TextWrapping" Value="NoWrap"/>
+            <Setter Property="TextTrimming" Value="None"/>
+            <Setter Property="Foreground" Value="White"/>
+            <Setter Property="Background" Value="Black"/>
+        </Style>
+        <Style x:Key="Oscilloscope" TargetType="{x:Type Canvas}">
+            <Setter Property="Background" Value="White"/>
+        </Style>
+
     </Application.Resources>
 </Application>

SerialMonitor/SerialMonitor/App.xaml.cs

@@ -2,9 +2,14 @@
 using System.Collections.Generic;
 using System.Configuration;
 using System.Data;
+using System.Diagnostics;
+using System.IO.Ports;
 using System.Linq;
+using System.Text;
 using System.Threading.Tasks;
 using System.Windows;
+using System.Windows.Shapes;
+using System.Windows.Threading;
 
 namespace SerialMonitor
 {
@@ -13,5 +18,83 @@ namespace SerialMonitor
     /// </summary>
     public partial class App : Application
     {
+        private SerialPort Serial;
+        private IDictionary<int, string> Channels = new Dictionary<int, string>();
+        private bool Connected = false;
+
+        protected override void OnStartup(StartupEventArgs e)
+        {
+            base.OnStartup(e);
+
+            Serial = new SerialPort();
+            Serial.PortName = "COM4";
+            Serial.BaudRate = 9600;
+
+            Serial.DataReceived += new System.IO.Ports.SerialDataReceivedEventHandler(OnDataReceived);
+
+            Serial.Open();
+        }
+
+        private void OnDataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
+        {
+            if (!Connected)
+            {
+                Serial.Write("C");
+                Serial.ReadTo("CONNECTION");
+                Connected = true;
+            }
+
+            // channel declaration message: byte 0 ; string "ChannelInit" ; byte <channel id> ; short <length> ; byte[length] <channel name>
+            // regular message: byte <channel id> ; short <length> ; byte[length] <data>
+
+            SerialMessage message = null;
+
+            Serial.ReadTo("START");
+
+            int id = Serial.ReadByte();
+            if (id == 0)
+            {
+                string check = Encoding.UTF8.GetString(Serial.ReadBytes(11));
+                if (check != "ChannelInit")
+                    throw new Exception("Incorrect data check for channel initialization");
+                id = Serial.ReadByte();
+                int length = Serial.ReadShort();
+                string name = Encoding.UTF8.GetString(Serial.ReadBytes(length));
+                Channels[id] = name;
+                message = new SerialMessage { ChannelName = "debug", StringData = "Channel " + name + " opened", SendTime = 0 };
+            }
+            else
+            {
+                ulong sendTime = Serial.ReadULong();
+                int length = Serial.ReadShort();
+                byte[] data = Serial.ReadBytes(length);
+                message = new SerialMessage { ChannelName = Channels[id], Data = data, SendTime = sendTime };
+            }
+
+            if(message != null)
+                Dispatcher.BeginInvoke(DispatcherPriority.Normal, new Action(() => OnMessageReceived(message)));
+        }
+
+        private void OnMessageReceived(SerialMessage message)
+        {
+            switch (message.ChannelName)
+            {
+                case "debug":
+                    string text = ((float)message.SendTime / 1000000).ToString("0.000") + "s " + message.StringData;
+                    //Debug.WriteLine(text);
+                    MainWindowContext.Get.WriteLine(text);
+                    break;
+                case "oscilloscope":
+                    /*float visibleDuration = 10.0f;
+                    float sampleDelay = 0.000936f;
+                    float startOffset = (float)message.SendTime / 1000000;
+                    for (int i = 1; i < message.Data.Length; ++i )
+                    {
+                        var line = new Line();
+                        canvas.Children.Add(line);
+                    }*/
+                    break;
+            }
+        }
     }
 }

SerialMonitor/SerialMonitor/MainWindow.xaml

@@ -1,8 +1,11 @@
 <Window x:Class="SerialMonitor.MainWindow"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-        Title="MainWindow" Height="350" Width="525">
+        Title="Serial Monitor" Height="396" Width="629">
     <Grid>
-        
+        <TextBlock TextWrapping="Wrap" VerticalAlignment="Bottom" Height="150" Text="{Binding ConsoleText}" Style="{DynamicResource Console}" Grid.ColumnSpan="2"/>
+        <ScrollViewer HorizontalScrollBarVisibility="Visible" Margin="0,0,0,155" Grid.ColumnSpan="2">
+            <Canvas Style="{DynamicResource Oscilloscope}"/>
+        </ScrollViewer>
     </Grid>
 </Window>

SerialMonitor/SerialMonitor/MainWindow.xaml.cs

@@ -23,6 +23,9 @@ namespace SerialMonitor
         public MainWindow()
         {
             InitializeComponent();
+            var context = new MainWindowContext();
+            context.WriteLine("Connecting...");
+            this.DataContext = context;
         }
     }
 }

SerialMonitor/SerialMonitor/MainWindowContext.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SerialMonitor
+{
+    public class MainWindowContext : INotifyPropertyChanged
+    {
+        public MainWindowContext()
+        {
+            Get = this;
+        }
+
+        public static MainWindowContext Get { get; private set; }
+
+        private List<string> Lines = new List<string>();
+        public string ConsoleText { get { return String.Join("\n", Lines); } }
+
+        public void WriteLine(string line)
+        {
+            Lines.Add(line);
+            if (Lines.Count > 9)
+                Lines.RemoveAt(0);
+            OnPropertyChanged("ConsoleText");
+        }
+
+        public event PropertyChangedEventHandler PropertyChanged;
+        protected void OnPropertyChanged(string name)
+        {
+            PropertyChangedEventHandler handler = PropertyChanged;
+            if (handler != null)
+            {
+                handler(this, new PropertyChangedEventArgs(name));
+            }
+        }
+    }
+}

SerialMonitor/SerialMonitor/SerialMessage.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SerialMonitor
+{
+    public class SerialMessage
+    {
+        public string ChannelName { get; set; }
+        
+        /// <summary>
+        /// Time at which the message was sent, in microseconds since the start of the remote executable
+        /// </summary>
+        public ulong SendTime { get; set; }
+
+        public byte[] Data { get; set; }
+
+        public string StringData
+        {
+            get { return Encoding.UTF8.GetString(Data); }
+            set { Data = Encoding.UTF8.GetBytes(value); }
+        }
+    }
+}

SerialMonitor/SerialMonitor/SerialMonitor.csproj

@@ -53,6 +53,9 @@
       <Generator>MSBuild:Compile</Generator>
       <SubType>Designer</SubType>
     </ApplicationDefinition>
+    <Compile Include="MainWindowContext.cs" />
+    <Compile Include="SerialMessage.cs" />
+    <Compile Include="SerialPortExtensions.cs" />
     <Page Include="MainWindow.xaml">
       <Generator>MSBuild:Compile</Generator>
       <SubType>Designer</SubType>

SerialMonitor/SerialMonitor/SerialPortExtensions.cs

@@ -0,0 +1,44 @@
+using System;
+using System.Collections.Generic;
+using System.IO.Ports;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SerialMonitor
+{
+    public static class SerialPortExtensions
+    {
+        public static int ReadShort(this SerialPort port)
+        {
+            int b1 = port.ReadByte();
+            int b2 = port.ReadByte();
+            return b2 * 256 + b1;
+        }
+
+        public static ulong ReadULong(this SerialPort port)
+        {
+            ulong b1 = (ulong)port.ReadByte();
+            ulong b2 = (ulong)port.ReadByte();
+            ulong b3 = (ulong)port.ReadByte();
+            ulong b4 = (ulong)port.ReadByte();
+            return b4 * 256 * 256 * 256 + b3 * 256 * 256 + b2 * 256 + b1;
+        }
+
+        public static byte[] ReadBytes(this SerialPort port, int numBytes)
+        {
+            var bytes = new byte[numBytes];
+            int remaining = numBytes;
+            int pos = 0;
+            while (remaining > 0)
+            {
+                int read = port.Read(bytes, pos, remaining);
+                if (read < 0)
+                    throw new Exception("Connection closed");
+                remaining -= read;
+                pos += read;
+            }
+            return bytes;
+        }
+    }
+}