Added ColourWheel Demo Project

.gitignore

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+*.obj
+*.pdb
+*.user
+*.aps
+*.pch
+*.vspscc
+*_i.c
+*_p.c
+*.ncb
+*.suo
+*.tlb
+*.tlh
+*.bak
+*.cache
+*.ilk
+*.log
+*.lib
+*.sbr
+*.scc
+*.sdf
+[Bb]in
+[Dd]ebug*/
+obj/
+[Rr]elease*/
+_ReSharper*/
+[Tt]est[Rr]esult*
+[Bb]uild[Ll]og.*
+*.[Pp]ublish.xml
+BuildProcessTemplates/*
+Published/*
+[Tt]humbs.db
+[Uu]pgradeLog*.[Xx][Mm][Ll]
+_[Uu]pgradeReport_Files*/
+*.build.csdef
+[Pp]ackage/*
+ASPNETDB.MDF
+aspnetdb_log.ldf
+*.sap
+*/PerformanceLogs/*
+!Debugging

ColourWheel/ColorRGB.cs

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+namespace ColourWheel
+{
+    public struct ColorRGB
+    {
+        public uint R;
+        public uint G;
+        public uint B;
+
+        public static ColorRGB Hsl2Rgb(double h, double sl, double l)
+        {
+            double r = l;
+            double g = l;
+            double b = l;
+            double v = (l <= 0.5) ? (l * (1.0 + sl)) : (l + sl - l * sl);
+
+            if (v > 0)
+            {
+                double m = l + l - v;
+                double sv = (v - m) / v;
+                h *= 6.0;
+                int sextant = (int) h;
+                double fract = h - sextant;
+                double vsf = v * sv * fract;
+                double mid1 = m + vsf;
+                double mid2 = v - vsf;
+
+                switch (sextant)
+                {
+                    case 0:
+                        r = v;
+                        g = mid1;
+                        b = m;
+                        break;
+                    case 1:
+                        r = mid2;
+                        g = v;
+                        b = m;
+                        break;
+                    case 2:
+                        r = m;
+                        g = v;
+                        b = mid1;
+                        break;
+                    case 3:
+                        r = m;
+                        g = mid2;
+                        b = v;
+                        break;
+                    case 4:
+                        r = mid1;
+                        g = m;
+                        b = v;
+                        break;
+                    case 5:
+                        r = v;
+                        g = m;
+                        b = mid2;
+                        break;
+                }
+            }
+
+            ColorRGB rgb;
+            rgb.R = (uint) (r * 255.0f);
+            rgb.G = (uint) (g * 255.0f);
+            rgb.B = (uint) (b * 255.0f);
+            return rgb;
+        }
+    }
+}

ColourWheel/ColourWheel.csproj

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+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <AssemblyName>ColourWheel</AssemblyName>
+    <OutputType>Exe</OutputType>
+    <RootNamespace>ColourWheel</RootNamespace>
+    <ProjectTypeGuids>{b69e3092-b931-443c-abe7-7e7b65f2a37f};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ProductVersion>9.0.21022</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{13F1B785-AAEA-489D-A92C-862486DCF552}</ProjectGuid>
+    <TargetFrameworkVersion>v4.1</TargetFrameworkVersion>
+    <NetMfTargetsBaseDir Condition="'$(NetMfTargetsBaseDir)'==''">$(MSBuildExtensionsPath32)\Microsoft\.NET Micro Framework\</NetMfTargetsBaseDir>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <Import Project="$(NetMfTargetsBaseDir)$(TargetFrameworkVersion)\CSharp.Targets" />
+  <ItemGroup>
+    <Compile Include="ColorRGB.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="Program.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <Reference Include="Microsoft.SPOT.Hardware" />
+    <Reference Include="Microsoft.SPOT.Native" />
+    <Reference Include="Microsoft.SPOT.Net" />
+    <Reference Include="SecretLabs.NETMF.Hardware" />
+    <Reference Include="SecretLabs.NETMF.Hardware.NetduinoPlus" />
+    <Reference Include="System" />
+  </ItemGroup>
+</Project>

ColourWheel/ColourWheel.sln

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+
+Microsoft Visual Studio Solution File, Format Version 11.00
+# Visual Studio 2010
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ColourWheel", "ColourWheel.csproj", "{13F1B785-AAEA-489D-A92C-862486DCF552}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{13F1B785-AAEA-489D-A92C-862486DCF552}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{13F1B785-AAEA-489D-A92C-862486DCF552}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{13F1B785-AAEA-489D-A92C-862486DCF552}.Debug|Any CPU.Deploy.0 = Debug|Any CPU
+		{13F1B785-AAEA-489D-A92C-862486DCF552}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{13F1B785-AAEA-489D-A92C-862486DCF552}.Release|Any CPU.Build.0 = Release|Any CPU
+		{13F1B785-AAEA-489D-A92C-862486DCF552}.Release|Any CPU.Deploy.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

ColourWheel/Program.cs

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+using System.Threading;
+using SecretLabs.NETMF.Hardware;
+using SecretLabs.NETMF.Hardware.NetduinoPlus;
+
+namespace ColourWheel
+{
+    public class Program
+    {
+        public static void Main()
+        {
+            var ledR = new PWM(Pins.GPIO_PIN_D9);
+            var ledG = new PWM(Pins.GPIO_PIN_D6);
+            var ledB = new PWM(Pins.GPIO_PIN_D5);
+
+            while (true)
+            {
+                for (double i = 0; i < 1; i += 0.003)
+                {
+                    var c = ColorRGB.Hsl2Rgb(i, 1.0, 0.5);
+
+                    ledR.SetPulse(255, c.R);
+                    ledG.SetPulse(255, c.G);
+                    ledB.SetPulse(255, c.B);
+
+                    Thread.Sleep(25);
+                }
+            }
+        }
+    }
+}

ColourWheel/Properties/AssemblyInfo.cs

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+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("ColourWheel")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("ColourWheel")]
+[assembly: AssemblyCopyright("Copyright ©  2011")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

Readme.txt

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+Please see:
+http://jonrea.co.uk for all infromation relating to this code