Project I: Get Date Time Information from GPS data packet.

GPS data packet contains not just location information, it also has the time information in certain data packets. We can use the time information to adjust the Pocket PC clock, based on the Time Zone information it stored.

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Project II: Calculate the Sun Rise and Sun Set time based on GPS information.

Provide Get_Dawn() and Get_Dusk() function calls based on the Sun Rise and Sun Set time:

Dawn = 45 minutes after Sun Rise.

Dusk = 45 minutes before Sun Set.

The Sun Rise and Sun Set algorithm referenced:

Sun's position: http://www.stjarnhimlen.se/comp/riset.html

Sun's Approximate position: http://aa.usno.navy.mil/faq/docs/SunApprox.html

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Project III: Lights Up, Blinks and Turns Off the middle LED on PocketPC

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Project IV: Heartbeat Program to Test if the COM port of PocketPC is still alive

Project V: To find the right COM port of the Bluetooth Driver in PocketPC.

Project VI: To make file Read-Only and/or Hidden in PocketPC.

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Project VII: Com Port finder for PocketPC.

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Project VIII: Retrieve Device ID of the PocketPC

[DllImport("coredll.dll", SetLastError=true)]
		private static extern bool KernelIoControl(Int32 IoControlCode, IntPtr
			InputBuffer, Int32 InputBufferSize, byte[] OutputBuffer, Int32
			OutputBufferSize, ref Int32 BytesReturned);
		
		private static Int32 FILE_DEVICE_HAL = 0x00000101;
		private static Int32 FILE_ANY_ACCESS = 0x0;
		private static Int32 METHOD_BUFFERED = 0x0;
		private const Int32 ERROR_NOT_SUPPORTED = 0x32;
		private const Int32 ERROR_INSUFFICIENT_BUFFER = 0x7A;

		private static Int32 IOCTL_HAL_GET_DEVICEID = 
			((FILE_DEVICE_HAL) << 16) | ((FILE_ANY_ACCESS) << 14) 
			| ((21) << 2) | (METHOD_BUFFERED);

		private static string GetDeviceID()
		{
			byte[] OutputBuffer = new byte[256];
			Int32 OutputBufferSize, BytesReturned;
			OutputBufferSize = OutputBuffer.Length;
			BytesReturned = 0;

			// Call KernelIoControl passing the previously defined
			// IOCTL_HAL_GET_DEVICEID parameter
			// We don’t need to pass any input buffers to this call
			// so InputBuffer and InputBufferSize are set to their null
			// values
			bool retVal = KernelIoControl(IOCTL_HAL_GET_DEVICEID, IntPtr.Zero, 0,
					OutputBuffer, OutputBufferSize, ref BytesReturned);

			// If the request failed, exit the method now
			if (retVal == false)
			{
			    int error = Marshal.GetLastWin32Error();
				switch (error)
				{
					case ERROR_NOT_SUPPORTED:
						return ("ID not supported");
					case ERROR_INSUFFICIENT_BUFFER:
						return("Insufficient buffer");
					default:
						return ("Unknown Error!");
				}
				//return null;
			}
    
			// Examine the OutputBuffer byte array to find the start of the 
			// Preset ID and Platform ID, as well as the size of the
			// PlatformID.
			// PresetIDOffset – The number of bytes	the preset ID is offset 
			// from the beginning of the structure
			// PlatformIDOffset  -	The number of bytes  the platform ID is
			// offset from the beginning of  the structure 
			// PlatformIDSize -  The number of bytes used  to  store the 
			// platform ID 
			// Use BitConverter.ToInt32() to convert from byte[] to	int
			
			Int32 PresetIDOffset =  
			  BitConverter.ToInt32(OutputBuffer,
			4);
			Int32 PlatformIDOffset = 

			BitConverter.ToInt32(OutputBuffer, 0xc);
			Int32 PlatformIDSize =   BitConverter.ToInt32(OutputBuffer,
					0x10); 
			// Convert the Preset ID segments into a string so they can	be 
			// displayed easily.
			    StringBuilder sb = 
			         new StringBuilder();
			sb.Append(String.Format("{0:X8}-{1:X4}-{2:X4}-{3:X4}-",
			    BitConverter.ToInt32(OutputBuffer, PresetIDOffset),
				BitConverter.ToInt16(OutputBuffer, PresetIDOffset +4),
				 BitConverter.ToInt16(OutputBuffer, PresetIDOffset +6),
				 BitConverter.ToInt16(OutputBuffer, PresetIDOffset +8)));
			// Break  the Platform ID down  into 2-digit hexadecimal numbers
			// and	append them to the Preset ID. This will result in a 
			// string-formatted Device ID
			for (int i =  PlatformIDOffset; i <  PlatformIDOffset +   PlatformIDSize; 
				i ++ )  
			{
				sb.Append( String.Format("{0:X2}", OutputBuffer[i]));
			}
    
			// return the Device ID string
			return sb.ToString();
		}

Project IX: Capture Hotkeys in PocketPC

Windows CE Virtual Keys Defintion:

Download Sample Source Code in eMbedded VC++

To capture Hardware Button codes:

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