Initial commit

owDeviceFamilyFF.cs

@@ -0,0 +1,172 @@
+using System;
+
+namespace OneWireAPI
+{
+	public class owDeviceFamilyFF : owDevice
+	{
+		#region Member variables
+
+		private int	m_iWidth		=	20;
+		private int	m_iHeight		=	4;
+
+		#endregion
+
+		#region Constructor
+
+		public owDeviceFamilyFF(owSession Session, short[] ID) : base(Session, ID)
+		{
+			// Just call the base constructor
+		}
+
+		#endregion
+
+		#region Methods
+
+		public void SetBackLight(bool State)
+		{
+			// Select the device
+			owAdapter.Select(_deviceID);
+
+			// Set the state of the backlight
+			owAdapter.SendByte((short) (State ? 0x8 : 0x7));
+		}
+
+		public void SetText(string Text)
+		{
+			string[]	sLines		= null;		// Array of lines
+			int			iLine		= 1;		// Line number
+
+            // Replace any CRLF pairs with just a newline
+            Text = Text.Replace("\r\n", "\n");
+			
+			// Split the input string at any newlines
+			sLines = Text.Split("\n".ToCharArray(), m_iHeight);
+
+			// Loop over each line
+			foreach (string sLine in sLines)
+			{
+				// Set the text of this line
+				SetText(sLine, iLine++);
+			}
+		}
+
+		public void SetText(string Text, int Line)
+		{
+			short	nMemoryPosition		= 0x00;			// Position at which to write the new string data
+			string	sSendData			= "";			// String data to send
+			byte[]	baData;								// Byte array of data to send
+			short	nDataCount			= 0;			// Amount of data to send
+
+			// Figure out the initial memory position based on the line number
+			switch (Line)
+			{
+				case 1:
+					nMemoryPosition = 0x00;
+					break;
+
+				case 2:
+					nMemoryPosition = 0x40;
+					break;
+
+				case 3:
+					nMemoryPosition = 0x14;
+					break;
+
+				case 4:
+					nMemoryPosition = 0x54;
+					break;
+			}
+
+			// Pad the text to the right width
+			Text = Text.PadRight(m_iWidth);
+
+			// The scratchpad is only 16 bytes long so we need to split it up
+			if (m_iWidth > 16)
+			{
+				// Select the device
+				owAdapter.Select(_deviceID);
+
+				// Set the data block to just the first 16 characters
+				sSendData = Text.Substring(0, 16);
+
+				// Initialize the data array
+				baData = new byte[18];
+
+				// Set the command to write to the scratchpad 
+				baData[nDataCount++] = 0x4E;
+
+				// Set the memory position
+				baData[nDataCount++] = (byte) nMemoryPosition;
+
+				// Add the text data to the data
+				foreach (byte bChar in System.Text.Encoding.Default.GetBytes(sSendData))
+					baData[nDataCount++] = bChar;
+
+				// Set the block
+				owAdapter.SendBlock(baData, nDataCount);
+
+				// Select the device
+				owAdapter.Select(_deviceID);
+
+				// Send the scratchpad data to the LCD
+				owAdapter.SendByte(0x48);
+
+				// Reset the device
+				owAdapter.Reset();
+
+				// Increment the memory position
+				nMemoryPosition += 16;
+
+				// Set the data to the rest of the line
+				sSendData = Text.Substring(16, m_iWidth - 16);
+			}
+			else
+			{
+				// Just set the data string to whatever was passed in
+				sSendData = Text;
+			}
+
+			// Select the device
+			owAdapter.Select(_deviceID);
+
+			// Initialize the data array
+			baData = new byte[18];
+
+			// Reset the data count
+			nDataCount = 0;
+
+			// Set the command to write to the scratchpad 
+			baData[nDataCount++] = 0x4E;
+
+			// Set the memory position
+			baData[nDataCount++] = (byte) nMemoryPosition;
+
+			// Add the text data to the data
+			foreach (byte bChar in System.Text.Encoding.Default.GetBytes(sSendData))
+				baData[nDataCount++] = bChar;
+
+			// Set the block
+			owAdapter.SendBlock(baData, nDataCount);
+
+			// Select the device
+			owAdapter.Select(_deviceID);
+
+			// Send the scratchpad data to the LCD
+			owAdapter.SendByte(0x48);
+
+			// Reset the device
+			owAdapter.Reset();
+		}
+
+		public void Clear()
+		{
+			// Select the device
+			owAdapter.Select(_deviceID);
+
+			// Clear the display
+			owAdapter.SendByte(0x49);
+		}
+
+		#endregion
+	}
+}