File and class renaming

Crc8.cs

@@ -0,0 +1,52 @@
+namespace OneWireAPI
+{
+    internal class Crc8
+    {
+        private static byte[] _dataTable;		// Lookup table of CRC8 values
+
+        static Crc8()
+        {
+            // Initialize the CRC lookup table
+            InitializeCrcTable();
+        }
+
+        private static void InitializeCrcTable()
+        {
+            // Initialize the size of the lookup table
+            _dataTable = new byte[256];
+
+            for (var outer = 0; outer < 256; outer++)
+            {
+                var accumulator = outer;    // Accumulator value
+                var crc = 0;				// CRC value
+
+                for (var inner = 0; inner < 8; inner++)
+                {
+                    if (((accumulator ^ crc) & 0x01) == 0x01)
+                        crc = ((crc ^ 0x18) >> 1) | 0x80;
+                    else
+                        crc = crc >> 1;
+
+                    accumulator = accumulator >> 1;
+                }
+
+                _dataTable[outer] = (byte) crc;
+            }
+        }
+
+        public static short Calculate(byte[] data, int start, int end)
+        {
+            var currentCrc = (short) 0;     // Current CRC accumulator
+
+            // Loop over all bytes in the input array
+            for (var index = start; index <= end; index++)
+            {
+                // Calculate the current CRC for this position
+                currentCrc = _dataTable[currentCrc ^ data[index]];
+            }
+
+            // Return the final CRC value
+            return currentCrc;
+        }
+    }
+}