crc串口通信校验

 using System;

namespace CRC8
{
 /// <summary>
 /// CRCIO 的摘要说明。
 /// </summary>
 public class CRCIO
 {
  public CRCIO()
   {
 
   }
  public static int GetKey(byte[] data)
  {
   int count = data.Length;
   byte[] buf = new byte[data.Length+2];
   data.CopyTo(buf,0);
   int ptr = 0;
   int i = 0;
   int crc = 0;
   byte crc1,crc2,crc3;
   crc1 = buf[ptr++];
   crc2 = buf[ptr++];
   buf[count] = 0;
   buf[count+1] = 0;
   while(--count >= 0)
   {
    crc3 = buf[ptr++];
    for(i =0;i<8;i++)
   &