/// <summary>
///
/// </summary>
/// <param name="type">位数</param>
/// <param name="initialValue">初始值</param>
public CrcCcitt(CrcType type, InitialCrcValue initialValue = InitialCrcValue.Zeros)
{
crcType = type;
if (crcType == CrcType.CRC_16)
{
initialCrcValue = initialValue;
this.initialValue = (ushort)initialValue;
ushort temp, a;
for (int i = 0; i < table.Length; i++)
{
temp = 0;
a = (ushort)(i << 8);
for (int j = 0; j < 8; j++)
{
if (((temp ^ a) & 0x8000) != 0)
{
temp = (ushort)((temp << 1) ^ polynominal);
}
else
{
temp <<= 1;
}
a <<= 1;
}
table[i] = temp;
}
}
}
public static extern short TMCRC(short length, byte[] data, ushort seed, CrcType type);
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
CrcType crc = (CrcType)value;
return(crc.GetDisplayName());
}
