private static void TestCRC16(CRC16Type type, params IEnumerable <byte>[] testValues)
{
foreach (var testValue in testValues)
{
Console.WriteLine("------------------------------------------------------------------");
Console.WriteLine($"CRC16 [{type}] test for source [{testValue.ToHexString()}]");
Console.WriteLine($"crc is 0x{testValue.CRC16(type).ToString("x4")}");
Console.WriteLine($"source + crc is 0x{testValue.WithCRC16(type).ToHexString()}");
Console.WriteLine("------------------------------------------------------------------");
}
}
/*******************************************/
/// <summary>
/// This function returns the byte array included crc16 value.
/// </summary>
/// <param name="data"></param>
/// <param name="type">This parameter means crc16 algorithm type.</param>
/// <returns></returns>
/*******************************************/
public static IEnumerable <byte> WithCRC16(this IEnumerable <byte> data, CRC16Type type = CRC16Type.Basic)
{
if (type == CRC16Type.Basic)
{
return(data.AppendRange(BitConverter.GetBytes(CRC.ComputeCRC16(data))));
}
else if (type == CRC16Type.CCITTxModem)
{
return(data.AppendRange(BitConverter.GetBytes(CRC.ComputeCCITTxModem(data))));
}
else if (type == CRC16Type.DNP)
{
return(data.AppendRange(BitConverter.GetBytes(CRC.ComputeDNP(data))));
}
return(new List <byte>());
}
/*******************************************/
/// <summary>
/// This function returns the CRC16 value.
/// </summary>
/// <param name="data"></param>
/// <param name="type">This parameter means crc16 algorithm type.</param>
/// <returns></returns>
/*******************************************/
public static ushort CRC16(this IEnumerable <byte> data, CRC16Type type = CRC16Type.Basic)
{
ushort result = 0;
if (type == CRC16Type.Basic)
{
result = CRC.ComputeCRC16(data);
}
else if (type == CRC16Type.CCITTxModem)
{
result = CRC.ComputeCCITTxModem(data);
}
else if (type == CRC16Type.DNP)
{
result = CRC.ComputeDNP(data);
}
return(result);
}
