/// <summary>
/// 补充校验码
/// </summary>
/// <param name="modbusdata">MODUBS协议数据</param>
/// <param name="crcOnly">是否只返回校验码</param>
/// <param name="split">每个字节间是否使用空格分割</param>
/// <returns>
/// 16进制字符串
/// </returns>
public static String CRC(byte[] modbusdata, Boolean crcOnly, Boolean split)
{
int num = (int)ushort.MaxValue;
for (int index1 = 0; index1 < modbusdata.Length; ++index1)
{
num ^= (int)modbusdata[index1];
for (int index2 = 0; index2 < 8; ++index2)
{
if ((num & 1) == 1)
{
num = num >> 1 ^ 40961;
}
else
{
num >>= 1;
}
}
}
String crc = ((byte)num).ToString("X2") + (split ? " " : "") + (num >> 8).ToString("X2");
if (crcOnly)
{
return(crc);
}
else
{
return(HexUtils.BytesToHexString(modbusdata, split) + " " + crc);
}
}
/// <summary>
/// 补充校验码
/// </summary>
/// <param name="address">地址码</param>
/// <param name="func">功能码</param>
/// <param name="data">数据</param>
/// <returns>
/// 16进制字符串
/// </returns>
public static String CRC(String address, String func, String data)
{
return(CRC(HexUtils.HexStringToBytes(address + " " + func + " " + data), false, true));
}
/// <summary>
/// 补充校验码
/// </summary>
/// <param name="address">地址码</param>
/// <param name="func">功能码</param>
/// <param name="data">数据</param>
/// <param name="crcOnly">是否只返回校验码</param>
/// <param name="split">每个字节间是否使用空格分割</param>
/// <returns>
/// 16进制字符串
/// </returns>
public static String CRC(String address, String func, String data, Boolean crcOnly, Boolean split)
{
return(CRC(HexUtils.HexStringToBytes(address + " " + func + " " + data), crcOnly, split));
}
