Lookup Table Metoduyla CRC hesabı

[yamak]

Lookup table metodu ile CRC hesabını tam olarak mantığı nedir.Kafamı karıştıran bir kaç şey var.
     -Lookup table'daki değerler neye göre belirleniyor.Yani nasıl hesaplanıyor.
     -Alıcı ve verici tafarlarda nasıl bir hesap yapılıyor.
Örneği Aşağıda'ki verici tarafına ait kodlar var bu kodların mantığı tam olarak nedir?

const unsigned int CRC_Table[]= 
{
    0x00,0x07,0x0E,0x09,0x1C,0x1B,0x12,0x15,
    0x38,0x3F,0x36,0x31,0x24,0x23,0x2A,0x2D,
    0x70,0x77,0x7E,0x79,0x6C,0x6B,0x62,0x65,
    0x48,0x4F,0x46,0x41,0x54,0x53,0x5A,0x5D,
    0xE0,0xE7,0xEE,0xE9,0xFC,0xFB,0xF2,0xF5,
    0xD8,0xDF,0xD6,0xD1,0xC4,0xC3,0xCA,0xCD,
    0x90,0x97,0x9E,0x99,0x8C,0x8B,0x82,0x85,
    0xA8,0xAF,0xA6,0xA1,0xB4,0xB3,0xBA,0xBD,
    0xC7,0xC0,0xC9,0xCE,0xDB,0xDC,0xD5,0xD2,
    0xFF,0xF8,0xF1,0xF6,0xE3,0xE4,0xED,0xEA,
    0xB7,0xB0,0xB9,0xBE,0xAB,0xAC,0xA5,0xA2,
    0x8F,0x88,0x81,0x86,0x93,0x94,0x9D,0x9A,
    0x27,0x20,0x29,0x2E,0x3B,0x3C,0x35,0x32,
    0x1F,0x18,0x11,0x16,0x03,0x04,0x0D,0x0A,
    0x57,0x50,0x59,0x5E,0x4B,0x4C,0x45,0x42,
    0x6F,0x68,0x61,0x66,0x73,0x74,0x7D,0x7A,
    0x89,0x8E,0x87,0x80,0x95,0x92,0x9B,0x9C,
    0xB1,0xB6,0xBF,0xB8,0xAD,0xAA,0xA3,0xA4,
    0xF9,0xFE,0xF7,0xF0,0xE5,0xE2,0xEB,0xEC,
    0xC1,0xC6,0xCF,0xC8,0xDD,0xDA,0xD3,0xD4,
    0x69,0x6E,0x67,0x60,0x75,0x72,0x7B,0x7C,
    0x51,0x56,0x5F,0x58,0x4D,0x4A,0x43,0x44,
    0x19,0x1E,0x17,0x10,0x05,0x02,0x0B,0x0C,
    0x21,0x26,0x2F,0x28,0x3D,0x3A,0x33,0x34,
    0x4E,0x49,0x40,0x47,0x52,0x55,0x5C,0x5B,
    0x76,0x71,0x78,0x7F,0x6A,0x6D,0x64,0x63,
    0x3E,0x39,0x30,0x37,0x22,0x25,0x2C,0x2B,
    0x06,0x01,0x08,0x0F,0x1A,0x1D,0x14,0x13,
    0xAE,0xA9,0xA0,0xA7,0xB2,0xB5,0xBC,0xBB,
    0x96,0x91,0x98,0x9F,0x8A,0x8D,0x84,0x83,
    0xDE,0xD9,0xD0,0xD7,0xC2,0xC5,0xCC,0xCB,
    0xE6,0xE1,0xE8,0xEF,0xFA,0xFD,0xF4,0xF3
};

static inline uint8_t FW_CRC (uint8_t temp_buf, uint8_t LastCRC)
{
	LastCRC = CRC_Table[LastCRC ^ temp_buf];
	
	return LastCRC;
}

void autoreport (int phx)
{
  uint16_t cc;
  int16_t TempVoltage;
  int16_t TempCurrent;
  int32_t TempPower;
  uint8_t *s = (ports[0].tx_msg.buf->uint8);
  
  if (ports[0].tx_msg.len == 0)  // if no message pending
  {
      s[0] = 0x68;
      // Report Voltage resoluton : 10mV, source 1mV
      TempVoltage = (int16_t)(rms_voltage (phx) / 10);
      s[1] = TempVoltage >> 8;
      s[2] = TempVoltage & 0xff;
      // Current resolution : 1mA, source 1uA
      TempCurrent = (int16_t)(rms_current (phx) / 1000);
      s[3]= TempCurrent >> 8;
      s[4]= TempCurrent & 0xff; 
      // Power resolution 1mW : source 1mW
      TempPower = active_power (phx);
      s[5] = TempPower >> 16;
      s[6] = (TempPower & 0xffff) >> 8;
      s[7] = TempPower & 0xff; 
      //PF resolution : 0.0001 
      s[8] = power_factor (phx) >> 8;
      s[9] = power_factor (phx) & 0xff; 
      //Frequency resolution : 0.01Hz
      s[10] = 0;
                   
      s[11] = 0;
      for (cc = 0 ; cc < 11 ; cc++)
      {
        s[11] = FW_CRC(s[cc], s[11]) ;
      }
       
      serial_write(0, s, 12);
//      ports[0].tx_msg.ptr = 0;
//      ports[0].tx_msg.len = 12;
  }
}

    -Bu şekilde gönderdiğim veriyi karşı tarafta nasıl çözerim?
Daha önce bu konu ile uğraşmış arkadaşlar yardımcı olabilirler mi acaba?

[Pyrodigy]

Microchip in CRC ile ilgili uygulama notlarını inceleyebilirsin.
http://ww1.microchip.com/downloads/en/AppNotes/00730a.pdf

[yamak]

Hocam o dökümanı oludum.Ama pek detaylı anlatmadığım için tam oturmadı.