User`s manual

41
Interfacing to the DDF7001 Direction Finder
0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41, 0xEE01, 0x2EC0, 0x2F80, 0xEF41,
0x2D00, 0xEDC1,
0xEC81, 0x2C40, 0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681,
0x2640, 0x2200,
0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041, 0xA001, 0x60C0,
0x6180, 0xA141,
0x6300, 0xA3C1, 0xA281, 0x6240, 0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501,
0x65C0, 0x6480,
0xA441, 0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41,
0xAA01, 0x6AC0,
0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840, 0x7800, 0xB8C1, 0xB981,
0x7940, 0xBB01,
0x7BC0, 0x7A80, 0xBA41, 0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1,
0xBC81, 0x7C40,
0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640, 0x7200,
0xB2C1, 0xB381,
0x7340, 0xB101, 0x71C0, 0x7080, 0xB041, 0x5000, 0x90C1, 0x9181, 0x5140,
0x9301, 0x53C0,
0x5280, 0x9241, 0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481,
0x5440, 0x9C01,
0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40, 0x5A00, 0x9AC1,
0x9B81, 0x5B40,
0x9901, 0x59C0, 0x5880, 0x9841, 0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00,
0x8BC1, 0x8A81,
0x4A40, 0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41,
0x4400, 0x84C1,
0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641, 0x8201, 0x42C0, 0x4380,
0x8341, 0x4100,
0x81C1, 0x8081, 0x4040
};
// DESCRIPTION: Calculates the CRC-16 value of a buffer of data
//
// INPUT: *data Pointer to the data buffer
// INPUT: NumBytes Number of bytes to read for CRC
short CalcCRC16 (char *Data, short NumBytes)
{
unsigned int i;
u8 CRCLoByte;
u16 CRCResult;
CRCResult = 0x0000;
for (i = 0; i < NumBytes; i++)
{
CRCLoByte = (u8)(CRCResult & 0x00FF);
CRCResult = ((CRCResult & 0xFF00) >> 8) ^ CRCTable[*Data++ ^
CRCLoByte];
}
return CRCResult;
}