/*----------------------------------------------------------------------------
* FUNCTION: CRC16
*---------------------------------------------------------------------------*/
unsigned short crc_16_rec (unsigned char *pucData, unsigned short ucLen) {
//--------------------------------------------------------------------
unsigned int i;
unsigned char ucBit, ucCarry;
//--------------------------------------------------------------------
unsigned short usPoly = 0x8408;//reversed 0x1021
unsigned short usCRC = 0;
//--------------------------------------------------------------------
for (i = 0; i < ucLen; i++) {
usCRC ^= pucData;
for (ucBit = 0; ucBit < 8; ucBit++) {
ucCarry = usCRC & 1;
usCRC >>= 1;
if (ucCarry) {
usCRC ^= usPoly;
}
}
}
//--------------------------------------------------------------------
return usCRC;
//--------------------------------------------------------------------
}