Hai all,
Can any one help me in calculating this 11 bit CRC using the following algorithm i think its little bit tricky.Can any one please tell me how to calculate the CRC by using this please tell me.I am giving the algorithm and all the data can any one reply.
The following pseudo code summarizes the CRC calculation algorithm:
vCrcReg(vCrcSize - 1 : 0) = vCrcInit; // Initialize the CRC register
while(vNextBit)
// determine if the CRC polynomial has to be applied by taking
// the exclusive OR of the most significant bit of the CRC register
// and the next bit to be fed into the register
vCrcNext = vNextBit EXOR vCrcReg(vCrcSize - 1);
// Shift the CRC register left by one bit
vCrcReg (vCrcSize - 1 : 1) = vCrcReg(vCrcSize - 2 : 0);
vCrcReg(0) = 0;
// Apply the CRC polynomial if necessary
if vCrcNext
vCrcReg(vCrcSize - 1 : 0) = vCrcReg(vCrcSize - 1 : 0) EXOR vCrcPolynomial;
end; // end if
end; // end while loop
parameters to be used in above algorithm
vCrcSize = cHCrcSize; // (= 11) size of the register is 11 bits
vCrcInit = cHCrcInit; // (= 0x1A) initialization vector of header
// CRC
vCrcPolynomial = cHCrcPolynomial; // (= 0x385) hexadecimal representation of
// the header CRC polynomial
Vnext bit is 00000000000100111111
Can any one please help me in calculating this and how to claculate it.
Thanks in advance,
Thanking you,
Bye,
saurav99.
--
Alban Edit: Please always include FSL Part Number in Message Subject line.
Message Edited by Alban on 2007-09-18 06:17 PM
