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### Highlights from CRC code generator

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# CRC code generator

### Nawaz Satvilkar (view profile)

14 Mar 2007 (Updated )

Code generates CRC code for any binary data stream & generator polynomial

File Information
Description

The standard polynomials are not used to make it more flexible.
User provide data stream and generator polynomial.

Required Products Communications System Toolbox
MATLAB release MATLAB 7.0.4 (R14SP2)
03 Jan 2015 miao zhang

### miao zhang (view profile)

good job!Once I have had the code for CRC32,how can I input datastream to get my output? thanks for answering,it is the first time that I touch Matlab.

28 Mar 2014 nagaraju

### nagaraju (view profile)

15 May 2013 chandrahas

### chandrahas (view profile)

clc;
close all;
clear all;
x = input('enter data word');
y = input('enter pattern word');
p = length(y);
k = length(x);
n = p+k-1;
dw = x;
for z=1:(n-k)
dw(k+z) = 0;
end
for z=1:p
td(z)= dw(z);
tr2(z)=0;
tr3(z)=1;
end
tr = xor(td,y);
while(1)
z=z+1;
if(z>n)
break;
end

tr(p+1)=dw(z);
for l=2:(p+1)
tr1(l-1)=tr(l);
end

tr = tr1;
if(tr(1)==0)
tr=xor(tr,tr2);
else
tr=xor(tr,y);
end
end
cd=x;
for z=2:p
cd(k+z-1)=tr(z);
end
disp(cd);

%try this..........

Comment only
04 Aug 2011 rakesh

### rakesh (view profile)

can any one help me to write a code for crc-6 in matlab please

dis my id:rakeshreddy255@gmail.com

regards
rakesh

Comment only
10 Dec 2009 George Nychis

### George Nychis (view profile)

CRC 32 code:
http://www.cs.washington.edu/homes/dhalperi/useful/crc32.m

Comment only
20 Oct 2009 ATM

### ATM (view profile)

grat c> i think your calculation is worng. i hav calculated by hand as well, it gives crc=1 0 0.i think the code is correct.

thanks.

Comment only
19 Feb 2009 Jochen

### Jochen (view profile)

does not working correct for all generator polynomials, see previous comment.
code needs review. See text bosk or wikipedia for correct (pseudo) code

Comment only
14 Nov 2008 grat c

### grat c (view profile)

i used wiki's example to check for its correctness:
http://en.wikipedia.org/wiki/Cyclic_redundancy_check#Computation_of_CRC

msg = [1 1 0 1 0 0 1 1 1 0 1 1 0 0]; poly = [1 0 1 1];
the program gives r = 1 0 0

i've also tried to do the XORs by hand...
i found it is indeed 1 0 1, not sure where goes wrong

Comment only
29 Aug 2008 Jo Mateix

Was great! Thanks!

23 Jun 2008 Glen Klein

Communication toolbox is not required. Another reviewer (Andrea Silvestri) is right: "the for cycle could be replaced with on single line: r=mod(r,2) "

20 May 2008 li ming

hao

11 May 2008 Rudheesh Raghav

Good Work..

I feel the for loop is not required..

31 Mar 2008 Andrea Silvestri

Maybe the for cycle could be replaced with on single line: r=mod(r,2)

13 Mar 2008 N Fine

unstable and slow with long input vectors - better do everything above Z(2)

24 Nov 2007 Mohsin Shaikh )
25 Sep 2007 mona sherdiwala
23 Aug 2007 fred uit vosselaar

good code works fine for me. thanks a lot

21 Aug 2007 jef al

your code can only work if the number of data streams are below 360 bits. any higher bits gives error. using GFCONV method works fine

27 Jun 2007 sundas zahid

yeah the code is good but but it can be modified as to the input can be made real time....

24 May 2007 daty daty

I need CRC-32 in my simulations.
Should I take this script and change
the generator polynomial to find it ??