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GENERATING AND CHECKING CRC CODES

Sean E. O'Connor

Overview

C++ software for a program which generates and checks CRC (Cyclic Redundancy Check) codes.

Features:

Can work with any size CRC code up to 32 bits.
Well commented source code, easy to extend.

Drawbacks:

Not optimized for speed yet --- I'm working a table lookup method.

References: See my mathematical tutorial on CRC definition and properties. I also have an example generated by Mathematica showing CRC encoding and decoding. Ross Williams has description of various CRC implemenations.

Setup and Run

On my Windows XP PC system, I use the free Bloodshed C++ compiler which is an IDE based on the GNU Cygwin toolset which I also use for command line compiling and debugging. I also use the Microsoft C++ compiler . For details on the C++ language, see Bjarne Stroustrup's Page and C++ FAQ Lite and the Standard Template Library.

Download Source Code

Source code is distributed under the terms of the GNU General Public License The current version is 2.1

Click on the symbol to view and download the source files below.
Download crcCode.h	This is the CRC code class.
Download crcCode.cpp	Member functions of the CRC code class.
Download shiftRegister.h	This is the class defining a binary linear feedback shift register.
Download shiftRegister.cpp	Member functions of the shift register class.
Download testCRC.cpp	Main unit test program.
Download makefile	Makefile for Cygwin.

On PC's with Bloodshed C++ or Microsoft Visual C++, create a new console application and add all source files to your project, then build them.

On a Unix system, or with Cygwin, download and modify the makefile. Compile the program which runs in a command window. --- my thanks to Thomas Huber for this information.

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