在此推导出CRC编码算法原理及其C语言的3种实现方法,给出适应不同计算机或微控制器硬件环境的C语言程序.用C语言编写实用的CRC计算程序,并通过实验测试3种方法的效果,分析这3种线性编码与差错控制方法,其目的是提高在S3C2410AL-20微处理器系统中进行二次开发的效率,解决在选择微处理器时容量与速度之间的矛盾.实验结果证明选用C语言实现CRC编码算法可以在编码效率和内存占有率上获得较好的效果.%The principle of CRC coding algorithm and three realization methods of C programming language are deduced, and the C program which adapted to different computer or micro controller hardware environment is provided. Programming a practical CRC calculation program with C programming language, testing effect of three methods through experiment, and analyzing these three kinds of linear coding and error control method, whose purpose is to improve efficiency of the secondary development in S3C2410AL-20 microprocessor system, and solve the contradiction between the capacity and speed during the choice of microprocessor. Experimental results prove that using C language to realize CRC coding algorithm can get better effect in the coding efficiency and memory share.
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