CRC, C语言, rc CRC原理介绍: CRC的英文全称为Cyclic Redundancy Check(Code),中文名称为循环冗余校验(码)。它是一类重要的线性分组码,编码和解码方法简单,检错和纠错能力强,在通信领域广泛地用于实现差错控制。 CRC计算与普通的除法计算有所不同。普通的除法计算是借位相减的,而CRC计算则是异或运算。任何一个除...
//CRC计算主函数: //内容: #include CrcCode.h PLC using namespace std;unsigned short int CrcCode::CrcCode16(const char *CrcSrcCode,const size_t CodeLength) { unsigned short CRC_Code[]={ 0x0673,0x1652,0x2631,0x3610,0x46F7,0x56D6,0x66B5,0x7694,0x877B,0x975A,//10 0xA739,0xB7...
/CRC计算主函数:/内容:#include "CrcCode.h"PLC using namespace std;unsigned short int CrcCode:CrcCode16(const char *CrcSrcCode 6、,const size_t CodeLength) unsigned short CRC_Code= 0x0673,0x1652,0x2631,0x3610,0x46F7,0x56D6,0x66B5,0x7694,0x877B,0x975A,/10 &# 7、160; 0xA739,...
在CRC计算时只用8个数据位,起始位及停止位,如有奇偶校验位也包括奇偶校验位,都不参与CRC计算。 CRC计算方法是: 1、 预置1个16位的寄存器为十六进制FFFF(全1),此寄存器为CRC寄存器 unsigned short wcrc = 0xFFFF; //16位CRC寄存器预置 2、 把第一
// check_code = x15,判断被除数位数>=16 //check_code是为了每次做异或运算时保证位数是足够的 unsigned long table[256]; void build_16(unsigned long poly) { unsigned long x; unsigned long t; /* 这里是将原始数据直接写入到t中 for (unsigned long i=0; i<256; i++) ...
I then looked at the actual assembly code produced by the compiler and counted the instructions inside the outer for loop in both cases. In this experiment, I was specifically targeting the PIC16C67 variant of the processor, using IAR Embedded Workbench 2.30D (PICmicro engine 1.21A). This ...
#include <iostream>#include<cstdio>usingnamespacestd;#defineCRC_16 0x18005//CRC-16 = X16 + X15 + X2 + X0#defineCRC_CCITT 0x11021//CRC-CCITT = X16 + X12 + X5 + X0#defineCRC_32 0x104C11DB7//CRC-32 = X32 + X26 + X23 + X22 + X16 + X11 + X10 + X8 + X7 + X5 + X4...
As the DMA manages data transfer, it becomes the alternative for computing the CRC checksum code of the data buffer. AN4187 Rev 2 9/16 15 Using CRC through DMA 2 Using CRC through DMA AN4187 2.1 The STM32 embedded DMA can be used as the data transfer handler to avoid the use ...
14 * computed using the standard bit-at-a-time methods. The polynomial can15 * be seen in entry 128, 0x8408. This corresponds to x^0 + x^5 + x^12.16 * Add the implicit x^16, and you have the standard CRC-CCITT.17 */
Extended Capabilities expand all C/C++ Code Generation Generate C and C++ code using MATLAB® Coder™. Version History Introduced in R2024a See Also Functions crcGenerate | crcDetect Blocks General CRC Generator | General CRC Syndrome Detector Topics Error Detection and CorrectionWhy...