数据完整性和正确性的算法,常用于网络传输校验,压缩算法等等,简单来说,crc把一个待校验字符串当作一个非常大的整数,然后除以一个特定的数,所得的余数就是crc校验值,只不过在进行除法运算时,对二进制数加减采用模二运算,也即异或运算,详细的crc介绍请参考:https://www.lammertbies.nl/comm/info/crc-calculation....
Algorithm 1:static uint16_t MODBUS_CRC16_v1( const unsigned char *buf, unsigned int len ) { uint16_t crc = 0xFFFF; unsigned int i = 0; char bit = 0; for( i = 0; i < len; i++ ) { crc ^= buf[i]; for( bit = 0; bit < 8; bit++ ) { if( crc & 0x0001 ) { ...
下面是计算crc16 CCITT的工作代码。我测试了它，结果与http://www.lammertbies.nl/comm/info/crc-cal...
/ * CRC calculation, and then plus a remainder CRC * / Ptr++; } Return crc; } Program optimization strategy: the above procedures are only given the general algorithm, and did not take into account the characteristics of 51 microcontroller. We know that 51 single-chip microcomputer is ...
ThispaperintroducestheshiftalgorithmofCRC16checksumandanalysisthestructureandusageofS7-300PLC pointerdatatypeandANYdatatype,thenimplementthecalculationofCRC16checksumwiththesedatatype〃 Keywords:S7-300,PLC,Pointer,CRC16 西门子S7-300PLC与支持ModbusRTU协议的设备通 ...
关键词 S7 3 PLC 指针 CRC16AbstractThis paper introduces the shift algorithm of CRC 6 checksum and analysis the structure and usage of S7 PLCpointer data type and ANY data type,then implement the calculation of CRC 6 checksum with these data type Keywords:S7 ,PLC,Pointer,CRC 6图 CRC 6 ...
For the past low efficient serial algorithm of CRC16 CCITT checksum, the reason of calculation inefficiency is studied and a general purpose parallel algorithm is introduced. The parallel algorithm is realized by Verilog HDL and simulated under the Quartus II. The Nios II custo...
The CRC algorithm stops when the divident is equal to zero and thus the remainder equals exactly n bits. For CRC-8 this would be 8 bits. Respectively, it is 16 bits for CRC-16 and 32 bits for CRC-32. Practical Usage of the CRC 32 algorithm ...
My problem is, that I am not able to find the correct algorithm on the PC to get the same checksum as calculated by the FCE Kernel 2.I used the "SIMPLE" algorithm (chapter 8. of "A PAINLESS GUIDE TO CRC ERROR DETECTION ALGORITHM" by Ross N. Williams) on the PC (as suggested ...
hashing hash md5 crc sha1 sha256 crc-algorithms hashing-library hashing-algorithm crc-calculation crc32 crc-32 crc-16 crc-8 crc16 crc64 crc8 md5hashing md5-hash Updated Oct 9, 2023 Pascal Fabio286 / easy-crc Sponsor Star 17 Code Issues Pull requests A pure JavaScript and zero dependenc...