2)# Perform the binary divisionforiinrange(len(data)):if(remainder>>(len(data)-1))&1:remainder^=int(generator,2)<<(poly_degree+i)returnbin(remainder)[2:].zfill(poly_degree)data='1101'generator='1011'poly_degree=len(generator)-1crc_code=crc_remainder(data,generator,poly_degree)print...
我们可以对上面的代码进行测试,以验证结果的正确性。 # 验证CRC码defcrc_verify(data,crc_code,polynomial):# 将数据和CRC码拼接combined_data=data+crc_code# 计算CRCcalculated_crc=crc_calculate(combined_data,polynomial)returncalculated_crc=='0'*(len(polynomial)-1)# 示例测试data="1101011011"polynomial="...
这里我们选择Python语言来实现CRC算法。Python具有简洁易读的语法,适合用来演示算法原理。 4. 编写并测试CRC计算函数 下面是一个使用Python实现的CRC计算函数,该函数实现了CRC-8算法: python def crc8(data, polynomial): crc = 0x00 # 初始化CRC值为0 for byte in data: crc ^= byte #将CRC值与当前字节进行...
[code] python def crc32(data): crc = 0xFFFFFFFF poly = 0x4C11DB7 for bytein data: crc ^= byte << 24 for i in range(8): if crc & 0x80000000: crc = (crc << 1) ^ poly else: crc <<= 1 crc &= 0xFFFFFFFF return crc ^ 0xFFFFFFFF [/code] 在这个例子中,我们首先定义了一...
python代码实现 def one_byte_crc(data, crc_data):"""处理⼀个字节的crc校验环节 :param data:待处理的数据 :param crc_data:crc寄存器值，最初始的为0xffff :return:"""# 把第⼀个8位⼆进制数据(通信信息帧的第⼀个字节)与16位的CRC寄存器的低8位相异或,把结果放于CRC寄存器。crc_data_tmp1 =...
Code: CRC校验二种方法: 1使用第三方库函数crcmod,但是不够完善,缺少输入输入数据反转处理。 2使用计算法,利用CalCRC16和CheckCRC函数校验输入的byte。先calcuation 后check。 -- __all__= ["CalCRC16","CheckCRC"]#===importcrcmod#===defCalCRC16(data, length):print(data, length) crc=0xFFFFiflengt...
python实现 代码语言:javascript 代码运行次数:0 运行 AI代码解释 #-*-coding:utf-8-*-# 算法:CRC-16/CCITT-FALSEdefcrc16(msg):CRC16_LookupHigh=[0x00,0x10,0x20,0x30,0x40,0x50,0x60,0x70,0x81,0x91,0xA1,0xB1,0xC1,0xD1,0xE1,0xF1]CRC16_LookupLow=[0x00,0x21,0x42,0x63,0x84,0xA5...
<pre name="code"class="python"><span style="font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);">参考网址http://blog.163.com/du_minchao@126/blog/static/107495394201075114028606/</span> 上边参考网址内的计算方法亲自算一遍就知道CRC怎么使用了(就是上边的图片),搜...
Copy-paste the below code-block into a python script or console. You can usethe web-based python console of the Pyodide projectfor simple experiments. Pick a CRC algorithm from the catalogue and pass itswidth,poly,init,refin,refoutandxoroutparameters to thespecialized_crc()function to create ...
Pycrc is a free Cyclic Redundancy Check (CRC) C source code generator written in Python.The CRC algorithm can be chosen from a fast but space-consuming implementation to slower but smaller versions especially suitable for embedded applications. The CRC parameters can be freely chosen and some ...