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[Other resource] Crc

Description: Crc原理pdf清晰版 CRC 校验源码分析
Platform: | Size: 20370 | Author: wusb | Hits:

[Embeded-SCM Develop] modbus功能码调试工具

Description: 用modbus协议工具的调试。主要对功能码和CRC校验
Platform: | Size: 228701 | Author: fczfr@163.com | Hits:

[Com Port] spi7sled

Description: 使用lpc21xx系列实现SPI实验，74HC595驱动7段数码管。-use lpc21xx series of experimental realization of SPI, Bit-seven of the digital control.
Platform: | Size: 2048 | Author: 张昕 | Hits:

[Data structs] Projectjohu123006

Description: crc任意位生成多项式 任意位运算 自适应算法 循环冗余校验码(CRC，Cyclic Redundancy Code)是采用多项式的 编码方式，这种方法把要发送的数据看成是一个多项式的系数 ，数据为bn-1bn-2…b1b0 (其中为0或1)，则其对应的多项式为： bn-1Xn-1+bn-2Xn-2+…+b１X+b０ 例如：数据“10010101”可以写为多项式 X７+X４+X２+1。 循环冗余校验CRC 循环冗余校验方法的原理如下： (1) 设要发送的数据对应的多项式为P(x)。 (2) 发送方和接收方约定一个生成多项式G(x)，设该生成多项式 的最高次幂为r。 (3) 在数据块的末尾添加r个0，则其相对应的多项式为M(x)=XrP(x) 。(左移r位) (4) 用M(x)除以G(x)，获得商Q(x)和余式R(x)，则 M(x)=Q(x) ×G(x)+R(x)。 (5) 令T(x)=M(x)+R(x)，采用模2运算，T(x)所对应的数据是在原数 据块的末尾加上余式所对应的数据得到的。 (6) 发送T(x)所对应的数据。 (7) 设接收端接收到的数据对应的多项式为T’(x)，将T’(x)除以G(x) ，若余式为0，则认为没有错误，否则认为有错。-crc-generating polynomial arbitrary Operators adaptive algorithm Cyclic Redundancy Check (CRC. Cyclic Redundancy Code) is the polynomial coder, This way the data to be sent as a polynomial coefficient data bn- 1bn-2 ... b1b0 (0 or 1), corresponding to the polynomial : bn- 1Xn-1 bn- 2Xn-2 ... b1X belts such as : data "10010101" polynomial can be written as a X7 X4 X2. Cyclic Redundancy Check Cyclic Redundancy Check method of principle as follows : (1) The data to be sent to the corresponding polynomial p (x). (2) the sender and the receiver agreed on a generator polynomial G (x), set up the generator polynomial of the highest power of r. (3) In the data block Add to the end of r-0, then the polynomial corresponding to M (x) = XrP (x). (R-bits) (4) M (x) divided by G (
Platform: | Size: 459776 | Author: johu | Hits:

[Program doc] 0302041

Description: 摘要 关键词 引言 第一章 开发网页广播服务系统的问题 1．1网页广播服务系统的简介 1．2网页广播服务系统功能需求 1．3开发工具简介 第二章 网页广播服务系统的分析和设计 2．1网页广播服务系统的总体设计 2．2网页广播服务系统的具体设计 2．3网页广播服务系统的接口设计 第三章 网页广播服务系统的具体实现 3．1遍历文件模块设计说明 3．２CRC校验程序设计说明 3．３组织文件和文件索引表模块设计说明 3．４组织文件FAT表模块设计说明 3．５打包模块设计说明 3．６发送模块设计说明 3．7程序接口设计说明 第四章 结束语 致谢 参考文献 附录 -Summary Introduction Chapter development of the first web broadcasting services system of broadcasting services 1.1 website system SR- 1.2 website Broadcasting System Functional Requirements 1.3 Development Tools on the second chapter website broadcasting services and systems analysis 2.1 Design website Broadcasting Service System Design 2.2 broadcasting service website design system wide web 2.3 Sowing Service System Interface Design Chapter III Broadcasting System website is a concrete realization of 3.1 Traversal module design documents note 3 .2 CRC program design shows 3.3 files and document indexing table module design document shows 3.4 organizations F AT Table 3.5 shows the design module packaging module design shows this module 3.6 3.7 Note Program Interface Design Note concludin
Platform: | Size: 566272 | Author: | Hits:

[assembly language] crc2345

Description: crc任意位生成多项式 任意位运算 自适应算法 循环冗余校验码(CRC，Cyclic Redundancy Code)是采用多项式的 编码方式，这种方法把要发送的数据看成是一个多项式的系数 ，数据为bn-1bn-2…b1b0 (其中为0或1)，则其对应的多项式为： bn-1Xn-1+bn-2Xn-2+…+b１X+b０ 例如：数据“10010101”可以写为多项式 X７+X４+X２+1。 循环冗余校验CRC 循环冗余校验方法的原理如下： (1) 设要发送的数据对应的多项式为P(x)。 (2) 发送方和接收方约定一个生成多项式G(x)，设该生成多项式 的最高次幂为r。 (3) 在数据块的末尾添加r个0，则其相对应的多项式为M(x)=XrP(x) 。(左移r位) (4) 用M(x)除以G(x)，获得商Q(x)和余式R(x)，则 M(x)=Q(x) ×G(x)+R(x)。 (5) 令T(x)=M(x)+R(x)，采用模2运算，T(x)所对应的数据是在原数 据块的末尾加上余式所对应的数据得到的。 (6) 发送T(x)所对应的数据。 (7) 设接收端接收到的数据对应的多项式为T’(x)，将T’(x)除以G(x) ，若余式为0，则认为没有错误，否则认为有错-crc-generating polynomial arbitrary arbitrary Operators adaptive algorithm Cyclic Redundancy Check (CRC. Cyclic Redundancy Code) is the polynomial coder, This way the data to be sent as a polynomial coefficient data bn- 1bn-2 ... b1b0 (0 or 1), corresponding to the polynomial : bn- 1Xn-1 bn- 2Xn-2 ... b1X belts such as : data "10010101" polynomial can be written as a X7 X4 X2. Cyclic Redundancy Check Cyclic Redundancy Check method of principle as follows : (1) The data to be sent to the corresponding polynomial p (x). (2) the sender and the receiver agreed on a generator polynomial G (x), set up the generator polynomial of the highest power of r. (3) In the data block Add to the end of r-0, then the polynomial corresponding to M (x) = XrP (x). (R-bits) (4) M (x) divided by G (
Platform: | Size: 1024 | Author: yzs | Hits:

[Post-TeleCom sofeware systems] crc_decode

Description: WCDMA Release-7系统的CRC译码-WCDMA Release-7 system of CRC decoding
Platform: | Size: 1024 | Author: 刘磊 | Hits:

[Other] Crc

Description: Crc原理pdf清晰版 CRC 校验源码分析-Pdf version of the principle of clear CRC CRC checksum source code analysis
Platform: | Size: 20480 | Author: wusb | Hits:

[Documents] NewMsg-RF1100

Description: (1) 315、433、868、915Mh的ISM 和SRD频段 (2) 最高工作速率500kbps，支持2-FSK、GFSK和MSK调制方式 (3) 高灵敏度（1.2kbps下-110dDm，1％数据包误码率） (4) 内置硬件CRC 检错和点对多点通信地址控制 (5) 较低的电流消耗（RX中，15.6mA，2.4kbps,433MHz） (6) 可编程控制的输出功率，对所有的支持频率可达+10dBm (7) 支持低功率电磁波激活功能 (8) 支持传输前自动清理信道访问（CCA），即载波侦听系统 (9) 快速频率变动合成器带来的合适的频率跳跃系统 (10) 模块可软件设地址，软件编程非常方便 (11) 标准DIP间距接口，便于嵌入式应用 (12) 单独的64字节RX和TX数据FIFO-(1) 315,433,868,915 Mh of the ISM and SRD frequency bands (2) maximum rate of 500kbps, support for 2-FSK, GFSK and MSK modulation (3) high sensitivity (1.2kbps under-110dDm, 1 packet error bit-rate) (4) built-in hardware CRC error detection and control of point-to-multipoint communication address (5) a lower current consumption (RX in, 15.6mA, 2.4kbps, 433MHz) (6) programmable control of output power for all the support frequencies up to+ 10dBm (7) to support low-power electromagnetic wave activation (8) to support the transmission before the automatic clean-up Channel Access (CCA), namely Carrier Sense System (9) Fast frequency synthesizer brought about by changes in suitable frequency hopping system (10) modules can be software-based address, software programming is easy (11) standard DIP spacing interfaces for embedded applications (12) separate 64-byte RX and TX data FIFO
Platform: | Size: 319488 | Author: 李华力 | Hits:

[Crack Hack] CRC

Description: 通过对于模2除法的研究 可以得到如下方法： 1． 把信息码后面加上p－1位的0，这个试验中p是6位，即在输入的信息码后面加上“00000”。把这个17位的被除数放入input中。 2． 在得到被除数input之后，设计一个在被除数上移动的数据滑块变量d，把input中的最高位开始逐次复制给变量d。 3． 如果d的最高位为1，由变量d和变量p做异或运算；如果d的最高位为0则不运算或者做多余的异或‘0’的运算。 4． 把滑块变量d往后滑动一位。 5． 循环步骤（3，4）11次。 6． 执行步骤3。 7． 得到余数c，把c转成信号输出。 -Through the 2-mode research division will be as follows: 1. Information code followed by the p-1-bit 0, this test p is 6, that is, the information in the input code after 00000. This 17 Add input in the dividend. 2. After receiving input dividend, dividend on the design of a mobile data slider variable d, the highest input in the beginning of successive copied to the variable d. 3. If the highest d for 1, by the variable d and variable p do XOR operations if d the highest computing to 0 or do not redundant XOR 0 arithmetic. 4. The slider sliding variable d next one. 5. Cycle of steps (3,4) 11. 6. Steps 3.7. Be more than a few c, the c into the output signal.
Platform: | Size: 6144 | Author: lijq | Hits:

[Communication] CRC_VBA

Description: crc function of excel
Platform: | Size: 9216 | Author: zhangping | Hits:

[Com Port] CRC

Description: labview 7.1版本的CRC 校验-labview 7.1 version CRC CHeckSum
Platform: | Size: 8192 | Author: he liming | Hits:

[assembly language] crc

Description: modbus CRC校验的一些说明 作为菜鸟收集的 希望能有所帮助-modbus CRC check as a rookie to collect some of that hope can be helped
Platform: | Size: 23552 | Author: Richard | Hits:

[SCM] nRF24l01_tx_rx

Description: nRF24l01 NRF系列模块的数据收发控制 1） 2.4GHZ全球开放ISM频段免许可使用 2） 最高工作速率2Mbps,GFSK高效调制 3） 125个频道满足多点通讯和跳频通讯需求 4） 1.9-3.6V工作，低功耗，待机模式仅1uA. 5） 双通道数据接收，内置环行天线，体积仅17*34mm,通信距离在100m之内，软件编简单。 7） 内置硬件8/16位CRC校验，收发中断标志，每次可发28字节 -nRF24l01 NRF series data transceivers control module 1) 2.4GHZ global open license-free ISM band 2) maximum rate of 2Mbps, GFSK modulation and efficient 3) 125 channels to meet the multi-point communication and frequency hopping communications needs 4) 1.9-3.6V work , low power, standby mode only 1uA. 5) dual-channel data reception, built-ring antenna, the size of only 17* 34mm, communication distance of 100m, software made simple. 7) built-in hardware 8/16-bit CRC check, send and receive interrupt signs can be made for each 28-byte
Platform: | Size: 3072 | Author: james | Hits:

[Crack Hack] pycrc-0.7.1

Description: python crc生成程序支持 各种CRC算法 以及查表法等-CRC coding generator
Platform: | Size: 51200 | Author: Patrick | Hits:

[Other] CRC

Description: CRC7，CRC8，CRC9，CRC16编解码，查表方法实现-CRC7, CRC8, CRC9, CRC16 codec, look-up table method
Platform: | Size: 108544 | Author: liuhui | Hits:

[Algorithm] crc

Description: 自动完成CRC校验码的计算 1 010110001101 110011 可以得到: (1)index:5 pointing:1 101011 110011 011000 (2)index:6 pointing:0 110000 110011 000011 (3)index:7 pointing:0 000110 0 000110 (4)index:8 pointing:0 001100 0 001100 (5)index:9 pointing:1 011001 0 011001 (6)index:10 pointing:1 110011 110011 000000 (7)index:11 pointing:0 000000 0 000000 (8)index:12 pointing:1 000001 0 000001 -CRC check code automatically derive the 1-1,010,110,001,101,110,011 can be: (1) index: 5 pointing: 1 101011 110011 011000 (2) index: 6 pointing: 0 110000 110011 000011 (3) index: 7 pointing: 0 000110 0 000110 (4) index: 8 pointing: 0 001100 0 001100 (5) index: 9 pointing: 1 011001 0 011001 (6) index: 10 pointing: 1 110011 110011 000000 (7) index: 11 pointing: 0 000000 0 000000 (8 ) index: 12 pointing: 1 000001 0 000001
Platform: | Size: 1024 | Author: 夏治文 | Hits:

[Crack Hack] CRC

Description: CRC校验xilinx器件生成CRC校验verilog文件-CRC perl
Platform: | Size: 5120 | Author: icsong | Hits:

[Crack Hack] CRC-Calculator.V1.0

Description: 可以计算 CRC1,CRC5,CRC7,CRC8,CRC10,CRC12:,CRC16,CRC32,CRC64的CRC计算器-CRC Calculator.V1.0
Platform: | Size: 30720 | Author: beyondme37 | Hits:

[VHDL-FPGA-Verilog] CRC

Description: CRC32:polynomial: (0 1 2 4 5 7 8 10 11 12 16 22 23 26 32) * data width: 8 CRC16:polynomial: (0 1 2 4 5 7 8 10 11 12 16 22 23 26 32) * data width: 8
Platform: | Size: 2048 | Author: FYSG | Hits:
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