I. INTRODUCTION of CRCFirst here is what is CRC: Cyclic redundancy Code Check English name is cyclical redundancy check, referred to as CRC, it is the use of division and the remainder of the principle of false detection (error detecting). In
Look at the CRC for two days, the online data can be broadly divided into two categories, or a large number of mathematical formulas, and finally only tell you to use the first shift the corresponding bit, and then use short division to find the
Because I encountered many problems when designing the CRC module, I did not find an article with practical guidance on the Internet. After several simulation modifications and simulation, I got the correct result, therefore, we are willing to
Http://www.repairfaq.org/filipg/LINK/F_crc_v31.html
Contents:
[Sub-toc] for this document | main [Table 'o contents]
1. Preface
1.1) about the author & Copyright
1.2) Abstract
2. Introduction: Error Detection
3. The need for complexity
4.
When uboot start, dispaly following info:
U-boot 1.1.6 (Mar 19 2008-14:02:12)
So Google and find,
Means nothing wrong, but need some environment variables for uboot when booting.
, And "The message will go away as soon as you save the envrionment
Cyclic redundancy code Check English name is cyclical redundancy check, referred to as CRC. It uses the principle of division and remainder to make false detection (error detecting). In practical application, the transmitting device calculates the
Problem:In the development of embedded system, Modbus protocol is a widely used protocol in industrial control system. This is used to simulate the Modbus protocol simply by generating a data frame that conforms to the protocol and parsing the
24-port full-Gigabit Switch error frame Filtering test QoS test master knowledge of the following 24-port full-Gigabit Switch knowledge, such as broadcast forwarding and latency test. You can easily select your preferred method to implement 24 full
Windows 7 Ultimate with Service Pack 1 (x64)-DVD (chinese-simplified)File name Cn_windows_7_ultimate_with_sp1_x64_dvd_u_677408.isoRelease date (UTC): 5/12/2011 2:46:19 pm Last Updated (UTC): 5/12/2011 2:46:19 pmSha1:2ce0b2db34d76ed3f697ce148cb7594432
Abstract: This article describes the use of Xmomdem File Transfer Protocol programming, the design for the flash memory embedded system with the PC on the Super terminal software between the file transfer function, in the PC without the installation
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