[嵌入式Linux] BK3633，蓝牙5
BK3633 芯片是高度集成的无线片上系统，支持蓝牙 5.2 双模和专有 2.4 GHz 协议。 它集成了高性能射频收发器、基带、低功耗处理器、功能丰富的外设单元、可编程协议和配置文件，以支持广泛的应用。 闪存程序存储器使其适用于定制应用。 BK3633采用先进的工艺工艺设计，集成开关DCDC稳压器，具有超低功耗和超低漏电功率。 内嵌高阶干扰抑制滤波器和快速自动增益控制逻辑，使其在高干扰环境下也能 (2022-08-23, LINUX, 1283KB, 下载0次)
http://www.pudn.com/Download/item/id/1661217060953991.html[文章/文档] Bash基本语法
BASH 是每个 Linux 发行版都带有的一个标 准基础软件，学会在 BASH 下编制一些小程序就可以让你对 Linux 系统的 管理应付自如； BASH 非常简单，如果不深究 BASH 语法中的细节的话，你 可以用 1 个小时就学会他，应该说 BASH 比 HTML 要更容易学；最后即使你不 打算用 BASH 编程，但是 Linux 系统中的许多配置文件和脚本都是 BASH 的语 法，不懂一点 BASH 的知识就不能很好的理解和使用 Linux 。其实最简单的 BASH 就和 DOS 下的批处理文件类似，只要把要执行的命令一行一行写出来就行,此文档为Bash的基本用法
BASH is a standard basic software for every Linux distribution. Learning to compile some small programs under BASH will allow you to handle the Linux system. BASH is very simple. If you don't delve into the details in BASH syntax, You can learn it in 1 hour. It should be said that BASH is easier to learn than HTML. Finally, even if you don't plan to use BASH programming, many configuration files and scripts in Linux system are BASH syntax, do not understand BASH. Knowledge does not understand and use Linux well. In fact, the simplest BASH is similar to the batch file under DOS. Just write the command to be executed line by line. This document is the basic usage of Bash. (2018-07-21, LINUX, 484KB, 下载0次)
[Linux/Unix编程] libevent
Libevent 是一个用C语言编写的、轻量级的开源高性能事件通知库，主要有以下几个亮点：事件驱动（ event-driven），高性能;轻量级，专注于网络，不如 ACE 那么臃肿庞大；源代码相当精炼、易读；跨平台，支持 Windows、 Linux、 *BSD 和 Mac Os；支持多种 I/O 多路复用技术， epoll、 poll、 dev/poll、 select 和 kqueue 等；支持 I/O，定时器和信号等事件；注册事件优先级。
Libevent is an open source of high performance events in a language with C, lightweight circular base, mainly has the following highlights: event driven (event-driven), lightweight, high performance; focus on the network, as well as ACE so bloated; source code, very refined and legible; cross platform, support Windows, Linux, *BSD and Mac Os; support multiple I/O multiplexing technology, epoll, poll, dev/poll, select and kqueue; I/O, timer and signal events; registration priority. (2018-03-22, LINUX, 1171KB, 下载2次)
[文章/文档] Go in Action-Manning (2015).pdf
Go in Action 是关于 GO 语言编程的基础入门书。Go语言结合了底层系统语言的能力以及现代语言的高级特性，旨在降低构建简单、可靠、高效软件的门槛。本书向读者提供一个专注、全面且符合语言习惯的视角。Go语言实战同时关注语言的规范和实现，涉及的内容包括语法、类型系统、并发、管道、测试，以及其他一些主题。
Go in Action is a basic introductory book on GO language programming. The Go language combines the ability of the underlying system language and the advanced features of modern languages to reduce the threshold for building simple, reliable, and efficient software. This book provides the reader with a focused, comprehensive and linguistic perspective. Go language focuses on the specification and implementation of language, including grammar, type system, concurrent, pipeline, testing and other topics. (2017-12-28, LINUX, 5276KB, 下载4次)
[Linux/Unix编程] LINUX_Shell编程基础教程
1)在Linux编辑中命令区分大小写字符。
2）在Shell语句中加入必要的注释，以便以后查询和维护，注释以#开头。
3）对Shell变量进行数字运算时，使用乘法符号“*”时，要用转义字符“\”进行转义。
4）由于Shell对命令中多余的空格不进行任何处理，因此程序员可以利用这一特性调整程序缩进，达到增强程序可读性效果。
5）在对函数命名时最好能使用有含义且能容易理解的名字，即使函数名能够比较准确地表达函数所完成的任务。同时建议对于较大的程序要建立函数名和变量命名对照表。
1) the command is ordered to distinguish case and case character in the Linux editor.
2) add the necessary comments in the Shell statement, so as to facilitate the inquiry and maintenance, comments to # beginning.
3) when the Shell variable is numeric, use the multiplicative symbol "*" to use the escape character "\" to escape.
4) because Shell does not handle any redundant spaces in commands, programmers can use this feature to adjust program indentation to enhance program readability.
5) in the name of a function, it is best to use a name that is meaningful and easy to understand, even if the function name can express the tasks completed by the function more accurately. It is also suggested that a function name and a variable name control table should be established for a larger program. (2017-12-08, LINUX, 27KB, 下载1次)
[其他] yasm-1.3.0.tar
Yasm是对NASM-2.13.01汇编程序的完全重写 。它支持x86和AMD64指令集，接受NASM和GAS汇编语法并输出二进制，ELF32和ELF64对象格式。
这个软件包被称为使用LFS-8.1平台来构建和正常工作。
Yasm is a complete rewrite of the NASM-2.13.01 assembler. It supports the x86 and AMD64 instruction sets, accepts NASM and GAS assembler syntaxes and outputs binary, ELF32 and ELF64 object formats.
This package is known to build and work properly using an LFS-8.1 platform. (2017-11-15, LINUX, 1457KB, 下载13次)
[其他] epoll
在linux的网络编程中，很长的时间都在使用select来做事件触发。在linux新的内核中，有了一种替换它的机制，就是epoll。
相比于select，epoll最大的好处在于它不会随着监听fd数目的增长而降低效率。因为在内核中的select实现中，它是采用轮询来处理的，轮询的fd数目越多，自然耗时越多
In Linux network programming, long time used in the select to do event trigger. In the new Linux kernel, there is a kind of mechanism of replacing it, is the epoll.
Compared to select, epoll biggest advantage is that it will not be reduced as the number of monitored fd increase efficiency. Because in the implementation of the select kernel, it is to use the polling to deal with it, the number of fd polling, the more natural the more time-consuming (2017-10-10, LINUX, 1KB, 下载1次)
[Linux/Unix编程] CellPhoneUXDemo-0.2-Win32
在目前手机领域，用户体验才是产品的核心因素。该程序为基于Linux、miniGUI开发的手机应用界面，属开源代码。可为编程者提供一种熟悉嵌入式图像用户界面开发的途径。
The success of iPhone benefits from its excellent user experience. After a detailed analysis of user experience of iPhone, we can clearly see that user experience does not need shocking innovation. Can a product be competitive in fierce market competition, survive and grew only when it does well and uniquely in each detail. It is increasingly being recognized that user experience is one of the most important factors to any products, especially for consumer electronic products. (2017-09-26, LINUX, 16320KB, 下载1次)
[通讯编程] JDY-30+SPP蓝牙模块手册.doc
jdy -30蓝牙开发手册，蓝牙通讯模块开发
bluetooth develop manual (2017-09-08, LINUX, 295KB, 下载18次)
[MTK] mtk__7681_Developers_Guide_v1_2
mtk7681平台 用户编程手册介绍。联发科mt7681是一个紧凑的Wi-Fi片上系统（SoC）和嵌入式TCP/IP协议栈物联网设备。通过添加mt7681到物联网设备可以连接其他智能设备或云应用程序和服务
The MediaTek MT7681 is a compact Wi-Fi System-on-Chip (SoC) with embedded TCP/IP stack for IoT devices. By adding the MT7681 to an IoT device it can connect to other smart devices or tocloud applications and services (2017-08-24, LINUX, 1944KB, 下载5次)
[其他] 新建 WinRAR ZIP 压缩文件
一级文件系统程序 实现一个一级文件系统程序：根据前面的提示设计一个一级（单用户）文件系统程序，要求实现以下功能： ①提供文件创建/删除接口命令create/delete、目录创建/删除接口命令mkdir/rmdir、显示目录内容命令ls； ②创建的文件不要求格式和内容。
A program file system to achieve a level of file system program: according to the previous design a level (single user) file system procedures, requirements to achieve the following functions: 1. Provide file create / delete interface, create / delete directory create/delete command interface command mkdir/rmdir, display directory contents command files created by LS; 2 does not require the format and content of. (2017-06-21, LINUX, 4KB, 下载1次)
[数值算法/人工智能] www-igm_univ-mlv_~lecroq_string
重磅送出，一个网站的字符串匹配算法讲解，以及算法实现的演示。希望在字符串匹配算法这方面有研究的。看了这里面的东西，保证你不再去找别的东西去看了。经典中的经典。这是把一个网站的一个链接目录完全下载，是收藏的精品
hit send, a website to explain the string matching algorithm, the algorithm of the demonstration. In this string matching algorithms are studied. Read this and the things that you are no longer guaranteed to find something else to see it. The classic classic. This site is a directory of links to a full download, is a collection of products (2004-12-18, LINUX, 920KB, 下载110次)
[Linux/Unix编程] qextserialport.tar
qt 一个封装好的串口类 qextserialport
qt a good package Serial category qextserialport (2004-12-06, LINUX, 49KB, 下载336次)
[Linux/Unix编程] tcp_database_analysis_yanghui_0[1][1].1.tar
在Linux系统环境下，运用GTK+2.0编程工具和C开发语言，实现了对一个局域网内的主机IP地址的扫描、端口扫描和在建立连接通信下TCP状态转移的分析 注:压缩文件并没用GZ压缩,一个归档文件,去掉后缀.gz即可
in Linux environment, the use of GTK 2.0 programming tools and the C development language, the right one to achieve the mainframe LAN IP address scanning, port scanning and the establishment of communication links TCP state transition analysis Note : do not use compressed files GZ compression, a document archiving and remove the suffix. gz can (2004-11-14, LINUX, 2480KB, 下载46次)
[Linux/Unix编程] proc示例程序
oracle pro*c编程示例，里面有执行动态SQL，建立多个数据连接链，执行PL/SQL语句块的示例代码，并且都封装成函数接口。
c programming examples, and they perform dynamic SQL, and the establishment of multiple data link, the implementation of PL/SQL block of code examples, and are packaged as function interface. (2004-10-19, LINUX, 3KB, 下载237次)