pfsense embedded

2013-03-24 Today, my friend came to me for a tq2440 (S3C2440) day embedded. By the way, I learned about this development board, For more information about board resources, see tq2440 development user manual. I used to develop ok6410 development board. I don't fully understand nor/NAND false. 6410 supports SD card startup. First install U-boot for nor false. Use the JTAG interface to start from nor, go to the serial port tool interface and download the

reading ability allows you to roam freely in the ocean of technical knowledge of single-chip microcomputer.Making PCB board is relatively simple. As long as you understand the use of Protel software or Altimdesigner software is no problem. But want to do the board layout beautiful, wiring reasonable still have to pay a kung fu.Skilled microcontroller C language programming, will use Protel software or altimdesigner Software design PCB board and have a certain degree of English reading ability,

Interrupts are an important part of embedded systems, which leads to a lot of compiler developers providing an extension-letting standard C support break. The representative fact is that a new keyword __interrupt has been produced. The following code uses the __interrupt keyword to define an interrupt service subroutine (ISR), please comment on this code. __interrupt Double Compute_area (double radius){ Double area = PI * radius * RADIUS;printf ("ar

Package Com.doctor.embeddedjetty;import Java.util.concurrent.timeunit;import Org.eclipse.jetty.server.Server; Import Org.eclipse.jetty.servlet.servletcontexthandler;import Org.eclipse.jetty.servlet.servletholder;import Org.springframework.web.context.contextloaderlistener;import Org.springframework.web.context.support.annotationconfigwebapplicationcontext;import org.springframework.web.servlet.dispatcherservlet;/** * Standard spring configuration (Java config)

Zhongguancun library building held the road of embedded development, embedded system Linux kernel research expert Wang Hong Hui to -- Linux general technology-Linux programming and kernel information, below is the details to read. The time is, January 1, April 11, with a five-layer multi-function hall. The theme lecture entitled "Jump to science and technology life-taking a different path to

PHP Embedded function Usage instance, PHP embedded instance The examples in this article describe the usage of PHP inline functions. Share to everyone for your reference. The specific analysis is as follows: In PHP, you can embed a function inside a function, and the call scope is limited to the function itself. Displaying even numbers "); function Displayeven () { $ctr =0; Echo (""); f

Learning MongoDB 5: MongoDB query (array, embedded documentation) (2), mongodb embedded1. Introduction We introduced db in the previous article. collection. find () can be used to query conditions and specify fields returned by using the projection operator to omit this parameter to return all fields in the matching document. Today we have introduced query operations for arrays and embedded documents, espec

This time due to the server architecture, it is necessary to study the deployment of PHP programs on Java-based jetty (Wordpress,discuz)In the online search for a lot of information, are used httpd or Nginx current segment of the Web Server,jetty server in the background. The embedded jetty (embedded jetty), which I used before, is not suitable for this solution.Later search again, found that jetty original

Embedded and C language, Embedded C Language Volatile Volatile English words mean unstable and capricious. in C language, the volatile keyword is used to declare a variable. That is to say, this variable will undergo unexpected changes and needs to be read again every time this value is used. precisely speaking, the optimizer needs to re-read this value every time when using this variable, rather than using

Yesterday, I strolled around the Book City and accidentally found a very interesting book: Embedded Signal Processing Based on Embedded signal structure. First, it attracted attention because the processor involved was the DSP of the Blackfin series, which was rare. But I bought this book mainly because it tells a way to use DSP in LabVIEW environment, which has never been used before. It took one night to

Recently began to learn embedded Linux development, for embedded I was completely novice, but I still want to write something, to the later people to make a reference, so that some people less take detours. 1. Install the basic development environment under the host Linux: $ sudo apt-get install build-essential $ sudo apt-get Install Bison flex $ sudo apt-get install Manpages-dev 2. Install the cross-

QT /embedded 2.3.10 (or higher, but always a 2.3 version) QT 2.3.2 for X11 (for emulated desktop) development E 1.13 (or higher) Tmake version 1.13 or higher; (makefile file for generating qt/embedded application engineering)Qt/embedded 3.3.4 (qt/embedded installation package)Qt 3.3.4 for X11; (Qt's X11 version of t

Say 0 basis a bit exaggerated, after all, is also a computer professional, how much to understand a little microcontroller, understand a bit of Linux, is a 0.1 basis to start it. From C51 to arm, more difficult than expected, for several days, slow progress, embedded Linux-based development, so this time not under Windows, but choose to build a development environment directly in the Linux environment. Online information is really not much, their sid

H5 embedded video bug and summary, h5 embedded video bug During a recent h5 activity, many problems were discovered due to video embedding. During the test, problems were found in different versions of different systems, environments, and more or less, I am also overwhelmed, but fortunately the problem is solved and I have learned many things. To facilitate future reference, let's take a look. Now I have an

Embedded flash player on web page (2), embedded flash Next, in the previous blog, we will introduce the embedding of another flash player. This is a Flash Player used within the company. It supports many formats and supports swf video playback. Below is the page embedding code: Note: This is only the embedded code of the page. He also needs some resource files.

Profile: This section is mainly recorded in the tiny 6410 Development Board written in the bare Metal program key interrupt control LED light. 8 user-defined keys are configured in the Tiny6410, and KEY1 is used to control the LED1~LED4. The key and led circuits are as follows: K1 corresponds to the external interrupt Eint0,led1~led4 configuration method as described in the article Embedded bootloader Development Six (Tiny 6410), no longer making sta

As an extension, you need to understand the usage of DotNetZip. See:C #. NET uses a third-party class library DotNetZip to decompress/compress the Zip file You also need to understand the basic method of the embedded resource source file of a single file. For details, refer:WPF calls embedded non-. net EXE resource files Author: yijian If you have a large number of files or want to package them into resourc

1. Preparations First, install the GCC tool chain and the development environment. You can check the previous steps. You have to compile the kernel. Generally, the Development Board has the kernel. Now I do not know how to configure the kernel. You can only compile the kernel according to the default settings of the Development Board. uboot needs to be compiled before compilation, it is recommended that new users like me learn to write drivers first and learn Kernel configuration pruning slowly.

Style specifications for Embedded C Programming I. OverviewThis document describes the programming style that should be paid attention to in C language programming in embedded development,Programs compiled by different personnel have similar styles, laying the foundation for convenient maintenance of programs.Target personnel: All developers involved in C programming. Ii. file organization and structure1.1

Embedded iOS: callback function (C) and block (OC) callback comparison, embedded training After learning the OC block, it is awkward to write the C callback function. Compare the difference and record it. C callback function: CallBack. h 1) define the number and type of parameters for a callback function. typedef void (*CallBack)(int data_i32); 2) declare an external function pointer. extern CallBack myCa