Using "Restaurant Management" to allow your customers scanning QR code at table to place food order. Help you are easy and quickly to manage revenue, customers volume... of your restaurants anywhere. Try https://iattendance.co
Thang Le
https://iattendance.co - Simple and easy way to manage staff or visitor attendance, inventory... https://neonplatform.com - One platform for all IoT devices.
Sunday, September 1, 2024
Sunday, May 30, 2021
Sunday, May 9, 2021
Monday, July 9, 2018
Tuesday, January 9, 2018
Spring Finite State Machine
This is a basic example about designing a Finite State Machine (FSM) using Spring Statemachine in combination with Spring MVC.
Monday, June 12, 2017
SOAP, Restful web services with CXF, Web UI with Vaadin and Spring Framework
This is a simple project to integrate CXF and Vaadin 8 to Spring Framework. Here, we reuse previous project and just to add more Vaadin into the project to support web UI.
Monday, June 5, 2017
SOAP and Restful web services with CXF and Spring Framework
This is a simple web application combination of SOAP and Restful webservices in CXF and Spring framework.
Configuration using annotations makes development a webservies application really simple and fast. It is a big change from the past when there were lot of steps need to be done to build a webservices application.
Configuration using annotations makes development a webservies application really simple and fast. It is a big change from the past when there were lot of steps need to be done to build a webservices application.
Sunday, June 4, 2017
SOAP web services standalone application with CXF framework
This is a simple Java SOAP web services application using CXF framework.
1. Setup
Download CXF run-time binary at http://cxf.apache.org/download.html and add it to your Eclipse.
1. Setup
Download CXF run-time binary at http://cxf.apache.org/download.html and add it to your Eclipse.
Friday, January 1, 2016
Create A Mixed C/C++ project for ARM with Eclipse Autotools
1. Environment setup
Assuming
that you installed and setup GCC for ARM (Linux x86). Else, reference here.
Be
sure that you installed automake, autoconf, autoreconf. Else, you need install
it.
To
install Automake: sudo apt-get install
automake
This
also will install Autoreconf and Autoconf for you.
To check version of automake: automake --version.
Tuesday, September 8, 2015
"Train" problem with Dijkstra, Depth First Search and combinatorial algorithm (Java)
The local commuter
railroad services a number of towns in Kiwiland. Because of monetary
concerns, all of the tracks are 'one-way.' That is, a route from Kaitaia
to Invercargill does not imply the existence of a route from Invercargill to
Kaitaia. In fact, even if both of these routes do happen to exist, they
are distinct and are not necessarily the same distance!
The purpose of this
problem is to help the railroad provide its customers with information about
the routes. In particular, you will compute the distance along a certain
route, the number of different routes between two towns, and the shortest route
between two towns.
Saturday, February 14, 2015
MasterMind game - Implementation in MVC design pattern (C++)
MasterMind game is designed based on idea of MVC design pattern and is implemented on C++.
Saturday, January 17, 2015
D-BUS example
D-BUS is a framework developed for IPC method (inter-process communication) in Linux. Below is a example for how to setup, implement and build an application using gdbus.
Monday, September 8, 2014
Eclipse CDT no print out message to its console in Windows 64bit
How to fix it:
My environment is Windows 8, 64bit. Eclipse for Windows 64bit.
Either you install Mingw-w64 32bit or 64bit version (http://mingw-w64.sourceforge.net). Then you might face with the problem that Eclipse doesn't print out message to its console.
Assuming that you setup your environment correctly, but it seems that Eclipse does not recognize GCC in PATH environment variable.
So, In order to fix this issue, in your project, do:
My environment is Windows 8, 64bit. Eclipse for Windows 64bit.
Either you install Mingw-w64 32bit or 64bit version (http://mingw-w64.sourceforge.net). Then you might face with the problem that Eclipse doesn't print out message to its console.
Assuming that you setup your environment correctly, but it seems that Eclipse does not recognize GCC in PATH environment variable.
So, In order to fix this issue, in your project, do:
Friday, October 25, 2013
Building Linux kernel image for ARM with Eclipse [Part 5]
G. Bring all things into target board
Building Linux kernel image for ARM with Eclipse [Part 4]
F. Board configuration
Building Linux kernel image for ARM with Eclipse [Part 3]
D. Build U-boot Boot loader Image
We will download the modified u-boot source code from Atmel. This
version is more fit with AT91SAM family than the official u-boot version. In
general, U-boot takes up for loading kernel image to RAM and setting up
operation environment for kernel as well.
Building Linux kernel image for ARM with Eclipse [Part 2]
C. Build Linux kernel Image
At first, we need to import the Linux kernel source code into the Eclipse IDE
Building Linux kernel image for ARM with Eclipse [Part 1]
I feel quite lazy to remember a lot Linux build commands while building Linux kernel image and also don't want to repeat to typing the build commands every time need to modify and rebuild the kernel image. So, I looked at a tool help to make build processes to be more user friendly. Eclipse IDE and its plug-ins are the great fit tools for this purpose.
In this article, I intend to setup needed environment for building the Linux kernel image for Atmel AT91SAM9260 SoC which is based on ARM926EJ-S core. The target board is Olimex SAM9-L9260. Host OS is Ubuntu 13.10 64-bit. There are some differences in setting up environment between Ubuntu 13.10 and previous versions.
A great thing here is all tools used in this project is free ^-^.
In this article, I intend to setup needed environment for building the Linux kernel image for Atmel AT91SAM9260 SoC which is based on ARM926EJ-S core. The target board is Olimex SAM9-L9260. Host OS is Ubuntu 13.10 64-bit. There are some differences in setting up environment between Ubuntu 13.10 and previous versions.
A great thing here is all tools used in this project is free ^-^.
Tuesday, May 1, 2012
Comparing the real time scheduling policies of the Linux kernel and an RTOS
I published this article in EE Times magazine.
http://www.embedded.com/design/operating-systems/4371651/Comparing-the-real-time-scheduling-policies-of-the-Linux-kernel-and-an-RTOS-
http://www.embedded.com/design/operating-systems/4371651/Comparing-the-real-time-scheduling-policies-of-the-Linux-kernel-and-an-RTOS-
Sunday, January 1, 2012
Some Take Notes in Programming for Windows CE/Mobile
Le Trung Thang, New Year 2012
Saturday, December 31, 2011
Telnet in Java
Le Trung Thang, end of 2011
Telnet is a network protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communications facility using a virtual terminal connection. User data is interspersed in-band with Telnet control information in an 8-bit byte oriented data connection over the Transmission Control Protocol (TCP) (soure: http://en.wikipedia.org/wiki/Telnet).
Sunday, September 4, 2011
FreeRTOS and Implementation of FAT file system FatFs on SD card
Le Trung Thang 2011
After building successful the application “Building an Application for AT91SAM7S withFreeRTOS RTOS and IAR”, in this article we will combine FatFs, a FAT file system module, with FreeRTOS to make an application with functions more diverse than.
FatFs is a generic FAT file system module for small embedded systems that can be ported to any underlying hardware. It has been architected with separate layers for hardware accesses. FatFS is compatible with Windows FAT12/16/32 file system (Figure 1).
Friday, August 19, 2011
Where the printf() Rubber Meets the Road
(from: http://hostilefork.com/2010/03/14/where-the-printf-rubber-meets-the-road/)
Sunday, July 24, 2011
Building an Application for AT91SAM7S with FreeRTOS RTOS and IAR
Le Trung Thang 2011
After ported success the FreeRTOS kernel to AT91SAM7S board, see: “Porting Real Time OS "FreeRTOS" to AT91SAM7S256 Evaluation board”. Now, we can start to create an application using FreeRTOS. The preparation tools, you can see at above article.
The first, you need download the demo project at here. Unzip downloaded file and go to folder Atmel\at91sam7s-ek\FreeRTOS-getting-started and open file FreeRTOS- this getting-started.eww to start IAR Embedded Workbench for ARM IDE.
From demo project, you can edit the project hierarchy as your requirement.
Tuesday, July 19, 2011
Porting Real Time OS "FreeRTOS" to AT91SAM7S256 Evaluation board
Le Trung Thang 2011
Preparation.
Hardware:
- Segger J-link emulator (www.segger.com).
Software:
- IAR Embedded workbench for ARM (www.iar.com).
- FreeRTOS RTOS (www.freertos.org).
To get FreeRTOS , you can either download from www.freertos.org directly or download the demo project which included FreeRTOS v7.01. Thank to Mr. Richard Barry, author of FreeRTOS.
Download demo project here.
Tuesday, April 12, 2011
Saturday, January 22, 2011
Những lời khuyên của Bill Gates
Những lời khuyên của Bill Gates
( from: http://nghoangvan137.blogspot.com/2010/03/nhung-loi-khuyen-cua-bill-gates.html )
Monday, January 17, 2011
Wednesday, January 5, 2011
Người Việt ở Mỹ là ai ?
Trống Đồng Việt Nam |
Nguồn: http://vnexpress.net/GL/The-gioi/Nguoi-Viet-5-chau/2011/01/3BA25076/?p=2#aComment
Tôi xin được nêu rõ một vài khác biệt trong số những người được gọi là Việt kiều để cho những bạn trong nước có thể hiểu một cách tương đối chính xác và có được cái nhìn đa diện về cuộc sống ở xứ người hơn.
Thursday, December 30, 2010
Top 10 algorithms of the 20th century
1. Top 10 algorithms of the 20th century - 10 Thuật Toán Quan Trọng Nhất Thế Kỉ 20
Thursday, December 16, 2010
How The Kernel Manages Your Memory
(Original post at: www.duartes.org)
Anatomy of a Program in Memory
Each process in a multi-tasking OS runs in its own memory sandbox. This sandbox is the virtual address space, which in 32-bit mode is always a 4GB block of memory addresses. These virtual addresses are mapped to physical memory by page tables, which are maintained by the operating system kernel and consulted by the processor. Each process has its own set of page tables, but there is a catch. Once virtual addresses are enabled, they apply to all software running in the machine, including the kernel itself. Thus a portion of the virtual address space must be reserved to the kernel:
Friday, November 26, 2010
ARM Assembly quick reference
( From: http://www.coranac.com/tonc/text/asm.htm#sec-intro ,
http://nocash.emubase.de/gbatek.htm#arminstructionset )
http://nocash.emubase.de/gbatek.htm#arminstructionset )
Wednesday, November 10, 2010
"synchronized" - How Java Supports Synchronization
(from: http://www.herongyang.com/Java/Synchronization-Support-in-Java-synchronized.html)
This section describes the 'synchronized' keyword and how Java supports synchronization in 3 different ways - synchronized class methods, synchronized instance methods, synchronized statement blocks.
This section describes the 'synchronized' keyword and how Java supports synchronization in 3 different ways - synchronized class methods, synchronized instance methods, synchronized statement blocks.
Monday, October 18, 2010
Improving Software Quality
(from: http://www.robelle.com/library/papers/quality/#ref )
by Robert Green
Robelle Solutions Technology Inc.
I am founder of a small software company that makes tools for the Hewlett-Packard 3000 computers. I also spent seven years working in the HP factory and three years in an end-user MIS department. I have been involved in the development of applications, operating systems, and tools, some of high quality and some of low.Wednesday, October 13, 2010
Monday, October 11, 2010
Java Delegate
( from: http://dangtritue.blogspot.com/2008/08/java-delegate.html )
Trong lập trình .NET có kiểu delegate khá thú vị, trên rất nhiều diễn dàn tôi vẫn thường được nghe hỏi về delegate trong java.
Trong lập trình .NET có kiểu delegate khá thú vị, trên rất nhiều diễn dàn tôi vẫn thường được nghe hỏi về delegate trong java.
Wednesday, October 6, 2010
Multiply Using Booth’s Algorithm
Booth's multiplication algorithm is a multiplication algorithm that multiplies two signed binary numbers in two's complement notation. The algorithm was invented by Andrew Donald Booth in 1951 while doing research on crystallography at Birkbeck College in Bloomsbury, London. Booth used desk calculators that were faster at shifting than adding and created the algorithm to increase their speed. Booth's algorithm is of interest in the study of computer architecture.
(from: http://en.wikipedia.org/wiki/Booth%27s_multiplication_algorithm)
(from: http://en.wikipedia.org/wiki/Booth%27s_multiplication_algorithm)
Saturday, September 25, 2010
Core Java Interview Questions & Answers
Core Java Interview Questions & Answers
From: http://www.knowledgebase-script.com/demo/article-911.htmlCore Java Interview Questions - Here you can find out a list of questions for core java interview along with the answers. There questions are often asked for core java job interview.
Wednesday, September 15, 2010
GWT Tutorial
This article describes how to develop a Web application with GWT and the Google Plugin for Eclipse. This article assumes basic Eclipse and Java knowledge . The article was developed using JDK 1.6, GWT 2.0 and Eclipse 3.6 (Helios)).
http://www.vogella.de/articles/GWT/article.html
http://www.vogella.de/articles/GWT/article.html
Monday, September 13, 2010
Monday, September 6, 2010
Saturday, September 4, 2010
Artificial Intelligence & Machine Learning
http://see.stanford.edu/see/lecturelist.aspx?coll=348ca38a-3a6d-4052-937d-cb017338d7b1
or all courses:
http://see.stanford.edu/see/courses.aspx
Artificial Intelligence & Machine Learning
video letter.
Instructor: Ng, Andrew
or all courses:
http://see.stanford.edu/see/courses.aspx
Artificial Intelligence & Machine Learning
video letter.
Instructor: Ng, Andrew
Thursday, September 2, 2010
Sunday, August 29, 2010
Threads and Callbacks in RMI
(from: http://www.cs.swan.ac.uk/~csneal/InternetComputing/ThreadCallBack.html)
7.1. Background
So far, all the RMI examples you have seen have been very straightforward - the client needs to invoke some service on a server, and is prepared to wait until the service has finished before proceeding. But what if the service will take some time, and the client wishes to get on with something else while it waits? Or if the activities of the server are to some degree independent of main function of the client? The first situation is often the case when dealing with GUI code - it is not considered good practice to freeze up a GUI while it performs some slow operation.Also, suppose there are multiple clients - what happens if more than one tries to access the service at the same time? We will deal with this issue first, as it is the simplest.
Tuesday, November 24, 2009
Xử lý các sự kiện Trong Java
From: http://www.vn4000.com
http://www.vn4000.com/content/view/4670/35/
Somebody posted it here: http://www.scribd.com/doc/Giới-thiệu-JAVA
Java SE Architecture, source: http://www.oracle.com/technetwork/java/javase/tech/index.html |
Thursday, November 12, 2009
Getting started IAR Embedded Workbench for ARM with AT91SAM7S256
Le Trung Thang 2011
Prepare tools:
- Hardware: AT91SAM7S EVALUATION BOARD and Jlink 7 (http://www.segger.com) debug board (see schematic at below).
Other alternation can be considered in case of you don’t have AT91SAM7S Evaluation Board could be OLIMEX SAM7-P256 Development Board (www.olimex.com).
I have not tested with Olimex board yet, but strong belive that it's able to work well with this demonstration project.
Fig 1. AT91SAM7S EVALUATION BOARD |
Fig 2. Modules in Board |
Vi Điều Khiển AVR ATmega128 - AVR microcontroller
Một số tài liệu về vi điều khiển AVR và FPGA.
(This is some documents about Atmel AVR microcontroller, FPGA chip in Vietnamese.)
(This is some documents about Atmel AVR microcontroller, FPGA chip in Vietnamese.)
Sunday, October 11, 2009
Study About ARM7TDMI processor and Keil Realview Real-Time OS
Le Trung Thong, 2012
Here is place to post the ARM7 project which is graduated thesis of Thong Le. This page will include design, source code, plans,... Thong Le will take care this page.
Copyright by https://blog.osteele.com/2008/05/my-git-workflow/ |
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