The Design of CAN Bus Communication System Based on MCP2515 and S3C2440

2014 ◽  
Vol 933 ◽  
pp. 516-520 ◽  
Author(s):  
Jin Mei Liu ◽  
Jun Hong Wang ◽  
Dong Hui Sun
Keyword(s):  
Operating System ◽  
Embedded System ◽  
Communication System ◽  
Can Bus ◽  
System Development ◽  
Embedded Linux ◽  
Embedded Processors ◽  
Hardware Interface ◽  
Interface Function ◽  
Spi Interface

CAN bus was widely used in embedded system development, but most embedded processors without CAN bus controller, need to extend external CAN bus interface through external bus. In order to send and receive the CAN bus data by S3C2440 chip, interface function of S3C2440 was extended by MCP2515 chip in the paper, which was used the SPI interface to extend CAN bus interface. The design of CAN bus hardware interface was described in the paper. The design of CAN device drive program on the embedded Linux operating system was specified in detail.

A Portable Embedded Data Acquisition and Communication System

2012 ◽  
Vol 4 (4) ◽  
pp. 1-6
Author(s):  
Ran Zhang
Keyword(s):  
Operating System ◽  
Data Acquisition ◽  
Basic Principle ◽  
Communication System ◽  
The Other ◽  
Time Data ◽  
Key Technology ◽  
Usb Interface ◽  
Hardware Interface ◽  
Embedded Microprocessor

The data acquisition equipment is very useful and popular equipment in agriculture and the other fields. This paper introduces the design of a portable data acquisition and communication system used in cropland. It collect signals of various analog and digital sensors, GPS space and time data, saving data by USB interface and transmission through WCDMA or Bluetooth. The key technology of the system is the use of embedded microprocessor (ARM), Linux Operating system and WCDMA wireless communication. This paper mainly analyzed the basic principle, hardware interface and software flow chart of this system.

Research and Implementation of Embedded Linux System Power Optimization

2013 ◽  
Vol 416-417 ◽  
pp. 1538-1541
Author(s):  
Jian Qiang Wang ◽  
Fei Yun Yuan
Keyword(s):  
Operating System ◽  
Power Consumption ◽  
Embedded System ◽  
Embedded Linux ◽  
Dynamic Voltage Scaling ◽  
Embedded Operating System ◽  
Test Results ◽  
Embedded Linux System ◽  
Dynamic Voltage ◽  
System Power

This paper firstly discusses the techniques to optimize power consumption of the embedded operating system, and then optimizes power consumption of embedded Linux by adding DVS (dynamic voltage scaling) module and modifies the scheduling function in the standard Linux kernel. Finally, take a comparison test on arm920 platform. The test results show that: the power optimized Linux can effectively reduce the power consumption of the whole embedded system.

Boot Process Analysis and Transplantation of Embedded Linux System

2014 ◽  
Vol 543-547 ◽  
pp. 3177-3180
Author(s):  
Yu Cheng Li ◽  
Zong Fu Yang
Keyword(s):  
Embedded System ◽  
Development Process ◽  
System Development ◽  
Process Analysis ◽  
Embedded Linux ◽  
Basic Function ◽  
Development Platform ◽  
Embedded Linux System ◽  
Startup Process ◽  
New Framework

Since the boot code locates in the bottom of embedded system, so the design of boot code is the key technology and the important steps of system development during the development process of embedded system. Although the boot code supporting new framework has been updating, the boot code of manufacturer giving is an old version of a few years ago in the current market popular embedded products. So this paper analyzes the U-boot code commonly used and in the popular in detail, combining with the startup process of embedded Linux system, then, this paper gives a process, transplanting the new version of U-boot code using the UT6410 as development platform. On the basis of completing the basic function transplantation, this paper adds the network card and DNW. Experiments show that the new version of transplantation can run smoothly, and improve the efficiency of the system.

Development of Network Driver Program Based on pxa270 and Embedded Linux

2012 ◽  
Vol 433-440 ◽  
pp. 4516-4519
Author(s):  
Hong Yan Kang
Keyword(s):  
Operating System ◽  
Development Process ◽  
System Development ◽  
Embedded Linux

A research about the development of network driver program based on pxa270 is done. Implementation principle and running process of network driver based on embedded Linux is introduced. Through the example of LAN91C111 driver that is done in embedded Linux operating system, development process of network driver based on Linux operating system is analyzed.

Design of Process Management for Multi-Process Micro-Kernel Embedded OS on ARM

2013 ◽  
Vol 760-762 ◽  
pp. 1670-1676
Author(s):  
Bo Qu
Keyword(s):  
Operating System ◽  
Embedded System ◽  
Process Management ◽  
System Development ◽  
Priority Queue ◽  
System Level ◽  
Memory Space ◽  
Embedded Os ◽  
Process Memory ◽  
Technical Details

This paper describes the design and implementation of process management for ARM based multi-process micro-kernel embedded operating system in technical details, including allocation of process memory space with MMU, creation of system level tasks, generation of the init process, the process management task, switching of the tasks and processes, and multi-level priority-queue schedule. The paper finally gives a demo example to show the performance of the process management. The entire operating system is implemented on Linux with GNU tool chain by the author of this paper, which is programmed simple and compact therefore suitable for both embedded system development and embedded related curriculum teaching in colleges and universities.

Design of WSN Nodes Drivers Based on Embedded Linux

2013 ◽  
Vol 416-417 ◽  
pp. 1005-1009
Author(s):  
Jin Wu Ju ◽  
Xiang Gao
Keyword(s):  
Operating System ◽  
Embedded Linux ◽  
Wireless Sensor ◽  
Network Node ◽  
Hardware Interface

WSN node is a key equipment to build wireless sensor networks.In this paper the network node framework of the wireless sensor based on the CC1101 is introduced. The hardware interface and characteristics of CC1101 are analysed.The process of achieving its driver in the embedded Linux operating system is addressed in detail, which includes chip initialization, interrupt processing, and interface with the upper layer protocols and so on.

Pengembangan Sistem VOIP Menggunakan Server Issabel Versi 4.0 dan Tunnel EOIP pada OMNI Hospital Alam Sutera

2018 ◽  
Vol 18 (1) ◽  
pp. 13-20
Author(s):  
Elly Mufida ◽  
David Wardana Agus Rahayu
Keyword(s):  
Operating System ◽  
Open Source ◽  
End Of Life ◽  
Communication System ◽  
Communication Protocol ◽  
The Internet ◽  
Migration Process ◽  
Web Browser ◽  
Backup Path ◽  
E Mail

The VoIP communication system at OMNI Hospital Alam Sutera uses the Elastix 2.5 server with the Centos 5.11 operating system. Elastix 2.5 by the developer has been declared End of Life. The server security system is a serious concern considering that VoIP servers can be accessed from the internet. Iptables and fail2ban applications are applications that are used to limit and counteract those who try to attack the VoIP server. One application that can be used as an open source VoIP server is the Issabel Application version 4.0. The migration process from Elastix 2.5 application to Issabel 4.0 by backing up all configurations in the Elastix 2.5 application through a web browser including the configuration of endpoints, fax, e-mail, asterisk. After the backup file is downloaded then upload the backup file to the Issabel 4.0 application then run the migration process. Adding a backup path as a failover connection is needed because the VoIP communication protocol between the OMNI Hospitals Group still uses one path so that when there is a problem in the connection path, the communication protocol will stop. The tunnel EoIP is a protocol used as a backup path between the OMNI Hospitals Group site.

The Research Based on CDN Technology in Communication System Server Design

2014 ◽  
Vol 998-999 ◽  
pp. 1282-1285
Author(s):  
Jing Tian ◽  
Xiao Guo Liu
Keyword(s):  
Operating System ◽  
Communication System ◽  
Instant Messaging ◽  
Distributed Database ◽  
Communication Server ◽  
Server Design

This paper designed and developed a series of Windows operating system for basic platform CDN technology, combined with the Socket of TCP/IP technology and to the network distributed database for the center. From design to achieve several aspects of instant messaging system of communication server are expounded.

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