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2015年3月28日 星期六

【CHICHI ETUTOR@ARM】Introduction to EMbedded LINUX SYSTEM


1. What is "Embedded System"
    
      “Embedded System" is any computer system or computing device that performs a dedicated function or is designed for use with a specific embedded software application.
Embedded systems may use a ROM-based operating system. But an embedded system is not usable as a commercially viable substitute for general purpose computers or devices


2.What is embedded "linux" system
      Embedded Linux is the use of a Linux operating system in embedded computer systems such as mobile phones, personal digital assistants, media players, set-top boxes , networking equipment, machine control, industrial automation, navigation equipment and medical instruments


3. Embedded System Design Flow



4. Software/Hardware Architecture in embedded linux system



5. Embedded Processors
    ARM:
            *computer (RISC) instruction set architecture (ISA)
            *ARM7,ARM9,Xscale,ARM11,Cortex
            *allwinner,S3C6410, OMAP3530, Tegra3, S5PV210,  Snapdragon,Marvell ARMADA XP,

    MIPS:
                     *computer (RISC) instruction set architecture (ISA)
             *Broadcom MIPS XLP208/XLP204


6.Embedded System Software
   Bootloader
     hardware initialization
     Loading a OS/Kernel
        e.g : uboot
Operating System
      Open Source OS
         e.g. : linux kernel,uClinux

Root file system
    contains the application programs, system  libraries , and utilities that make up a  system
         e.g. : Root file system in stroage                           JFFS2,YAFFS
         e.g. : Root file system in stroage                             RAMDISK
        e.g : Root file system in mounted through Network
                  NFS
 
7. Embedded Linux Components

   Kernel
    Manages tasks (Scheduler)
    Memory management
Drivers
   Manage hardware resources
Root File System
Libraries
    *C Library
    *Run-time Library
Applications(including GUI)
   *Shell : Command Line Interface
    *GUI : KDE,GNOME
Scripts
User data/Application/Utility





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2015年3月25日 星期三

[琪琪雜貨舖] 及鑄造 30cm 平底 上等鍋 _ 開箱



附的專用刷子



本體出現

以上給大家參考看看囉

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2015年3月22日 星期日

【CHICHI ETUTOR@ARM】SAMSUNG S5PV210 INTRODUCTION - PART2 - Evaluation BOard "QT210"


1. QT210 appearance

 

2. QT210 devices 

3. QT210 devices
      Cortex-A8  S5PV210 1GHz
      1GByte DDR Ram
      256MB NAND Flash
      LCD 5”Standard HDMI,CVBS  TV output
      1 mini USB-OTG
      4 USB-HOST
      Stereo/Micro phone, Speaker jack
      10/100 M Ethernet
      G sensor
      14x8 matrix keypad
      2 Micro SD card slot
      RS232 x2
      JTAG x1
      CMOS Camera


4. QT210 schematic CORE/Buttom 
      Download File Here

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2015年3月16日 星期一

【CHICHI ETUTOR@SERVER】some BOOKs for fundamentals of DATAcenter works - CISCO -CCNA 


1. Cisco Data Centre Fundamentals





2. Cisco Top-Down Network Design





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2015年3月15日 星期日

【CHICHI ETUTOR@ARM】Some Recommended TXETBOOKs for LEARNing LINUX embedded SYSTEM


To whom may interested in learning embedded linux system, these books will introduce you to world. The basic knowledge you might learned from these books covered HW to SW. and most exciting is all these books you can download by only google them.

*Building Embedded Linux Systems 
ISBN:978-0-596-52968  




*Embedded Linux Primer a practical, real-world approach


Programming Embedded Systems
ISBN  0-596-00983-6


Designing Embedded Hardware
  ISBN   0-596-00755-8

Beginning Linux Programming
ISBN: 978-0-470-14762-7

Programming with GNU Software
   ISBN:978-1-56592-112-2

Linux Device Drivers, Third Edition
  ISBN:978-0-596-00590-0

 
To discuss all these books or any suggestion to us. Welcome and looking forward to it. 


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2015年3月2日 星期一



【ChiCHI eTutor@ARM】 samsung s5pv210 introduction - part1



(CHICHI eTutor still under test and construction. 
If any problem/question, welcome to discuss/exchange info. by leaving message)
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  • Samsung S5PV210 Architecture


  • Samsung S5PV210 Reference Board (RFB)/ Evaluation Board (EVB)



  • Samsung S5PV210 RFB/EVB Block Diagram




























  • S5PV210 core features 
CPU Structure (complexity): RISC
Width of Machine Word: 32 bit
Primary (RAM) Data bus: 32 bit
CPU Core: Cortex-A8 
Supported Instruction Set(s): ARMv7-A
32/ 32 KB I/D Cache, 512 KB L2 Cache 
speed from 800 MHz to 1 GHz (or more)
require operation in less than 300mW
Thumb-2 technology for greater performance, energy efficiency, and code density
NEON signal processing extensions
Jazelle RCT Java-acceleration technology
TrustZone technology
13-stage main integer pipeline
SRAM/ ROM/ NOR Interface (x8 or x16 data bus)
OneNAND Interface (x16 data bus)
NAND Interface (x8 data bus)
LPDDR1 Interface (266~400 Mbps/ pin DDR)
DDR2 Interface (400 Mbps/ pin DDR)
LPDDR2 interface(400 Mbps/ pin DDR)
Camera Interface
Multi-Format video Codec
-ITU-T H.264, ITU-T H.263, MPEG-4 and DivX, VC1
 up to 1080p@30fps
JPEG Codec
-up to 80 Mpixels/s
3D Graphic Engine (SGX540)
-up to 20M triangles/s and 1000 Mpixels/s
2D Graphic Engine
-up to 160Mpixels/s
Analog TV interface
-NTSC-M/ NTSC-J/ NTSC4.43/ PAL-B, D, G, H, I/ PAL-M/ PAL-N/ PAL-Nc/ PAL-60
Digital TV Interface
-High-definition Multimedia Interface (HDMI) 1.3
support for NTSC and PAL mode with image enhancer
Video processor
TFT-LCD Interface 
Audio processing is progressed by Reconfigurable Processor (RP)
Low power audio subsystem
64 KB secure boot ROM for secure boot
128 KB secure RAM for security function
Hardware Crypto Accelerator
   -DES/ TDES, AES, SHA-1, PRNG and PKA
Secure JTAG
   -Authentication of JTAG user
Real Time Clock
PLL
Keypad (14x8 key matrix)
Timer with Pulse Width Modulation
System timer (accurate tick time in power down mode)
DMA ((8 channels for Memory-to-memory DMA, 16 channels for Peripheral DMA)
A/D Converter and Touch Screen Interface (10-channel 12-bit)
Watch Dog Timer
Vectored Interrupt Controller
Power Management
PCM Audio Interface
AC97 Audio Interface
One S/PDIF Interface (TX only)
I2S Bus Interface (Three 24-bit I2S interface support)
Modem Interface
Three I2C Bus Interface
ATA Controller (ATA/ ATAPI-6)
Four UART
USB 2.0 OTG (480 Mbps)
USB Host 2.0
Four SD/HS-MMC/ SDIO Interface
Two SPI Interface
GPIO


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我們在露天(PCHOME RUTEN),雅虎(YAHOO),
都有賣場。 "安心""迅速""合理""服務" 
為我們開業的信念,請放心購買!!


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