Digi 9P 9360/9750 Uživatelská příručka

LxNETES™ User’s GuideConnectCore 9P 9360/9750

Overview10 LxNETES User’s GuideLinux kernel sourcesThe LxNETES package contains the complete source code of the Linux kernel. This allows you t

 11IntroductionFeaturesWhat’s new in LxNETES 3.2?Linux Kernel Linux Kernel 2.6.12.5 Added touch screen driver for the ConnectCore 9P family

Features12 LxNETES User’s Guide Drivers for the following module components and interfaces:– SDRAM memory– Flash memory–Ethernet–USB Host–Seri

 13Introduction Autoconf driven build process All building can be done without root access  This LxNETES version can coexist with older inst

Features14 LxNETES User’s GuideAcronyms and abbreviations# This is a target session# And this is what you must input (in bold)CGI Common Gatewa

 15RequirementsRequirementsCHAPTER 2System Requirements/PrerequisitesSystem requirementsYour development system should be a reasonably fast x86

System Requirements/Prerequisites16 LxNETES User’s Guide DOS or DOS-emulator (such as dosemu)Optional but recommended components: Qt3 develop

 17RequirementsApplications & ServicesTo use this software, your system has to be configured to build a standard Linux 2.6. If you can buil

System Requirements/Prerequisites18 LxNETES User’s GuideNFS serverUse the network file system (NFS) to simplify application debugging on the ta

 19RequirementsAfter modifying the exports file, the NFS server has to be restarted with the following command:JTAG-BoosterThe JTAG-Booster sof

System Requirements/Prerequisites20 LxNETES User’s Guide

 21Getting StartedGetting StartedCHAPTER 3IntroductionThis chapter describes how to configure and test your host PC and development board (targ

Introduction22 LxNETES User’s GuideTo use a terminal client as non-root user, either you need read/write access to/dev/ttyS<n> or the cli

 23Getting StartedFigure 3-2: Seyon SettingsStep 4: Connect powerConnect the included power supply to the development board. After power-on, th

Introduction24 LxNETES User’s GuideAfter Linux started successfully, you can enter commands such as "ls", "cd", or "ca

 25Getting StartedThe target network parameters can be changed in U-Boot using the "setenv" command. You can see the IP address of th

Guided Installation26 LxNETES User’s GuideGuided InstallationAfter mounting the CD you are ready to run the installer. Use the following comman

 27Getting StartedManual InstallationInstead of using the installation script you can do the installation manually. Just copy the directory &qu

Manual Installation28 LxNETES User’s Guide

 29Building the First ProjectBuilding the First ProjectCHAPTER 4Building the Default ProjectUntil now you have worked with the pre-loaded, defa

 Digi International Inc. 2005. All Rights Reserved.The Digi logo is a registered trademarks of Digi International, Inc. All other trademarks mentione

Building the Default Project30 LxNETES User’s Guide ConnectCore 9P 9750: cc9p9750devPlease check if the script used the correct platform and d

 31Application DevelopmentApplication DevelopmentCHAPTER 5Writing applicationsThe user applications are stored in subdirectory apps/ of the pro

Writing applications32 LxNETES User’s GuideUsing C++A sample C++ application “hello_world” is included in “apps/misc/src/hello_world”.You can u

 33Application DevelopmentTable 6-3: /proc/cpuinfo contents

Debugging applications34 LxNETES User’s GuideDebugging applicationsThe purpose of a debugger is to allow you to see what is going on his own pr

 35Application DevelopmentIn the debug interface typeThe supported architectures can be displayed with the following command:Choose the right a

Debugging applications36 LxNETES User’s GuideIncluded pre-built applicationsThe sources for the included applications can be found in the softw

 37Application DevelopmentNano-X/microwindowsNano-X makes it possible to write applications using the framebuffer with an API similar to Xlib.

Useful applications38 LxNETES User’s GuideUseful applicationsmemWith this application you can read and write the contents of the SDRAM. All the

 39Kernel DevelopmentKernel DevelopmentCHAPTER 6Writing kernel modulesWhat is a kernel module?Modules are pieces of code that can be loaded and

Writing kernel modules40 LxNETES User’s Guide Add the module to the build environmentYou have to edit "my_kmodule/Makefile.in" so tha

 41Advanced TopicsAdvanced TopicsCHAPTER 7Modifying the default projectThe following information is the default kernel configuration for LxNETE

Modifying the default project42 LxNETES User’s GuideOnce you have configured the kernel to your system needs, save the configuration and exit.

 43Advanced TopicsBuilding a custom projectTo create a custom project, that is a project for your custom hardware, first configure the default

Boot process44 LxNETES User’s GuideBoot processThis chapter describes the boot process of U-Boot and Linux.IntroductionA boot loader is a small

 45Advanced TopicsConnectCore 9P 9360/9750On the ConnectCore 9P 9360 and ConnectCore 9P 9750 modules, the SPI boot loader is loaded from the SP

Linux boot methods46 LxNETES User’s GuideLinux boot methodsLinux is booted by U-Boot in one of the following ways: TFTP/NFS Flash memory USB

 47Advanced TopicsNOR FlashUse the following commands if you have NOR Flash (similar to booting from NAND).USBIt is possible to load a kernel i

Linux boot process48 LxNETES User’s GuideUpdate the kenel from the USB stick to the memory and write it to flash memory.Linux boot processThe c

 49Advanced TopicsUncompressing Linux... done, booting the kernel.Linux ver

 5••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••ContentsChapter 1 Introduction...

Linux boot process50 LxNETES User’s GuideIf a wrong command line parameter for "console=" is used, nothing will be displayed after &q

 51Advanced TopicsUpdating a running system (the easy way)On a running system, that is a system able to start the boot loader, U-Boot contains

Linux boot process52 LxNETES User’s GuideStep 1: Download the new image file to RAMThe first step is to download the image into RAM. Specify th

 53Advanced TopicsFor modules with NOR flash, use this command: ConnectCore 9P 9360/9750The following commands are to update the U-Boot loader,

Updating a corrupted system using a debugger54 LxNETES User’s GuideUpdating a corrupted system using a debuggerConnectCore 9P 9360/9750If the F

 55Root File System TypesRoot File System TypesCHAPTER 8The following describes the different possibilities which can be used as root file syst

56  LxNETES User’s GuideThis script does three steps (that you can also do manually):Step 1: Set bootargs to be passed to the kernelThe environ

 57Root File System TypesJFFS2JFFS is a log-structured journaling flash file system which was designed to be used on Flash devices in embedded

58  LxNETES User’s GuideThe message above is printed if the file system was not cleanly unmounted. The system should not be powered off before

 59Root File System TypesYou should use a separate data partition for your data which is frequently updated so your rootfs does not get corrupt

6 LxNETES User’s GuideManual Installation ...27Cha

60  LxNETES User’s Guide

 61Interfaces & DevicesInterfaces & DevicesCHAPTER 9The following interfaces and devices are supported in the current LxNETES version:R

62 LxNETES User’s GuideUSB host interfaceA USB host driver is included and enabled in the default kernel configuration. To operate multiple USB

 63Interfaces & DevicesCompact flash interfaceCC9P6360/9750A driver for the internal Compact Flash (CF) card interface is included and enab

64 LxNETES User’s GuideThe next step is to store this information into the RTC. Use the application hwclock:Now you can reset or power off your

 65••••••••••••••••••••••••••••••••••••••••••••••••••••••••Appendix ARelated documentationCD contentsThe CD contains all the necessary software

Related documentation66 LxNETES User’s GuideThere following folders are on the CD:Readme.txtBriefly describes LxNETES and lists the CD contents

 67ConnectCore 9P 9360 (CC9P9360)ConnectCore 9P 9750 (CC9P9750)hardwareThis folder contains hardware specific content. The JTAG Booster softwar

Memory layouts68 LxNETES User’s GuideupstreamLxNETES is based on various open source projects. The original source code from these projects is

 69ConnectCore 9P 9360 / ConnectCore 9P 9750RAM Start AddressRAM End AddressDescription Used by0x00000000 0x00080000 U-Boot stackU-Boot0x000800

 7Introduction...44U-Boot ...

Memory layouts70 LxNETES User’s Guide

 71••••••••••••••••••••••••••••••••••••••••••••••••••••••••Appendix BU-Boot command referenceThis chapter gives an overview of common used U-Bo

U-Boot command reference72 LxNETES User’s Guide# help# ? - alias for 'help'# autoscr - run script from memory# base - print

 73Each of these commands has additional help available, which can be viewed by entering help <command>.The following table explains some

U-Boot command reference74 LxNETES User’s GuideNote that not all U-Boot commands are supported by every platform. The following table shows whi

 75The command “run” allows to execute variables as sequence od commands.Here values of other variables could be used to simplify the scripts.

8 LxNETES User’s GuideLCD interface .......62Touch s

 9IntroductionIntroductionCHAPTER 1OverviewThe LxNETES package enables you to easily develop software under Linux 2.6 for Digi International an