4+menlow+board+development+environment+setup slides

8/6/2019 4+Menlow+Board+Development+Environment+Setup Slides

1/40

Menlow board developmentenvironment setup

MOBLIN.ORG

Copyright 2009 Intel Corporation.

Pan, [email protected]

Intel
mailto:[email protected]:[email protected]


2/40

py g p

Agenda

Moblin IntroductionInstall Moblin

Moblin development environment setup

ExamplesQT Introduction

Resources


3/40

Moblin Introduction


4/40

What is Moblin

Moblin is a Linux-based platform for building operating

systems and applications for mobile devices.Linux based, any languages, frameworks and tools of Linux canbe used

Web browser based app

Moblin is designed for:Small form factor of the screen

Fast boot, small memory usage, fast response for application

Low power consumption.


5/40

Moblin Core


6/40

Moblin Core App services

Network management

WiFi, WiMax, BluetoothGraphics

X, OpenGL, OpenGL-ES, 2D render, Font render

Other services:bickley for managing multimedia metadatamojito for working with social web services

bognor-regis for managing multimedia play queues


7/40

Moblin Core UI services

GTK

QTClutter

Clutter is an open source software library for creating fast,visually rich, portable and animated graphical user interfaces.

Based on OpenGL/OpenGL-ESnbtk

An extension of Clutter which provides useful widgets (e.g.buttons, panels, labels) for GUI application developers


8/40

Install Moblin


9/40

Install Moblin Live Image

Live Image

Can be burned onto a CD or written to a USB disk.Direct boot from CD/USB disk

Test before installation


10/40

Write image to a USB drive

Linux

unmount USB disk firstImage writer (python script)

$ chmod a+x ./image-writer$ ./image-writer

Using dd (dangerous)$ dd bs=4096 if= of=

WindowsWin32DiskImager


11/40

Moblin Development Environment Setup


12/40

Moblin development environment

Development environment

A Linux development machine where you'll be doing yourcoding, compilation, and packaging.

We recommend using a standard Linux machine for this.

Deployment environment (Target platform)

A machine running Moblin you'll deploy your project to thismachine for testing and debugging.


13/40

Moblin development environment

Using Moblin toolchain

Traditional embedded development method, using cross-compiling toolchain for the development.

binutils, gcc, gdb, head files and libraries

Using Chroot

This extract Moblin image and chroot onto it as a sandboxVery popular in embedded linux development, ex. scratchbox.

Very effective way to develop for Moblin, you are using nativecompiler like gcc, not cross-complier like i586-moblin-linux-gcc.


14/40

Installing Linux development tools

You should have the following development tools installed:

gcc, g++, make, autoconf, libtoolize, gtkdocize, gettext, man,devhelp, and

On Ubuntu:$ sudo apt-get install build-essential man-db automake intltoollibtool gtk-doc-tools devhelp libglib2.0-dev

On Fedora:$ sudo yum install gcc-c++ make man automake intltool libtoolgtk-doc devhelp glib2-devel


15/40

Develop using Moblin toolchain

Download Moblin SDK at:

http://moblin.org/projects/moblin-sdk-tools-and-toolchainUnpack the toolchain

$ cd ~; tar jvxf moblin-sdk-0.10.tar.bz2

Configure the toolchainEdit envsetup.sh located in the root of the SDK and set the valueof $MOBLIN_TOOLCHAIN to the directory containing thetoolchain:

export MOBLIN_TOOLCHAIN=~/moblin-sdk-0.10/moblin-cross-toolchain

After editing the envsetup.sh, run it one time:$ ./envsetup.sh
http://moblin.org/projects/moblin-sdk-tools-and-toolchainhttp://moblin.org/projects/moblin-sdk-tools-and-toolchainhttp://moblin.org/projects/moblin-sdk-tools-and-toolchainhttp://moblin.org/projects/moblin-sdk-tools-and-toolchainhttp://moblin.org/projects/moblin-sdk-tools-and-toolchainhttp://moblin.org/projects/moblin-sdk-tools-and-toolchainhttp://moblin.org/projects/moblin-sdk-tools-and-toolchainhttp://moblin.org/projects/moblin-sdk-tools-and-toolchainhttp://moblin.org/projects/moblin-sdk-tools-and-toolchainhttp://moblin.org/projects/moblin-sdk-tools-and-toolchain


16/40

Develop using Chroot

Using Chroot for development if:

you are familiar with vim, emacs, gdb and Linux command line.you don't need your application to interact with the Moblindesktop. Your application will run stand-alone in a window onthe desktop

This extract Moblin image and chroot onto it as a sandbox

Very popular in embedded linux development, like usingscratchbox.

Very effective way to develop for Moblin, you are using nativecompiler like gcc, not cross-complier like i586-moblin-linux-

gcc.


17/40

Develop using Chroot setup

Install Moblin Image Creator 2 which contains moblin-chrootCan:

Get install package for following distributions (Ubuntu8.10,Fedora8, Fedora9, OpenSuse11.1)

http://repo.moblin.org/moblin/tools/

Install from source code:

http://moblin.org/documentation/moblin-image-creator-2/installationgit clone git://git.moblin.org/moblin-image-creator-2cd moblin-image-creator-2sudo ./tools/moblin-check-alldeps

make clean; makesudo make install
http://repo.moblin.org/moblin/tools/http://moblin.org/documentation/moblin-image-creator-2/installationhttp://moblin.org/documentation/moblin-image-creator-2/installationhttp://moblin.org/documentation/moblin-image-creator-2/installationhttp://moblin.org/documentation/moblin-image-creator-2/installationhttp://moblin.org/documentation/moblin-image-creator-2/installationhttp://moblin.org/documentation/moblin-image-creator-2/installationhttp://moblin.org/documentation/moblin-image-creator-2/installationhttp://moblin.org/documentation/moblin-image-creator-2/installationhttp://moblin.org/documentation/moblin-image-creator-2/installationhttp://repo.moblin.org/moblin/tools/


18/40

Create chroot from the Moblin 2.1 image

Extracts Moblin 2.1 file system to a subdirectory on yourdevelopment machine

After chroot to this file system, you are working as the same asworking inside the Moblin 2.1 environment, allows you to build andrun your application as on a Moblin 2.1 device.

For the first time:

$ sudo moblin-chroot -s $ sudo moblin-chroot -s /opt/mobln2.1 /home/user/Downloads/moblin-2.1-Menlow_SDK_20100222.iso

After first time:$ sudo moblin-chroot

To exit chroot terminal, type "exit"


19/40

Develop using Chroot map directory

Open another terminal window, there are 2 terminal now

From chroot

From desktop

(From desktop) Map desktop dbus to the chroot dbus

$ sudo mount --bind

Example:

$ sudo mount --bind /var/lib/dbus/ /opt/moblin2.1/var/lib/dbus/ (From chroot) Create a "src" directory for your applications source

$ mkdir /root/src

(From desktop) Mount your source directory to the chroot

$ sudo mount --bind Example:

$ sudo mount --bind /home/bob/src/ /opt/moblin2.1/root/src


20/40

Develop using Chroot build and run

(From desktop) Do all code editing and source control managementEmacs, Vim

$ git clone ... or $ svn checkout ...

(From desktop) Allow applications started in the chroot terminal to displayoutput on the desktop

$ xhost +SI:localuser:root

(From chroot) Build and runThe first time may be need to install missing libraries or devel packages

"yum search ..." and "yum install ..."

Build

$ gcc helloworld.c -o helloworld

Run

$ ./helloworld


21/40

Examples


22/40

Hello world example

main.c

#include

int main(int argc, char* argv[]){

printf (Hello world! \ n);

return 0;}


23/40

Using moblin-cross-toolchain

Set environment to Moblin SDK

Run the envsetup.sh under the directory where you installedMoblin SDK, example:

$~/moblin-sdk-0.10/envsetup.sh

Compile use the following command

$i586-moblin-linux-gcc -o main main.c

Copy the binary to board and run


24/40

Using chroot

Chroot into the extracted image directory

For the first time:$moblin-chroot -s

After first time:moblin-chroot

compile use the following command:$gcc -o main main.c

Direct run under chroot environment or copy to board to run


25/40

Linux Driver Example

Install kernel develop package first:

$rpm -ivh kernel-ivi-devel-2.6.31.6-36.1.moblin2.i586.rpmAfter installed, kernel heads is located at:

/usr/src/kernels/2.6.31.6-36.1.moblin2-ivi/


26/40

Linux Driver Example code

hello.c :

#include < linux/module.h>#include < linux/config.h>#include < linux/init.h>

MODULE_LICENSE("GPL");static int hello_init(void)

{printk(KERN_ALERT "Hello, world\n");return 0;

}static void hello_exit(void){

printk(KERN_ALERT "Goodbye, cruel world\n");}module_init(hello_init);module_exit(hello_exit);


27/40

Linux Driver Example Makefile

#bj-m is a list of what kernel modules to build. The .o and other# objects will be automatically built from the corresponding .c file -# no need to list the source files explicitly.obj-m := hello.o

# KDIR is the location of the kernel source. The current standard is# to link to the associated source tree from the directory containing# the compiled modules.KDIR := /lib/modules/2.6.31.6-36.1.moblin2-ivi/buildEXTRA_CFLAGS = $(KDIR)

# PWD is the current working directory and the location of our module# source files.PWD := $(shell pwd)

# default is the default make target. The rule here says to run make# with a working directory of the directory containing the kernel# source and compile only the modules in the PWD (local) directory.default:

$(MAKE) -C $(KDIR) M=$(PWD) modules


28/40

Compile and test

Compile driver

$makeCopy to board and install modules

$insmod hello.ko

Output by dmesg:

Hello, worldUninstall modules:

$rmmod hello.ko

Output by dmesg:

Goodbye, cruel world


29/40

QT Introduction


30/40

QT History

Developed by Trolltech, acquired by Nokia now

Developed for KDEQT vs. GTK

History1994: Trolltech formed, QT is begin from 1991

1996: KDE started dev

1998: QT1.4, KDE1.0

1999: QT2.0, KDE1.1.2

2000: QT2.2.1, QT Embedded

2001: QT3.0

2005: QT4.02008.6: Trolltech acquired by Nokia

2009.12: QT4.6


31/40

What s QT

Everything you need to create web-enabled desktop, mobileand embedded applications.

Qt is a cross-platform application and UI framework. Using Qt,you can write web-enabled applications once and deploythem across desktop, mobile and embedded operatingsystems without rewriting the source code.

Linux/X11Windows

Mac OS X

Embedded Linux

WinCE/Windows MobileSymbian

Maemo


32/40

Features of QT

Intuitive C++ class library

Portability across desktop and embedded operating systemsIntegrated development tools with cross-platform IDE

Qt creator

Qt designer

Plug-in for EclipsePlug-in for Visual Studio

High runtime performance and small footprint on embedded

Good documents, lots of tutorial/sample codes


33/40

Architecture


34/40

Signal/Slot

Signals and slots are usedfor communication betweenobjects. The signals and slotsmechanism is a centralfeature of Qt and probablythe part that differs most

from the features providedby other frameworks.


35/40

d h ll ld


36/40

Hands on: QT hello world

Write hello.cpp

Open Qt terminalqmake -project

qmake

make

Run the programQtdemo

#include

int main(int argc, char *argv[]){

QApplication app(argc, argv);QLabel label("Hello, world!");label.show();return app.exec();

}


37/40

Resources

http://moblin.org/ http://qt.nokia.com/developer

http://qt.nokia.com/doc/4.6/index.html

MOBLIN ORG
http://moblin.org/http://qt.nokia.com/developerhttp://qt.nokia.com/doc/4.6/index.htmlhttp://moblin.org/http://qt.nokia.com/doc/4.6/index.htmlhttp://moblin.org/http://qt.nokia.com/developerhttp://moblin.org/http://moblin.org/


38/40

What Technical Resources AreAvailable To You?

MOBLIN.ORG

MOBLIN ORG


39/40

MOBLIN.ORGWERE WAITING FOR YOU

MOBLIN.ORG

L l Di l i


40/40

Legal Disclaimer

Intel, Atom and the Intel logo are trademarks of Intel Corporation in theUnited States and other countries.

*Other names and brands may be claimed as the property of others.

Copyright 2010 Intel Corporation.

4+menlow+board+development+environment+setup slides

Documents