SDK 5 hands-on" From CCS development environment up to Linux tips and tricks”

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This morning session

• Put you hands on!

IS IS NOT

• Demo AM335x using Beaglebone • Linux training

• Configuring development environment

for AM335x• Device Driver detail

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for AM335x• Device Driver detail

• Building your first AM335x program • Android or WinCE

• Exploring Linux SW beside SDK5 • AM335x product training

AM335x software solutions

• Complete Linux software development kit

• Based on Linux kernel 3.1

• Integrated support for WL1271 WiFi/BT

• Includes easy to navigate launcher GUI based on QT/HTML5.0

• Gingerbread based SDK

• Graphics accel for optimal performance

• arowboat.orgcommunity

• RowboPERFbenchmarking application

AndroidStarter

Ware

• Windows Embedded

Compact 7 SDK

• Full support for ARM

v7 instructions

provide greater

Cortex-A8

performance

• 3D graphics SDK

integrated

• OS free programming tool

• Easily migrate from MCU code compatibility with Stellarisware

• Peripheral and graphics libraries

• USB and networking stacks

• Broad support for numerous RTOS including QNX and Integrity

• Mentor Graphics, Ittiam, VisualONsolutions for both graphics and video

• Commercial Linux, Android, WinCE customization options

Linux WinCERTOS

3P

WAREStarter

QT/HTML5.0

• Graphics and video demos, benchmarks, real-time comparisons

• Pre-integrated ARM video Codecs

• Integrated Flash Support

• Example

applications

• Code examples

• Small memory footprint

• Optimized for low latency

options

• Solutions for PRU development and system optimization

Available for free via www.ti.com

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Selecting Linux as OS

• You’re set on Linux based Kernel, what is the next move ?

• Build Everything yourself

– You know and control everything what’s inside

– Can be long and painful– Can be long and painful

– Everything/every little bits need to be recompiled

• Use a pre-made Distribution

– You know what’s inside

– Better time-to-market

– Package management

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• TI changed internal development to GIT (mainstream, mainline Linux) in early 2008

• Selling points:

– TI is setting the standard for the EP industry

– Customer Board ports

TI & linux as key selling point

– Customer Board ports easier

– Not the usual suspects on this list…

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What Is a ‘Linux Distribution’A ‘Linux distribution’ is a combination of the components requiredto provide a working Linux environment for a particular platform:

1. Linux kernel port

� BSP,LSP, PSP = Linux kernel port to a platform, not just a set of device drivers

2. Bootloader

� Eg : U-boot is the standard bootloader for ARM Linux

3. Linux ‘file system’3. Linux ‘file system’

� This does NOT mean a specific type of file system like FAT file system or flash file system … rather, it is more like the “C:\” drive in Windows

� It refers to all the ‘user mode’ software that an application needs such as graphics libraries, network applications, C run-time library (glibc, uclibc),

4. Development tools

� Code Sourcery - GCC, GDB

� CCSv5, GHS Multi, etc.

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Linux Distributions

Windowing System

OfficeSuite

Browser

• Linux distributions supporting TI ARM MPU Community boards : Angstrom, Ubuntu, Fedora, Android,

Gentoo, ARMedslack and ALIP or Arago

• WindRiver, MontaVista ,Timesys provide commercial (i.e. production) distribution for TI’s ARM MPUs

Kernel

System

• Linux distributions supporting TI ARM MPU Community boards : Angstrom, Ubuntu, Fedora, Android,

Gentoo, ARMedslack and ALIP or Arago

• WindRiver, MontaVista ,Timesys provide commercial (i.e. production) distribution for TI’s ARM MPUs

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ARM-MPU Linux SDK Contents

» Linux Kernel, Bootloaders & Filesystem

» Revamped Documentation» New Quick Start Guide & SW Developer’s Guide

» Matrix Application Launchers» GUI & TUI based on Qt/WebKit & Ncurses» Touchscreen, Mouse & Keyboard support, Web

Browser

» Example Applications» ARM Benchmarks, WLAN/Bluetooth, 2D/3D graphics,

Power, USB, Browser, Multimedia, CryptographyPower, USB, Browser, Multimedia, Cryptography

» SDK Installer» Easy installation of all target and host software

components & documentation

» CCSv5 (Eclipse IDE)» Linux aware - Compile, build, debug» Preconfigured projects for all Example Applications

» Host Tools» Pin Mux Utility

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SDK Goal : Be able to Develop

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• Typical Connectivity– Target vs Host

– TFTP & NFS

• Virtual Machine– VirtualBox or VMWare

– Shared Folders or Samba

– USB SD card reader

SDK Development Environment

– USB SD card reader

• Ubuntu 10.04 LTS

• GCC compiled within Arago

• SDK Installer

• Code Composer Studio v5

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Setup Script

1. <prompt$> sudo ./setup.sh

2. Install Ubuntu host packages

3. Untar Target Filesystem

4. Setup Network Filesystem

5. Setup TFTP Root Dir

6. Setup Minicom

7. Configure Uboot

8. Load Uboot Settings

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Next SDK Goal : OOBE

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Matrix GUI Application Launcher

• HTML5 based user interface

• Exercise peripherals and see

immediate benchmark and

performance results

• Easily add your own stuff and

exercise it using CCSv5

• Starts up on EVM power up• Starts up on EVM power up

• Output to

• LCD / external monitor

• or remote display via network

connection

• Launch applications and navigate

with touch screen or mouse

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ARM Microprocessor Benchmarks• End users can run benchmarks on their target platform under their own conditions

• Details of architecture and compiler performance

• The ARM Benchmarks are small benchmarks targeting specific performance concerns– Dhrystone: Raw CPU speed, generally targeted for control processor activities– Whetstone: Double precision floating point– Linpack: Single precision floating point, it could also be re-built for double precision floating point

analysis

• All the above benchmarks fit entirely into L1 cache, so once loaded into cache, they are really measuring raw CPU speed.

• None of the benchmarks utilize NEON.– In order to use NEON, the benchmarks would have to be re-written.– Generally these well known benchmarks are intended to run as-is.

CPU ClockSpeed Dhrystone Whetstone Linpack

300 MHz 1.9 DMIPS/MHz 172.4 MWIPS 10719 Kflops

600 MHz 1.9 DMIPS/MHz 357.1 MWIPS 21437 Kflops

800 MHz 1.9 DMIPS/MHz 454.5 MWIPS 28353 Kflops

1 GHz 1.9 DMIPS/MHz 555.6 MWIPS 36622 Kflops

Source: http://www.netlib.org/benchmark/

Performance results for different OPP settings

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Example Applications• USB Profiler

– Measurement of USB throughput via Bonnie++ benchmark

• Power Manager

– Provides details of power applications integrated into the Matrix GUI,

along with helpful command line equivalents.

• Cryptos

– Enables AES/3DES/SHA/MD5 cryptography and examples– Enables AES/3DES/SHA/MD5 cryptography and examples

– Utilizes the open source Open Crypto Framework and OpenSSL APIs

• Multimedia

– Enables ARM/Neon based multimedia codecs including H.264, MPG4 and

AAC

– Utilizes GStreamer and FFMPEG

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Pin Mux Utility• Designed for scalability

and device independence

• Imports device information to parse and populate the tool

• Identifies pin mux conflicts and configure conflicts and configure pad IOs

• Save & load board configurations

• Generates uboot source code for the selected pin mux & pad configuration

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Running servers

Here is a list of some of the running servers:

• ssh (port 22) - for access to a shell

• bone101 (port 80) - small server written in node.js serving up an intro

presentation

• GateOne (port 443) - access to a shell through Firefox or Chrome

• Cloud9 IDE (port 3000) - text editor and debugger for node.js applications • Cloud9 IDE (port 3000) - text editor and debugger for node.js applications

through Firefox, Chrome or Safari

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The SD Card

• Boot (vfat partition 1)

– MLO

– uEnv.txt

– u-boot.img

– uImage

– windows_users.htm

– quickstartguide.pdf

• rootfs (ext3 partition 2)

SDK 5 Directory Structure

• rootfs (ext3 partition 2)

– the untarred rootfs

• START_HERE (ext3 partition 3)

– setup.htm

– ccs_install.sh + CCS dir.

– ti-sdk-am335x-evm-05.03.00.00-Linux-x86-

Install

– beaglebonequickstartguide.pdf

– START_HERE.sh

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Matrix Application Launcher

2D Accel

Qt Embedded

QWidgetQGLWidget

ARM Benchmarks Pwr/Clk Browser Sys Info2D/3D

BlueZ

GStreamer

FFMPEG

(MPG4, H.264, AAC)

Wifi

WLAN

ARM-MPU Linux SW Stack

OpenGL ES

System on Chip

Target Board

FBDEV

DSS2

V4L2

ALSA

McSPI

USB MMC/SD UART

EthernetTouchscreen

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RS232

Putty

BeagleBone Development Environment

• CCS supports both Windows and Linux host PCs

• Linux application debug supported via integrated GDB

• Linux kernel debug supported via JTAG debug

LAN

Gdbserver on target linux

Putty

LAN JTAG

CCS

LAN

Gdb on CCS

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CCSv5 Features & Plugins

» Eclipse based - v3.7

» Runs on the Linux host

» Multi-Core Debug

» Run-Mode Linux debug support » Remote GDB debug

» Debug your Linux application and application processes » Debug your Linux application and application processes

» Stop-Mode Linux Support» Control target using JTAG

» Enables examination of target and current Linux process

» Requires installation of emulator package

» Linux & Embedded Development Eclipse plugins» GNU ARM Toolchain plugin

» Qt Integration plugin

» Remote System Explorer plugin

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CCSv5 – Remote System Explorer (RSE)

• Target Management plugin

• Configures and manages

remote systems,

connections & services

– Drag-and-drop access to – Drag-and-drop access to

remote file system

– View remote shell and

terminal

– Monitor remote process

table

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CCSv5 – Debugging Applications• Linux debugging is enabled using

gdbserver

• GDB and gdbserver communicate via a TCP connection

• Requires configuration of GDB on both host and target

• To debug a project, gdbserverwith port number 10000 (defined during configuration) should be initialized

• Regular debugging functions like Breakpoints, Step Over and Step Into can be used to walk through the source code

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Несколько слов о GDB...• GDB (GNU debugger) может облегчить рутинную отладку приложений на встроенных Linux-

системах.

• Чем полезен GDB: гораздо удобнее и правильней отлаживать программу, чем слепо гадать,

в каком месте происходит ошибка.

• Суть использования GDB состоит в том, чтобы запускать на целевой платформе не

полноценный GDB, а GDBserver. GDBserver позволяет запускать отладчик на другой машине,

отличной от той, где работает приложение. Преимущество использования GDBserver

состоит в том, что он использует лишь малую часть ресурсов, так как реализует лишь состоит в том, что он использует лишь малую часть ресурсов, так как реализует лишь

низкоуровневые функции отладчика, а именно установку точек останова (breakpoints),

доступ к регистрам процессора и чтение/запись памяти. GDBserver берет управление

приложением на себя и ожидает инструкций от удаленного GDB (работающего на машине

разработчика).

• Обычно процессор на рабочей станции разработчика (к примеру, x86) отличается от

процессора на целевой платформе (ARM, etc).

24Ссылка на источник:http://rus-linux.net/lib.php?name=/MyLDP/algol/gdb-remote.html

» Direct access to Factory Applications teams

» Quality answers from TI, Partners & Community Participants

» Search First -

E2E Forums - e2e.ti.com

» Search First -Customers may find answers to their questions without asking

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TI Embedded Processors.Wiki.ti.com

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