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ARM and Embedded Software KnowHow

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Doulos has been an ARM Approved Training Center since 2002. In that time, we have amassed a huge bank of know-how and expertise related to ARM processors which we would like to share with other ARM users. Browse this page to discover a variety of technical resources related to ARM technology and embedded software. Technical resources will be added on an on-going basis, so please check back again to see what has been added!

Please feel free to contact the Doulos team if you have comments or questions about ARM or training.

QUICK LINKS
Video Resources »
Webinars On-Demand »
Tutorials »
Papers and Presentations »
Hints & Tips »

Video Resources


Video ARM Cortex-M1 for FPGAs
Jens Stapelfeldt from Doulos describes the main features of the ARM Cortex-M1 architecture, which is a microcontroller specialized for implementation on FPGA devices.
Video Introduction to CMSIS for ARM Cortex-M
Jens Stapelfeldt from Doulos describes CMSIS, the ARM Cortex Microcontroller Software Interface Standard,.which provides an abstraction layer for programming all Cortex M microcontrollers.
Video Using the Cortex-M3/M4 Flash Patch Breakpoint Unit
David Cabanis from Doulos explains how to use the flash patch breakpoint unit of the ARM Cortex-M3 and M4 processors.
Video Using your C Compiler to Exploit NEON
Dave Cabanis from Doulos explains how to exploit the NEON coprocessor unit found in the ARM Cortex A processor family from your C code.

Webinars On-Demand

Webinars OD
Webinar New! Squeezing the most out of battery-life using ARM Cortex-M processors
In this webinar, strategies for optimizing microcontroller energy profiles will be examined which will extend battery life while maintaining the integrity of the system.
Webinar ARM Cortex-A9 Processor Core Overview
Senior Member of Technical Staff, Dr David Cabanis, presents a training webinar, providing an introduction to the core architecture of the ARM Cortex-A9 processor.
Webinar Embedded C for ARM Cortex-M
In this webinar, Senior Member of Technical Staff, Dr David Cabanis will provide an understanding of the basic requirements for Cortex-M software development to help those looking to bring the bare metal system to life.
Webinar CMSIS Turns 3.0
Little over three years ago CMSIS was introduced to the world as a library that provides an abstraction layer between processor core, tool chain and both, device library and user code. What has happened since? Marcus Harnisch, Senior Member of Technical Staff, answers this question and more.

Tutorials


Paper Getting started with Cortex-M3 CMSIS programming
David Cabanis from Doulos explains the basics of creating a CMSIS compliant, Cortex-M3 based project and taking it through the MDK tool chain.
Paper Retargetting a C Library Function
David Cabanis from Doulos touches on the topics of semi-hosting and standard C library function retargetting. In addition the Cortex-M3 Instrumentation Trace Macrocell (ITM) will be put to use as a mean to communicate with a debug host.
Paper Programming the MCBSTM32 Evaluation Board
David Cabanis from Doulos looks at programming the Keil Cortex-M3 evaluation board (MCBSTM32) using a CMSIS compliant approach whilst accessing specific device's perpherials.
Paper Getting started with CMSIS - The Cortex Microcontroller Software Interface Standard
CMSIS supports developers and vendors in creating reusable software components for ARM® Cortex®-M based systems. This 17 page tutorial (pdf), created by Doulos ARM experts, provides a thorough introduction to the new standard, and includes two tutorial examples.

Papers and Presentations


Paper Embedded C programming for Cortex-M Processors
In this extended presentation, David Cabanis from Doulos explains the basics of embedded C programming in the context of Cortex-M processors and how to bring a bare metal sytem to life. Amongst the covered topics you will find: Cortex-Mx startup code and vector tables, linker scripts, CMSIS compliant C code and assembler programming.
Paper Using FreeRTOS on the ARM/NXP mbed
Frank Mölendörp from Doulos explains how to run the FreeRTOS on the ARM/NXP mbed prototyping kit.
Paper uClinux on an ARM Cortex-M4: a cost-benefit analysis
Frank Mölendörp from Doulos gives a short introduction to the possibilities and the limitations of running uClinux on a small microcontroller.
Paper Using the Cortex-M3/M4 Flash Patch and Breakpoint Component
Marcus Harnisch from Doulos explains how to use the Cortex-M Flash Patch and Breakpoint unit to make firmware updates in an MCU-vendor independent manner.
Paper Migrating from AHB to AXI based SoC Designs
Marcus Harnisch from Doulos explains the evolution of the ARM bus architecture from the original AHB standard through to the latest AXI4-Stream and AXI4-Lite variants.
Paper Using your C compiler to exploit NEON™ Advanced SIMD
With the v7-A architecture, ARM has introduced a powerful SIMD implementation called NEON™. NEON is a coprocessor which comes with its own instruction set for vector operations. While NEON instructions could be hand coded in assembler language, ideally we want our compiler to generate them for us. This paper explains how the RealView compiler tools (RVCT) and other modern compilers use a blend of sophisticated analysis techniques and language extensions to fulfill their job.
Paper The quickest way to develop your ARM Cortex-M based product
The ARM Microcontroller Prototyping System (MPS) is based on a platform using FPGAs and allows the fast and easy evaluation and development of an ARM Cortex-M system. This paper will discuss the possibilities and limits of this system, will reflect on the first experience and shows the system design flow with the available hardware and software IP.
Paper Product Migration from FPGA (Cortex-M1) to a Standard ARM Based Microcontroller
Introducing the ARM Cortex-M1 and Cortex-M3 architectures, this technical paper shows how to migrate a product from an FPGA to a standard ARM-based microcontroller. It was first presented at the Embedded World Conference 2008.
Paper Implementation of a Cordic Algorithm using the Actel Cortex M1 Dev-Kit
In this extensive tutorial Doulos ARM experts discuss the use of the Actel Cortex-M1 Development Kit to demonstrate how to create a microprocessor-based system, along with user-defined hardware functions coded in VHDL, in a single FPGA device.

Hints & Tips


Paper New! KPTrace: A Linux Trace Infrastructure
In this article Adrian Thomasset from Doulos Embedded gives an overview of Kptrace and shows it being tested on the following devices: ARMv6 (Raspberry Pi), dual-core ARMv7 (Wandboard).
Paper New! Embedded Linux: Debugging User Space Seg Faults
In this article Simon Goda from Doulos Embedded takes a brief look at some of the tools there are available in a typical embedded Linux development environment, which can help track down problems.

Here you will find some short technical articles relating to the use of the ARM instruction set.

Paper Configuring (X)Emacs for ARM RVCT
In this article Marcus Harnisch from Doulos introduces Emacs as an editor that can be customized easily to support ARM's RealView Compilation Tools (RVCT).
Paper Implementing Semaphores on ARM cores
Semaphores are used to manage access to a shared resource. Depending on the type of semaphore, one or more clients may be granted access.
Paper Efficient byte swapping of data blocks in ARMv6 and ARMv7-A/R
Since the introduction of the ARM11 processor family, the ARM instruction set supports on-the-fly switching of the current endian mode. Natively a little endian architecture, the processor can be put into a big endian mode to process chunks of data in that format. DSPs, network adapters and similar peripherals might return processed data in big endian format.

For further information about the Doulos ARM training portfolio visit www.doulos.com/arm
ARM is a registered trademark, and Cortex is a trademark of ARM Holdings Plc.


Book: C und C++ für Embedded Systems

We are pleased to recommend the third edition of this popular book (available in German language only), which covers embedded software development contains more than forty pages about the ARM Cortex-M3 processor core, written by ARM experts from Doulos!

Die dritte Auflage dieses Buches über Embedded Software Entwicklung enthält mehr als 40 Seiten zum Thema ARM Cortex-M3, die von Doulos ARM Experten geschrieben wurden. Das Cortex-M3 Beispiel aus dem Buch wird aktualisiert und an Cortex-M3 basierte Microcontroller anderer Hersteller angepasst. Weiter >>

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