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 - additional technical resources will be added on an on-going basis, so please check back again to see what has been added!

NEW Embedded Software Resources

In collaboration with real time embedded software training experts, Feabhas,
you can now also access embedded software resources from this page.

We will be adding to this resource section very shortly, so make sure you
check this page regularly for updates...

View embedded software resources »

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

ARM Resources

Here you can download some substantial technical papers and tutorials concerning the use of ARM® Cortex™ devices.

• NEW: 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.
  
  
• NEW: 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.
  
  
• NEW: 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.
  
  
• Using FreeRTOS on the ARM/NXP mbed Frank Mölendörp from Doulos explains how to run the FreeRTOS on the ARM/NXP mbed prototyping kit.
  
  
• 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.
  
  
• 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.
  
  
• 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.
  
  
• 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. Automatic analysis whether an iterative algorithm can be mapped to parallel vector operations is not trivial not the least because the C language is lacking constructs necessary to support this. 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.
  
  
• The quickest way to develop your ARM Cortex-M based product In time for the Embedded World 2010 ARM is introducing the Cortex-M4, the fourth processor in the M-class architecture. No other ARM architecture has got some many licenses in such short time frame. 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. The encrypted image of the ARM Cortex-M family core (Cortex-M0/M1/M3/M4 see figure 1.) in one of the FPGAs makes this system available to all interested customers. 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. This system is the ideal starting point for engineers to evaluate and develop an entire hardware and software system based on Cortex-M cores from ARM.
  
  
• 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. Zip files for specific examples using the STM32 from STMicroelectronics and Stellaris LM3S from Luminary Micro microcontrollers (both supporting RealView MDK and IAR tools) are also available for download here >>. The tutorial hand-out was first made available at Embedded World 2009. Please note that access to the zip files requires registration, but the pdf of the CMSIS tutorial can be downloaded without registering as a Know-how user.
  
  
• 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.
  
  
• 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

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

• Configuring (X)Emacs for ARM RVCT
• Implementing Semaphores on ARM cores
• Efficient byte swapping of data blocks in ARMv6 and ARMv7-A/R

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 >>

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.