The Designer’s Guide to the Cortex-M Family is a tutorial-based book giving the key concepts required to develop programs in C with a Cortex M- based processor. The book begins with an overview of the Cortex- M family, giving architectural descriptions supported with practical examples, enabling the engineer to easily develop basic C programs to run on the Cortex- M0/M0+/M3 and M4. It then examines the more advanced features of the Cortex architecture such as memory protection, operating modes and dual stack operation. Once a firm grounding in the Cortex M processor has been established the book introduces the use of a small footprint RTOS and the CMSIS DSP library.
With this book you will learn:
- The key differences between the Cortex M0/M0+/M3 and M4
- How to write C programs to run on Cortex-M based processors
- How to make best use of the Coresight debug system
- How to do RTOS development
- The Cortex-M operating modes and memory protection
- Advanced software techniques that can be used on Cortex-M microcontrollers
- How to optimise DSP code for the cortex M4 and how to build real time DSP systems
Key Features
- An Introduction to the Cortex microcontroller software interface standard (CMSIS), a common framework for all Cortex M- based microcontrollers
- Coverage of the CMSIS DSP library for Cortex M3 and M4
- An evaluation tool chain IDE and debugger which allows the accompanying example projects to be run in simulation on the PC or on low cost hardware
Dedication
Foreword
Preface
Acknowledgments
About the Author
Chapter 1. Introduction to the Cortex-M Processor Family
Cortex Profiles
Cortex-M3
Advanced Architectural Features
Cortex-M0
Cortex-M0+
Cortex-M4
DSP Instructions
Chapter 2. Developing Software for the Cortex-M Family
Introduction
Keil Microcontroller Development Kit
The Tutorial Exercises
Installation
Exercise Building a First Program
The Blinky Project
Project Configuration
Hardware Debug
Chapter 3. Cortex-M Architecture
Introduction
Cortex-M Instruction Set
Programmer’s Model and CPU Registers
Program Status Register
Q Bit and Saturated Math Instructions
Interrupts and Multicycle Instructions
Conditional Execution—IF THEN Blocks
Exercise: Saturated Math and Conditional Execution
Cortex-M Memory Map and Busses
Write Buffer
Memory Barrier Instructions
System Control Block
Bit Manipulation
Exercise: Bit Banding
Dedicated Bit Manipulation Instructions
Systick Timer
Nested Vector Interrupt Controller
Operating Modes
Interrupt Handling—Entry
Interrupt Handling—Exit
Interrupt Handling—Exit: Important!
Exercise: Systick Interrupt
Cortex-M Processor Exceptions
Priority and Preemption
Groups and Subgroups
Run Time Priority Control
Exception Model
Exercise: Working with Multiple Interrupts
Bootloader Support
Exercise: Bootloader
Power Management
Moving from the Cortex-M3
Cortex-M4
Cortex-M0
Cortex-M0+
Chapter 4. Cortex Microcontroller Software Interface Standard
Introduction
CMSIS Specifications
CMSIS Core
CMSIS RTOS
CMSIS DSP
CMSIS SVD and DAP
Foundations of CMSIS
Coding Rules
MISRA C
CMSIS Core Structure
Startup Code
System Code
Device Header File
CMSIS Core Header Files
Interrupts and Exceptions
Exercise: CMSIS and User Code Comparison
CMSIS Core Register Access
CMSIS Core CPU Intrinsic Instructions
Exercise: Intrinsic Bit Manipulation
CMSIS SIMD Intrinsics
CMSIS Core Debug Functions
Exercise: Simple ITM
Chapter 5. Advanced Architecture Features
Introduction
Cortex Processor Operating Modes
Exercise: Stack Configuration
Supervisor Call
Exercise: SVC
Pend_SVC Exception
Example: Pend_SVC
Interprocessor Events
Exclusive Access
Exercise: Exclusive Access
Memory Protection Unit
Configuring the MPU
Exercise: MPU Configuration
MPU Subregions
MPU Limitations
AHB Lite Bus Interface
Chapter 6. Developing with CMSIS RTOS
Introduction
Getting Started
Setting Up a Project
First Steps with CMSIS RTOS
Threads
Starting the RTOS
Exercise: A First CMSIS RTOS Project
Creating Threads
Exercise: Creating and Managing Threads
Thread Management and Priority
Exercise: Creating and Managing Threads II
Multiple Instances
Exercise: Multiple Thread Instances
Build the Code and Start the Debugger
Time Management
Time Delay
Waiting for an Event
Exercise: Time Management
Virtual Timers
Exercise: Virtual Timer
Idle Demon
Exercise Idle Thread
Interthread Communication
Exercise: Signals
Exercise: Interrupt Signal
Exercise: CMSIS RTX and SVC Exceptions
Exercise: Semaphore Signaling
Exercise: Rendezvous
Exercise: Semaphore Barrier
Message Queue
Exercise: Message Queue
Memory Pool
Mail Queue
Exercise: Mailbox
Chapter 7. Practical DSP for the Cortex-M4
Introduction
Cortex-M4 Hardware Floating Point Unit
FPU Integration
FPU Registers
Enabling the FPU
Exceptions and the FPU
Using the FPU
Exercise: Floating Point Unit
Cortex-M4 DSP and SIMD Instructions
Exercise: SIMD Instructions
Exercise: Optimizing DSP Algorithms
The CMSIS DSP Library
CMSIS DSP Library Functions
Exercise: Using the Library
DSP Data Processing Techniques
Exercise: FIR Filter with Block Processing
Fixed Point DSP with Q Numbers
Exercise: Fixed Point FFT
Designing for Real-Time Processing
Buffering Techniques: The Double or Circular Buffer
Buffering Techniques: FIFO Message Queue
Balancing the Load
Exercise: RTX IIR
Shouldering the Load, the Direct Memory Access Controller
Chapter 8. Debugging with CoreSight
Introduction
CoreSight Hardware
Debugger Hardware
CoreSight Debug Architecture
Exercise: CoreSight Debug
Hardware Configuration
Software Configuration
Debug Limitations
Instrumentation Trace
Exercise: Setting Up the ITM
Software Testing Using the ITM with RTX RTOS
Error Task
Software Test Task
Exercise: Software Testing with the ITM
Instruction Trace with the ETM
Exercise: Using the ETM Trace
System Control Block Debug Support
Tracking Faults
Exercise: Processor Fault Exceptions
CMSIS SVD
Exercise: CMSIS SVD
CMSIS DAP
Cortex-M0+ MTB
Exercise: MTB
Debug Features Summary
Appendix
Debug Tools and Software
Books
Silicon Vendors
Accreditation
Contact Details
Index
- Yiu: The Definitive Guide to the ARM Cortex-M3, 2e, Newnes, 2010, 479 pp, Paperback, ISBN: 9781856179638, $61.95/ £37.99/ €44.95
- Wilmshurst: Designing Embedded Systems with PIC Microcontrollers, 2e, Newnes, 2010, 750pp, Paperback, ISBN: 9781856177504, $45.95/ £27.99/ €32.95
- Wilmshurst: Fast and Effective Embedded Systems Design, Newnes, 2012, 384pp, Paperback, ISBN: 9780080977683, $59.95/ £36.99/ €42.95
Embedded systems engineers, undergraduates and graduates developing embedded applications.
