ARM Cortex-M23 Software Design

This course is designed for software engineers writing application and system software for platforms using the Cortex-M23 processor.

• C programming for Embedded Systems training (or equivalent C programming knowledge)
• Experience of assembler programming is not required but would be beneficial
• Some knowledge of embedded systems
• A basic awareness of ARM is useful but not essential

This class uses training materials developed by ARM®

Day 1

• Introduction to Arm

• Cortex-M23 Overview
Architectural Features • Register View • Modes of Execution • System Interfaces • Memory Map • Exceptions • Security Attribution • Power Management • Debug Features

• Armv8-M Baseline Programmers’ Model
Introduction • Data Types • Core Registers • Modes, privilege and stacks • Exceptions • Instruction Set Overview

• Tools Overview for Arm Microcontrollers
Arm Compilation Tools • Keil MDK • DS-5 Arm • Fast Models

• Cortex-M23 Processor Core
Pipeline block diagram/Overview • Fetch, Decode/Execute, Complex Executes • Unaligned access penalties

• CMSIS Overview
Introduction • CMSIS-Core • CMSIS-DSP • CMSIS-Driver • CMSIS-RTOS • CMSIS-SVD • CMSIS-Pack • CMSIS-DAP

 

Day 2

• Armv8-M Baseline Assembly Programming
Introduction • Data Processing Instructions • Load/Store Instructions • Flow Control • Miscellaneous

• Armv8-M Baseline Exception Handling
Introduction • Exception Model • Exception Entry and Exit Behavior • Prioritization and Control • Interrupt Sensitivity • Writing the Vector Table and Interrupt Handlers • Internal Exceptions and RTOS Support • Fault Exceptions

• Armv8-M Memory Protection
Memory Map • Memory Regions • Memory Attributes • MPU Programmer's model • Configuring the MPU • Memory Management Faults

 

Day 3

• Armv8-M Synchronization
Introduction to synchronization and semaphores • Exclusive accesses • Memory ordering

• Armv8-M Baseline Compiler Hints and Tips
Compiler Support for Armv8-M • Language and Procedure Call Standards • Compiler Optimizations • Coding Considerations • Mixing C/C++ and Assembler • Local and Global Data issues

• Armv8-M Baseline Linker Hints and Tips
Linking Basics • System and User Libraries • Veneers • Stack Issues • Linker Optimizations and Diagnostics • Arm Supplied Libraries

• Armv8-M Embedded Software Development
Default compilation tool behavior • System startup • CMSIS-CORE startup and system initialization code • C library initialization • Tailoring the image memory map to a device • Scatter-loading • Linker placement rules • Stack and heap management • Further memory map considerations • Post startup initialization • Tailoring the C library to a device • Building and debugging an image

 

Day 4

• Armv8-M Debug
Introduction to Debug • Debug Modes and Security • Debug Events and Reset • Flash Patch and Breakpoint Unit - FPB • Data Watchpoint and Trace Unit - DWT • Micro Trace Buffer - MTB (optional) • Embedded Trace Macrocell - ETMv4.2 (optional) • Trace Port Interface Unit - TPIU (if ETM is implemented)

• Armv8-M DSP Extension
Extensions Overview • DSP Extension

• Armv8-M Security Extension
Overview • Memory Configuration • Function Calls & Toolchain Support • Exceptions

Arm and Cortex, are registered trade marks of Arm Holdings Plc.

The exercises cover a large spectrum of topics; Starting with assembly programming, data transfers, data processing, flow control, digital signal processing. Exception handling with the implementation priority schemes and pre-emption. Mixing C and assembly to provide a semi-hosted solution. Implementing secure applications using the TrustZone-M features.