R4	Cortex-M3 implementation

This course covers the Cortex-M3 ARM core

Objectives This course is split into 3 important parts: Cortex-M3 architecture Cortex-M3 software implementation and debug Cortex-M3 hardware implementation. Although the Cortex-M3 seems to a simple 32-bit core, it supports sophisticated mechanisms, such as exception pre-emption, internal bus matrix and debug units. Through a tutorial, the Cortex-M3 low level programming is explained, particularly the ARM linker parameterizing and some tricky assembly instructions. Note that attendees can replay these labs after the training. The course also details the hardware implementation and provides some guidelines to design a SoC based on Cortex-M3, taking benefit of concurrent AHB transactions An overview of the Coresight specification is provided prior to describing the debug related units. Labs can be run under 2 possible environments: Keil IDE or IAR IDE. A more detailed course description is available on request at info@ac6-formation.com

Prerequisites
	A basic understanding of microprocessors and microcontrollers.

Plan

ARM Cortex-M3 CORPORATE INTRODUCTION ARM architectural summary Meeting the challenge with profiles ARM instruction set evolution ARM Cortex-M3 INTRODUCTION ARM Cortex-M3 processor macrocell Programmer’s model Program status registers Instruction pipeline Fixed memory map Memory Protection Unit Interrupt handling Power management ARM Cortex-M3 CORE Block diagram Datapath and pipeline Write buffer Bit-banding State, privilege and stacks Alignment and endianness System control block THUMB-2 INSTRUCTION SET General points on syntax Data processing instructions Branch and control flow instructions Memory access instructions Exception generating instructions If then conditional blocks Stack in operation Accessing special registers Tutorial: Becoming familiar with Keil IDE How to design a new project Parameterizing the IDE Executing simple labs to understand the operation of assembly complex instructions, such as table branch and it INTERRUPTS Basic interrupt operation Interrupt entry / exit, timing diagrams Tail chaining Interrupt response, pre-emption NVIC registers Interrupt prioritization Interrupt implementation configurability, impact on core size EXCEPTIONS Exception behavior, exception return Non-maskable exceptions Privilege, modes and stacks Priority boosting Vector table MEMORY TYPES Device and normal memory ordering Memory type access restrictions Access order Memory barriers MEMORY PROTECTION UNIT Memory protection overview Fault status and address registers Region overview, memory type and access control, sub-regions Setting up the MPU EMBEDDED SOFTWARE DEVELOPMENT WITH Cortex-M3 Embedded development process Application startup Placing code, data, stack and heap in the memory map, scatterloading Reset and initialisation Placing a minimal vector table Building and debugging your image Long branch veneers Tutorial: Becoming familiar with Keil IDE Scatterloading Retargeting the C library Handling interrupts in C language Using SVC

INVASIVE DEBUG Coresight debug infrastructure Halt mode Monitor mode Debug event sources Flash patch and breakpoint features FPB remapping Data watchpoint and trace DWT registers ARM debug interface specification AHB-Access Port Possible DP implementations NON-INVASIVE DEBUG Basic ETM operation Instruction trace principles ITM packets DWT trace packets Time-stamping packets Instruction tracing TPIU components TPIU pinout Software interface C/C++ COMPILER HINTS AND TIPS FOR Cortex-M3 ARM compiler optimisations Mixing C/C++ and assembly Coding with ARM compiler Measuring stack usage Unaligned accesses Local and global data issues, alignment of structures Tutorial: Implementing these optimizations by using ARM/Keil compiler AMBA3.0 INTERCONNECT SPECIFICATION Purpose of this specification 2-bus organization Example of SoC based on AMBA specification AHB - ADVANCED HIGH PERFORMANCE BUS Centralized address decoding Address gating logic Arbitration, bus parking Single-data transactions Address pipelining Sequential transfers AHB-lite specification APB - ADVANCED PERIPHERAL BUS Second-level address decoding Operation of the AHB-to-APB bridge APB3.0 new features AHB CORTEX-M3 HARDWARE IMPLEMENTATION Clocking and reset, power management Bus interfaces AMBA-3 compliance Unifying the code buses Branch Status signal Unaligned access management Connection to the TPIU

 

Durée	Prix	Calendrier
4 jours	0 €