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Development Toolsfor ARM-Powered Devices

Name of presenter

RealView Microcontroller Development KitULINK2 USB/JTAG Adapter

Evaluation Boards

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Session Agenda Introduction and Overview

RealView Microcontroller Development Kit µVision Integrated Development Environment

Advantages of Complete Device Simulation

RealView Compilation Tools

Hardware Components Evaluation Boards

ULINK2 USB-JTAG Adapter

Real-Time Agent

RTX Real-Time Kernel RTOS Concepts

RTX Features

RTX Configuration

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Keil an ARM Company Leading supplier of MCU development tools

ANSI C/C++ compilers, Debuggers

Device simulation

Middleware components

Extensive Device Database®

>1,200 8/16/32 bit MCU’s

Established support Web support portal.

User group structure

Global distribution network

Huge installed base 100K+ users world wide

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Keil and RealView

RealView Compiler Replaces Keil CARM compiler for ARM processor-based MCU’s

C51 and C166 will continue to be developed

Industry leading compiler – performance and code size

ARM tools branded as ‘RealView’

Keil µVision Common to all Keil based tools

Cx51, C166 and ARM

More than 100,000 users

Powerful, easy to use, standard device focused

Tools supporting ARM MCU devices use the ARM RealView Compiler, µVision is common to all Keil based tools.

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Evaluation BoardsEvaluation Boards

ARM7, ARM9 and Cortex-M3 based MCU devices

Target DebugTarget DebugULINK2 USB-JTAG Adapter

with Real-Time Agent

RealViewRealView

RTX Source Code

TCP/IP Suite

Flash File System

USB Device Interface

CAN Interface

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Real-Time Library

Tools for ARM-Powered DevicesT

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Development KitRealView Microcontroller

Development Kit

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µVision Device Database & IDE

RTX RTOS Kernel

RealView C/C++ Compiler

µVision Debugger & Analysis Tools

Complete Device Simulation

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Microcontroller Development Kit

Industry leading technology ARM RealView Compiler

Keil µVision IDE / Debugger

Complete device support ARM7, ARM9, Cortex-M3 MCU’s

Includes Start-up code & Flash algorithms

Complete device simulation

RTX Real-Time Kernel Efficient RTOS Kernel for small systems

Complete software development environment for ARM processor-based microcontrollers. Easy to learn and easy to use!

RealView Microcontroller Development Kit

RealView Microcontroller Development Kit

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µVision Device Database

RTX RTOS Kernel

RealView C/C++ Compiler

µVision Debugger & Analysis Tools

Complete Device Simulation

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RealView Real-Time Library

Meets Embedded Developers needs Solves common embedded challenges

Real-Time Systems Embedded communication & networking

Designed for use with MCU Devices

Extensive Range of Examples Easy to begin working. Can be used as building blocks.

Royalty Free Includes RTX source code. License – single user, multi project

Extensive library of common ready-to-use middleware components, speed software development.

RealViewRealView

RTX Source Code

TCP/IP Suite

Flash File System

USB Device Interface

CAN Interface

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Real-Time Library

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Hardware Components

Range of evaluation boards and debug hardware.

ULINK2 USB – JTAG Adapter Debug and Flash programming

JTAG and SWD support

Evaluation Boards ARM7, ARM9 & Cortex-M3

NXP, ST & Luminary

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Challenges for Embedded Developers

How do all of these features really help me to develop my application quickly and

accurately?

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Embedded Design Questions

Device selection ARM7, ARM9 or Cortex-M3?

Peripheral mix and memory?

Application development Easy device configuration?

Ensuring the application fits into hardware resources (speed, memory)?

Compilation tools, Middleware and libraries?

Verification and debug Most efficient way to verify software?

Running hardware system debug?

ARM-based devices and MCU’s make complex applications possible, good tool support enables applications to be developed efficiently.

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Peripherals I/O Pins, Timers, PWM A/D and D/A Converters UART, SPI, I2C Complex communication

peripherals (CAN, USB, Ethernet)

Wide range of MCU Cores 8/16/32 Bit On-chip Memory Interrupt System

Customers expect supportfor specific Microcontrollers. Block Diagram of LPC2378

JTAG Debug and Embedded Trace Macrocell

2 CAN Channels

512KB On-chip Flash

Power management, RTC, reset and watchdog, internal oscillator and PLL

104 GPIO Pins

32KB SRAM, 2KB Battery back-up RAM

16-bit standard Timers including PWM

10/100 Ethernet MAC with DMA & 16KB Static RAM

USB 2.0 Interface with 8KB Static RAM

2 Programmable DMA Channels

72MHz ARM7TDMI-S

SD/MMC Memory Card I/F

10-bit D/A converter

Three I2C InterfacesTwo channels for SPI or

SSP

10-bit A/D converter (eight channels)

Four 16550-style UART’s

Today’s Microcontroller Selection

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RealView MDK supports MCU’s

Out of the box support >180 ARM MCU’s Start-up code and configuration wizards Flash Algorithms and debug information Examples and Templates

Complete device simulation Not only a processor simulator! Includes On-Chip peripheral’s

A/D, D/A, EBI, Timers UART, CAN, I2C, Interrupts .. External signals and I/O

Instantly begin developing software, without the need for hardware or in-depth knowledge of target MCU.

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Application DevelopmentµVision, device configuration and Compilation tools

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µVision IDE Leading microcontroller Integrated Development

Environment.µVision is the industry leading Integrated Development Environment (IDE)

for microcontroller and standard devices.

Common to ARM, C166 and 8051 platforms Includes target device configuration and Device Database

High speed simulation

Instruction Set

On-chip peripherals

Source code editor

Project debugging

Flash programming

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Device Database

On-line Includes Parametric Search

www.keil.com/dd

uVision Includes main parameters for device

Enables easy project creation

Fast device configuration

Enables quick selection of suitable device. Available on-line and integrated in µVision.

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Device Configuration

Available for all devices Included in Device Database

User configurable (text or wizard)

Configuration Wizard Main parameters for device

Drop-down selection or user entry

Enables stable device start-up

Configuration wizards enable effortless device set-up.

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RealView Compilation ToolsHighest performance compiler for ARM-Powered devices

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RealView Compilation Tools

The RealView Compilation tools contain: Highly-optimizing ISO C/C++ compiler

Supports ARM, Thumb and Thumb2 Instruction sets including FPU

Full C and C++ run-time library support

The RealView Compiler Advantage Smaller, Faster Code

RealView Compiler 3.1 Micro Library for small Embedded Systems

Source Browser Integration for µVision

Best in class compilation tools, enabling applications to run faster while reducing system cost.

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Superset of standard RealView C LibraryDeveloped for embedded and memory constrained applicationsOptimized for embedded applications

Minimal overhead for un-used OS functionality Un-used functions removed from memory footprint

Faster system bring-up Most functions initialized at point of use

Up to 92% Reduction in Library Code size

‘empty main’Even more for ‘Hello World’ using Print f

MicroLib – Optimized C Libraries

MicroLib significantly reduces library size in embedded applications

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MicroLib – Optimised for Embedded

Processor Object Standard MicroLib % saving

ARM7TDMI ARM Library Total 21,352 8,980 61%

RO Total 25,608 12,816 51%

ARM7TDMI Thumb Library Total 17,156 6,244 57%

RO Total 20,129 9,348 50%

Cortex-M3 Thumb-2 Library Total 15,018 5,796 63%

RO Total 18,616 8,976 54%

Based on Dhrystone 2.1 Benchmark

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5000

10000

15000

20000

25000

ARM Thumb Thumb20

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10000

15000

20000

25000

30000

ARM Thumb Thumb2

Library Totals RO Totals

61% 51%

RealView MDK libraries reduce system code size by 50% to 90%

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F12Displays variable definition

Source Browser ViewDisplays all locations of

variables or functions

Source Browser

Displays variable and function definitions and where they are used throughout your application.

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Verification and DebugComplete Device Simulation and Analysis Tools

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Complete Device SimulationThe µVision Advantage

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µVision Device Simulation

Complete simulation of target. Fast Instruction Set Simulation (ISS)

On-chip peripheral’s ADC, DAC, EBI, Timers

UART, CAN, I2C, Interrupts ….

Includes external signals and I/O

Dialog Boxes Complete access to peripherals

Read and write

All components of the Target Device are Simulated.Code can be run on entire device.

Device Simulation

D/A

A/D

SRAM

Flash / EEPROM

UART

SPI

Ethernet

Interrupts

GPIO

CAN

USB

TimersCPU

www.keil.com/uVision/db_sim.asp

Extending Simulation

AGSI Interface

Board or System Interfaces

Device Simulation

External Peripherals

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The µVision Advantage

Advantages of Complete Device Simulation Test before hardware available

Hardware cannot be damaged

No extra components required

Real advantages v hardware Embedded Trace has limitations

Many things are only possible in simulation

Lower cost

Easy with RealView MDK All included in Device Database

Removes configuration hassles

Complete Device Simulation allows software testing with no hardware,providing quick test cycles and improving product quality.

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ETM Style Trace

ETM Trace is not available in all systems.

ETM is relatively new to MCU world Increasing with ARM9 MCU families

Very rare in ARM7 MCU devices

ETM not always available Requires additional pins

ETM pins shared with other I/O

E.g. ADC or GPIO

Additional Hardware Costly

Complete Device Simulation offers all the advantages of ETM without the disadvantages

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CPU and Peripheral Control

Simulation offers true system synchronization with all components that allows total system halt, detailed analysis, and full run control.

Halt Stops Peripherals Whole system stops

Breakpoint and Single-Stepping

External signals all stop

Complete System Analysis Test can be reproduced

Executes from a ‘known’ state

Full Power-Down Control Debug in all MCU states

System is always accessible

Timing analysis of power-down activity

No Adaptation Hassle Hardware can be destroyed

Small systems are physicallyhard to connect

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Analysis ToolsThe µVision Advantage

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µVision Code Coverage

Simulation gives extra features not available with JTAG Debuggers.For example: Code Coverage at Source and Assembly Level.

Execution Statistics Always Active for Complete Project

Instruction Status

Color Coded

Multi-Session Coverage

With Save / Restore

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µVision Execution Profiling

Simulation provides exact CPU Timing and allowsdetailed program execution analysis with different parameters.

Detailed Timing Statistics Active for Complete Project

Execution Time

Number of Executions

Flexible Views

Source

Disassembler

Compete Overview

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Timing AnalysisAnalog & Digital I/O Pins and

Signals Internal Variables

Exact TimingUsing Cursor LineTool-Tip Delta Information

Direct Code AnalysisFrom Analyzer Window

µVision Logic Analyzer

Allows analog and digital signals to be monitored graphically.Easy, fast analysis of signal timing with code trace.

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Use Cases for Simulation Generic: Detect Illegal Memory Access

ULINK2: Analysis of JTAG I/O Pins

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Detect Illegal Memory Accesses Requirement: Detect illegal accesses that fail in Hardware

MAP command allows to define access rights: read, write, execute

On illegal memory access you may display messages or stop simulation

“Better verification with no extra effort ”

http://www.keil.com/download/docs/323.asp

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Use Case: Detect I/O Glitches Requirement: Analyze timing and glitches of I/O Pins

Using the Logic Analyzer the JTAG signal pin timing is verified

Glitches of I/O pins can be analyzed

Synchronisation with the Source Code simplifies corrections

http://www.keil.com/download/docs/322.asp

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Target Hardware DebugIncluding Real-Time Agent

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New FeaturesCortex-M3 Serial Wire Debug and TracePlug and Play USB InstallationOn-the-fly debugging with Real-Time Agent

Program DebuggingSingle Stepping & Real-Time ExecutionFlash and Software BreakpointsMemory Access Breakpoints

Flash ProgrammingDownload, Verify, and Execute

ULINK2 – USB / JTAG Adapter

Easy to use USB run control adapter, supporting JTAG debug and Flash programming.

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Embedded Debug Challenges

Program Halt is not practical in many applications Mechanical System: depends on movements that cannot be halted Motor Control: may even destroy the hardware due to overloading Communication: time-outs occur when hand-shake is missing

Developers need solutions that: Provide verification and timings for algorithm development

Work on standard hardware with minimal overhead

Are easy-to-implement and easy-to-use

RealView MDK includes: ULINK2 Real-Time Agent: allowing ‘on-the fly’ debugging

Traditional debugging with run-control halts program execution. The real world does not stop which makes run-stop debugging difficult.

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Real-Time Agent

JTAG

PeripheralsCPU

Application +

Real-Time Agent

Small C Module Adds little overhead to user application ~1,500Bytes R/O

Communicates using standard JTAG channel via ULINK2

On-the-fly Debugging Read and Write memory and variable access during program execution

Set breakpoints while program is running

Serial I/O (printf) via debug channel

Enables target debugging on-the-fly that requires no system halts

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Evaluation BoardsARM7, ARM9 and Cortex-M3

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Wide Range Evaluation Boards

Designed for easy set-up Extensive Program Examples.

Wide range of peripherals

Popular ARM based MCU’s

Proven hardware for quick project development and debug.

STR91x

LPC23x

STR750

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RTX Real-Time Kernel

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Why use a Real-Time Kernel? Building Block

Software / Hardware interface layer

Easy expansion of system software

Hardware independent

House Keeping Process scheduling

CPU resource management

Task communication

Focus on Application Development Leave basic system management

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Software Concepts for ARMThe ARM core requires a different mindset for embedded applications.

ARM7 & ARM9 have just two interrupt levels Standard (IRQ) and Fast (FIQ) but provide CPU modes with separate interrupt stacks for predictable stack requirements.

‘main’ as End-less Loop Solution for simple applications Usage together with powerful

multi-level interrupt system Stack usage un-predictable

Using a Real-Time Kernel Allows application to be separated

into independent tasks Message passing eliminates

critical memory buffers Each task has an own stack area Interrupt communication with

event flags and messages

TasksPriority 0

IRQ

FIQ

TasksPriority 1

TasksPriority 2

Time

Main

ISRlevel 0

ISRlevel 1

ISRlevel 2

Time

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What makes a Good RTOS Performance

Predictable behaviour

Low latency

High number of interrupt levels

Ease of Use Flexible API and implementation

Tool-chain integration.

Scheduling options

Multitasking, Preemptive, Round Robin.

System Friendly Consumes small amount of system resource

Proven Kernel

Low cost

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Real-Time? Real-Time does not equal High Speed

Not all tasks are ‘Super High Speed’

Systems perform to deadlines

Tasks need to complete before deadline and other tasks

Real-Time OS not to be confused with high speed requirements

Real-Time, not mission critical Varying levels of Real-Time

Hard, Firm, Soft and Non

RTOS not confined to critical systems

Real-Time OS = Building Block RTOS provides easy Multitasking Environment

House keeping tasks

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RTX Features

Full-featured Real-Time kernel meets the requirements of a ‘good’ real-time kernel

Task Specifications

Priority Levels 256

No. of Tasks Defined Unlimited

No. of Tasks Active 256

Context Switch < 300 Cycles

Interrupt Latency < 100 Cycles

Memory Requirements Bytes

CODE Space(depending on used functionality)

1.5K – 5K

RAM Space(each active task requires an own stack space)

< 500

Main Features Multi-Tasking – Round Robin, Pre-emptive, Cooperative

Unlimited – User Timers, Semaphores and Mailboxes

Royalty free

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Process Management Create and delete tasks Change task priorities Event flag management Interrupt functions CPU resources

Multi-Tasking Preemptive context switching Scheduling Semaphore management

Real-Time Control Deterministic behaviour

Inter-task Communication Mailbox management Interface to interrupt functions

Memory Allocation Thread-safe (usage even in ISR)

RTX Real-Time Kernel

Full-featured Real-Time kernel designed to meet the challenges of Embedded System Design

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Compilation Tasks are integrated into the RealView C Compiler language.

Close integration in RealView MDK (µVision)

µVision IDE automatically includes RTX Libraries

Tool Chain Integration

void task1 (void) _task {… code of task 1 placed here….

}

RTX is fully integrated into RealView MDK for easy development and debugging

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RTX Setup

All major parameters of RTX can be easily changed using the µVision configuration wizard.

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Kernel Aware Debugging

Tasks and Event analysis Resource Loading

Allowing resource optimisation

RTX and µVision are tightly integrated, kernel aware debugging is fully supported.

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RTX ExamplesExamples and Templates

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Traffic Light LED’s are timed or controlled by push button

Utilizes interrupt control, event management and multitasking capabilities of RTX Kernel

Demonstrates RTX concepts

RTX Examples

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RTX Examples

CAN Tx

CAN Rec LED’s

Analog Input Voltage

Incremental Script

CAN Example using RTX Mailbox and event handling

CAN Send (Tx) – shows automatic data handling capabilities

CAN Rec – message checking with instant message receipt

– task wait and return

– almost impossible without Real-Time Kernel

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Get More Information

Application Notes

Program Examples

Device Database

Support Knowledge

Discussion Forum

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