1. VisSim for Model Based Embedded System Development Visual Solutions, Inc. 487 Groton Road, Westford MA USA (800) VISSIM-1

2. Agenda Visual Solutions Introduction VisSim Product Review VisSim Demo
Target-in-loop simulation + code gen demo

3. Visual Solutions Founded in 1989 Headquarters in Westford, Mass
Over 350,000 licenses worldwide
EDN Magazine Hot 100
MathSoft OEM since 2000
TI Partner since 2000 2

4. Visual Solutions Markets & Major Accounts
Aerospace Motion Control Power & Gas
Allied-Signal Allen Bradley British Gas
General Dynamics Danaher Motion Arizona P&G GEC Alsthom Maxon Motor AG Florida Light & Power
BF Goodrich Aerospace General Electric Drives Hitachi Power
Boeing EPH Elektronik GmbH Manitoba Power
British Aerospace Indramat Ontario Hydro
Cessna Instron Corporation Pacific Gas & Electric
Eglin AFB Copley Controls Three Mile Island
Kollsman Kollmorgen Stanwell Coal Gen
Litton Parker Hannifin Tenneco Gas
Lockheed-Martin Universal Instruments TVA
NASA Spectra Physics Union Electric
Northrop-Grumman Vickers Virginia Power
Pratt & Whitney Pacific Scientific Kestrel Power
Textron Heinzinger electronic GmbH Dong Energy

5. Visual Solutions Markets & Major Accounts
Industry Process Control Transportation
ABB-Instrumentation Alcan Rolled Products ABB
Allen Bradley Amoco Bombardier
Carrier Corporation Bethlehem Steel British Rail
Corning Bayer Chrysler
Fuji Electronics BP Chemical Eaton
General Electric Champion International Ford
3M Dow Chemical GM
Honeywell DuPont Honda R & D
Hughes Foxboro Mazda
IBM General Mills Volvo
Johnson Controls Georgia Pacific
Motorola International Paper
Raytheon Kaiser Aluminum
TRW Mead Paper
Toshiba Mobil Chemical
United Technologies Potlatch
Westinghouse Weyerhaeuser

6. VisSim at ResMed
ResMed uses VisSim in all phases of product development for CPAP human respiratory aid
Models of controller
High fidelity models of human variation and pathology
Run pure simulations to tune controllers
Use VisSim/C-code to develop embedded system to run various virtual patients to test against final product
Use VisSim/Viewer to distribute VisSim simulation of CPAP and human for pre and post sales training

7. VSI Relationships
Mathsoft bundled VisSim/PE and LE low end VisSim products.
TI Third-Party partner. VisSim/ECD link is included in C2000 kits.
IBM (Telelogic) resells VisSim as “Continuous Modeler”. Tight co-simulation coupling with Statemate.

8. VisSim
Visual block diagram software for dynamic simulation and model-based embedded development.
Automatic production of high quality fixed point code
Exceptional dynamic and Hardware-in-loop simulation capabilities
Automatic programming of on-chip MCU peripherals
Intuitive, easy-to-use graphical user interface
Fast sample rates (> 500 kHz)
Low memory foot print (1.5k flash 200 bytes RAM)
Affordable

9. More Advantages… Royalty Free Redistributable Viewer
Allows you to send VisSim models to anyone. Models can be run but not altered.
Ease of use gives faster training, faster reuse of old projects.
Fast interpretive execution gives quick feedback on designs
Built-in C interpreter gives industry standard text based language
Allows specification of same .c init file in simulation as codegen target
Allows efficient code generation for state transition block: transition events appear in generated code exactly as they are entered.
Efficient code generation
Tight fixed point code
Usage of same variable names as in VisSim

10. Product Line VisSim Core Visual Simulation Tool
Interactively build, simulate and debug nonlinear models
Simulink Translator
State Transition block
Over 200 built-in blocks
Built-in C interpreter
Matlab interface
Royalty free redistributable Viewer

11. VisSim Add-ons
Real-Time - Allows up to 30 kHz closed loop sampling from VisSim on PC
C-Code - Generates ANSI C from diagram
Analyze - Frequency domain analysis of linearized non-linear subsystem
Fixed-point - Block set of bit true scaled integer operations for simulation and code generation

12. VisSim Add-ons Comm - Physical layer data communication
Optimize Pro - Generalized Reduced Gradient method of parameter optimization
Neural nets - Neural network construction and training package
Texas Instruments MSP430 (F1x, F2x, F4x, F5x) and C2000 (LF240x, F281x, F280x, F2802x/3x(Piccolo), F2833x (Delfino), C6713

13. VisSim Add-ons
Motion Block Set - Preconstructed block set for motion control
Includes AC Induction
Brush and brushless DC
Stepper motors
Controllers
Rotational and translational loads.

14. Some VisSim Examples
Simple damped harmonic – basic linear differential equation
Lorenz attractor – basic nonlinear diff. eq.
Interactive power spectral density
System ID
PID tuning
Embedded Mathcad worksheet

15. VisSim/Real-Time
Supports National Instruments and Measurement Computing boards
Analog, digital, thermocouple, counter, PWM, encoder
30 kHz close loop sampling straight from Windows/NT,2000, XP
Just place block and select “Run in Real-Time” from Simulations Properties dialog.

16. VisSim Plays Well with Others
OLE interface- allows inclusion of any OLE compliant software
VisSim - Mathcad OLE interface allows graphics plus data exchange
VisSim - Matlab Integration allows matrix data exchange and Matlab expression evaluation
Simulink Translator brings Simulink diagrams into VisSim workspace.

17. VisSim Custom Block API
MSVC Wizard creates project for custom block. Just drop in code.
API allows:
Menu positioning
Block & connector naming and data typing
Code generation
Simulation info on integration method, integration step, time step, current time etc.

18. VisSim Viewer Free redistributable run-time version of VisSim
Allows licensed users to freely distribute models to those who do not have VisSim development licenses
Easy way to share ideas, models and simulations
Supply proof-of-concept simulations to potential customers

19. VisSim/Embedded Controls Developer
Bundle of VisSim, C-Code, C2000 target, TI DMC block-set , fixed-point block set, TI Code Composer Studio plug-in
Supports F280x,F282x, F283x on-chip peripherals: ADC, ePWM, eCAN, QEP(encoder), event capture, UART, SPI, GPIO, I2C, interrupts, watch dog
VisSim/Motion motor simulator add-on

20. The VisSim RTOS VisSim provides a simple RTOS environment
Main low jitter (submicrosecond) control thread runs at time step as set in diagram “Simulation Properties…”
Unlimited number of preemptable (high jitter) background threads – (option in Compound block)
Jitter = variation in actual time step from specification
Schedule synchronous tasks from main thread
Efficient device drivers for on-chip peripherals
Handle interrupts directly in VisSim (option in Compound block)
Interrupt based soft queued I/O for serial, SPI and I2C

21. The Code gen Dialog From Tools > Code gen… Result file
Select Target
Device below on right
Include Compound names as comments
On-Chip RAM (no external RAM)
Target Flash (put code in flash memory)
Minimize RAM Usage (uses no numerical integration)
Make Callable from User App (generate 2 functions, init and rate, to be called from custom application or RTOS)
Include VisSim Communication Inteface (add PC communcation task to target. Boot waits for PC handshake before starting controller)

22. Simulate Control Subsystems
Minimize time spent in debug and test
Use high-level, pre-debugged blocks
Support simulation of controller at block level on PC
Allow mouse probe of every input and output to display values at any instant
Debug block-level simulation on PC

23. Digital control of DC-DC Buck Converter
Uses PID controlled PWM power modulation to maintain ADC sensed output voltage
Control setpoint through VisSim GUI
Interactive plot of controller contributions, set-point, and output
8 parallel converters run at 300 kHz sample rate

24. Hardware-in-the-Loop
Control runs on MCU, background monitor talks to PC over JTAG in background task
* Code automatically generated, compiled, linked, and downloaded
VisSim on PC
Control
Application
Code*
VisSim Interface block
downloads and monitors
code running on target
JTAG
JTAG
Plant
Under
Control
MCU I/O
(PWM,GPIO,
Analog, CAN,
encoder)
C2000 Peripherals
VisSim blocks for:
Virtual plant
Interactive gains
Plots of target response
C2000 MCU
JTAG in Real-Time Monitor mode allows interactive controller gain changes and plot of results
Rapid, diagram level, edit-compile-download-debug cycle (under 10 secs)
Test, debug, and validate the on-MCU control from VisSim using a targetInterface block
Calibrate controller gains on embedded target easily with VisSim interface

25. Codegen for 8 DC-DC Buck Converters
Uses 2.3K words flash
Uses 171 words RAM
Uses 80% of processor at 300KHz operation
Has 100 Hz background task to read temperature sensor on ADC line, and send status to LED bank via SPI
Code uses inline read/write of I/O registers
Retains VisSim variables as C variables

26. VisSim/ECD Benefits
Automatic code generation plus peripheral support results in quicker design time, fewer design iterations and faster time to market
Easy debug with JTAG HotLink + CPU Utilization feature means confidence that the resulting product meets design specifications
Self-documenting block diagrams make intellectual property easier to reuse 7

27. Embedded Target Support
Texas Instruments
MSP430 (F10xx, F2xx, F4xx, F5xx)
C2000 (LF2407, F2812, F280x, F2802x/3x/6x(Piccolo), F2833x (Defino), Concerto in development
C6713
QNX x86
Emulators and development boards from: TI, Spectrum Digital, Softbaugh, Olimex
XDS510, XDS100 (low cost), Blackhawk, Signum JTAGjet

28. TI Digital Motor Control Library
Core was written, tested and optimized by TI
Available in VisSim/ECD as easy-to-use block set
Block set coded in C++ to VisSim User Block API
Supports simulation mode (pure PC based simulation with 16-bit truncation effects)
Supports code generation mode

29. Conclusion
VisSim/Embedded Controls Developer is a valuable tool to accelerate embedded development
VisSim/ECD speeds embedded design of:
Fixed-point operations
On-chip peripheral usage
Motion control
Industrial closed-loop control
Digital power systems

30. Next Step
Visit And download a trial copy of VisSim/Embedded Controls Developer for TI C2000

31. Advantages vs Simulink
Cost for Embedded MCU Development
$10,000 for VisSim
$4,800(matlab&simulink)+7,500 RTW+Embedded Coder 5,000 + JTAG target link $2,000 + FixedPoint $2,000 + DSP blocks $1,000 + stateFlow $2,800 + stateFlow Coder = $25,000
Network floating license
VisSim = 2x = $20,000 (worldwide $20,000)
Simulink = 4x = $100,000 (worldwide $300,000)