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Microcontrollers Texas Instruments MSP430

Microcontrollers Texas Instruments MSP430. Daniel Michaud. What is a Microcontroller?. Computer on a Chip Microprocessor Input / Output RAM and/or ROM Signal Processing. Microcontrollers Are Everywhere. Automotive Manufacturing Robotics Medical Aeronautics Mobile Devices.

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Microcontrollers Texas Instruments MSP430

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  1. MicrocontrollersTexas Instruments MSP430

  2. Daniel Michaud

  3. What is a Microcontroller? Computer on a Chip Microprocessor Input / Output RAM and/or ROM Signal Processing

  4. Microcontrollers Are Everywhere • Automotive • Manufacturing • Robotics • Medical • Aeronautics • Mobile Devices

  5. ECE 251 – Microprocessors • Taught with a Freescale Microcontroller • MC68HC12 Development Board • $80 Per Board • $30 Covered By ECE Department • $50 Cost to Students

  6. Texas Instruments MSP430 • Popular TI Microcontroller • Low Cost ~ $20 • Portable • USB Interface • Same Relevant Features as the Freescale Product • Superior Development Software For Students

  7. Why Switch? Freescale • $80 Per Student • Aging RS232 Interface • CISC Architecture • Lots of instructions • Text Based Development Interface TI MSP430 • $20 Per Student • Commonplace USB Interface • RISC Architecture • Few Instructions • Windows Style Visual Development Interface

  8. Jesse snyder

  9. Development of Labs • Group redesigned labs 3-10 of ECE 251 for use with TI-MSP430 • Miguel completed labs 3, 7, 8 & 9 • We completed 4, 5, 6 & 10 • Also 2 practical exams • We revised Miguel’s labs extensively and wrote solutions • Made the labs ready for student use

  10. ECE 251 MSP430 Labs • Lab 3 – Introduction to the MSP430 • Lab 4 – Addressing Modes • Lab 5 – Subroutines and the Stack • Lab 6 – BCD Math • Lab 7 – Parallel I/O • Lab 8 – Interrupts • Lab 9 – Timer Module • Lab 10 – A/D Converter

  11. Working With Students • All inexperienced as TAs • Had to learn to communicate with students • Being clear about required assignments • Different perspective when writing labs • Had to learn to teach effectively

  12. Issues We Faced • No keyboard/console capability (Lab 4) • RISC vs. CISC architecture (Lab 6, Lab 10) • Clock inaccuracy (Lab 9) • Fewer I/O pins (Lab 10) • USB tool only worked on installed computer

  13. Solutions to Issues • Focused on what MSP430 does have • Provided subroutines to students • Experimented with different ways to output to 7-segment display • Considered ways to integrate labs

  14. What Didn’t Go So Well • Miscommunication • Meeting times • When assignments were due • Students had trouble being responsible for both microcontrollers

  15. What Went Well • Gained experience with the MSP430 which will be applied to design project • Students enjoyed flexibility of USB • Able to use material from the 68HC12 labs • Completed lab set if transition is made (course needs textbook)

  16. What Went Well (Cont.) • Interest from Rice University • More intuitive development tool • Invitation to present at TI developers conference session on Education • Working with Dr. Eads

  17. Jeremy Orban

  18. Future Plans • Design of a self-setting clock which makes use of the WWVB radio signal • Located in Ft. Collins • Transmits to entire US including Alaska and Hawaii • Makes use of several ECE concepts • Analog Design • Communications • Microcontrollers

  19. WWVB • Broadcast signal cycles every minute • Signal contains the following time information • Time • Date • Daylight savings • Leap year warning • Leap second warning

  20. Design Phase Overview TI-MSP430 Receiver/Amplifier Decoder Clock Display Extras, Time permitting Solar Power Generation Alarm Capabilities Local Temperature Sensing RF remote Temperature sensing

  21. Design Phase Details • Build receiver circuit for pulse width modulated 60kHz signal • Program MSP430 • Decode data signal • Set clock • Control clock time during normal operation • Allow for manual setting and time zone adjustment • Output to display

  22. Budget • Had no operating costs during semester • Approximate donation of $700 from Texas Instruments in microcontrollers and development kits • Still have $300 remaining in budget for design phase

  23. Acknowledgements • Thanks to Texas Instruments for the hardware donations • Miguel Morales • Help getting started • Gave assistance when needed • Dr. Bill Eads • Provided guidance and practical perspective • Burgers, brats, beer , fishing & kayaking

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