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Resources: Hardware and Software

Get valuable resources for developing projects with microcontrollers, including tips for using micros, information on TI MSP430 and Atmel ATMEGA microcontrollers, other microcontroller options, DSPs, FPGAs, wireless radios, board layout software, and sensor challenges.

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Resources: Hardware and Software

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  1. Resources:Hardware and Software Senior Design – Fall 2011

  2. Microcontrollers • Useful for analog-digital conversions, timing, counting pulses, serial communications, PWM, digital I/O, and much more! • Code can be interrupt driven • Possible applications • Perform an A-D conversion on a signal and send that data to a PC • Control an LCD display • Receive information from a RF ID reader • Interpret signals from a numeric keypad *Pictures from http://www.electronic-kits-and-projects.com

  3. Tips for using Micros • Program in C • Read all the documentation for the part!!!! • Code in small steps • Best first step is to make an LED blink • Refer to code examples for help • For digital I/O • Be sure voltages are within permissible range • Check if microcontroller can sink or source enough current • Development boards are a great way to get your hardware running fast!

  4. TI MSP430 • Ultra low power Micro • Free samples from TI (we have a university agreement and can get samples and programmers) • Free IDE based on eclipse with integrated debugging • Free GCC compiler • Many RTOS solutions available • Hardware debugging makes finding problems in code easier • Some development boards have integrated wireless ZigBee support eZ430-RF2500 • Many Examples • Very easy to use USB programmers/Debuggers • Ultra low power Micro • Free samples from TI (we have a university agreement and can get samples and programmers) • Free IDE based on eclipse with integrated debugging • Free GCC compiler • Many RTOS solutions available • Hardware debugging makes finding problems in code easier • Some development boards have integrated wireless ZigBee support eZ430-RF2500 • Many Examples • Very easy to use USB programmers/Debuggers *Picture from http://www.ti.com/

  5. ATMEL ATMEGA Microcontrollers • Many Different microcontrollers – most commonly used for projects are MEGA168/MEGA128 • Powerful user community = Arduino project • Many open source tools, hardware and libraries, entire tool chain runs on Linux/Windows/Mac • Several simple serial boot loaders to load programs, programmers are easy to build • Software USB support • More limited hardware debugging *Picture from http://www.atmel.com/

  6. Microchip PICs • Available in lab: PIC16F877A • Many other types available to order • Two excellent resources • PIC data sheet • PICC Compiler Help • Receive two PICs for free • Disadvantage: Closed compiler/toolchain • Newer PIC’s with crossbar can be difficult to setup pin functions *Picture from http://ww1.microchip.com/downloads/en/DeviceDoc/39582b.pdf

  7. Other Microcontrollers • BASIC Stamp • Programmed using BASIC • Can be used when high performance is not necessary • ARM (LPC, TI, etc) • Very Advanced toolchain, very powerful microcontrollers with a lot of features • Hard to program the hardware • Cypress PSoC • GUI based programming software • Development Kits Available *Pictures from http://www.basicx.com/ and http://www.ti.com/

  8. DSPs • TI TMS320C54x • Same DSPs as used in ECE 420 • Programmable in assembly Simulink or C • Useful for audio processing • TI TMS320C6713 • Floating point DSP • Useful for image and video processing

  9. National Instruments CVS • Real time vision processing system • programmed in Labview *Images from http://www.ni.com/vision/cvs.htm

  10. FPGAs • We have several new NI FPGA boards • Useful when very high speed calculations are needed • Power hungry • Consider using a microcontroller first • Great for projects which require a lot of recursive or parallel calculations

  11. XBee Radios • Low-power wireless sensor networks • Zigbee/IEEE 802.15.4 compliant • ISM 2.4 GHz wireless • Serial interface (9600 to 115200) • 10 uA sleep current • 100 feet indoor range (may vary) • Advanced features include toggling pins on remote radio, Over the air programming of features, and many integrated functions in the radio hardware (Series 2)

  12. Other Radio Chips • Lynx • Simple wireless data transmitters and receivers • Available in lab • Wifi and Bluetooth • Serial interface to microcontrollers • One starting point for products www.sparkfun.com * Pictures from http://www.linxtechnologies.com/ and www.sparkfun.com

  13. Board Layout Software • Eagle • Installed on lab computers • Free download for board size < 4x3in x 2 layer • Tutorial on class drive • Orcad • Installed on lab computers • More complicated, lots of options * Picture from Kieran Levin

  14. Sensors! Interface between:

  15. Sensor Challenges:

  16. Datasheets! • Find them from manufacture or supplier websites. • Without a datasheet it is hard to design around an unknown part • Some Good places to look • Datasheet Repositories • www.alldatasheet.com • www.questlink.com • www.tds-net.com

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