EMBEDDED SYSTEM DESIGN. George E Hadley, Timothy Rogers, and David G Meyer 2018, Images Property of their Respective Owners

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1 EMBEDDED SYSTEM DESIGN George E Hadley, Timothy Rogers, and David G Meyer 2018, Images Property of their Respective Owners

2 LEARNING OUTCOMES A student who successfully fulfills the course requirements will have demonstrated: 1. an ability to program a microcontroller to perform various tasks 2. an ability to interface a microcontroller to various devices 3. an ability to effectively utilize microcontroller peripherals 4. an ability to design and implement a microcontroller-based embedded system 2

3 LEARNING OBJECTIVES Form a project team consisting of 2-4 students Choose a project idea and write a proposal Design the hardware and software necessary to realize the project idea Package the finished system Demonstrate the project s functionality to the course staff Write a formal report documenting the embedded system design process 3

4 MINI-PROJECT DESCRIPTION Embedded system design based on STM32F0 Discovery Kit Basic requirement is to design a stand-alone ( turn-key ) product that makes good use of the processor s computational / interfacing resources Should make meaningful / effective use of at least four of the microcontroller s on-chip peripherals covered in the lecture notes (ATD, DAC, I2C, I2S, USART, SPI, TIM, PWM) Done in teams of 2-4 students (self-selected) 4

5 MINI-PROJECT PROCEDURES Read the description posted on the Mini-Project page of the course website Form a team (maximum size 4 students) and submit a project proposal, following link provided on Mini-Project page if you don t have a team, respond to the RFP to request placement on the free agent list Approved projects/teams will be posted on the Mini-Project Team Status page The deadline for Mini-Project proposal submission is Friday, April 6 5

6 MINI-PROJECT PROCEDURES Assign team duties/responsibilities as well as leadership roles based on information provided in the Team Responsibilities chart Note the myriad bonus credit opportunities: early completion (up to 0.5%) custom PCB (up to 2%) printed poster* (up to 1%) YouTube demo video (up to 1%) Spark Challenge participation (1%) *required for Spark Challenge presentation 6

7 MINI-PROJECT PROCEDURES Each team member must maintain an Activity Log that details their contributions these are included in the Word Skeleton File for the written report (available on the Mini-Project page) Projects can be demonstrated any time the week of April 23 the absolute deadline is NOON on Friday, April 27 Blackboard submission of report, code, and bonus credit files (e.g., poster with embedded link to YouTube video) must be completed no later than Monday, April 30, at NOON 7

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9 1 Filter Design Transfer Functions of Filters The Aqualizer Polycarbonate Case Design H(jω) Bass Mid Treble Hz 250Hz 2,000Hz 20,000Hz Band-Pass Low-Pass High-Pass Filter Type Low-Pass Band-Pass High-Pass Frequency (Hz) Vin Vin Vin Schematic 6.2k 0.1u 20mH 2.2u 0.1u Vout Vout Vout Aqualizer is in action. Software Design RTI interrupt TIM interrupt (every 1 ms) Processor (every ms) Boot Up Increment tens No counter Was UV Is tenths pushbutton pressed? flag set? Does tens No No Yes counter == 10? Yes Set push button flag Perform ATD No Yes conversion Is UV flag set? Set tenths flag Update LED PWM Yes Electronics 0 Update Pump PWM Toggle UV LED lights

10 Flappy Bits Everett Berry, Allen Chien, Jacob Stevens, Kyle Woodworth / Flappy Bits Overview Block Diagram The Flascii Bird is a real life simulation of the game flappy bird. The player is asked to wear two specially designed gloves that have accelerometers embedded. The game is entirely controlled by movements of the player and the data collected from the accelerometers is sent wirelessly to the HCS12 microcontroller. The Papilio One FPGA is responsible for outputting VGA graphical interface to the monitor. Component List HCS12 Microcontroller Papilio One FPGA Xbee 1mW Trace Antenna Series 1 ADXL 335 Accelerometer Printed Circuit Boards Left to Right: Allen, Everett, Jacob, and Kyle PCB Design Accelerometer Data Xbee Transmitter Xbee Receiver Low Pass Filter ADC HCS12 Microcontroller Unit PWM TIM SPI Game Logic Papilio One FPGA VGA Papilio One 500K Buzzer Monitor Output The Papilio One is an open-source development platform. It utilities the power of FPGA through implementation VGA driver with SPI communication. Features: 4Mbit SPI Flash Memory Two-Channel USB Connection for JTAG and Serial Communications 48 I/O lines

11 Raulmaha Digital Synthesizer Andrew Pawling, Aimad Md Uslim, John Sterrett, Chris Pierson Project Design Goals The creation of a digital synthesizer that integrates the following features: Mono-phonic, single octave keyboard range synthesizer Analog volume and distortion control Variety of audio waveforms (sine, triangle, saw tooth, and square) Accelerometer-based pitch bend ability

12 Making embedded hardware great again, your Mini-Project mission will be

13 Questions?