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EMPR - Embedded Systems Project

University of York, Computer Science BEng/MEng Stage 2 EMPR (Embedded Systems Project) Part 1

Team Members: Jacob Allen & Kia Alderson

Contents

1. Mini Projects

1.1. Mini Project 1

LED and Serial communication project. Must fulfil the following:

  • Print: "Starting count" on the terminal screen.
  • Display the 4-bit (0-15) number on the LEDs with each number displayed for about 1 second under the control of timer-based interrupts.
  • Simultaneously display the 0-15 count on the terminal screen in decimal, hexadecimal and binary.
  • Print: "Finished count" on the terminal screen.

1.2. Mini Project 2

I2C, LCD and Keypad project. Must fulfil the following:

  • Print: the number I2C devices connected, followed by a pause of 1 second.
  • Display "Hello World" then "Hello [newline] world" on the LCD with a pause of 1 second and a clear LCD screen after each of the two print operations.
  • Display characters on the LCD as they are typed on the keypad.
  • Optional extra: Mini calculator.

1.3. Mini Project 3

ADC, DAC and PWM project. Must fulfil the following:

  • Read and print out an analogue voltage via the ADC (Max v3.3).
  • Generate a sine wave using the DAC, the amplitude and frequency should be varied over time (every 10 seconds).
  • Mirror an input sine wave using the ADC to read and the DAC to write.
  • Output a waveform on the PWM, using single edge mode and cycling through the full range of changes in pulse width 5 times. A single cycle from minimum pulse width to maximum should take 5 seconds and should be displayed on the oscilloscope. It should use some form of timer on the MCU to change the pulse width at regular intervals, not a delay loop.
  • Optionally: Build a distance measuring device, using a Sharp GP2Y0A21YK0F infra-red range sensor. Printing the sensors output voltage and/or measured distance to the LCD screen.

2. Main Project

See EMPR2 repository.

3. Libraries

A set of libraries created from the code of the Mini Projects to simplify the development of the Main Project.

  • Constants - Generic useful constants
  • Common - Common requirements
  • Utilities - Generic useful tools
  • Serial - Tools for interfacing with a computer via UART
  • Keypad - Tools for working with the keypad on the expansion board via I2C
  • LCD - Tools for writing to the LCD on the expansion board via I2C
  • I2C - Tools for interfacing with I2C
  • DAC - Tools for controlling the DAC on chip
  • ADC - Tools for controlling the ADC on chip

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University of York, Computer Science BEng/MEng Stage 2 EMPR (Embedded Systems Project) Part 1

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