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Tone Matrix music box

Tone Matrix music box. ECE 477 Senior Design - Group 17. Presenter: Jun Jun Peh. Block Diagram. Software design consideration. Timer: Interrupts generated are fast enough for pushbuttons and rotary switch Speed is coherent with button pressed Frequently check for battery status

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Tone Matrix music box

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  1. Tone Matrix music box ECE 477 Senior Design - Group 17 Presenter: Jun Jun Peh

  2. Block Diagram

  3. Software design consideration • Timer: • Interrupts generated are fast enough for pushbuttons and rotary switch • Speed is coherent with button pressed • Frequently check for battery status • Interrupt driven • MIDI to be specified at 31.25 Kbit/s

  4. Software design consideration • 2 SPIs: • 3 LED driver chips • DAC, SD card, LCD • UART & USART: • MIDI output • Fuel gauge • ADC: • Use to sample data from 3-axes accelerometer

  5. Software design consideration • Memory: • SD card allocates extra memory tosave and load • Initialization: • PIC18 uC, SPI,UART, ATD

  6. Software flowchart

  7. Hierarchy (Receiver)

  8. Hierarchy (Transmitter)

  9. Questions?

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