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Audio Visualization Device Software Presentation

This document outlines the system requirements for the audio visualization device software designed by Keenan Haines and Nicole Samuelson. It includes specifications for the core MCU (9S12DP512) and details on bus frequency (24MHz), memory requirements (10k bytes Flash EEPROM, 2k bytes EEPROM, 2k bytes RAM), and kernel (MicroC/OS-II). The document describes task priorities for system initialization, audio sampling, user interface, and display management, along with their execution times and CPU load percentages. The overall CPU load is efficient, averaging 10.2%.

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Audio Visualization Device Software Presentation

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  1. Audio Visualization DeviceSoftware Presentation Keenan Haines Nicole Samuelson

  2. General System Requirements • MCU: 9S12DP512 • Bus Frequency: 24MHz • Memory Requirements: • 10k bytes Flash EEPROM • 2k bytes EEPROM • 2k bytes RAM • Kernel: MicroC/OS-II • Tick Period: 1ms

  3. Task Priorities • Start Task • Sampling Task • User Interface Task • Display Task

  4. Start Task • Initializes the system • Creates the other tasks • Displays user prompt • Priority: 4 • Period: once (at start-up) • Execution Time: ~ 1 sec

  5. Sampling Task • Sample incoming audio • Determines volume level • Stores data for display • Priority: 5 • Period: 1ms • Execution Time: 200us

  6. User Interface Task • Receives user preferences • Priority: 6 • Period: 20ms(min) • Execution Time: 2ms

  7. Display Task • Cycles through animations • Operates LED drivers • Generates MIDI commands • Priority: 7 • Period: 20ms • Execution Time: 2ms(max)

  8. CPU Load Lmax = 200us + 2ms + 2ms 1ms 20ms 20ms Lmax = 40% Lavg = 10.2%

  9. Modules

  10. Data Flow Diagrams

  11. Questions or Comments?

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