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Rhythm Jogger

Rhythm Jogger. Kai Hsu Kevin Nichols Peter Liang. Presentaion Outline. Current Status Design issues. Design Issues . Midi Parser/Sequencer Midi File Format Multiple tracks Delta Time (variable length) Running Status Midi Messages Voice Messages Sysex Messages. Downloading Midi.

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Rhythm Jogger

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  1. Rhythm Jogger Kai Hsu Kevin Nichols Peter Liang

  2. Presentaion Outline • Current Status • Design issues

  3. Design Issues • Midi Parser/Sequencer • Midi File Format • Multiple tracks • Delta Time (variable length) • Running Status • Midi Messages • Voice Messages • Sysex Messages

  4. Downloading Midi • Combine all tracks into one • Parse out the unnecessary bytes • Convert it into hex bytes • Use VB tool to upload it to extern. ram • Software agent on the microcontroller to send the midi messages real-time.

  5. Example: 0x00 0x99 0x2a 0x64 0x80 0x41 0x23 0x64 0x00 delta time 0x99 status byte: channel 9 note on 0x2a note 0x2a 0x64 velocity 0x80 0x41 delta time 0x23 note 0x23 0x64 velocity

  6. Other Issues • Limited Timers • Software Timers • Multiple Initializations • Music playing Real-time constraint

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