Team 3 Piano Glove

1. Team 3Piano Glove Software Design Considerations Carolyn McMican Daniel Stein Jonathan Kuntzman Mihir Shah

2. Project Specific Success Criteria • An ability to quantify the position of the glove relative to the processing unit. • An ability to combine finger press data and glove position to determine which virtual key has been pressed. • An ability to utilize SpeakJet from GPIOs to produce various sounds. • An ability to collect analog data from force and stretch sensors, digitize it, and correctly format packets for wireless transmission. • An ability to detect different pressure levels to control volume.

3. Software Design Considerations

4. Design Constraints • Memory Constraints • Data storage is limited to one package on either glove or base and a few miscellaneous variables • Time Constraints • Software should run fast enough to provide illusion of instantaneous sound from finger press

5. Utilization of Integrated Peripherals • Analog to Digital • Will be used for sampling the sensors on the glove • Serial Peripheral Interface • Will be used for printing messages to the lcd screen • Timer • Will be used to generate interrupts for time based actions • Will be used to time ping duration

6. Glove Software • Check for finger presses on a set time interval • If finger pressed check stretch sensor • Format data package for easy decoding • Transmit the data package • Software will be interrupt driven

7. Glove Pseudo-Code Main(){ initializeReg(); while(true){ /*Wait for timer interrupts*/ } } TimerServiceRoutine(){ data[]=sampleATD(); formatData(data); transmitData(data); }

8. Base Software • Ping the glove on a set time interval • Time duration of ping • Convert time to distance to glove • If a data package is received • Check if the data package is valid • Calculate notes pressed based on data package and distance • Use Speakjet to produce appropriate sounds • Software will be formatted as a polling loop

9. Base Pseudo-Code Main(){ intializeReg(); while(true){ /*Timer interrupts for generating pings.*/ if(haveData()){ data[]=recieveData(); mapToKeys(data); produceNotes(data); } } } TimerSeriveRoutine(){ time=pingGlove(); Distance=convert(time); Return(distance); }

10. Questions?