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MP3 player on PC using PIC controller via USB.

MP3 player on PC using PIC controller via USB. Supervisor: Dmitry Sokolik Performed by: Yoav Gershoni Shachar Faigenblat. Project Overview. Playing MP3 files that located in the PC Controlling the song selection using the PIC. Establish a USB based connection for control.

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MP3 player on PC using PIC controller via USB.

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  1. MP3 player on PC using PIC controller via USB. Supervisor: Dmitry Sokolik Performed by: Yoav Gershoni Shachar Faigenblat

  2. Project Overview • Playing MP3 files that located in the PC • Controlling the song selection using the PIC. • Establish a USB based connection for control. • Enable friendly user interface (LCD, switches).

  3. Block diagram PIC board

  4. Project Specification • Components: • PIC 18F452 evaluation board. • DLP 245. • Power supply: • 5v for the evaluation board, PIC and USB bus. • Interfaces: • USB bus between the PIC board and the PC

  5. Software Architecture • PC Main function COM Port functions USB Driver and Bus

  6. Software Architecture • PIC Main function LCD Driver functions DLP Driver functions LCD Display USB Bus

  7. Software Development Tools • PIC: • MCC18 compiler on MPLAB IDE. • PC: • Code in C, with Visual Studio compiler. • USB protocol: • USB Inspector.

  8. DLP 245 – USB Device • Provides parallel interface to USB bus. • Easy to handle. • No USB protocol knowledge required. • PC Driver are Virtual COM Port.

  9. DLP 245 – PIC connection PIC DLP 245

  10. DLP 245 – PIC connection

  11. LCD • 2x16 Characters. • LCD controller provide easy handling. • Parallel bus to LCD controller.

  12. LCD Pinout

  13. LCD BUS Waveform Since the LCD has only 4 bits the E line has to toggle twice for each Data/command transaction.

  14. LCD Commands

  15. LCD Initialization proccess It appears that the initialization process of the LCD module isn't strait forward as one would think.

  16. Conclusions • Every thing works this time!! • Datasheets don’t always have all the information needed to make things work. (LCD) • HW doesn’t always work as you intended it would (Philips). • The Internet provides a useful knowledge base, with the experience of many skilled people.

  17. The End

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