This is an example that demonstration how to control some devices via USB interface.The PC software program with delphi.
- CPU PIC18F4550 with full speed USB interface at 48MHz.
- USB 2.0 compliance
- Use on-chip USB driver
- Control 1 stepping motor.
- MPLAB C18 for firmware at USB devices side.
- Delphi 6 for PC Host software.
Control stepping motor via USB interface - [Link]