9.2 Sensor Input

• int digital(int p)
• int analog(int p)
• 9.2.1 User Buttons and Knob
  • int stop_button()
  • int start_button()
  • void stop_press()
  • void start_press()
  • int knob()
• 9.2.2 Infrared Subsystem
  • int sony_init(1)
  • int sony_init(0)
  • int ir_data(int dummy)