Human interface on STK600:
- Led 0 is on when USB line is in IDLE mode, and off in SUSPEND mode
- Led 1 blinks when USB host has checked and enabled vendor interface
- Led 2 is on when loopback is running
Setup for STK600:
- LEDS connector is connected to PORTA
- SWITCHES are connected to PORTB
- Warning! The AREF0 jumper must be removed because AREF0 connected on PORTA0 overrides led 0.
- Warning! The AREF1 jumper must be removed because AREF1 connected on PORTB0 overrides switch 0.