Human interface on XMEGA-A3BU Xplained:
- 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 MSC interface
- Green LED close to USB connector is on when reading from the USB mass Storage interface
- Red LED close to USB connector is on when writing from the USB mass Storage interface
1.8.5