Human interface on UC3C_EK:
- PWR led is on when power present
- 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 CDC interface
- Led 2 is on when the COM is open by USB Host
- Led 3 is on during data transfer
- Switch 0 launches the performance test
1.8.5