User manual

Atmel AT02657: XMEGA-E5 Xplained Software User Guide [APPLICATION NOTE]
42085A−AVR−04/2013
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1.2 User interface
The Atmel XMEGA-E5 Xplained kit is powered through the USB connector. The demo application is controlled with the
mechanical rotary encoder (SW1). The activity monitoring is done through the LEDs and the OLED display.
Figure 1-1. Hardware resources used in the XMEGA-E5 Xplained demo.
Figure 1-2. Information on the OLED display for the XMEGA-E5 Xplained demo.
CPU load
S am p lin g
Light
0.5s
1.3 USB feature
When powering the kit through the USB connector, the Atmel XMEGA-E5 Xplained enumerates as a USB
Communication Device Class (CDC). Actually this is the AT32UC3B1256 device, the board controller which does this
USB-support by acting as a USART to USB CDC gateway.
USB powered
USB device connector
Power supply LED
Light sensor
J100 closed
SW0.
SW103
Quadrature Encoder
selection switch
SW1
Display OLED
(128 x 32)
CPU activity bargraph
Sampling activity
Light value bargraph
Quadrature
Encoder
Current sampling rate