User manual

AVR32930

32163A-AVR-03/11

6 Example applications

Several examples are available in ASF that can be downloaded from the Atmel

website ASF section: http://asf.atmel.no. Each example has the full source code with

documentation, as well as ready-made binaries for getting started quickly. The

examples can be compiled using either the GCC or IAR compilers.

6.1 Preprogrammed firmware

The Atmel AT32UC3A3256 that is mounted on the Atmel UC3-A3 Xplained board is

preprogrammed with a USB boot loader and default demonstration firmware.

The preprogrammed firmware in the AT32UC3A3256 is a demonstration of the Atmel

QTouch

button and the Atmel QTouch slider. Touching the SW1 QTouch button will

cause LED1 to light up. Moving a finger along the QTouch slider will cause either

LED2 or LED3 to light up, depending on the position of the finger.

The delay at the start of the application is due to an SDRAM check, which is

performed each time the kit is powered up. This has been removed in the updated

firmware, described in Section 6.2.

6.2 Updated default firmware

This application note includes a software package that contains the source code of a

demo application. The demo application demonstrates the QTouch functionality of the

UC3-A3 Xplained board similar to the pre-programmed default firmware but with two

differences:

1) When powered up, the board will not perform the SDRAM check any more

since this has been removed from the application.

2) If the slider is touched, the intensity of LED3 will be adjusted according to the

touch position on the slider, and LED2 will light up when the slider is touched.