Altera Nios II Embedded Evaluation Kit Cyclone III Edition, User Manual, Page: 38 / 80

Altera Corporation 5–2
July 2010 Nios II Embedded Evaluation Kit, Cyclone III Edition
Design Examples
Software and middleware licenses required to ship design:
■
MicroC/OS-II real time operating system from Micrium
1
For more information on how to obtain evaluation or shipping
licenses for the above refer to
“Licensing the IP” on page 1–11 .
The picture viewer application takes JPEG images or bitmaps stored on
the SD Card and displays them on the LCD Touch Panel. The Nios II CPU
decodes the images and stores the pixels in a video buffer in DDR
SDRAM. A Scatter-Gather DMA is used to transfer pixel data from the
video buffer to the video pipeline.
1
You can customize the picture viewer application's image
selection by adding your own images in to the folder on the SD-
Card entitled
images .
Operation
The Picture Viewer application displays a new picture on the LCD screen
after a settable delay (1,2,3,4,5,10,15,20 seconds). If decoding the image
takes longer than this delay time, then the image is displayed as soon as
it has been decoded. The image is scaled to optimally fit the LCD screen.
The operation of Picture Viewer application is explained below:
1. Power on the board by pressing the switch SW1 . You will see the
Application Selector menu on the LCD Touch Screen Display. See
Figure 5–1 .