Chameleon-AVR Nurve Networks, Chameleon-AVR Datasheet - Page 220
Chameleon-AVR
Manufacturer Part Number
Chameleon-AVR
Description
MCU, MPU & DSP Development Tools AVR8 & PROPELLER DEV SYSTEM (SBC)
Manufacturer
Nurve Networks
Datasheet
1.CHAMELEON-AVR.pdf
(268 pages)
Specifications of Chameleon-AVR
Processor To Be Evaluated
AVR 328P
Data Bus Width
8 bit
Interface Type
USB, VGA, PS/2, I2C, ISP, SPI
Operating Supply Voltage
3.3 V, 5 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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© 2009 NURVE NETWORKS LLC “Exploring the Chameleon AVR 8-Bit”
Controls Required:
None.
Technical Overview
The demo simply uses both the NTSC and VGA terminal API functions to print “Hello World” on both screens and scroll.
Here’s just the main() / loop() excerpt since this demo is nothing more than a copy of the NTSC and VGA versions
respectively and merged.
The demo simply uses the same basic commands, but send them to both the NTSC and VGA monitors.
Summary
This demo shows how easy it is to get both NTSC and VGA terminal like text output going on the Chameleon.
28.1.6 VGA Star Field Demo
The default2 VGA driver isn’t as impressive as the NTSC driver. In fact, its pretty boring. Its good for displaying text and
acting as a terminal output, but that’s about it. However, with a little ingenuity we can make it do some cool things! This
little demo, draw stars on the VGA screen on the last display line, this causes the screen to scroll and presto – animated
star field! Then on top of the star field a little character based ship is drawn. Figure 28.6 shows the demo in action.
Figure 28.6 – VGA terminal text graphics demo – Star Field.
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