User`s manual

High Performance Low Cost Embedded Systems
Chapter 3 Running Linux
3.1 Software Applications and Configurations in Linux Qtopia
Note: Qtopia 2.2.0 is developed by Qt based on Qt/Embedded 2.3 graphic interface. After Qtopia
2.2.0, Qt hasn’t released any new PDA versioned graphic interface. The latest Qtopia is for cell
phones. But it is still developing Qt/Embedded libaries. For most of our released systems, we have
installed Linux + Qtopia 2.2.0 by default. It has various useful utilities. When you get our system, just
power it on and you will be able to experience its utilities. If your display is VGA, you need a USB
mouse connected to your board’s USB host.
In addition, our system supports both a USB mouse and a touch screen simultaneously. You can
connect both to your board. It supports a USB mouse and keyboard plug and play.
If you use a 3.5 inch LCD, you will see the following screenshot after system boots up:
3.1.1 Calibrating Touch Screen
Note: if you cannot calibrate your screen by following the steps below, please connect a USB
mouse to your board, select “recalibrate” in “setting” to recalibrate your screen.
You will see the calibration interface under the following two situations:
1. After you follow the steps to install the Qtopia system and reboot the system, you will see the
screenshot below. Follow the prompts on the screen to click on them and then click on the “+” signals.
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