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VIPER / VIPER-Lite Embedded Linux Development Kit Quickstart Examples for VIPER / VIPER-Lite

Examples for VIPER / VIPER-Lite

The Development Kit includes an example program, which demonstrates how to use

the VIPER I/O board. This can be found in examples/c/ directory on the CD. It

demonstrates how to access and manipulate many of the capabilities provided by the

VIPER I/O board. These include functions to:

Drive LEDs, relays and the sounder. •

•

Carry out operations using switches provided on the board.

Although this program is very simple, it can be used as a building block to write your

own embedded applications using the VIPER I/O board.

You can also use the utilities in the arcom-utils package as a reference while developing

your application. This package and its source can be found in packages/arcom-utils/

directory on the CD. The utilities and the functionality they provide are:

exar-XR16C2852-control, which configures an EXAR XR16C2852 UART. This chip

provides COM4 and COM5 on the VIPER board.

devmem2, which is a simple program that demonstrates how to read from, and

write to, any location in memory.

rtc-alarm, which provides a simple example of how to setup the RTC to generate

an alarm at a particular time.

pxaregs, a simple utility to read and modify the registers on a PXA255 XScale

processor.

viper-sleep.sh, which provides an example script to put a VIPER / VIPER-Lite

board into sleep mode.

isp1161-powerdown, which controls the power state of an isp1161 USB controller.

mtd-unlock and mtd-lock, which lock or unlock an mtd device respectively.

i2c-regs, which read from and write to the registers on devices on the I²C bus.

Further information on these utilities can be found in the README file in the package. A

MAKEFILE is provided to assist in building them from the sources.