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I’ve shown my review unit to my wife and every other nerd

I know, and the response has been the same each time. At

first they don’t know what it is. After I explain what it is and

what it can do, they simply can’t believe it. Typically, they leave

saying, “that is just too cool!” And it is.

As I mentioned earlier, the BUG exposes all of its function-

ality via a Java API. I have to confess that I’m not a big fan of

Java, but I understand that Java is a language many people

already know and almost anyone can learn. Java also is an

open standard, and Bug Labs, thankfully, is all about open

standards, as I discuss later in this article.

Once connected and configured, the BUG integrates seam-

lessly with the Eclipse IDE. After following a few simple

instructions, I was able to get Eclipse to recognize my BUG

and all of the installed modules. Eclipse then presented me

with a programming and hardware integration environment

that even I could work with, and I’m not a Java programmer.

There are lots of free source code examples available from the

Bug Labs support site. I was able to download and install a

calculator application, as well as a digital camera application

within minutes. The example code is well written, and the API

seems to be intuitive. The Bug Labs Web site has a lot of doc-

umentation for the API. I’ve never had a compelling reason to

become proficient in Java—until now. A nerd like me could

have a lot of fun with this device.

Bug Labs even provides a virtual BUG environment avail-

able from within Eclipse. The virtual environment allows you to

plug modules in to a simulated BUG and run Java-based appli-

cations directly on the virtual device. The virtual BUG behaves

almost exactly like a real BUG. Obviously, the GPS module, for

example, provides bogus data, but it’s still usable for software

development and testing. You don’t even have to own a BUG

in order to develop software for it.

As I’m not a Java programmer and I don’t use Eclipse, I was

very interested in other ways to interact with the BUG. Getting it

connected to my network wasn’t hard at all. The device’s base

unit doesn’t have Ethernet or Wi-Fi capability; it connects to the

network via USB. This meant that I had to upgrade the kernel

on my workstation to enable USB networking, which presents

itself as usb0 and acts just like any other network device. Note

that, like most USB devices, the usb0 device won’t be available

until the BUG is connected and has finished booting up.

Once the BUG is booted, it runs the TWM window manager.

Configuring my workstation to communicate with it was

trivial, though the documentation on Bug Labs Web site made

it a bit more complicated than necessary. The Web site indicated

that you needed to install ifplugd, which I think is a neat

program, but it’s not needed in this case. All you have to

do is configure the usb0 device with the right IP address

and netmask. What I did was:

ifconfig usb0 10.10.10.1 netmask 255.255.255.0

The BUG has 10.10.10.10 as its IP address and expects to

find its default gateway at 10.10.10.1. My workstation had to

be configured to forward network traffic:

echo 1 > /proc/sys/net/ipv4/ip_forward

After that, I was able to ssh into the device:

ssh [email protected]

Use root as the default password and change it to some-

thing more secure. You also should configure /etc/resolv.conf

on the BUG so that DNS works properly.

Once you’ve logged in, you will be presented with a

BusyBox prompt. You should feel free to take a look around.

Much of what you see will be familiar to you. The fun begins

when you start interacting with the application manager:

telnet localhost 8090

Typing

help

gives a list of commands that you can send to

the application manager. To spare you the suspense, I’ll tell

you that you can use the install command to download an

application from the Internet. For example:

install http://www.buglabs.net/application/download/43

This installs the BasicCalculator application, which is avail-

able from the Bug Labs Web site. By using the bundles com-

mand, you can determine which ID has been assigned to this

application. In my case, the application was given the ID of 30.

Then, you start the application using:

start 30

Shortly after issuing this command at the prompt, you will

see a four-function calculator on the touchscreen—assuming

you have the touchscreen module installed. I’ve found that

using my fingers to interact with the touchscreen isn’t extremely

accurate. Once I dug up a stylus from one of my PDAs, I was

able to use the BUG touchscreen with little or no effort.

Several applications are available from the Bug Labs Web

50 | august 2008 www.linuxjournal.com

FEATURE The BUG

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Cradlepoint Escape Spécifications Page 52

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