Sharp SL-5500 File Manager Guide Manual de usuario descargar pdf (Pagina 42)

CHAPTER 11. USE 11.3. GLOBAL NETWORKING

should display some devices, but at least usb0. If necessary, you may run

ifup usb0

(if

usb0

is already there, no need

for it). You can then modify the IP stuff with either the GUI of

your front-end (X11, GPE, . . . ), or by appending

iface usb0 inet static

pre-up modprobe g_ether

address 192.168.129.201

netmask 255.255.255.0

gateway 192.168.129.1

post-down rmmod g_ether

for example, to your /etc/network/interfaces.

11.3.3 With Bluetooth

Angstr

om uses the standard

2.6

kernel’s Bluetooth modules (which were derived from

http://

www.bluez.org/

). Userspace commands used to control/access Bluetooth hardware are

hciconfig

hcitool

rfcomm

l2ping

and other ones. (It is also implemented in GUIs.) Before establishing

a Bluetooth connection with another computer, either for

rfcomm

pand

, it is necessary to pair

the two. Bluetooth uses a PIN, or password, for incoming pairing requests. This one is set in the

/etc/bluetooth/pin ﬁle, and for outgoing requests by the utility “passkey-agent.”

There are two ways to make a network using Bluetooth: one is to use point-to-point protocol

(PPP) over the

rfcomm

(serial-like link); the other is to use

PAN

. This is a very brief summary to give

you an understanding of the processes involved:

1. PPP

over

rfcomm

was previously popular with PDAs like Palms and some WindowsMo-

bile/PocketPC/WinCE devices. It is not so efﬁcient, but is useful if you are connecting the

device to a Windows computer. On the

Angstr

om device you need to create the appropriate

ﬁles in /etc/ppp and then trigger the PPP connection using the command

pppd call XXX

(XXX being the proﬁle); this then results in a ppp0 device appearing.

If the called device is correctly set up, the

ppp0

device will end up with the correct IP address

and default route, and the local DNS resolver will probably also be set correctly, otherwise use

ifconfig ppp0

route add default gw x.x.x.x

to tweak settings,

2. PAN/PAND is best for making a Linux-to-Linux connection. Simply run

pand -listen

on one end, and

Note that issuing ifup usb0 would do nothing, in this particular case: it would not duplicate a device!

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Sharp SL-5500 File Manager Guide Manual de usuario Pagina 42

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