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From: PovTruffe on 15 Jun 2010 06:12
Hi,

Say you want to design an embedded system that any laptop can
connect to without any Wifi network available. Is that possible ?

Just a point to point communications would be required, not really
a full featured wireless network. A laptop would just sent a few
simple commands to the embedded system.

Maybe BlueTooth would be more appropriate for this application but
this would require adding a costly dongle to most laptops.

Or Zigbee ?


From: D Yuniskis on 15 Jun 2010 10:07
PovTruffe wrote:
> Hi,
>
> Say you want to design an embedded system that any laptop can
> connect to without any Wifi network available. Is that possible ?
>
> Just a point to point communications would be required, not really
> a full featured wireless network. A laptop would just sent a few
> simple commands to the embedded system.
>
> Maybe BlueTooth would be more appropriate for this application but
> this would require adding a costly dongle to most laptops.
>
> Or Zigbee ?

Um, serial port? (IrDA if you insist on "wireless")
From: John Larkin on 15 Jun 2010 10:18
On Tue, 15 Jun 2010 12:12:34 +0200, "PovTruffe"
<PovTache(a)gaga.invalid> wrote:

>Hi,
>
>Say you want to design an embedded system that any laptop can
>connect to without any Wifi network available. Is that possible ?
>
>Just a point to point communications would be required, not really
>a full featured wireless network. A laptop would just sent a few
>simple commands to the embedded system.
>
>Maybe BlueTooth would be more appropriate for this application but
>this would require adding a costly dongle to most laptops.
>
>Or Zigbee ?
>

Take a look at this stuff...

http://www.lantronix.com/device-networking/wireless.html

Maybe they have appnotes or whatever on direct connection.

John

From: PovTruffe on 15 Jun 2010 10:17
"D Yuniskis" <not.going.to.be(a)seen.com> a �crit :
>
> Um, serial port? (IrDA if you insist on "wireless")

It has to be wireless for this application. As far as I know not so many
laptops are equiped with IrDa where the vast majority are wifi enabled.


From: D Yuniskis on 15 Jun 2010 10:38
PovTruffe wrote:
> "D Yuniskis" <not.going.to.be(a)seen.com> a �crit :
>> Um, serial port? (IrDA if you insist on "wireless")
>
> It has to be wireless for this application. As far as I know not so many
> laptops are equiped with IrDa where the vast majority are wifi enabled.

Use an IrDA dongle -- via a serial port, parallel port, USB serial,
etc.

If you want to use WiFi, then configure for an ad hoc network
(assuming your embedded system wants to bear the cost of WiFi)
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