-----Original Message-----
From: gumstix-users-admin@lists.sourceforge.net [mailto:gumstix-users-admin@lists.sourceforge.net] On Behalf Of Klemmack, Johann
Sent: Wednesday, March 10, 2004 9:12 AM
To: gumstix-users@lists.sourceforge.net
Subject: RE: [Gumstix-users] CF/PCMCIA

My alternative for providing support for CF wouldn't require that the port itself be on the board itself, just that the 50-odd pins be readily exposed.  I haven't gotten a Gumstix board yet, and the best pictures are still fairly small, so I don't know how feasible it would be to add a compact pin header. It seems like you already have about 20 pins exposed for SD/MMC, I2C, and the UARTS, so perhaps you have a compact pin header designed that could be extended.  Then the task becomes designing a daughterboard, and I have absolutely no problem with that.

[WGK >] The CF/PCMCIA interface requires bus access which we did not pinout.
 
Are there any 802.11 solutions that would work with 10baseT implementations you're considering?  The only ones I know of are things like the Linksys Wireless bridge and that would add too much in terms of power and bulk.
 
[WGK >] We're concentrating on ethernet right now; but have seen some standalone serial-WiFi boxes that may be stop-gaps.
[WGK >]  I haven't tried any yet. 
 
To my knowledge, Bluetooth doesn't support the concept of "access points", so you have to be in range of the bluetooth host.  With WiFi, you can have multiple access points that your device connects to as you move it around.  Please correct me if I'm wrong.  I'm a big advocate of 802.11 because it has a higher range and is a still growing technology.  There have been some that say death-bell for Bluetooth has been sounded.
 
[WGK >] I would say that, now that Apple and many cell-phone vendors support bluetooth, to sound the death-knell would be premature.
[WGK >] It is steadily gaining market share as the cost of implementation is driven down.
 
I've done some serious hunting for SDIO linux wireless drivers, but there doesn't seem to be anyone even looking into it.  Sychip seems to be pretty close-mouthed about their implementation, so it seems fair to assume that no SD WiFi linux drivers will be available in the foreseeable future.
 
Thanks again,
    Johann
-----Original Message-----
From: gumstix-users-admin@lists.sourceforge.net [mailto:gumstix-users-admin@lists.sourceforge.net] On Behalf Of Gordon Kruberg
Sent: Wednesday, March 10, 2004 10:19 AM
To: gumstix-users@lists.sourceforge.net
Subject: RE: [Gumstix-users] CF/PCMCIA

Johann,
 
we are loooking at 2 alternatives to get to 10baseT:  SPI and USB client.
There are known solutions for both and I'm deciding.
 
see klsi.com and the TINI SPI-Ethernet interface.
 
the reason we didn't do it on board is for space and power: the CF slot is almost bigger than the board.  we elected to go with Bluetooth instead.  It's just not ready for release yet.
 
 
gordon
-----Original Message-----
From: gumstix-users-admin@lists.sourceforge.net [mailto:gumstix-users-admin@lists.sourceforge.net] On Behalf Of Klemmack, Johann
Sent: Wednesday, March 10, 2004 7:13 AM
To: gumstix-users@lists.sourceforge.net
Subject: [Gumstix-users] CF/PCMCIA

Gordon,
 
My main intent is to support wireless in some form, ideally 802.11, with a Gumstix borad.  That being said, since there are currently no Linux supported SDIO wireless WLAN cards, and USB is out, I've been looking at alternatives.
 
It looks like the PXA255 architecture supports CompactFlash/PCMCIA with no additional hardware needed (aside from the port).  Was your decision to limit this functionality due to space concerns (obviously the CF port won't fit on the Gumstix board), or for other technical reasons?
 
Would it be feasible to create a Gumsitx with those ports exposed, or a daugher board to support the approprate pins?
 
For my application, the power-draw isn't a big concern, but wireless range and overall system cost is a big factor.  That eliminates (perhaps) bluetooth and other wireless solutions like "wireless RS2332" (see http://www.abacom-tech.com/downloads.htm).
 
I really like the (elsewise) low power draw of the Gumstix board, the fact that its a SBC with such an itty bitty form factor, and you're adding linux support from the get-go.
 
Thanks,
    Johann