Can I follow-up on this question? I am looking for something similar,
but I have one additional requirement. I am looking for something
with WDS support and 802.11s support (MeshPoint) along with all of the
listed requirements below...
I'd also prefer a solution with two antennas for diversity. I believe
I cannot use a USB device to host a MP, but if I can, that would be
the best answer, since I could simply integrate a USB device.
Any recommendations?
Thanks in advance.
Charlie
On May 26, 2009, at 4:36 AM, Mike Rapoport wrote:
Jean-Pierre Poulin wrote:
Hello,
May I obtain your recommendation on a Linux + ARM friendly WiFi
module or chipset?
There's wi2wi SIP module with Marvell 8686. It is supported by
libertas driver.
The solution we’re looking for must have the following features:
- WiFi features: 802.11b + 802.11g with WPA & WEP encryption.
- Driver: Binary driver built for Linux+ARM9 *or* Driver source
buildable for Linux 2.6.28.2
- Electronic Interface: SDIO (strongly) preferred, then parallel
bus, then SPI, and least preferred: USB
- Physical interface: SMD-mounting (strongly) preferred, then SD-
card, then USB stick
- Size: Smaller the better (especially on ‘thickness’), but not
critical.
- Power efficiency: Irrelevant / Not critical.
- Cost: Extremely critical!!
- Range: The greater the better, but low-cost is much more important.
- Antenna considerations: Small built-in chip antenna preferred.
External whip antenna a minus.
Working backwards on this from the currently available drivers
(we’re building our Linux image ontop OpenWRT for the $2.80 NXP
LPC313x), the following drivers are ‘easily accessible’ in OpenWRT…
but we have yet to find the low-cost manufacturers that can provide
the physical WiFi solution itself…
kmod-libertas............................ Marvell 88W8015 Wireless
Driver
kmod-mac80211..................... Linux 802.11 Wireless Networking
Stack
kmod-mac80211-hwsim........................ mac80211 HW simulation
device
kmod-p54-common................................. Prism54 Drivers
(COMMON)
kmod-p54-usb....................................... Prism54 Drivers
(USB)
kmod-rt2500-usb............. Ralink Drivers for RT2x00 cards
(RT2500 USB)
kmod-rt2800-usb............. Ralink Drivers for RT2x00 cards
(RT2870 USB)
kmod-rt2x00-lib.................... Ralink Drivers for RT2x00 cards
(LIB)
kmod-rt2x00-usb.................... Ralink Drivers for RT2x00 cards
(USB)
kmod-rt73-usb................. Ralink Drivers for RT2x00 cards
(RT73 USB)
kmod-zd1211rw....................................... Zydas ZD1211
support
In addition, searching through the list of drivers at Linux
Wireless, we were impressed by the comprehensive selection but – as
device prices are not listed – it is very difficult to ascertain
which inexpensive WiFi solution can run on our board.
Finally, as the cost of the total WiFi solution is so important,
our ‘upper range’ for cost is about $11 per interface (1K qty), as
our ‘plan B’ is simply to insert one of the many $13 USB-WiFi
interface (such as those found on eBay) inside the product
enclosure. Some questions:
Q1: Given our above-stated needs… which do you recommend: the
‘module approach’, the ‘chipset approach’ or the ‘insert consumer
product’ approach?
Q2: What is the ‘most famous’ / ‘most supported’ Linux/ARM-friendly
low-cost WiFi solution currently available?
Q3: Can you recommend some low-cost (Taiwanese / Chinese) WiFi
manufacturers that supplies low-cost Linux-compatible solutions?
Q4: For reference, what do you think is the cost of the ‘absolute
lowest cost’ WiFi solution currently available?
Many thanks for any hint / suggestion you can provide!
Jean-Pierre
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Sincerely yours,
Mike.
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