Comments on: Fonera SD Card Hack http://www.larsen-b.com/Article/262.html Titanium Exposé Thu, 20 Nov 2008 16:16:36 +0000 http://wordpress.org/?v=2.6 By: computmaxer http://www.larsen-b.com/Article/262.html#comment-6665 computmaxer Mon, 07 Jul 2008 15:44:42 +0000 #comment-6665 Hey nice article. Ya'll should come check out the fonera-hacking community at: www.fonerahacks.com Hey nice article. Ya’ll should come check out the fonera-hacking community at:
http://www.fonerahacks.com

]]> By: admin http://www.larsen-b.com/Article/262.html#comment-3021 admin Tue, 06 May 2008 20:39:32 +0000 #comment-3021 Your english is worst than mine !!! The caps act as filtering the lines here. The caps degrade the signals, so I removed them. In fact, with the caps, the reader doesn't work really well due to bad signal quality. Bye Your english is worst than mine !!!

The caps act as filtering the lines here. The caps degrade the signals, so I removed them. In fact, with the caps, the reader doesn’t work really well due to bad signal quality.

Bye

]]> By: sapopopopo http://www.larsen-b.com/Article/262.html#comment-2962 sapopopopo Mon, 05 May 2008 23:11:28 +0000 #comment-2962 Hi. Someone tell me knows what I lose removing the 4 capacitors? Seems none. So that reason have to be welded them? Thanks. Hi.
Someone tell me knows what I lose removing the 4 capacitors? Seems none. So that reason have to be welded them?
Thanks.

]]> By: anno http://www.larsen-b.com/Article/262.html#comment-66 anno Tue, 14 Aug 2007 10:27:40 +0000 #comment-66 Hi! <br /> <br /> Nice hack indeed. Just killed my HAMA 35 in 1 USB Card reader to extract SD card slot :-) <br /> Builds nicely and from its size it can easily be integrated in original fonera case. <br /> Although I encounter a problem with my 2GB SD card: <br /> <pre> mmc : MMC Driver for Fonera Version 2.5 (050507) -- '2B|!2B' (john@phrozen.org) mmc : Card Found mmc : card in op mode mmc : SIZE : 231, nMUL : 6, COUNT : 3900, NAME : SD mmc : Card Initialised mmc : The inserted card has a capacity of 511180800 Bytes mmc : adding disk mmc: mmc1 mmc : Card was Found </pre> <br /> 511180800 bytes are 487,5MB and not ~2GB as expected. <br /> Any idea on this? Is the interface not supporting more memory? <br /> <br /> Thanx <br /> Anno. Hi!

Nice hack indeed. Just killed my HAMA 35 in 1 USB Card reader to extract SD card slot :-)

Builds nicely and from its size it can easily be integrated in original fonera case.

Although I encounter a problem with my 2GB SD card:

mmc : MMC Driver for Fonera Version 2.5 (050507) -- '2B|!2B' (john@phrozen.org)
mmc : Card Found
mmc : card in op mode
mmc : SIZE : 231, nMUL : 6, COUNT : 3900, NAME : SD
mmc : Card Initialised
mmc : The inserted card has a capacity of 511180800 Bytes
mmc : adding disk
mmc: mmc1
mmc : Card was Found

511180800 bytes are 487,5MB and not ~2GB as expected.

Any idea on this? Is the interface not supporting more memory?

Thanx

Anno.

]]> By: Anonymous http://www.larsen-b.com/Article/262.html#comment-60 Anonymous Wed, 13 Jun 2007 16:43:47 +0000 #comment-60 Some important lines from the boot sequence.  What does the last one say? <br /> <pre> Linux version 2.6.21.1 (ubuntu@OpenWrt-DevEnv) (gcc version 4.1.2) #14 Wed Jun 13 00:49:03 EDT 2007 CPU revision is: 00019064 Determined physical RAM map: memory: 01000000 @ 00000000 (usable) Initrd not found or empty - disabling initrd Built 1 zonelists.  Total pages: 4064 Kernel command line: console=ttyS0,9600 rootfstype=squashfs,jffs2 init=/etc/preinit Primary instruction cache 16kB, physically tagged, 4-way, linesize 16 bytes. Primary data cache 16kB, 4-way, linesize 16 bytes. Synthesized TLB refill handler (20 instructions). Synthesized TLB load handler fastpath (32 instructions). Synthesized TLB store handler fastpath (32 instructions). Synthesized TLB modify handler fastpath (31 instructions). PID hash table entries: 64 (order: 6, 256 bytes) Using 92.000 MHz high precision timer. </pre> Some important lines from the boot sequence.  What does the last one say?

Linux version 2.6.21.1 (ubuntu@OpenWrt-DevEnv) (gcc version 4.1.2) #14 Wed Jun 13 00:49:03 EDT 2007
CPU revision is: 00019064
Determined physical RAM map:
 memory: 01000000 @ 00000000 (usable)
Initrd not found or empty - disabling initrd
Built 1 zonelists.  Total pages: 4064
Kernel command line: console=ttyS0,9600 rootfstype=squashfs,jffs2 init=/etc/preinit
Primary instruction cache 16kB, physically tagged, 4-way, linesize 16 bytes.
Primary data cache 16kB, 4-way, linesize 16 bytes.
Synthesized TLB refill handler (20 instructions).
Synthesized TLB load handler fastpath (32 instructions).
Synthesized TLB store handler fastpath (32 instructions).
Synthesized TLB modify handler fastpath (31 instructions).
PID hash table entries: 64 (order: 6, 256 bytes)
Using 92.000 MHz high precision timer.
]]> By: Michel Memeteau http://www.larsen-b.com/Article/262.html#comment-45 Michel Memeteau Tue, 30 Nov 1999 00:00:00 +0000 #comment-45 <p>Great article , Weird for the transfer speed, as I saw industrial MMC readers that achieves 2 MB/s</p> Great article , Weird for the transfer speed, as I saw industrial MMC readers that achieves 2 MB/s

]]> By: Jkx http://www.larsen-b.com/Article/262.html#comment-46 Jkx Tue, 30 Nov 1999 00:00:00 +0000 #comment-46 <p>The main issue of this type of hack, is that is use some bit banging (read/write bit with the CPU), but no IRQ or other fancy stuff can be used. And another stuff, the CPU usually use a "slow" rate for IO. ( 25Mhz on a fonera I think).</p> <p>=> So this eat quite a lot of CPU, and isn't really effective, but really enought for common use. (This is not a filer ! ;)</p> The main issue of this type of hack, is that is use some bit banging (read/write bit with the CPU), but no IRQ or other fancy stuff can be used. And another stuff, the CPU usually use a "slow" rate for IO. ( 25Mhz on a fonera I think).

=> So this eat quite a lot of CPU, and isn’t really effective, but really enought for common use. (This is not a filer ! ;)

]]> By: awdark http://www.larsen-b.com/Article/262.html#comment-47 awdark Tue, 30 Nov 1999 00:00:00 +0000 #comment-47 <p>Neat hack! This might be a really stupid question... but what can you do with it after you put in a SD card? Can you say for example use it to host a webpage or something?</p> Neat hack!
This might be a really stupid question… but what can you do with it after you put in a SD card?
Can you say for example use it to host a webpage or something?

]]> By: Jkx http://www.larsen-b.com/Article/262.html#comment-48 Jkx Tue, 30 Nov 1999 00:00:00 +0000 #comment-48 <p>You can write some stuff in (some log, scan results..) and read .. yes you can use it for a little web server or FTP.</p> You can write some stuff in (some log, scan results..) and read .. yes you can use it for a little web server or http://FTP.

]]> By: johnnyrico http://www.larsen-b.com/Article/262.html#comment-49 johnnyrico Tue, 30 Nov 1999 00:00:00 +0000 #comment-49 <p>solid work, I'm looking forward to seeing SD card support implemented in dd-wrt for the fonera, will definitely follow this guide to solder on my homemade SDcard plug,the 5.25" floppy cable method(you know, the easy cheapskate methos :) )</p> <p>just one question: on removing the capacitators: what did you mean by the clk not being very clear? I mean, what does clk mean? srry if the questions sound dumb but I have never had the chance to learn decet electronics, I know how to solder and all, but that's it.</p> <p>but again: solid work ;)</p> solid work, I’m looking forward to seeing SD card support implemented in dd-wrt for the fonera, will definitely follow this guide to solder on my homemade SDcard plug,the 5.25" floppy cable method(you know, the easy cheapskate methos :) )

just one question: on removing the capacitators: what did you mean by the clk not being very clear? I mean, what does clk mean?
srry if the questions sound dumb but I have never had the chance to learn decet electronics, I know how to solder and all, but that’s it.

but again: solid work ;)

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