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[ts-7000] Re: SDCard and YAFFS2.

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Subject: [ts-7000] Re: SDCard and YAFFS2.
From: "Dunge2" <>
Date: Tue, 08 Sep 2009 13:25:46 -0000
mike ingle:
Busybox is enough for me too, that's actually what I have on the onboard flash 
along with a few libs. But how do you save data? I need to write things in the 
SD.

Matthew Harrell:
I don't quite understand what you meant with a "ramdisk overlay". You use ram 
memory and every X time you change the SD to RW, save the changes and rechange 
it to RO? That won't fix the problem if there's a power lost during this time. 
Or maybe I just don't know how it works.

My application have a database and every minutes it save to disk. There's also 
a list of other files who can get updated on user interaction. I think I could 
save everything on flash, and use the SD as read only for the executable only, 
but I might not have enough space on flash.

Also, what about YAFFS/JFFS? Is it only for flash memory? Can't do it on a SD 
card or what? My flash is currently mounted as YAFFS2, I think it comes like 
this from TS.

bburtan65:
Isn't that the default that comes from TS? A Debian-etch distribution on an 
ext3 filesystem. Anyway, if you have to redo a card, this guide helped me:
http://www.i-cuttingedge.com/blog/electronics/touch-panel-computer/partitioning-the-sd-card.html



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