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<slapin>
hi, all!
<slapin>
have anybody had experience making silead touch screen work?
<slapin>
I tried to use gsl-firmware tools to extract formware from Android module and used that file, but all I get is "Initialization error status 0x0"
<slapin>
chip is detected properly
<slapin>
0xA0880000
<slapin>
the tablet is unnamed reference A13 tablet (all it has on cover is MID, all the rest and inside android is the same as in all other reference tablets"
<slapin>
but UART is not available anywhere obvious
<slapin>
no markings on PCB too, neither of vendor nor for UART
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<libv>
slapin: have you matched the motherboard with another one in the wiki?
<libv>
while in software support they should only have probably touch and wifi different, it still pays to get these things documented
<libv>
so that you have something to fall back to in future, and so that you have a place to document your troubles and your solutions now
<slapin>
yeah, tried it but found none like it
<libv>
then start a new page please
<libv>
i know, it's an ordeal of an hour or so
<libv>
but it will pay you back in time
<slapin>
sounds like good idea, but do we need another generic page like Q8 one?
<libv>
there will be some strings on the board
<slapin>
btw, the tablet sounds like fully electrically compatible with Q8
<libv>
and you can add it to the Q8_A13 category
<libv>
yeah, there's a whole range of those
<libv>
different panels, touch or wifi
<libv>
and slightly different layout, and perhaps different memory timing
<slapin>
well, looks like it has very bad NAND timeing so that's why it costs $20
<libv>
it still pays to document this, as while it is generic, the devil is in the details
<slapin>
Linux makes it roar, almost on C.H.I.P. level
<libv>
:)
<libv>
explain though
<libv>
is the mainline driver unable to handle it?
<libv>
or does it just trash content, which is normal as there is different randomization between drivers
<slapin>
well, I need to make touch work... otherwise I'll be very sad...
<slapin>
well, with Linux the prfrormance is good, like on C.H.I.P., but in Android it is very bad, VERY
<libv>
ah, makes it fast
<libv>
righto
<slapin>
it pauses for 10 seconds each time it accesses NAND....
<libv>
and yet we still bought these things
<slapin>
I do because they are cheap and very good hobby material
<libv>
which reminds me, i have had a A23 based q8 earmarked for my soon 3y old
<libv>
yes, which is why i have so many allwinner devices as well
<libv>
and via devices...
<libv>
*sigh*
<slapin>
I *think* manufacturers just failed with NAND timings, or chips themselves are faulty
<slapin>
I will experiment with that as time comes
<slapin>
I want to make one into PocketCHIP replacement, will attach keyboard
<slapin>
need to make tiny little terminal for coding in unusual places
<slapin>
btw you can tune Android 6 to work properly on these tiny tablets, but who cares these days...
<libv>
nobody in here, as else we would not be here
<libv>
and tablets are pretty much dead anyway
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<aloo_shu>
oh I love em still
<aloo_shu>
getting them 2nd hand, or from the dumpster even
<aloo_shu>
but don't have the necessary lab to make progress native-linux wise
<aloo_shu>
I'm pretty energy limited - off grid, small no-budget solar setup - so I'm glad enough if I can run something linuxish on top of the initialized android kernel & drivers, and be online for hours where my laptop would consume the energy in 1h
<libv>
where in the world are you?
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<aloo_shu>
just saying, don't call tablets dead, I'm cherishing my lil collection, with a few sunxis among them - this one is sun8i A33 afaik,and I got a few half dead q8's, too
<aloo_shu>
me? canaries, spain
<libv>
well, nobody is buying them for decent money new anymore
<aloo_shu>
living kind of a 3rd world life in a 1st world country
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<wens>
slapin: I did. you might want to try the tool on all silead related blobs
<libv>
and the flood of Q8 devices is somewhat stemmed
<aloo_shu>
yeah, need to be big brands, galaxy tab
<wens>
the lcd on my a33 q8 is somewhat burnt through
<libv>
slapin/wens: if it is not already, please document what one has to go through to get the silead blobs working
<libv>
there's no point in anyone having to go through such a thing aimlessly, tiwce
<libv>
twice even
<aloo_shu>
here on canaries, you're still seeing windows full of them, q8, q88, - there is an entire market segment of hindu stores catering to the mainly british desire to come back from their hols with some rolex, camera, tablet, whatever bargain in their bags
<wens>
aloo_shu: is it really a bargain?
<aloo_shu>
but they'll probably make a puja gratitude offering once the old crap is sold, and won't re-order, you might be right about that part
<aloo_shu>
wens: it may and it may not. there are really tax advantages with regards to UK, also grey exports of asia produced brand licensed ware, but it is just as much about the *idea* of a bargain - place is exotic, so ppl are ready to believe exotic ideas
<wens>
grey exports lol
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<aloo_shu>
if you're good at negotiating with hindus and set your mind on it, you could maybe free some trader here of 50 Q8's at $10 apiece, and he'll even marry your daughter to you :)
<wens>
I don't think that would be worth the plane ticket lol
<aloo_shu>
but then, you can likely get the same from ali express
<wens>
AFAIK it's getting hard to find Q8 tablets on ali
<wens>
but then again, I use taobao instead of aliexpress :p
<aloo_shu>
I'm using neither, I'm asking my guests to go through their cupbuards and drawers for old gear, and I ocassionally check dumpsters
<aloo_shu>
other ppl who are much more pro than me at dumpster diving, do know me as the guy who's getting stuff to work sometimes, and isn't charging anything, so I may end up with gifts from that side, too
<aloo_shu>
but then, special gear like a USB to UART adapter is pretty hard to come by in my no-budget approach, I'm waiting for years, have at least 2 promised, but none in my hands
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<aloo_shu>
I wonder if I couldn't possibly go tablet to tablet, UART to UART, no USB in the middle
<aloo_shu>
would be an entirely new discipline, hacking sunxi boards only using sunxi boards :)
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<wens>
I suppose you could
<DonkeyHotei>
or any other device with a ttl uart
<DonkeyHotei>
if someone is throwing out an old wrt54g for example
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<aloo_shu>
so far, I'd be happy to be informed about any preferrably untethered root exploit on this one, says board.platform astar, product.board exdroid
<wens>
wasn't there the allwinner root backdoor?
<libv>
aloo_shu: we tend to go by the new device howto, and start with dumping .fex and taking board pictures and identifying how to get uart
<aloo_shu>
sure, just changing/modifying uboot, booting custom kernels isn't a priority for me so far, that's how I'm mainly just lurking for the moment, learning passively
<aloo_shu>
made by ococci, 'mid' appearing in build host
<aloo_shu>
what's a .fex dump, can I make one untethered & unrooted locally from term?, and what is the allwinner root backdoor?
<libv>
aloo_shu: /topic says: "did you try looking at our wiki?"
<aloo_shu>
ok, back to lurking. I did, I know that I'm off topic
<libv>
it's not off topic, it is just mostly answered on the wiki already
<libv>
and there's no point in rehashing this, as it would be quite wasteful and quite inaccurate
* rr123
thinks putting 16MB SPI on opi-zero-lts is a good idea so openwrt can be run
<rr123>
otherwise 256MB for debian/armbian, even with zram, still is a little tight
<slapin>
also cheaper than proper NAND these days
<rr123>
seriously, who put their OS on NAND still?
<slapin>
16MB is no good for modern OpenWRT, I'd go for 32
<hellsenberg>
uefi surely did wonders to flash chips
<slapin>
NAND gone crappy route and proper SLCs are very expensive
<rr123>
slapin: depends on what you load, 16MB is good enough for most cases, for the "core" ipks
<slapin>
I have bought a lot of NANDs and have huge 128MB NAND collection from old projects, they work perfectly fine on sunxis
<rr123>
indeed openwrt will no longer support 4M/32M sytem
<slapin>
wow, touch works now
* rr123
trying to get mjpg-streamer working on zero-lts
<slapin>
I found different .ko on android (not one which is loaded) and that firmware works
<hellsenberg>
nand has a problem though, replacing the chips isn't for the faint of heart
<rr123>
16MB SPI is about 1.4USD, what about 32MB
<hellsenberg>
i'm still not sure why the TSOP56 I replaced somehow works fine
<slapin>
but now I need to swap x/y, can driver do it?
<aloo_shu>
wens: so far, I'm having permission denied to /proc/sunxi_debug/sunxi_debug, but the file exists, and it might be different from adb, thanks a million for clueing me :)
<slapin>
there is fex option in my tablet fex for that...
<slapin>
wens: is there option to swap touch x/y?
* rr123
just checked and found cubieboard is still alive, it has been a while
<wens>
slapin: generic touchscreen properties
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<rr123>
took 3 minutes to get mjpg_streamer build on h2+ with 256MB and run it smoothly, that's impressive, now let's say how stable this is
<rr123>
s/say/see/
<slapin>
btw, since I was out of stuff for so long - how is video decoding live, especially in browser? encoding is interesting too... would be nice to watch youtube on A13...
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<slapin>
is cedrus still a thing?
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<slapin>
thanks a lot people, now touch works perfectly, all I need is to properly attach keyboard
<slapin>
I think wifi will not disagree if I will attach keyboard to wifi port, will it?