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<stbrtor>
Is there a particular allwinner chip that is more power efficient? It seems the newer ones are at a smaller feature-scale but also have more cores so it's not completely obvious to me
<libv>
stbrtor: the olimex guys were amazed at the difference in power draw between A10 and A20
<libv>
A20 was amazingly more powerefficient
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<stbrtor>
libv: thanks. I'll have to check out their post on that--quite surprising.
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<Seppoz>
is there a way to manually turn of lcd pwr
<Seppoz>
we just got new LCD model and aparently the init doesnt work properly
<Seppoz>
AT070TN92
<Seppoz>
i want to see if repowering the lcd works
<Seppoz>
how would i turn it off manually
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<ajeandet>
Seppoz: what about reset pin 44?
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<Seppoz>
lcd_power = port:PH07<1><0><default><1>
<Seppoz>
this is what i want to toggle
<Seppoz>
reset pin is hardwired
<Seppoz>
but when i soft reboot the board lcd works
<Seppoz>
so im sure if i can just repower it somehow or change the init procedure i can get it o work
<Seppoz>
can i somehow manually toogle lcd_power
<Seppoz>
i mean i cna ofcourse export it in the fex
<Seppoz>
but thats not what i want
<ajeandet>
Seppoz: It seems to be declared as GPIO: PH07<1><0><default><1>, so if you run linux just toggle it from user space.
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<Seppoz>
its not
<Seppoz>
you can not toggle it from userspace unless you declare it for the gpio backend
<Seppoz>
which ofcourse is possible but a pita
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<Inode>
Seppoz: what about physically disconnecting it and reattaching it, seeing as soft-control is too difficult?
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<TheLinuxBug>
Well this is new
<TheLinuxBug>
WARNING: at lib/list_debug.c:55 __list_del_entry+0xa0/0xd0()
<TheLinuxBug>
end trace eeb60012b2afb4f6
<TheLinuxBug>
then whole board frezes
<TheLinuxBug>
and ideas?
<TheLinuxBug>
hmm
<TheLinuxBug>
seems to be related to USB hub I am using maybe it went bad
<TheLinuxBug>
interesting
<TheLinuxBug>
yep
<TheLinuxBug>
plug in the usb hub and the whole board (BananaPi) freraks out and hard panics
<TheLinuxBug>
awesome
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<vpeter>
libv: Did I miss your adventure with in-circuit and how it went?
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<libv>
vpeter: well...
<libv>
they are not gpl violators, they did, in the end, respond, so their actions are pretty questionable though
<libv>
they fully depend on sunxi for everything
<libv>
and they definitely are $shitpi
<vpeter>
At least they got one point from many.
<libv>
i still need to attach pictures, upload the fex and a u-boot patch
<FlorianH>
Hello, does anybody has a way of monitoring the battery in order to shutdown properly the system on low energy ?
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<speakman>
A20 only supports 4-wire resistive touch screens. Have you guys ever used 5-wire resitive screens? Our dedicated buyer at the company says the 4-wire ones are getting rare these days.
<orly_owl>
yuck, why not use capacitive touch?
<speakman>
orly_owl: That's also an option, but it's different from market to market. In our case, resistive is to prefer in many cases.
<orly_owl>
hmm ok
<orly_owl>
there is also infrared touchscreens, i think kobos have that
<speakman>
We do Kiosks which sometimes is mounted in industrial environments where people use thick gloves.
<orly_owl>
consider infrared
<speakman>
Great tips, I'll forward it :)
<orly_owl>
(:
<speakman>
But have you ever got in touch with 5-wire resistive?
<orly_owl>
"A major benefit of such a system is that it can detect essentially any input including a finger, gloved finger, stylus or pen."
<speakman>
Sounds on the buyer guy it's more common than 4-wire, but I've never seen it before :D
<orly_owl>
Unlike capacitive touchscreens, infrared touchscreens do not require any patterning on the glass which increases durability and optical clarity of the overall system.