Coud someone be so kind to describe how to initialize this chip?
I guess it has INT/WAKE gpio pin? Am I right?
How to find out having working touch in Android and Windows it ? There is
no at the moment driver in Linux for this touch, so I have not "right point
of start" for finding out gpio pin.
What is my current experience on Chuwi Vi10 with dualboot Android and
Windows + ArchLinux:
I have tried to detect gpio INT/WAKE pin using sysfs and i2cdetect -r 4.
I have Android and Win with this touch, exploring
Android: registered on i2c-4 0x48.
In Linux nothing!!!! On this i2c bus via 0x48! This possibly means
that chip should be initialized to be detected\provide responce on i2c
bus, probably gpio pin for INT\WAKE.
Looking through all 1-512 (the last one available for export through
sysfs) + i2cdetect -r 4 under linux makes me completely confused -
changing direction to out of gpio[396,430,438,492] makes i2cdetect
discovers device on i2c-4, 0x48 and at the same time changinf value
(level) to 1 of gpio 473 and gpio 475 againg makes chip visible for
i2cdetect.
At the same time gpios 391-393 - just makes screen black, but do not
power off device.
Main question - which one of them is for INT/WAKE of TS?
Regards and thanks in advance,
Serge Kolotylo.
On Saturday, February 20, 2016 at 7:53:20 PM UTC, [email protected] wrote:
>
> Hi all,
> Could please somebody be so kind to describe or reference to datasheet of
> chipone85xx touchscreen controller.
> AFAIK icn83xx is implemented in linux sunxi.
> All I have discovered:
> http://www.chiponeic.com/index.php/website/products/18
> But what is the logic?
> How to init the chip? Chip is on i2c 0x48 address.
> How to read x,y coordinates?
> Which registers does it have and by what addresses?
> By the link above tx,rx,osc por - what do they mean?
> PS: I am trying to make it working icn85xx at baytrail arch with vanilla
> kernel.
> Thanks in advance,
> Serge Kolotylo.
>
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