Hi Guys,

All is clear now, thanks for your interest and for the information provided.

Yes, I could disable the slideshow via 
"CONFIG_EXAMPLES_LVGLDEMO_WIDGETS_SLIDESHOW".

I think a mouse input could be enough for this board.

BR,
Murat

On 2021/06/25 19:17:27, Gustavo Henrique Nihei <ghni...@gmail.com> wrote: 
> Hi Murat,
> 
> Just to add to Alan's answer, this is actually the Slideshow mode for the
> LVGL Widgets example.
> You may disable it via "CONFIG_EXAMPLES_LVGLDEMO_WIDGETS_SLIDESHOW".
> Then the example application will just wait for the user input.
> 
> Best regards,
> Gustavo.
> 
> On Fri, Jun 25, 2021 at 4:12 PM Alan Carvalho de Assis <acas...@gmail.com>
> wrote:
> 
> > Hi Murat,
> >
> > The LVGL moving up and down it not a bug, it is by design.
> >
> > LVGL guys did it as as way to show all the screen exactly for board
> > that doesn't have a touchscreen to interact with it. Otherwise you
> > should think it was crashed/freeze, don't you? :-)
> >
> > Hmm, maybe we can use a BackBerry TouchPad as mouse.
> >
> > Matias, do you think it is possible? Probably we will need to
> > implement a driver to make it behavior like a mouse to be used on
> > NuttX.
> >
> > BR,
> >
> > Alan
> >
> > On 6/25/21, murat tologlu <mtolo...@hotmail.com> wrote:
> > > Dear Gustavo,
> > >
> > > Thanks you very much for your interested and for the informations you've
> > > provided.
> > >
> > > I wasn't aware that the esp-wrover-kit doesn't have any touch keypad, I
> > am
> > > very much surprised about that. That's why I talked about an improper
> > lvgl
> > > operation, I was expecting to interact with the display as I do normally
> > > with many other boards :) I think this is a weakness of the
> > esp-wrover-kit,
> > > do we have to use a separate keypad in case a user entry is required?
> > >
> > > On the other hand the display is not stable, it moves up and down as
> > seen on
> > > old-time TVs, it is a synch problem, it can be related to frame rate, I
> > will
> > > try  overclocking the SPI bus as you've suggested.
> > >
> > > Best regards,
> > > Murat
> > >
> > > On 2021/06/25 12:13:40, Gustavo Henrique Nihei <ghni...@gmail.com>
> > wrote:
> > >> Hi Murat,
> > >>
> > >> I've just watched your video after you made it public.
> > >> It seems to be working as expected for the "esp32-wrover-kit:lvgl"
> > >> configuration.
> > >> What exactly do you mean by frequency mismatch? I can see some stripes
> > in
> > >> the video, but I believe this is probably due to the video recording.
> > >> If the issue is regarding the framerate, you may tweak the configuration
> > >> in
> > >> order to increase it (e.g. overclocking the SPI bus via
> > >> CONFIG_ESP32_LCD_OVERCLOCK)
> > >> Also, the ESP-WROVER-KIT does not provide a touch sensor.
> > >>
> > >> Best regards,
> > >> Gustavo.
> > >>
> > >> On Fri, Jun 25, 2021 at 1:05 AM murat tologlu <mtolo...@hotmail.com>
> > >> wrote:
> > >>
> > >> > Hi,
> > >> >
> > >> > Brand new ESP-WROVER-KIT V4.1, loaded with latest nuttx and apps,
> > >> > without
> > >> > any jumper modification
> > >> >
> > >> > https://youtu.be/17vXIOFpU5c
> > >> >
> > >> > Seems like a frequency mismatch, touch input doesn't work as well..
> > >> > what
> > >> > can be the reason?
> > >> >
> > >>
> > >>
> > >> --
> > >> Gustavo Henrique Nihei
> > >>
> > >
> >
> 
> 
> -- 
> Gustavo Henrique Nihei
> 

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