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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