search

lvgl / lv_port_esp32

LVGL ported to ESP32 including various display and touchpad drivers
MIT License
1.05k stars 440 forks source link

Feature request: EVE3 BT81X commands #199

Closed YTvW closed 4 years ago

YTvW commented 4 years ago

Would it be possible to add EVE3 specific commands to the driver. Since the EVE3 has on board RAM that is not accessible with the current commands.

C47D commented 4 years ago

Hi,

The EVE driver was contributed by a user, as I don't have that device. I will try to take a look at it and see what can we do to add the commands you've requested.

If you have that device it would be great if you could test the changes. Is there any particular command that you want to add?

davidjade commented 4 years ago

I ported the EVE2 driver to LVGL but I don't have an EVE3. What differences does it have to access this other RAM? Is it not like the EVE2 where everything is memory mapped?

davidjade commented 4 years ago

@YTvW One other question I might add: what in the EVE3 command set would benefit the LVGL driver? Access to more RAM won't actually help LVGL, as LVGL treats the FT81x as a dumb bitmap display device.

If it's not apparent already, the existing esp32 LVGL driver for FT81x displays really does not use any part of the EVE commands set to do anything. It simply sets EVE up to display one full screen bitmap that then allows LVGL to write bits directly into it, which then show up on the screen because the underlying bitmap data has changed. As far as LVGL is concerned, the FT81x is just a chunk of memory that it writes bitmap data into.

Yes the FT81x driver has code for all the other EVE2 commands but they are not used at all by LVGL - I left them in case someone wants to try and create a hybrid GUI, i.e. use a mix of native EVE graphics and LVGL graphics on a partitioned or split screen. Any sort of code like that would need to do all the lower-level EVE commands separate from using LVGL (and probably also make significant changes to the FT81x LVGL driver too).

stale[bot] commented 4 years ago

This issue or pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

C47D commented 4 years ago

Reopen if there's some feedback.