Bsp/improve_s3-lcd-ev-board

[Lzw655]

Checklist for new Board Support package or Component

• Component contains License
• Component contains README.md
• Project README.md updated
• Component contains idf_component.yml file with url field defined
• Component was added to CI upload job
• New files were added to CI build job
• Optional: Component contains unit tests
• CI passing

Change description

• Configurations:
  • Support to set number of frame buffers for RGB
  • Support to use bounce-buffer for RGB
  • Support to change the minimum delay time of LVGL task
  • Support to change the stack size of LVGL task
  • Support to enable anti-tearing function simply by using multiple buffers
• RGB Anti-tearing:
  • Optimize direct mode (increase FPS from 14 to 17, tested by display_lvgl_demos)
  • Use triple-buffer in full-refresh mode (increase FPS from 13 to 16, tested by display_lvgl_demos)

Also, update README and sdkconfig of display_lvgl_demos example.

[Lzw655]

@espzav @tore-espressif Hi, I add some new configurations and improve anti-tearing scheme for esp32-s3-lcd-ev-board BSP. They can achieve higher performance than before. PTAL, thank you very much.

[tore-espressif]

@Lzw655 thanks for the PR. I haven't tried it on HW yet, though

@suda-morris could you please have a look too?

[espzav]

@Lzw655 thank you for this review. I tried on HW with 800x480 and it is working good. But I don't understand other settings of the RGB (buffers, tearing etc.). When I tried change settings, in all combination was really worst that default settings (in FPS). Other LGTM.

Next note, it will be nice to add RGB LCD support into LVGL port. I would like do it in future, but I must to more understand before it.

[Lzw655]

@Lzw655 thank you for this review. I tried on HW with 800x480 and it is working good. But I don't understand other settings of the RGB (buffers, tearing etc.). When I tried change settings, in all combination was really worst that default settings (in FPS). Other LGTM.

Next note, it will be nice to add RGB LCD support into LVGL port. I would like do it in future, but I must to more understand before it.

Thank you for testing it! When using the anti-tearing function, compared with the default settings, it will definitely lead to a lower FPS. Because this function uses PSRAM as the LVGL buffer while default settings use SRAM. And, I also expect RGB LCD support in LVGL port.

[Lzw655]

@espzav @tore-espressif Can we merge it now? After this, we will update examples and the factory bin in esp-dev-kits.