LVGL Tutorial with ESP32, We can understand better and faster through LVGL Examples

[@FatihTurbay]

Thank you. I have been trying to run the demo for a week and I was able to do it today. It was great to come across examples on the same day.

[@arash5094]

I love your videos
Please make a full playlist for lvgl 9
because it's very useful for iot on embedded

[@arash5094]

I heard lvgl and scoor line stereo doesn't collaborate together anymore
If it's true
Please make a full tutorial to design ui buy lvgl in vs code without SLS❤

[@ДорогамиЕвропы-п6у]

Thank you. Your videos very helped to me 😆

[@ThatProject]

Happy to help!

[@peeyushdadwal]

Thanks!

[@SportsHighlightsBhae]

Thanks! I applied your method on ssd1963 7" lcd but touch not working

[@ThatProject]

@@SportsHighlightsBhae What touch IC do you have in your SSD1963? XPT2046? FT5316?

[@thenextproblem8001]

Hi Man, can you make a video how to use it on Esp32? No matter what it always give errors for CYD as known "cheap yellow display"

[@ThatProject]

It should be working fine. Please check this one. github.com/witnessmenow/ESP32-Cheap-Yellow-Display/tree/main/Examples/LVGL9

[@thenextproblem8001]

@@ThatProject you should make a repo about your followers projects. İ have made a energy analyzer with it. Happy to share the code! Your the best

[@ThatProject]

@@thenextproblem8001 Have you checked my GitHub? github.com/0015/ThatProject

[@FrankP83]

I've tested the observer 4 example, and on my ESP32 S3 the switching tab cause a freeze...always 😢

[@Grisodirector]

I had the same problem because I have an esp32 with 64Kb of volatile memory.
Two things must be done: move the weight from DRAM to PSRAM and use a non-blocking timer in the loop.
And you can solve it this way. Change the line code in this way:
//draw_buf_1 = heap_caps_malloc(DRAW_BUF_SIZE, MALLOC_CAP_DMA | MALLOC_CAP_INTERNAL);
draw_buf_1 = heap_caps_malloc(DRAW_BUF_SIZE, MALLOC_CAP_SPIRAM);
This way you move the weight of the drawing buffer from DRAM to PSRAM and the DRAM memory is used only to execute the code.
Change the loop like this:
void loop() {
static unsigned long lastUpdateMillis = 0;
if (millis() - lastUpdateMillis >= 5) {
lastUpdateMillis = millis();
// LVGL Task Handler
lv_task_handler();
// LVGL Tick Interface
unsigned int tickPeriod = millis() - lastTickMillis;
lv_tick_inc(tickPeriod);
lastTickMillis = millis();
}
If you use a non-blocking timer with the millis() function LVGL will update every 5ms allowing for a much smoother display. Hope this helps.

[@Hojadurdy]

Which development board or display board is that? 1:09

[@ThatProject]

It's WT32-SC01 Plus. ruclips.net/video/KPiDBOOTJ8g/видео.htmlsi=gxJ4pRZ67lJT6C44

[@FrankP83]

Hi!Finally i've got it working on my little screen, but the lv_example_observer_4 shows just the tabs below (first, second, third) but i can't see anything...and the touch appears to be not working...suggestions?
I will try to test the other examples in the video!
PS:
I've tested all the other examples and all are working except for the observer, the other one tested are :
//lv_demo_benchmark(); //OK
//lv_example_get_started_1(); //OK
//lv_example_event_2(); //OK
//lv_example_observer_4(); //Not working?!Touch unresponsive also?!
//lv_example_table_1(); //OK
//lv_example_list_2(); //OK
//lv_example_anim_timeline_1(); //OK
lv_example_anim_1(); //Mmmmh, pressing the switch button the animation works just at the beginning, if pressed again then the screen freeze...wtf?!
I've tested the lv_example_switch_1, the switches are working ok. Maybe there is an issue with the animation associated to the text that appears and disappears in the lv_example_anim_1...really don't know the issue :/

[@ThatProject]

That's weird. LVGL recently updated to 9.1.0. Still having this issue?