Confusing guidelines / Difficulties to use library with platformIO

[MainWire]

Hi,

After spending some time and eventually managing to install the LV_PlatformIO library, I am encountering a few build errors I cannot fix.
The main problem seems to be that I cannot get a correct main.cpp file content, and I am having difficulties understanding the platformIO instructions

My installation :

• lvgl @ 8.2.0
• lv_conf.h enabled
• The project folder I am using (lv_platformio master project) Github

Toolchains versions :

• • framework-espidf @ 3.50102.240122 (5.1.2)
• • tool-cmake @ 3.16.4
• • tool-esptoolpy @ 1.40501.0 (4.5.1)
• • tool-idf @ 1.0.1
• • tool-mconf @ 1.4060000.20190628 (406.0.0)
• • tool-ninja @ 1.9.0
• • tool-riscv32-esp-elf-gdb @ 11.2.0+20220823
• • tool-xtensa-esp-elf-gdb @ 11.2.0+20230208
• • toolchain-esp32ulp @ 1.23500.220830 (2.35.0)
• • toolchain-xtensa-esp32 @ 12.2.0+20230208

• PlatformIO.ini file : Platformio.ini
• Cmake file :

cmake_minimum_required(VERSION 3.16.0)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
project(LVGL_C_Main)

Attempt n°1 (demo_create was not declared)

1. Using the instructions and the main.c available at the following link Platformio support
2. and after correcting the line #include "demo.h" to #include "demos/lv_demos.h" because of the demo.h not found

I am getting the following build error : src/main.cpp:28:5: error: 'demo_create' was not declared in this scope; did you mean 'lv_obj_create'?

Note : I was not able to Build and run the demo as shown here because I could not find any idf.py file in my downloads.

Attempt n°2 (monitor.h no such file or directory)

1. Using the following main.cpp main.cpp dpaste link
2. After Moving the 'hal' folder to lib folder, because vscode wasn't finding the file in main.cpp
3. And Correcting the path to hal with the following : #include "..\lib\hal\sdl2\app_hal.c" (otherwise app_hal isn't found)
4. Downloading _SDL2-devel-2.30.1-VC.zip _ at the following link SDL download and putting it in the lib folder (with the hal folder)

I am getting the following error : src/..\lib\hal\sdl2\app_hal.c:4:10: fatal error: display/monitor.h: No such file or directory

I also tried to follow the instructions here PIO issue but I was stuck because I could not find the idf.py

I am unsure of how I should proceed to use this library with platformIO

I would be really grateful to anyone providing some help !

Thanks in advance

[MainWire]

I would be really happy for any help I may have 👍 I still can't figure out how to make the library compile with the examples sketch. Ask anything you need !

[fbiego]

Have you tried the latest update with LVGL 9?

[ghisbo]

I fully agree, no way to get somewhere with these guidelines.

[fbiego]

Can you share what challenge you are having, we can find a way to improve the guidelines

[ghisbo]

I followed the procedure outlined here. I can produce the emulator but i do not find an env for the "Elecrow3.5 with TFT touch". based on ESP32S3. I can program the ESP32S3 but i cannot get anything to display. I have been looking in Google but no working result.
What would help is an example with the most basic feature ( label) complete with platformio definition ( in my case the Elecrow 3.5 TFT touch (parallel)

[fbiego]

What framework do you need to use for ESP32? Currently, there is support for Arduino framework (ESP-IDF not yet supported).
I will update the repo to include samples for Elecrow 3.5 TFT touch (Arduino framework), and some instructions for adding more ESP32 based boards

[ghisbo]

Sounds very good