after following the steps explained here “Espidf lvgl how to use it” to set up lvgl and lvgl_drivers inside components folder for my project in the project source directory, After setting the tft configuration and touch configuration with menuconfig, I was getting this error
- post errors as text not as screenshot
- there might be a possibility that LVGL requires a certain ESP-IDF version to be used which is not the one used by PlatformIO (3.3).
- Upload the whole project to github or googledrive that you’re having problems with so that the errors are reproducable.
ok i will share a link to the project
Next time please execute the “Clean” project task so that the .pio
folder build files are removed – the project can be 28.8MB, not 155MB.
The observed error
In file included from components\lvgl_esp32_drivers\lvgl_helpers.c:10:
components\lvgl_esp32_drivers\lvgl_helpers.c: In function 'lvgl_driver_init':
components\lvgl_esp32_drivers\lvgl_helpers.h:57:25: error: 'LV_HOR_RES_MAX' undeclared (first use in this function); did you mean 'LV_HOR_RES'?
#define DISP_BUF_SIZE (LV_HOR_RES_MAX * 40)
^~~~~~~~~~~~~~
which is known at
https://githubmemory.com/repo/lvgl/lvgl_esp32_drivers/issues/71
Or rather, you are using LVGL v8 without the code being compatible with LVGL v8. This is also evident by the components\lvgl\library.json
file in your project which says "version": "8.1.0-dev"
. You cannot use LVGLv8 with the ESP32 port. It looks to me as if you just copied both the latest LVGL and LVGL_esp32 into your project without taking care of version compatibilities between the two.
When I follow the original steps outlined in
aka I build their example project with the exact LVGL versions as they specify (lv_port_esp32/components at master · lvgl/lv_port_esp32 · GitHub) from 7 months ago, it builds prefectly fine.
RAM: [= ] 14.7% (used 48264 bytes from 327680 bytes)
Flash: [==== ] 39.1% (used 410377 bytes from 1048576 bytes)
Building .pio\build\esp32dev\firmware.bin
esptool.py v3.1
Merged 1 ELF section
===================== [SUCCESS] Took 70.91 seconds =====================
see reference project at GitHub - maxgerhardt/pio-esp32-espidf-lvgl-example: PlatformIO compilable version of the example project found at https://github.com/lvgl/lv_port_esp32
I actually followed the steps here GitHub - maxgerhardt/pio-esp32-espidf-lvgl-example: PlatformIO compilable version of the example project found at https://github.com/lvgl/lv_port_esp32 on the project i shared, but i started from the " Use LVGL in your ESP-IDF project", I thought since i only want to use the library in a project , I did not go through this step “Build and run the demo.”. I only cloned the lvgl and lvgl_esp32_drivers into the project folder just to have a feel of it before implementing into my project.