micropython+lvgl on stm32F746

[38domo]

hello, i have a stm32F746 board including a 4 inchs display. i would like to install on it Micropython and lvgl to be able to develop an application to display datas coming fron ethernet or serial. i am using process from: https://blog.lvgl.io/2020-08-10/stm32-microptyothon-and-lvgl but it is not working . first link mentionned import only micropython without lvgl. replacing link with lvgl don't work also as there are missing files in ports/stm32 to be able to compile correctly. help would be appreciable as my expertise is limited. regards

[Oliver2003Taylor]

The problem you’re running into is mostly down to the guide being outdated. Since around 2021, the way LVGL integrates with MicroPython has changed quite a bit, and manually merging repositories (as shown in older blog posts) will usually lead to missing files or build errors.
If you’re using the STM32F746-Discovery, the recommended approach now is to use the lv_micropython repository, which already includes LVGL properly integrated as a module.
The “missing file” errors typically happen when submodules aren’t initialized, or when the folder layout from older tutorials no longer matches current MicroPython versions.
Also, keep in mind that the F746-Discovery uses LTDC for the LCD. Make sure the display configuration in mpconfigboard.h matches the board’s pinout. One good sanity check is to first build a plain MicroPython firmware for this board (without LVGL) to confirm your toolchain is set up correctly.