ESP32-S2-HMI-DevKit-1 with LVGL version 8.x => Not working (IDF-Version 4.3) (IDFGH-8413)

[VigneshAkshaya]

Answers checklist.

• I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• I have searched the issue tracker for a similar issue and not found a similar issue.

General issue report

I have tried HMI development on ESP32-S2-HMI-DevKit-1 with LVGL version 7.11, working successfully.

But it is not working with the same code porting to LVGL version to 8.x

please find attachment for reference,

Any Support ?????

[Lzw655]

@VigneshAkshaya Please attach your new code which porting to v8.x.

[VigneshAkshaya]

Please find the attachment
SampleProgramLVGL8.2.zip

[Lzw655]

@VigneshAkshaya I have reviewed your project, and I found there're some uncorrect configurations. You can modify them as follow:

• SampleProgramLVGL8.2/components/lvgl/lv_conf.h:
  • Set LV_MEM_CUSTOM to 1
  • Set LV_MEMCPY_MEMSET_STD to 1
    
• SampleProgramLVGL8.2/components/lvgl/lv_port/lvgl_port.c:
  • Modify disp_drv.hor_res and disp_drv.hor_res
    
  • Modify parameters of bsp_lcd_flush
    

[VigneshAkshaya]

@Lzw655
I have tried with the above configurations and it is working fine for labels, but I dont know why it is not working for other widgets.

• Button was created and added to the existing “Hello World “ text – Only “Button” text label is getting displayed.
• Event was assigned to the button to follow up the button event – It’s not clickable and given event also hasn’t happened.
• And , widgets such as bar , slider , switch were also tested and only text is getting displayed for all .

Changes I have made,
main\hello_world_main.c -> btn1 is created and its corresponding event handler .

Hardware Observation as below

[Lzw655]

@VigneshAkshaya I checked the file "components\lvgl\lv_conf.h" in your project again, and I found the configuration "LV_USE_THEME_DEFAULT" is set to 0 which should be 1. This caused LVGL's widgets to have no default appearance.

[Lzw655]

@VigneshAkshaya Is your problem solved? If so, please close this issue.

[VigneshAkshaya]

Hey @Lzw655 , sorry for the delay, I was unavailable for whole past 2 weeks.

• “LV_USE_THEME_DEFAULT” was set it to 1.Dsiplay is changed and there was no response on clicking the button
• I2C Bus and LCD Touch Init are also happening properly . Verified through ESP ERROR CHECK and print statements for all the init functions.
• LV_EVENT_CLICKED given to the event handler is not working whereas other default events are happening – verified by printing event codes.

[Lzw655]

Sorry for not responding to your question in a timely manner!
Since this problem has lost its time, I will close it after a week. If you still need to solve this problem, please leave a comment or open a new issue, thank you!