Cannot get the example to work about lv_port_esp32

[kisvegabor]

Have you changed anything in the code?

[agent3bood]

No, I didn't change any code, also I tried to copy the example to my own project and got the same error.
The screen background led will go on and nothing on the display.

[kisvegabor]

I'll update the project to the v6.0 version of LittlevGL next week. Hopefully, the problem will be solved then.
If not, at least I will have an ESP32 with a display to make further tests.

BTW, the error message says "watchdog got triggered". Is the watchdog enabled by default?

To see what happens in LittelvGL you can enable Logging

[agent3bood]

Thanks I will wait for the updated repo.
About the error message I think it is from FreeRTOS.
I have also enabled logging for LittelvGL, it is logging that the UI is being drown but nothing on the screen and I get the same watchdog error.
I have tried different boards and screens and different example configurations it all give the same error.
By the way I update the LittelvGL library, can I just pull from master?
Regards

[kisvegabor]

By the way I update the LittelvGL library, can I just pull from master?

Yes, but note that the prototype of the drivers has been changed. See these about the Display and Touchpad.

You should also update the lv_example repo.

[C47D]

I disabled the watchdog interrupt to don't get those warnings, it's not recommended to do so but it's just for trying out lvgl.
After doing make menuconfig go to Component config > Common ESP Related and disable Interrupt watchdog and Initialize Task watchdog timer on startup.

[kisvegabor]

I've updated the project and found the issue. It was the touchpad driver.

Is it working there too?

[agent3bood]

I could not get the touch to work on either this repo or https://github.com/espressif/esp-iot-solution/tree/master/examples/hmi
On the iot-solutions example I got the display to work only.

[kisvegabor]

In this project, is the display working?

[agent3bood]

yes display is working in iot-solutions https://github.com/espressif/esp-iot-solution/tree/master/examples/hmi

[kisvegabor]

yes display is working in iot-solutions

However, it still uses v5.3. In this issue, the goal is to update this project to v6.0

[stale]

This issue or pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[pjaos]

Not sure if you've solved this issue but I've implemented a driver for the ADS7843 touch screen driver used in this display (http://www.lcdwiki.com/2.8inch_SPI_Module_ILI9341_SKU:MSP2807), integrated this with great LittlevGL and mongoose OS. It's available at https://github.com/pjaos/mgos_esp32_littlevgl if you're interested.

[agent3bood]

Hi
Actually I did not fix the issue as I was working on other parts of the project (it is part time so it is moving slow). I will definitely check the new one also and report back here is the issue is solved.
Thanks again

[kisvegabor]

I suggest continuing it on the Forum because more people are reading that.
https://forum.littlevgl.com

[agent3bood]

I can confirm the display example is working with latest esp idf pulled today.

[kisvegabor]

Awesome, thank you for the feedback!