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lvgl / lvgl

Embedded graphics library to create beautiful UIs for any MCU, MPU and display type.
https://lvgl.io
MIT License
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Arduino example in 9.0 not working on RP2040 or ESP32 #5536

Closed kb1ujs closed 7 months ago

kb1ujs commented 7 months ago

LVGL version

9.0.0

What happened?

I have been trying to run the LVGL_Arduino sketch included with the library install of LVGL on both the Raspberry Pi Pico and an ESP32. I'm using an ILI9341 display with both microcontrollers. I have the TFT_eSPI library installed with tested working configurations using TFT_eSPI examples on both microcontrollers. I have LV_COLOR_DEPTH set to 16 and LV_USE_TFT_ESPI set to 1 in my lv.conf. When I compile the script I get no errors, but I also get nothing on the screen of either microcontroller when I upload the code. It appears the display is initialized, but nothing ever gets drawn. I also lose the serial port on my Pico and have to power off and use the BOOTSEL button to reprogram. I added some code to flash the onboard LED on my Pico as each stage of the script is completed and found that lv_timer_handler never returns after being called the first time through the loop() function.

How to reproduce?

Compile the LVGL_Arduino sketch as provided with the LVGL 9.0 library on either Pico

kisvegabor commented 7 months ago

There was a fix related to Arduino. Please use the latest version from here.

kb1ujs commented 7 months ago

Thank you, that solved the problem.

I assume this corrected example will be included in a future Arduino library release?

kisvegabor commented 7 months ago

Yes, sure