RE: Problem using lvgl:

Pablosanserr — Thu, 09 Feb 2023 11:32:56 GMT

Hi,

Thanks for the suggestion. Unfortunately the logs did not show me any relevant information about the problem.

However, I have found the problem. The lv_task_handler() function must be called continuously so that lvgl can react to events.

Adding an infinite loop at the end of main solved my problem. The keyboard works correctly.

while(1){
	lv_task_handler();
	k_sleep(K_MSEC(5));
}

RE: Problem using lvgl:

haakonsh — Wed, 08 Feb 2023 11:56:16 GMT

I suggest you start by enabling any relevant logging. At least for zephyr I2C driver, nrfx twim driver, and lvgl library.

I also suggest you scope the I2C lines with a digital analyzer and see what happens before and after you touch the screen.