Touch Interrupt - showing gif/png Files - ESP32 2nd Task

[JoJos1220]

I have a general question in "how to implement touch on ESP32 2nd core":

My Project currently consists of two main purposes: Showing .png & .gif Images on a TFT Libary in an loop - its something like an endless showing of images delivered by SD-card. So far so good - this part is working.

Now, for some detail Information of the screen, i wanted to implement a small-light-size touch interaction where detail informations are provided by the image, WiFi Setup can be changed and so on.
I did some research, and I think the best way to implement something like that is, to use the second core of the ESP32, use the Interrupt pin and contionious pull the Pin in a loop if there was an interrupt or not and then call the tft.getTouchRaw() function for the coordinates.

The Implementation like that actually is working but is not running stable. I got some crashes due to interrupt by Multitasking issues and both tasks try to access the tft lib (for sure....drawing images and getting coords at the same time....)

I want to block now the access to the TFT display with an semaphore() but it is not working in a good way (starting app, once running good, then both cores are blocking but semaphore take/give is directly calling after tft interaction)

Does somebody have an application like this and can share me an code snipped in how the touch can be readed by a "good-filled" parallel action with showing gifs and/or png files? Is there some easier way to implement this behaviour?

Thanks.