Using the touch panel with interrupt

[mottibz]

Hello, I am using a 2.8" TFT via API that uses the ILI9341 (240 X 320) with an integrated touch panel. I am connecting it to an ESP32. The example code works fine but it works in polling mode which loads the SPI bus and the system for no reason. I am trying to do the same using interrupts. I connected the the T_IRQ pin to an ESP32 input and trying to only get touch data when I get an interrupt. The issue is that I constantly get interrupts even when I do not touch the screen.
The setup code that I use is:
pinMode(TOUCH_IRQ, INPUT);
touchIntSignal = false;
attachInterrupt(digitalPinToInterrupt(TOUCH_IRQ), touchISR, RISING);
The loop code that I am using is:
if (touchIntSignal) {
touchIntSignal = false;

Serial.println("touch interrupt occured");

}
And I constantly get the message as if interrupts are occuring all the time.
I tried setting the pinMode to INPUT_PULLUP and it did not help. I tried setting the interrupt to occur either on RISING, FALLING, CHANGE and it did not help either.
Can anyone help me with this?
Thanks a lot, Motti

[Bodmer]

Issue #820 contains helpful information. In particular note the comment here about recurring interrupts and the solution.

[mottibz]

Thanks a lot for the info. That is what I found after digging into more materials. Need to ignore interrupts coming in while reading the touch data. All is working now. Thanks again!