ESP32-3248S035C - Hardware Interrupt for GT911

[pepe-el-pepe]

Hello,
according to LINK there is a small hardware issue on this esp board. In case the software change is not a “big deal”, it would be great to have this here in CYD-Klipper :)

[suchmememanyskill]

Unsure what the benefit would be in this project; lvgl takes up most of the cpu time and polling happens inside the lvgl main loop, thus maxing out at 25 polls a second.

[pepe-el-pepe]

I mean, the author writes:
“This results in excessive CPU utilization of more than 80%. The changes listed below result in significantly lower CPU utilization of less than 10% on average (for static screens).”

Maybe I don't fully understand the pooling/interrupt issue, but in my life so far I've learned to use the available resources as efficiently as possible. Wouldn't one of the big advantages then be a cooler uC, longer life and more time for other things? You never know when you'll need it :)

If you don't think it's worth the effort, feel free to close the issue :)

[suchmememanyskill]

For (eventual) sleep mode support, this would be useful, but lvgl is architected in a way to do polling-based touch screen sensing. Don't think it's wise to use it for the main touch sensing routine