Well, thank you for that information about the TTP229.
The code I found did the job for an HDSDR controller project that was eventually abandoned
even although it worked as planned. The ergonomics just didn't work for me.
Having also built a Nextion controller my preference is to complemented the touch inputs
with knobs and buttons for tuning and certain other most frequently used controls.
I agree 100% with your comment about adding an external S-meter with the Nextion display.
73 Bob GM4CID