I'm having difficulty connecting an I2C LCD display to TM4C123G. I'm trying to connect it to J14 on the Grove Base BoosterPack. I've visited the page you've linked - yet cannot (easily) find the "J14" ...
THIS CODE IS OBSOLETE * It needs to be updated to be compatible with changes to the ESP32 standard libraries. Also, if fine granularity control is required, it needs to use long int arithmetic instead ...
The main takeaway is that QLED is closer to regular old LCD than it is to OLED, which I (and most other experts) consider a distinctly different class of television, much like plasma before it.