# CST816 I2C Touch Controller Component The `Cst816` class provides an interface to the CST816 touch controller. It allows you to query the data for the touch points on the touchscreen. ## Example The [example](./example) shows how to use the CST816 touch controller with ESP32. It is designed to run on a [Matouch Rotary Display](https://wiki.makerfabs.com/MaTouch_ESP32_S3_Rotary_IPS_Display_1.28_GC9A01.html).
idf.py add-dependency "espp/cst816^0.21.0"