cst226 Touch Screen Controller¶
The cst226
touchscreen platform allows using the touch screen controllers based on the cst226 chip with ESPHome.
The I²C is required to be set up in your configuration for this touchscreen to work.
This controller is used in the Lilygo T4-S3 AMOLED Display.

cst226 touchscreen on Lilygo T4-S3 AMOLED Display¶
Base Touchscreen Configuration¶
# Example configuration entry
touchscreen:
platform: cst226
id: my_touchscreen
interrupt_pin: GPIOXX
Configuration variables:¶
id (Optional, ID): Manually set the ID of this touchscreen.
interrupt_pin (Optional, Pin Schema): The touch detection pin.
reset_pin (Optional, Pin Schema): The chip reset pin.
All other options from Touchscreen.
Binary Sensor¶
In addition to touch areas on the screen configured through the Touchscreen component, the cst226 supports a button located outside of the normal touchscreen area. A binary sensor can be configured to react to touching this button.
# Example configuration entry
binary_sensor:
- platform: cst226
name: "Home"
Configuration variables:¶
cst226_id (Optional, ID): Manually specify the ID of the touchscreen.
All other options from Binary Sensor.
Sample config for the T4-S3¶
i2c:
sda: GPIO6
scl: GPIO7
touchscreen:
- platform: cst226
id: my_touchscreen
interrupt_pin: GPIO8
reset_pin: GPIO17