Tasmota Berry driver for Sonoff TX Ultimate

Basic Berry driver for Sonoff TX Ultimate touch panel IC CA51F353S3.

TX Ultimate is a touch switch with RGB LEDs, haptic motor and I2S audio speaker. It is available from Sonoff's store in 1, 2 and 3 gang versions.

See Tasmota templates for configuration and other features like I2S audio, LEDs, haptic feedback and Matter support.

Functions

Quick and dirty skeleton driver. All touch events are reported to a RESULT topic. There's a beginning of a command interface which will be expanded to have calibration of the touch channels.

Touch panel is divided into 10 vertical segments or channels. It has the following events:

• touch event with position - triggers on each touch
• short press
• long press
• multi touch - touching multiple channels at once
• swipe left and right - has starting and ending coordinate
• dash - shorter than swipe, usually moving from one channel to the adjacent one

Shown in console and in MQTT as:

tele/tasmota/RESULT = {"TXUltimate":{"Action":"Touch","Channel":3}}
tele/tasmota/RESULT = {"TXUltimate":{"Action":"Multi"}}
tele/tasmota/RESULT = {"TXUltimate":{"Action":"Short","Channel":4}}
tele/tasmota/RESULT = {"TXUltimate":{"Action":"Long","Channel":4}}
tele/tasmota/RESULT = {"TXUltimate":{"Action":"Swipe left","From":0,"To":252}}

Serial Protocol

Explanation: All Data larger than one byte are transmitted in big-endian mode.

In general, a command-response synchronization mechanism is used, where the sender expects to receive a response packet corresponding to the sent command. If the sender does not receive a correct response packet within the specified timeout, it will trigger a timeout transmission.

Thanks to

Would not be possible without the help of smarthomeyourself.de and his esphome custom component