Tuya platform - bitmask (and ro/rw) handling

[Stoatwblr]

Component name

Tuya

Link to component documentation on our website

https://esphome.io/components/tuya/

Describe the enhancement

There is no handler for tuya bitmasks (type 0x5

There IS one in the modbus platform, with samples given at https://esphome.io/components/modbus_controller/#bitmasks

Something similar would be perfect:

eg: (if done as per modbus)

binary_sensor
  - platform: tuya
    name: "Alarm - device fault"
    sensor_datapoint: 12
    bitmask: 0x1
    register_type: read
  - platform: tuya
    name: "Alarm - high temperature protection"
    sensor_datapoint: 12
    bitmask: 0xf
    register_type: read

I'm aware that "binary sensor" on Tuya covers booleans, so some form of shoehorning is needed

The alternative is a bunch of lambda handling which seems a wasteful duplicate of resources

Right now the difference between ro and rw is covered by assigning different names and I'm not sure how writeable bitmasks should be handled (ie: register_type, or defining as a switch)

eg:

binary_sensor/switch
sensor/number

Tuya doesn't handle readonly Raw(0x0) or enum(0x4) DPids in any case - this needs fixing too

Use cases

In this instance: it's alarm decoding, but I have a portable AC with similar requirements for settings

Regarding the ro/rw issue: attempting to write back to readonly enum or raw items makes for a messy interface panel or a lot of cpu-sapping lambdas reinventing what's already there

Anything else?

No response

[github-actions[bot]]

🏷️ I've automatically added the component: tuya label to help categorize this feature request.