mi_desk_lamp.yaml

substitutions:
  name: mi-desk-lamp
  device_description: "Xiaomi Mi Desk Lamp (MJTD01YL)"

esphome:
  name: ${name}
  comment: ${device_description}
  min_version: 2024.6.0
  project:
    name: "syssi.esphome-mi-desk-lamp"
    version: 1.0.0

esp8266:
  board: esp8285

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

ota:
  platform: esphome

logger:
  level: DEBUG

api:

binary_sensor:
  - platform: gpio
    id: button
    name: "${name} Button"
    pin:
      number: GPIO2
      inverted: true
    on_click:
      then:
        - light.toggle: light1

light:
  - platform: cwww
    id: light1
    default_transition_length: 0s
    constant_brightness: true
    name: "${name} Light"
    cold_white: output_cold
    warm_white: output_warm
    cold_white_color_temperature: 6500K
    warm_white_color_temperature: 2700K
    gamma_correct: 0

output:
  - platform: esp8266_pwm
    pin: GPIO4
    id: output_cold
  - platform: esp8266_pwm
    pin: GPIO5
    id: output_warm

sensor:
  - platform: rotary_encoder
    id: rotation
    pin_a: GPIO13
    pin_b: GPIO12
    resolution: 2
    on_value:
      then:
        - if:
            condition:
              # Check if Button is pressed while rotating
              lambda: 'return id(button).state;'
            then:
              # If Button is pressed, change CW/WW
              - lambda: |-
                  auto min_temp = id(light1).get_traits().get_min_mireds();
                  auto max_temp = id(light1).get_traits().get_max_mireds();
                  auto cur_temp = id(light1).current_values.get_color_temperature();
                  auto new_temp = max(min_temp, min(max_temp, cur_temp + (x * 10)));
                  auto call = id(light1).turn_on();
                  call.set_color_temperature(new_temp);
                  call.perform();
            else:
              # If Button is not pressed, change brightness
              - light.dim_relative:
                  id: light1
                  relative_brightness: !lambda |-
                    return x / 25.0;
        # Reset Rotation to 0
        - sensor.rotary_encoder.set_value:
            id: rotation
            value: 0