Set display as light - how?

[open-forest]

https://github.com/Blackymas/NSPanel_HA_Blueprint/blob/main/docs/customization.md#set-display-as-a-light
I added this code to the device yaml, reflashed the device. Now where in HA do I find the actual light? My panel is already in HA; do I have to remove and reintegrate it?

[edwardtfn]

You will find the light named "Display" into the device's page (Settings -> Devices and Services -> ESPHome).

[open-forest]

Hi Edward, thanks for the quick reply!
This is the yaml I use to flash the device. After flashing it the device page is exactly the same as before. Does it takes some time to update, or do I somehow have to push Home Assistant to recognize that the device configuration has changed?

substitutions:

###### CHANGE ME START ######

  device_name: "nspguestmain" 
  wifi_ssid: !secret wifi_ssid
  wifi_password: !secret wifi_password

# nextion_update_url: "http://192.168.68.60:8123/local/nspanel_us.tft" # URL to local tft File
  nextion_update_url: "https://github.com/Blackymas/NSPanel_HA_Blueprint/raw/main/hmi/nspanel_us.tft"  # URL to Github

##### CHANGE ME END #####
# Encrypt the communication between ESPHome and Home Assistant
api:
  encryption:
    key: !secret api_encryption_key

light:
  # Add the display as a light in Home Assistant
  - name: Display
    id: display_light
    icon: mdi:tablet-dashboard
    platform: monochromatic
    output: display_output
    default_transition_length: 0s
    on_turn_on:
      then:
        - lambda: |-
            ESP_LOGD("light.display_light", "Turn-on");
            if (current_page->state == "screensaver") disp1->goto_page(wakeup_page_name->state.c_str());
            timer_reset_all->execute();
    on_turn_off:
      then:
        - lambda: |-
            ESP_LOGD("light.display_light", "Turn-off");
            goto_page->execute("screensaver");

output:
  # Output required by `display_light` to send the commands to Nextion
  - id: display_output
    platform: template
    type: float
    write_action:
      - lambda: |-
          ESP_LOGV("output.display_output", "state: %f", state);
          uint8_t current_brightness = int(round(display_light->current_values.is_on() ? (display_light->current_values.get_brightness() * 100.0f) : 0.0));
          ESP_LOGV("output.display_output", "current_brightness: %i%%", current_brightness);
          set_brightness->execute(current_brightness);
    
script:
  # Updates the existing `page_changed` script to update the `display_light` status when a page changes
  - id: !extend page_changed
    then:
      - lambda: |-
          ESP_LOGD("script.page_changed(custom)", "page: %s", current_page->state.c_str());
          ESP_LOGV("script.page_changed(custom)", "is_on(): %s", display_light->current_values.is_on() ? "True" : "False");
          if (current_page->state == "screensaver" and display_light->current_values.is_on()) {
            auto call = display_light->turn_off();
            call.perform();
          } else if (current_page->state != "screensaver" and (not display_light->current_values.is_on())) {
            auto call = display_light->turn_on();
            call.perform();
          }

  # Updates the existing `set_brightness` script to update the `display_light` status when a new brightness level is set
  - id: !extend set_brightness
    then:
      - lambda: |-
          ESP_LOGD("script.set_brightness(custom)", "brightness: %.0f%%", brightness);
          uint8_t current_light_brightness = int(round(display_light->current_values.is_on() ? (display_light->current_values.get_brightness() * 100.0f) : 0.0));
          ESP_LOGV("script.set_brightness(custom)", "current_light_brightness: %i%%", current_light_brightness);
          if (brightness != current_light_brightness) {
            if (current_page->state != "screensaver" and brightness > 0) {
              auto call = display_light->turn_on();
              call.set_brightness(static_cast<float>(current_brightness->state) / 100.0f);
              call.perform();
            } else if (display_light->current_values.is_on()) {
              auto call = display_light->turn_off();
              call.set_brightness(0);
              call.perform();
            }
          }


##### DO NOT CHANGE ANYTHING! #####

packages:
  ##### download esphome code from Github
  remote_package:
    url: https://github.com/Blackymas/NSPanel_HA_Blueprint
    ref: main
    files: [nspanel_esphome.yaml]
    refresh: 300s

##### DO NOT CHANGE ANYTHING! #####

[open-forest]

Flashed again and now it works. Thanks!

[edwardtfn]

Nice!