LVGL - keyboard/textarea causes reboots

ESPHome
1

I would love anyones help - been going back and forth on this one for forever and there is no real world examples in the forums for either the keyboard or textarea yet.

I have existing code, but at the moment I’m on my phone so can’t post that bit yet.

I have a dropdown list that shows a number of input_text entities in HA.

I have a keyboard and textarea set up.

How do I get the value of the textarea to populate the value of the selected dropdown item (which points to a HA input_text) with the value of the textarea?

Surprisingly the action, on_ready: works with both keyboard and textarea despite it not being documented in textarea.

TBH: I can actually get it to work on the first value of the dropdown (0). But if I move to the second value, the esp32 reboots.

Logs don’t say anything (cos it reboots before it sends the log)

As I said - am on my phone (on the train) and would really love to see how someone else would achieve this.

Thanks.

2
  1. Really, there’s not much point in even asking without sample code.
  2. Serial logs will show information about exceptions causing reboots.
  3. I assume you’re using a lambda to get the dropdown text - this is most likely what is causing the exception.
3

Just dont know if im going about this the right way and Im not the best at lambdas.

Whenever I touch the mainpage button, it reboots the screen
Pls not I have redacted most of the code because it has GROWN (about 3.5k lines)

    globals:
      - id: selected_option
        type: int
        initial_value: '0'


#######################
# On the settings page
#######################

    - dropdown:
        id: assign_dropdown
        width: 100
        x: 200
        y: 50
        options:
          - OPTION1
          - OPTION2
        on_value:
          then:
          # Save the selected option in the global variable
            - lambda: |-
                id(selected_option) = x;  


######################
# On the title_entry_page
######################
    - textarea:
        id: textarea_1
        text: "blanktext"
        text_font: barlow60
        align: top_mid 
        one_line: true           
        bg_color: 0x000000
        bg_opa: 0%
        border_color: 0x000000
        border_opa: 0%
        y: -10
        text_color: 0xFFFFFF
        on_ready:
          then:
            - if:
                condition:
                  lambda: 'return id(selected_option) == 0;'  # For dropdown1
                then:
                  - lvgl.label.update:
                      id: [ mainpage, sspage, settingspage ]
                      text:
                        format: "%s"
                        args: [ 'text.c_str()' ]
                  - homeassistant.service:
                      service: input_text.set_value
                      data:
                        entity_id: input_text.entity1
                        value: !lambda 'return text.c_str();'

            - if:
                condition:
                  lambda: 'return id(selected_option) == 1;'  # For dropdown2
                then:
                  - lvgl.label.update:
                      id: [ mainpage, sspage, settingspage ]
                      text:
                        format: "%s"
                        args: [ 'text.c_str()' ]
                  - homeassistant.service:
                      service: input_text.set_value
                      data:
                        entity_id: input_text.entity2
                        value: !lambda 'return text.c_str();'


        - keyboard:
            id: keyboard_id
            textarea: textarea_1
            mode: TEXT_UPPER
            bg_color: 0x000000
            bg_opa: 0%
            items: 
              bg_color: 0x2F8CD8
              bg_grad_color: 0x005782
              bg_grad_dir: VER
              bg_opa: COVER
              border_color: 0x0077b3
              border_width: 1
              text_color: 0xFFFFFF                 

##################
# on the main/first page
##################

        - button:
            id: mainpage_title_button
            align: top_mid
            width: 350
            height: 60
            bg_color: 0x000000
            bg_opa: 0%    
            border_width: 0
            border_color: 0xff0000
            border_opa: 0%        
            shadow_color: 0x000000
            shadow_opa: 0x000000  
            widgets:
              - label:
                  id: mainpage
                  text_font: barlow60
                  text: "title goes here"
                  align: center
                  bg_color: 0x000000
                  bg_opa: 0%
                  border_color: 0xff77aa
                  border_opa: 0%
                  border_width: 0
            on_press:
              then:
                - lvgl.page.show: title_entry_page
4

You can’t return the value of c_str() - it ceases to exist when the lambda returns. Just return text.

5

Thanks clyde.
I had to re-assess the way I was doing the code, but I implemented your solution and now no crashes.
Tq

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