LVGL - using a date stamp as a label at compile time?

ESPHome
1

Seeing as I am building stuff daily and I have15 of the 4" units, one of which I have as a test unit - is there a way I could date/timestamp a build and use it in a label so that I know which unit has which version in it???

2

I think you could leverage the project version ESPHome Core Configuration — ESPHome

I think you’ll have to maintain the version yourself though.

Other than that you could try using a global text set to the date/time

3

Yeah just write a little bash script to put the build date and time in a file then include it in your code.

4

If you always update via OTA you could use an on_end: trigger to set a datetime sensor to “now”?

Guess you’d need to check how updating sensors at that point will work and be restored.

5 
  - label:
      text:
        format: "%s %s"
        args: [__DATE__, __TIME__]
3 Likes
6

That’s cool! I just added it to my LVGL boot screen.

# Boot Screen  
    widgets:
      - obj:
          id: boot_screen
          layout: 
            type: flex
            flex_flow: COLUMN_WRAP
          height: ${screen_hight}px            
          width: ${screen_width}px
          text_font: $text_font
          scrollbar_mode: 'off'
          bg_color: White
          bg_opa: COVER
          radius: 0
          pad_all: 5
          widgets:
            - image:
                src: boot_logo
                antialias: true
                pad_bottom: 10
            - label:
                text:
                  format: "ESPHome Version: %s"
                  args: [ 'id(esphome_version).state.c_str()' ]
            - label:
                text:
                  format: "Build Date: %s - %s"
                  args: [__DATE__, __TIME__]                  
            - label:
                id: connected_mac_label
                text: "MAC Address: Not Connected"
            - label:
                id: ip_address_label
                text: "IP Address: Not Connected"                
            - label:
                id: connected_ssid_label
                text: "Connected SSID: Not Connected"
            - label:
                id: wifi_signal_db_percent_label
                text: "WiFi Strength: Not Connected"
            - obj:
               radius: 0
               pad_all: 0
               width: ${screen_width}px
               flex_grow: 1            
               widgets:
                 - button:
                    align: bottom_right
                    x: -10
                    radius: 15
                    width: 100
                    height: 60
                    checkable: true
                    widgets:
                     - label:
                         text_color: White
                         align: center
                         text: "OK"
                    on_press:
                     - lvgl.widget.hide: boot_screen
2 Likes
7

Thanks Clyde. This is PERFECT!