LVGL watch face in ESPHome yaml

.gitignore

# Gitignore settings for ESPHome
# This is an example and may include too much for your use-case.
# You can modify this file to suit your needs.
/.esphome/
/secrets.yaml
/wifi.yaml

t-embed.yaml

# Before asking any questions - read the docs!: https://deploy-preview-3510--esphome.netlify.app/components/lvgl.html

esphome:
  name: t-embed
  friendly_name: LVGL Test on T-Embed
  platformio_options:
    board_build.flash_mode: dio

esp32:
  board: esp32-s3-devkitc-1
  variant: esp32s3
  framework:
    type: esp-idf

logger:
  level: DEBUG
  hardware_uart: USB_SERIAL_JTAG

ota:
  password: !secret ota_password

wifi: !include wifi.yaml

external_components:
 - source: github://clydebarrow/esphome@lvgl
   components: [ lvgl ] 

power_supply:
  - id: power_on
    enable_on_boot: true
    pin:
      ignore_strapping_warning: true
      number: GPIO46

spi:
  clk_pin: GPIO12
  mosi_pin: GPIO11
  interface: hardware

output:
  - platform: ledc
    pin:
      number: GPIO15
    id: backlight_output

light:
  - platform: monochromatic
    output: backlight_output
    name: LCD Backlight
    id: led
    restore_mode: ALWAYS_ON
    default_transition_length: 0s

display:
  - platform: ili9xxx
    id: lcd_display
    model: st7789v
    dimensions:
      height: 170
      width: 320
      offset_height: 35
      offset_width: 0
    transform:
      swap_xy: true
      mirror_x: false
      mirror_y: true
    data_rate: 80MHz
    cs_pin: 10
    dc_pin: GPIO13
    reset_pin: GPIO9
    update_interval: never
    auto_clear_enabled: false
    invert_colors: true

sensor:
  - platform: rotary_encoder
    name: "Rotary Encoder"
    id: encoder
    pin_a: 2
    pin_b: 1
    internal: true

binary_sensor:
  - platform: gpio
    id: pushbutton
    name: Pushbutton
    pin:
      number: 0
      inverted: true
      ignore_strapping_warning: true

time:
  - platform: sntp
    id: time_comp
    on_time_sync:
      then:
        - script.execute: time_update

script:
  - id: time_update
    then:
      - lvgl.indicator.line.update:
          id: minute_hand
          value: !lambda |-
            return id(time_comp).now().minute;
      - lvgl.indicator.line.update:
          id: hour_hand
          value: !lambda |-
            auto now = id(time_comp).now();
            return std::fmod(now.hour, 12) * 60 + now.minute;
      - lvgl.label.update:
          id: date_label
          text: !lambda |-
            static const char * const mon_names[] = {"JAN", "FEB", "MAR", "APR", "MAY", "JUN", "JUL", "AUG", "SEP", "OCT", "NOV", "DEC"};
            static char date_buf[8];
            auto now = id(time_comp).now();
            snprintf(date_buf, sizeof(date_buf), "%s %2d", mon_names[now.month-1], now.day_of_month);
            return date_buf;
      - lvgl.label.update:
          id: day_label
          text: !lambda |-
            static const char * const day_names[] = {"SUN", "MON", "TUE", "WED", "THU", "FRI", "SAT"};
            return day_names[id(time_comp).now().day_of_week-1];

interval:
  - interval: 1min
    then:
      - script.execute: time_update

lvgl:
  log_level: INFO
  rotary_encoders:
    sensor: encoder
    binary_sensor: pushbutton
    group: general
  color_depth: 16
  bg_color: 0x0F0F0F
  text_font: unscii_8
  align: center
  style_definitions:
    - id: date_style
      text_font: unscii_8
      align: center
      text_color: 0x000000
      bg_opa: cover
      radius: 4
      pad_all: 2
  widgets:
    - obj: # Clock container
        height: size_content
        width: size_content
        widgets:
          - meter: # Gradient color  arc
              height: 160
              width: 160
              align: center
              bg_color: 0
              scales:
                angle_range: 360
                rotation: 255
                range_from: 0
                range_to: 12
                ticks:
                  width: 35
                  count: 13
                  length: 8
                indicators:
                  - ticks:
                      local: true
                      start_value: 0
                      end_value: 12
                      color_start: 0xFF0000
                      color_end: 0x0000FF
          - meter:
              height: 160
              width: 160
              align: center
                    
              bg_opa: TRANSP
              text_color: 0xFFFFFF
              scales:
                - ticks:
                    width: 1
                    count: 61
                    length: 10
                    color: 0xFFFFFF
                  range_from: 0
                  range_to: 60
                  angle_range: 360
                  rotation: 270
                  indicators:
                    - line:
                        id: minute_hand
                        width: 3
                        color: 0xE0E0E0
                        r_mod: -1

                - 
                  angle_range: 330
                  rotation: 300
                  range_from: 1
                  range_to: 12
                  ticks:
                    width: 1
                    count: 12
                    length: 1
                    major:
                      stride: 1
                      width: 4
                      length: 8
                      color: 0xC0C0C0
                      label_gap: 6

                - angle_range: 360
                  rotation: 270
                  range_from: 0
                  range_to: 720
                  indicators:
                    - line:
                        id: hour_hand
                        width: 4
                        color: 0xA0A0A0
                        r_mod: -20
          - label:
              styles: date_style
              id: day_label
              y: -20
          - label:
              id: date_label
              styles: date_style
              y: +20

Without PSRAM you will need to set buffer_size to 25%

@clydebarrow is there a way to get a circular button on there? I was trying a sample for this but i was unable to get the button be a circle.

        - btn:
            group: my_group
            align: Left_MID
            radius: 65535
            clip_corner: True
            id: btn_id_3
            width: 70
            height: 70
            checkable: true
            widgets:
              - label:
                  align: center
                  text: "Previous"
            on_value:
              then:
                - lvgl.page.previous:
                    animation: OUT_LEFT
                    time: 300ms  

Did you try radius: 50%?

Did you try radius: 50%?

that worked! Thanks for the prompt reply!

One more thing and i can move this to a separate discussion thread if need be.

Do you have a on select sort of feature? So if one uses rotary encoder to move between buttons then using a on_select where it can trigger a label update. This way on smaller screens we can have smaller buttons with icons and a description area.

EDIT: Found it. The on_focus action on the widget

Yes it will work with them, lots of examples in the Esphome Discord server under the Display > LVGL sub thread.

Got it to work. Thanks!