Did anyone already trying to get ESPHome to work on LilyGo T-Embed

ESPHome
19

OK, after some trial and error I finally got the native ESPHome’s st7789v component to work with LilyGO’s T-Embed. Turns out, sending the SLPOUT command is required, but should be done as early as possible:

on_boot:
  priority: 800
  then:
    - lambda: |-
        id(disp).enable();
        id(disp).transfer_byte(0x11);
        id(disp).disable();

For the display itself, custom config for the st7789v can be used:

display:
  - platform: st7789v
    model: CUSTOM
    eightbitcolor: False
    rotation: 270
    width: 170
    height: 320
    offset_width: 0
    offset_height: 35
    backlight_pin: GPIO15
    cs_pin: GPIO10
    dc_pin: GPIO13
    reset_pin: GPIO9
    id: disp
    lambda: |-
      it.strftime(10, 20, id(roboto), "%H:%M", id(home_time).now());

Note how it’s not a 320x170 display, but a rotated 170x320 :smiley:

Here’s the full config, for future reference :slight_smile:

esphome:
  name: <project-name>
  platformio_options:
    # build_flags: |-
    #   -DARDUINO_USB_CDC_ON_BOOT=1 -DLV_CONF_INCLUDE_SIMPLE
    board_build.mcu: esp32s3
    board_build.name: "LilyGO T-Embed ESP32-S3"
    board_build.upload.flash_size: "16MB"
    board_build.upload.maximum_size: 16777216
    board_build.vendor: "LilyGO"
  on_boot:
    priority: 800
    then:
      - lambda: |-
          id(disp).enable();
          id(disp).transfer_byte(0x11);
          id(disp).disable();
      - switch.turn_on: power_on

esp32:
  board: esp32-s3-devkitc-1
  variant: esp32s3
  framework:
    type: arduino

# Enable logging
logger:

# Enable Home Assistant API
api:

ota:
  password: !secret ota_password

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

spi:
  clk_pin: GPIO12
  mosi_pin: GPIO11

switch:
  - platform: gpio
    pin:
      number: GPIO46
      mode:
        output: True
    name: "Power On"
    id: power_on
  - platform: gpio
    pin:
      number: GPIO15
      mode:
        output: True
    name: "Display Backlight"
    id: backlight

time:
  - platform: homeassistant
    id: home_time


font:
  - file: "gfonts://Roboto"
    id: roboto
    size: 96

display:
  - platform: st7789v
    model: CUSTOM
    eightbitcolor: False
    rotation: 270
    width: 170
    height: 320
    offset_width: 0
    offset_height: 35
    backlight_pin: GPIO15
    cs_pin: GPIO10
    dc_pin: GPIO13
    reset_pin: GPIO9
    id: disp
    lambda: |-
      it.strftime(10, 20, id(roboto), "%H:%M", id(home_time).now());

sensor:
  - platform: rotary_encoder
    internal: True
    name: "Rotary Encoder"
    pin_a: GPIO02
    pin_b: GPIO01

binary_sensor:
  - platform: gpio
    pin:
      number: GPIO00
      inverted: True
    name: "Rotary Button"
    internal: True
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