Here’s the ESPHome YAML configuration file for the Lanbon L9 with a trivial LVGL UI to toggle the local relay:
external_components:
- source: github://EmbedMe-io/embedme
components: [i80, io_bus, ili9xxx, spi]
refresh: 1d
psram:
speed: 80MHz
output:
- platform: ledc
pin: GPIO42
id: backlight_pwm
- platform: gpio
pin: GPIO36
id: relay
light:
- platform: monochromatic
name: "Backlight"
id: backlight
output: backlight_pwm
restore_mode: ALWAYS_ON
- platform: binary
id: local_light
name: "Light"
output: relay
i80:
dc_pin: GPIO17
data_pins:
- GPIO6
- GPIO7
- GPIO15
- GPIO16
- GPIO10
- GPIO9
- ignore_strapping_warning: true
number: GPIO46
- ignore_strapping_warning: true
number: GPIO3
wr_pin: GPIO13
rd_pin: GPIO18
i2c:
sda: GPIO35
scl:
ignore_strapping_warning: true
number: GPIO0
display:
- id: langbon_L9
platform: ili9xxx
model: ST7789V
bus_type: i80
invert_colors: true
dimensions:
height: 320
width: 170
offset_width: 35
cs_pin: GPIO21
reset_pin: GPIO4
auto_clear_enabled: false
update_interval: never
rotation: 0
touchscreen:
platform: ft63x6
calibration:
x_min: 0
y_min: 3
x_max: 169
y_max: 319
on_touch:
- lambda: |-
ESP_LOGI("cal", "x=%d, y=%d, x_raw=%d, y_raw=%0d",
touch.x,
touch.y,
touch.x_raw,
touch.y_raw
);
- if:
condition: lvgl.is_paused
then:
- logger.log: "LVGL resuming"
- lvgl.resume:
- lvgl.page.show: main_page
- lvgl.widget.redraw
- light.turn_on: backlight
image:
- file: https://esphome.io/_static/favicon-512x512.png
id: boot_logo
resize: 150x150
type: RGB565
use_transparency: true
lvgl:
on_idle:
timeout: !lambda "return 10000;" # Turn off back light if idle for 10 secs
then:
- logger.log: "LVGL is idle"
- light.turn_off: backlight
- lvgl.pause:
show_snow: true # Prevent burn-in
bg_color: black
top_layer:
widgets:
- obj:
id: boot_screen
x: 0
y: 0
width: 100%
height: 100%
bg_color: 0xffffff
bg_opa: COVER
radius: 0
pad_all: 0
border_width: 0
widgets:
- image:
align: CENTER
src: boot_logo
y: -40
- spinner:
align: CENTER
y: 95
height: 50
width: 50
spin_time: 1s
arc_length: 60deg
arc_width: 8
indicator:
arc_color: 0x18bcf2
arc_width: 8
on_press:
- lvgl.widget.hide: boot_screen
pages:
- id: main_page
widgets:
- switch:
id: light_switch
align: CENTER
width: 90%
height: 15%
on_click:
light.toggle: local_light
The pin-out on the display board connector (thanks to openHASP):
IMPORTANT: You must supply both 5V and 3.3V pins.
