Hello Community, i’m just started to play around with esphome and i have a issue during saving state of my project. When i remove power to my wemos all global variables are cleaned without restore state after reboot.
for references i leave here my code thx.
esphome 2025.3.1
wemos d1 mini usbc
8x led matrix max7219
my purpose was to control led matrix via Web Server and via Home Assistant.
ESPHOME Basic Stuff
esphome:
name: d1-mini-dev-board
friendly_name: d1-mini-dev-board
on_boot:
priority: 600
then:
- lambda: |-
id(display_line_1) = id(display_line_1);
id(display_line_2) = id(display_line_2);
esp8266:
board: d1_mini
logger:
api:
encryption:
key: "e5T/X+qQlmp1WjOH/Qz3JT6GuMC3awlAD3em3T7pMMI="
ota:
- platform: esphome
password: "590034a7ff80704d91a10e94cab491b8"
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
ap:
ssid: "D1-Mini-Dev-Board"
password: ""
captive_portal:
# PINOUT AND MAX7219 SETTING
spi:
clk_pin: D5
mosi_pin: D7
id: spi_bus
display:
- platform: max7219digit
id: max7219_display
cs_pin: D8
spi_id: spi_bus
scroll_mode : STOP
scroll_enable: True
intensity : 5
num_chips: 8
num_chip_lines: 2
chip_lines_style: SNAKE
lambda: |-
it.intensity(id(brightness));
it.print(0, 0, id(myfont), id(display_line_1).c_str());
it.print(0, 8, id(myfont), id(display_line_2).c_str());
# UTILITIES FOR SETTING STUFF
globals:
- id: display_line_1
type: std::string
restore_value: yes
max_restore_data_length: 64
- id: display_line_2
type: std::string
restore_value: yes
max_restore_data_length: 30
- id: brightness
type: int
restore_value: yes
number:
- platform: template
name: "Brightness Ddjustment"
optimistic: true
id: display_brightness
icon: mdi:led-variant-on
min_value: 0
max_value: 15
restore_value: True
step: 1
on_value:
then:
- globals.set:
id: brightness
value: !lambda |-
return id(display_brightness).state;
text:
- platform: template
optimistic: true
id: display_line_1_label
name: "Display Line 1 Text"
mode: text
restore_value: true
on_value:
then:
- globals.set:
id: display_line_1
value: !lambda |-
return id(display_line_1_label).state;
- platform: template
optimistic: true
id: display_line_2_label
name: "Display Line 2 Text"
mode: text
restore_value: true
on_value:
then:
- globals.set:
id: display_line_2
value: !lambda |-
return id(display_line_2_label).state;
font:
- file: "pixelmix.ttf"
id: myfont
size: 7
web_server:
port: 80
version: 2
include_internal : True
ota: False
