master-bedroom.yaml

esphome:
  name: master-bedroom-oled-display
  comment: Bedroom OLED with Glucose Levels

esp32:
  board: esp32dev
  framework:
    type: arduino

# Enable logging
logger:
  level: DEBUG
  
mqtt:
  broker: !secret mqtt_broker
  username: !secret mqtt_username
  password: !secret mqtt_password
  discovery: false # Only if you use the HA API usually
  id: mqtt_client

substitutions:
  room_name: 'Master Bedroom'

globals:
  - id: last_update_timestamp
    type: uint32_t
  - id: last_update_seconds
    type: uint32_t

# Enable Home Assistant API
api:

ota:

wifi:
  ssid: !secret 24_wifi_ssid
  password: !secret wifi_password
  manual_ip:
    static_ip: 192.168.1.74
    gateway: 192.168.1.1
    subnet: 255.255.255.0

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Master Bedroom Fallback Hotspot"
    password: "TUsyBlAuN0HV"

bluetooth_proxy:
  active: true

captive_portal:

time:
  - platform: homeassistant
    id: esptime

sensor:
  - platform: homeassistant
    id: glucose_level
    entity_id: sensor.dexcom_glucose_value
    on_value:
      - lambda: |-
          id(last_update_timestamp) = millis();

text_sensor:
  - platform: homeassistant
    id: glucose_trend
    entity_id: sensor.dexcom_glucose_trend

font:
  - file: "gfonts://Roboto"
    id: levels
    size: 48
  - file: "gfonts://Roboto"
    id: font_30
    size: 38
  - file: "gfonts://Roboto"
    id: mmol
    size: 8
  - file: "gfonts://Roboto"
    id: trend
    size: 14
  - file: "gfonts://Roboto"
    id: font_12
    size: 12
  - file: 'fonts/materialdesignicons-webfont.ttf' # From https://github.com/Templarian/MaterialDesign-Webfont/blob/master/fonts/materialdesignicons-webfont.ttf
    id: icon_font
    size: 36
    glyphs: [
      '󰁔', # arrow-right
      '󰁃', # arrow down right
      '󰁅', # arrow down
      '󰁜', # arrow right up
      '󰁝',  # arrow up
      '󰄿', # double up
      '󰄼', # double down
      '󰀪' #alert
    ]

i2c:
  sda: GPIO23 #yellow
  scl: GPIO19 #green
  scan: true
  frequency: 100kHz

display:
  - platform: ssd1306_i2c
    model: "SSD1306 128x64"
    reset_pin: GPIO0
    address: 0x3C
    id: my_display
    pages:
      - id: page1           
        lambda: |-
          it.printf(5, 0, id(levels), TextAlign::TOP_LEFT , "%.1f", id(glucose_level).state);
          it.printf(5, 50, id(font_12), "%i minutes ago", id(last_update_seconds)/60);

          if (id(glucose_trend).state == "rising quickly") {
            return it.print(90, 10, id(icon_font), "󰄿");
          }
          if (id(glucose_trend).state == "rising slightly") {
            return it.print(90, 10, id(icon_font), "󰁜");
          }
          if (id(glucose_trend).state == "rising") {
            return it.print(90, 10, id(icon_font), "󰁝");
          }
           if (id(glucose_trend).state == "falling") {
            return it.print(90, 10, id(icon_font), "󰁅");
          }
          if (id(glucose_trend).state == "falling slightly") {
            return it.print(90, 10, id(icon_font), "󰁃");
          }
          if (id(glucose_trend).state == "falling quickly") {
            return it.print(90, 10, id(icon_font), "󰄼");
          }
          if (id(glucose_trend).state == "steady") {
            return it.print(90, 10, id(icon_font), "󰁔");
          } 
          else {
            return it.print(90, 10, id(icon_font), "󰀪");
           }