[RTL8710BX] [T102_V1.1] [BL0937] Digitaling 20A Power Monitor RTL8710BX t102-v1.1

substitutions:
  devicename: smartplug
  friendly_name: t102-v1.1-2
  device_description: Digitaling 20A Power Monitor RTL8710BX t102-v1.1
  current_res: "0.002" # Power monitoring calibration https://esphome.io/components/sensor/hlw8012.html
  voltage_div: "1600" # Power monitoring calibration


esphome:
  name: ${devicename}
  friendly_name: ${friendly_name}
  comment: ${device_description}

#Measured pinout
#pa05 is led (X)
#PA15 relay? (X)
#pa18 switch (X)
#pa 14 00 12 is BL0937


rtl87xx:
  board: wr2 # actually t102-v1.1 but https://github.com/libretiny-eu/libretiny/issues/247

# Enable logging
logger:

# Enable Home Assistant API
api:
  encryption:
    key: !secret api_encryption

ota:
  #password: !secret ota_password

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

  # Enable fallback hotspot in case wifi connection fails
  ap:
    ssid: ${friendly_name} Fallback Hotspot
    password: !secret wifi_ap_password
captive_portal:

web_server:
  port: 80
  auth:
    username: !secret web_server_username
    password: !secret web_server_password

# Enable time component for use by daily power sensor
time:
  - platform: homeassistant
    id: homeassistant_time

binary_sensor:
# Button on the front is pressed and then toggle relay
  - platform: gpio
    device_class: power
    pin:
      number: PA18
      mode: INPUT_PULLUP
      inverted: True
    name: Button
    on_press:
      - switch.toggle: relay
      - switch.toggle: statusled

text_sensor:
# Reports the ESPHome Version with compile date
  - platform: version
    name: ESPHome Version
  - platform: libretiny
    version:
      name: LibreTiny Version


switch:
# Relay itself
  - platform: gpio
    name: ${friendly_name}
    pin: PA15
    id: relay
    restore_mode: RESTORE_DEFAULT_OFF
  - platform: gpio
    name: statusled
    pin: PA05
    id: statusled
    restore_mode: RESTORE_DEFAULT_OFF
    inverted: true


#bootloop fix: https://github.com/libretiny-eu/libretiny/issues/155#issuecomment-1826470433
#https://esphome.io/components/sensor/hlw8012.html
sensor:
  - platform: hlw8012
    model: BL0937
    sel_pin:
       number: PA14
       inverted: true
    cf_pin: PA00
    cf1_pin: PA12
    current:
      name: "HLW8012 Current"
    voltage:
      name: "HLW8012 Voltage"
    power:
      name: "HLW8012 Power"
    update_interval: 1s
    initial_mode: CURRENT
    change_mode_every: 8
    current_resistor: ${current_res}
    voltage_divider: ${voltage_div}