DSMR Logger 4.5 for esphome

dsmr-logger.yaml

esphome:
  name: dsmr-logger
  platform: ESP8266
  board: nodemcu

# Enable logging
logger:
  baud_rate: 0

# Enable Home Assistant API
api:

ota:
  password: "xxxxx"

wifi:
  ssid: "xxxxx"
  password: "xxxxx"

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Dsmr-Logger Fallback Hotspot"
    password: "xxxxx"

captive_portal:

uart:
  rx_pin: GPIO13
  baud_rate: 115200
  
output:
  - platform: gpio
    pin: GPIO12
    id: request_data
    
interval:
  - interval: 30s
    then:
      - output.turn_on: request_data
      - delay: 500ms
      - output.turn_off: request_data

sensor:
  - platform: dsmr
    energy_delivered_tariff1:
      name: Energy Consumed Tariff 1
      state_class: total_increasing
    energy_delivered_tariff2:
      name: Energy Consumed Tariff 2
      state_class: total_increasing
    power_delivered:
      name: Power Delivered
      state_class: measurement
      accuracy_decimals: 0
      filters:
       - multiply: 1000
    electricity_failures:
      name: Electricity Failures
    voltage_l1:
      name: Voltage L1
      state_class: measurement
    current_l1:
      name: Current L1
      state_class: measurement
    gas_delivered:
      name: Gas Delivered
      state_class: total_increasing

text_sensor:
  - platform: dsmr
    identification:
      name: "DSMR Identification"
    p1_version:
      name: "DSMR Version"

Based on the DSMRLogger 4.5 combined with a v5 smart meter.

Information used for the GPIO ports/logic;
https://willem.aandewiel.nl/index.php/2019/04/09/dsmr-logger-v4-slimme-meter-uitlezer/

Interval for data retrieval can be changed by modifying
interval: 30s

If it's an older smart meter (pre v4 for example). Baud rate has to be changed to 9600 (source)