#############################################
#############################################
# BYD ATTO3 12V Battery Monitor 
# Monitoring the status of a vehicle 12V battery with 
# an esp8266 (D1 Mini).  It will obviously only
# transmit when the vehicle is within wifi range. 
# Voltage is measured with a resistor voltage divider
# into the analogue GPIO on the esp8266.
# https://zorruno.com/2022/vehicle-12v-battery-monitoring/
##############################################
#############################################

#############################################
# Variable Substitutions
#############################################
substitutions:
  devicename: "esp-attobat"
  friendly_name: "Atto3 12V Battery Monitor"
  description_comment: "Atto3 12V Battery Monitor (when home)"
  api_key: !secret esp-attobat_api_key #unfortunately you can't use substitutions in secrets names
  ota_pass: !secret esp-attobat_ota_pass #unfortunately you can't use substitutions in secrets names
  mqtt_topic: "esphome" #main topic for the mqtt server, call it what you like
  update_time: 30s #update time for for temp sensors etc
  #Add these if we are giving it a static ip, or remove them in the Wifi section
  static_ip_address: !secret esp-attobat_static_ip
  static_ip_gateway: !secret esp-attobat_gateway
  static_ip_subnet: !secret esp-attobat_subnet

#############################################
# ESPHome
#############################################  
esphome:
  name: $devicename
  comment: ${description_comment} #appears on the esphome page in HA

#############################################
# ESP Platform and Framework
# https://esphome.io/components/esp8266.html
# https://esphome.io/components/esp32.html
############################################# 
esp8266:
  board: d1_mini
  framework:
    version: latest #recommended, latest or dev

#############################################    
# ESPHome Logging Enable
# https://esphome.io/components/logger.html
############################################# 
logger:
  level: INFO  #INFO Level suggested, or DEBUG for testing
  #baud_rate: 0 #set to 0 for no logging via UART, needed if you are using it for other serial things (eg PZEM)
  #esp8266_store_log_strings_in_flash: false
  #tx_buffer_size: 64

#############################################    
# Enable the Home Assistant API
# https://esphome.io/components/api.html
#############################################  
api:
  encryption:
    key: ${api_key}

#############################################    
# Enable Over the Air Update Capability
# https://esphome.io/components/ota.html?highlight=ota
#############################################  
ota:
  safe_mode: true  #Safe mode will detect boot loops
  password: ${ota_pass}

#############################################    
# Wifi Settings 
# https://esphome.io/components/wifi.html
#############################################  
wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  #power_save_mode: LIGHT #https://esphome.io/components/wifi.html#wifi-power-save-mode
  # Static IP (for lower power/quicker on time)
  manual_ip:
    static_ip: ${static_ip_address}
    gateway: ${static_ip_gateway}
    subnet: ${static_ip_subnet}
  ap:   #Details for fallback hotspot (captive portal) in case wifi connection fails https://esphome.io/components/wifi.html#access-point-mode
    ssid: ${devicename} fallback AP
    password: !secret fallback_ap_password
    ap_timeout: 5min #default is 1min
captive_portal: # Fallback captive portal https://esphome.io/components/captive_portal.html

#############################################    
# Web Portal for display and monitoring
#############################################   
web_server:
  port: 80
  version: 2
  include_internal: true
  ota: false
  auth:
    username: !secret web_server_username
    password: !secret web_server_password
    
#############################################
# MQTT Monitoring
# https://esphome.io/components/mqtt.html?highlight=mqtt
# MUST also have api enabled if you enable MQTT
#############################################
mqtt:
  broker: !secret mqtt_server
  topic_prefix: ${mqtt_topic}/${devicename}
  #username: !secret mqtt_username
  #password: !secret mqtt_password
  #
  # Availability Topic
  #birth_message:
  #  topic: esphome/esp-leafbat2/availability
  #  payload: online
  #will_message:
  #  topic: esphome/esp-leafbat2/availability
  #  payload: offline
  # A way to prevent deep sleep using MQTT command
  on_message:
    - topic: viewroad-commands/attobat/deepsleepoff
      payload: 'ON'
      then:
        - deep_sleep.prevent: deep_sleep_1
    - topic: viewroad-commands/attobat/deepsleepon
      payload: 'ON'
      then:
        - deep_sleep.enter: deep_sleep_1

########################################    
# Deep Sleep
# https://esphome.io/components/deep_sleep.html
########################################   
deep_sleep:
  run_duration: 20s
  sleep_duration: 5min
  id: deep_sleep_1
  
#############################################  
#############################################
# MAIN SENSORS
#############################################
#############################################  
sensor:
  # Quality of Wifi in dBm
  - platform: wifi_signal
    name: "WiFi Signal"
    update_interval: 10s
    retain: true
  # Analog sensor for voltage reading (A0)
  - platform: adc
    pin: A0
    name: "Battery Voltage"
    update_interval: 10s
    retain: true
    filters:
      #- multiply: 18.52 # trial and error calc/measure
      - calibrate_linear:
        - 0.41 -> 6.00
        - 0.48 -> 7.00
        - 0.54 -> 8.00
        - 0.61 -> 9.00
        - 0.68 -> 10.00
        - 0.75 -> 11.00
        - 0.81 -> 12.00
        - 0.88 -> 13.00
        - 0.94 -> 13.99
        - 0.99 -> 14.70