#############################################
#############################################
# 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-leafbat"
  friendly_name: "Nissan Leaf 12V Battery Monitor"
  description_comment: "Nissan Leaf 12V Battery Monitor (when home)"
  api_key: !secret esp-leafbat_api_key #unfortunately you can't use substitutions in secrets names
  ota_pass: !secret esp-leafbat_ota_pass #unfortunately you can't use substitutions in secrets names
  wifi_ssid: !secret wifi_ssid
  wifi_password: !secret wifi_password
  fallback_ap_password: !secret fallback_ap_password

  #Add these if we are giving it a static ip, or remove them in the Wifi section
  #A static IP will speed things up slightly in that it doesn't have to negotiate DHCP
  static_ip_address: !secret esp-leafbat_static_ip
  static_ip_gateway: !secret esp-leafbat_gateway
  static_ip_subnet: !secret esp-leafbat_subnet

  mqtt_server: !secret mqtt_server
  mqtt_username: !secret mqtt_username
  mqtt_password: !secret mqtt_password
  mqtt_topic: "esphome" #main topic for the mqtt server, call it what you like
  mqtt_commandstopic: "viewroad-commands" #main topic for commands (ie sleep), call it what you like

  #web_server_username: !secret web_server_username
  #web_server_password: !secret web_server_password

  update_time: 10s #update time for for general temp sensors etc

#############################################
# ESPHome
# https://esphome.io/components/esphome.html
#############################################
esphome:
  name: ${devicename}
  friendly_name: ${friendly_name}
  comment: ${description_comment} #appears on the esphome page in HA
  min_version: 2024.6.0

#############################################
# 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

#uart:
#  id: uart_output
#  tx_pin: GPIO12
#  rx_pin: GPIO13
#  baud_rate: 9600

#############################################    
# 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:
  - platform: esphome
    password: ${ota_pass}

#############################################    
# Safe Mode
# Safe mode will detect boot loops
# https://esphome.io/components/safe_mode
#############################################  
safe_mode:

#############################################    
# Wifi Settings 
# https://esphome.io/components/wifi.html
#
# Power Save mode (can reduce wifi reliability)
# NONE (least power saving, Default for ESP8266)
# LIGHT (Default for ESP32)
# HIGH (most power saving)
#############################################  
wifi:
  ssid: ${wifi_ssid}
  password: ${wifi_password}
  #power_save_mode: LIGHT #https://esphome.io/components/wifi.html#wifi-power-save-mode
  manual_ip: #optional static IP address
    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: ${fallback_ap_password}
    ap_timeout: 30min #Time until it brings up fallback AP. default is 1min

#############################################    
# Web Portal for display and monitoring
#############################################   
web_server:
  port: 80
  #version: 2
  #include_internal: true
  #ota: false
  #auth:
    #username: ${web_server_username}
    #password: ${web_server_password}
    
#############################################
# MQTT Monitoring
# https://esphome.io/components/mqtt.html?highlight=mqtt
# MUST also have api enabled if you enable MQTT
#############################################
mqtt:
  broker: ${mqtt_server}
  topic_prefix: ${mqtt_topic}/${devicename}
  username: ${mqtt_username}
  password: ${mqtt_password}
  
  # Availability Topic
  birth_message:
    topic: ${mqtt_topic}/${devicename}/availability
    payload: online
  will_message:
    topic: ${mqtt_topic}/${devicename}/availability
    payload: offline

  # A way to prevent deep sleep using MQTT command
  on_message:
    - topic: ${mqtt_commandstopic}/${devicename}/deepsleep
      payload: 'OFF'
      then:
        - deep_sleep.prevent: deep_sleep_1
    - topic: ${mqtt_commandstopic}/${devicename}/deepsleep
      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

#time:
#  - platform: homeassistant
#    id: ha_time
#    timezone: Pacific/Auckland

#text_sensor:
#  - platform: template
#    name: "Current time"
#    id: current_time
#    lambda: return id(ha_time).now().strftime("%H%M");
#    lambda: |-
#      char str[17];
 #     time_t currTime = id(ha_time).now().timestamp;
 #     strftime(str, sizeof(str), "%Y-%m-%d %H:%M", localtime(&currTime));
 #     return  { str };
#    update_interval: ${update_time}

#############################################  
#############################################
# MAIN SENSORS
#############################################
#############################################  
sensor:
  #Quality of Wifi in dBm
  - platform: wifi_signal
    name: "WiFi Signal"
    id: wifi_strength
    update_interval: ${update_time}
    retain: true #Retain this as you'll have no value between sleeps otherwise
  #Analog sensor for voltage reading (A0)
  - platform: uptime
    name: "Uptime"
    update_interval: ${update_time}
    retain: true #Retain this as you'll have no value between sleeps otherwise
  - platform: adc
    pin: A0
    name: "Battery Voltage"
    id: battery_voltage
    #mqtt_id: battery_voltage
    update_interval: ${update_time}
    retain: true #Retain this as you'll have no value between sleeps otherwise
    # This set used a voltage divider with a 100k and a 4.7k R value
    filters:
      - multiply: 3.3 #D1 mini V divider, 3.3V -> 1V on esp8266
      - calibrate_linear: #Read values with voltmeter and bench supply
        - 0.72 -> 16.00
        - 0.68 -> 15.00
        - 0.63 -> 14.00
        - 0.59 -> 13.00
        - 0.55 -> 12.00
        - 0.51 -> 11.00
        - 0.45 -> 10.00
        - 0.40 -> 09.00
        - 0.36 -> 08.00
        - 0.32 -> 07.00
        - 0.28 -> 06.00
        - 0.23 -> 05.00
#    on_value: 
#      - logger.log:
#          level: INFO
#          format: "time,%s,battery,%.1f,wifi,%.1f"
#          args: [ 'id(ha_time).now()', 'id(battery_voltage).state', 'id(wifi_strength).state' ]

#      - uart.write:
#          id: uart_output
#          data: !lambda  char buf[128];
#                       sprintf(buf, "%s", id(battery_voltage).state);
#                       std::string s = buf;
#                       return std::vector<unsigned char>( s.begin(), s.end() );
#      - logger.log:
#          level: INFO
#          format: "time,%.1f,battery,%.1f,wifi,%.1f"
#          args: [ 'id(sntp_time).now()', 'id(battery_voltage).state', 'id(wifi_strength).state' ]