esphome:
  name: oekoboiler-interface
  friendly_name: Oekoboiler-Interface

esp8266:
  board: nodemcuv2


# Enable logging
logger:
  baud_rate: 0

# Enable Home Assistant API
api:
  encryption:
    key: !secret oekoboiler_encryptionkey
  reboot_timeout: 0s      

ota:
  - platform: esphome
    password: !secret oekoboiler_otapassword

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  power_save_mode: none  # Disable power saving
  fast_connect: true     # Skip scanning, connect faster
  reboot_timeout: 0s     # Disable auto-reboot on wifi loss
 

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Oekoboiler-Interface"
    password: !secret oekoboiler_fallbackpassword

captive_portal:

#web_server:
#  port: 80

# UART configuration for Modbus (0-based register addressing)
uart:
  id: mod_bus
  tx_pin: GPIO1  # D10/TX
  rx_pin: GPIO3  # D9/RX
  baud_rate: 9600
  stop_bits: 1
  data_bits: 8
  parity: NONE

# Modbus RTU
modbus:
  flow_control_pin: GPIO5  # D1 - DE/RE pin for MAX485
  id: modbus1
  send_wait_time: 200ms

modbus_controller:
  - id: oekoboiler
    address: 0x1
    modbus_id: modbus1
    setup_priority: -10
    update_interval: 10s
    command_throttle: 200ms

sensor:
  # WiFi Signal
  - platform: wifi_signal
    name: "WiFi Signal"
    update_interval: 60s

  # Uptime
  - platform: uptime
    name: "Uptime"
    update_interval: 60s

  # ========================================
  # INPUT REGISTERS (3x) - Documentation address MINUS 1
  # ========================================
  
  # A1 - Water Temperature (30001 -> 0)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Water Temperature"
    address: 0
    register_type: read
    value_type: S_WORD
    unit_of_measurement: "°C"
    device_class: temperature
    state_class: measurement
    accuracy_decimals: 1
    filters:
      - multiply: 0.1
    
  # A2 - Evaporator Temperature (30002 -> 1)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Evaporator Temperature"
    address: 1
    register_type: read
    value_type: S_WORD
    unit_of_measurement: "°C"
    device_class: temperature
    state_class: measurement
    accuracy_decimals: 1
    filters:
      - multiply: 0.1
    
  # A4 - Ambient Temperature (30003 -> 2)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Ambient Temperature"
    address: 2
    register_type: read
    value_type: S_WORD
    unit_of_measurement: "°C"
    device_class: temperature
    state_class: measurement
    accuracy_decimals: 1
    filters:
      - multiply: 0.1
    
  # A3 - Exhaust Temperature (30004 -> 3)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Exhaust Temperature"
    address: 3
    register_type: read
    value_type: S_WORD
    unit_of_measurement: "°C"
    device_class: temperature
    state_class: measurement
    accuracy_decimals: 1
    filters:
      - multiply: 0.1
    
  # A9 - Return Gas Temperature (30005 -> 4)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Return Gas Temperature"
    address: 4
    register_type: read
    value_type: S_WORD
    unit_of_measurement: "°C"
    device_class: temperature
    state_class: measurement
    accuracy_decimals: 1
    filters:
      - multiply: 0.1

  # ========================================
  # HOLDING REGISTERS (4x) - Read-only values
  # ========================================
  
  # Controller Status (41102 -> 1101)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Controller Status Raw"
    id: controller_status_raw
    address: 1101
    register_type: holding
    value_type: U_WORD
    internal: true
  
  # Operating Mode (41105 -> 1104)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Mode Raw"
    id: mode_raw
    address: 1104
    register_type: holding
    value_type: U_WORD
    internal: true
  
  # Econ Mode Time Window (41106 -> 1105)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Econ Mode Time Window"
    address: 1105
    register_type: holding
    value_type: U_WORD
    skip_updates: 4
  
  # Alarm sensors (41121-41133 -> 1120-1132)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Alarm A1 Sensor"
    address: 1120
    register_type: holding
    value_type: U_WORD
    internal: true
    id: alarm_a1

  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Alarm A2 Sensor"
    address: 1121
    register_type: holding
    value_type: U_WORD
    internal: true
    id: alarm_a2

  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Alarm A3 Sensor"
    address: 1122
    register_type: holding
    value_type: U_WORD
    internal: true
    id: alarm_a3

  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Alarm A6 Sensor"
    address: 1125
    register_type: holding
    value_type: U_WORD
    internal: true
    id: alarm_a6

  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Alarm A5 High Pressure"
    address: 1126
    register_type: holding
    value_type: U_WORD
    internal: true
    id: alarm_a5

  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Alarm A4 Sensor"
    address: 1127
    register_type: holding
    value_type: U_WORD
    internal: true
    id: alarm_a4

  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Water Temp Warning 55C"
    address: 1128
    register_type: holding
    value_type: U_WORD
    internal: true
    id: alarm_water_temp

  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Alarm A9 Sensor"
    address: 1129
    register_type: holding
    value_type: U_WORD
    internal: true
    id: alarm_a9

  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Alarm A8 Condensate"
    address: 1130
    register_type: holding
    value_type: U_WORD
    internal: true
    id: alarm_a8

binary_sensor:
  - platform: status
    name: "Connection Status"

  # ========================================
  # COILS (0x) - Documentation address MINUS 1
  # ========================================
  
  # Compressor (00001 -> 0)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Compressor Running"
    address: 1
    register_type: coil
    device_class: running
  
  # Heating Element (00002 -> 1)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Heating Element"
    address: 2
    register_type: coil
    device_class: heat
  
    # Fan (00004 -> 3)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Four-Way Valve"
    address: 3
    register_type: coil
    device_class: running

  # Fan (00004 -> 3)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Fan Running"
    address: 4
    register_type: coil
    device_class: running
  
  # ========================================
  # DISCRETE INPUTS (1x) - Documentation address MINUS 1
  # ========================================
  

  # Template binary sensors for alarms
  - platform: template
    name: "Alarm: A1 Water Temp Sensor"
    device_class: problem
    lambda: |-
      return id(alarm_a1).state != 0;

  - platform: template
    name: "Alarm: A2 Evaporator Sensor"
    device_class: problem
    lambda: |-
      return id(alarm_a2).state != 0;

  - platform: template
    name: "Alarm: A3 Ambient Sensor"
    device_class: problem
    lambda: |-
      return id(alarm_a3).state != 0;

  - platform: template
    name: "Alarm: A6 Heating Element"
    device_class: problem
    lambda: |-
      return id(alarm_a6).state != 0;

  - platform: template
    name: "Alarm: A5 High Pressure"
    device_class: problem
    lambda: |-
      return id(alarm_a5).state != 0;

  - platform: template
    name: "Alarm: A4 Exhaust Sensor"
    device_class: problem
    lambda: |-
      return id(alarm_a4).state != 0;

  - platform: template
    name: "Warning: Water Temperature 55°C"
    device_class: problem
    lambda: |-
      return id(alarm_water_temp).state != 0;

  - platform: template
    name: "Alarm: A9 Return Gas Sensor"
    device_class: problem
    lambda: |-
      return id(alarm_a9).state != 0;

  - platform: template
    name: "Alarm: A8 Condensate Overflow"
    device_class: problem
    lambda: |-
      return id(alarm_a8).state != 0;

text_sensor:
  - platform: template
    name: "Controller Status"
    lambda: |-
      int status = (int)id(controller_status_raw).state;
      switch(status) {
        case 0: return {"Power Off"};
        case 1: return {"Standby"};
        case 2: return {"Preheating"};
        case 3: return {"Heating"};
        case 4: return {"Before Defrost"};
        case 5: return {"Defrosting"};
        case 6: return {"After Defrost"};
        case 8: return {"Alarm"};
        default: return {"Unknown (" + to_string(status) + ")"};
      }
  
  - platform: template
    name: "Operating Mode"
    lambda: |-
      int mode = (int)id(mode_raw).state;
      switch(mode) {
        case 0: return {"Econ Mode"};
        case 1: return {"Auto Mode"};
        case 2: return {"Heater Mode"};
        default: return {"Unknown (" + to_string(mode) + ")"};
      }

switch:
  # ========================================
  # WRITABLE HOLDING REGISTERS - Switches
  # ========================================
  
  # PV Mode (40067 -> 66)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "PV Mode"
    address: 66
    register_type: holding
    bitmask: 1
    entity_category: config
    icon: "mdi:solar-power"

  # Heating Element Enable (40015 -> 14)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Heating Element Enable"
    address: 14
    register_type: holding
    bitmask: 1
    entity_category: config
    icon: "mdi:heating-coil"

  # Heating Element for Sterilization (40017 -> 16)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Sterilization Enable"
    address: 16
    register_type: holding
    bitmask: 1
    entity_category: config
    icon: "mdi:bacteria"

  # Heating Element in Econ Mode (40028 -> 27)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Heating Element in Econ Mode"
    address: 27
    register_type: holding
    bitmask: 1
    entity_category: config

  # Heat Pump in Heater Mode (40029 -> 28)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Heat Pump in Heater Mode"
    address: 28
    register_type: holding
    bitmask: 1
    entity_category: config

  # Save Status on Power Off (40061 -> 60)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Save Status on Power Off"
    address: 60
    register_type: holding
    bitmask: 1
    entity_category: config

  # Electronic Anode (40068 -> 67)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Electronic Anode"
    address: 67
    register_type: holding
    bitmask: 1
    entity_category: config

number:
  # ========================================
  # WRITABLE HOLDING REGISTERS - Numbers
  # ========================================
  
  # Set Temperature PV (40009 -> 8)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Target Temperature (PV Mode)"
    address: 8
    value_type: U_WORD
    unit_of_measurement: "°C"
    device_class: temperature
    min_value: 5
    max_value: 70
    step: 1
    mode: box
    use_write_multiple: true
    entity_category: config
    icon: "mdi:solar-power"
  
  # Set Temperature Normal (40010 -> 9)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Target Temperature (Normal)"
    address: 9
    value_type: U_WORD
    unit_of_measurement: "°C"
    device_class: temperature
    min_value: 5
    max_value: 70
    step: 1
    mode: box
    use_write_multiple: true
    entity_category: config
  
  # Set Temperature F62=0 (40011 -> 10)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Target Temperature (F62=0)"
    address: 10
    value_type: U_WORD
    unit_of_measurement: "°C"
    device_class: temperature
    min_value: 5
    max_value: 70
    step: 1
    mode: box
    use_write_multiple: true
    entity_category: config
  
  # Temperature Delta/Hysteresis (40012 -> 11)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Temperature Hysteresis"
    address: 11
    value_type: U_WORD
    unit_of_measurement: "°C"
    min_value: 1
    max_value: 20
    step: 1
    mode: box
    use_write_multiple: true
    entity_category: config
    icon: "mdi:thermometer-lines"
  
  # Ambient Temperature Shutdown (40013 -> 12)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Heat Pump Shutdown Temperature"
    address: 12
    value_type: S_WORD
    unit_of_measurement: "°C"
    device_class: temperature
    min_value: -10
    max_value: 5
    step: 1
    mode: box
    use_write_multiple: true
    entity_category: config
  
  # Maximum Temperature with Heat Pump (40014 -> 13)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Max Temperature Heat Pump"
    address: 13
    value_type: U_WORD
    unit_of_measurement: "°C"
    device_class: temperature
    min_value: 20
    max_value: 60
    step: 1
    mode: box
    use_write_multiple: true
    entity_category: config
  
  # Ambient Temperature for Heating Element Start (40016 -> 15)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Heating Element Start Temperature"
    address: 15
    value_type: U_WORD
    unit_of_measurement: "°C"
    device_class: temperature
    min_value: 10
    max_value: 20
    step: 1
    mode: box
    use_write_multiple: true
    entity_category: config
  
  # Sterilization Cycle (40018 -> 17)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Sterilization Cycle Hours"
    address: 17
    value_type: U_WORD
    unit_of_measurement: "h"
    min_value: 1
    max_value: 990
    step: 1
    mode: box
    use_write_multiple: true
    entity_category: config
    icon: "mdi:bacteria"
  
  # A1 Temperature Sensor Offset (40019 -> 18)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "A1 Sensor Offset"
    address: 18
    value_type: S_WORD
    unit_of_measurement: "°C"
    device_class: temperature
    min_value: -5
    max_value: 5
    step: 1
    mode: box
    use_write_multiple: true
    entity_category: config
  
  # Compressor Delay (40021 -> 20)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Compressor Delay"
    address: 20
    value_type: U_WORD
    unit_of_measurement: "min"
    min_value: 0
    max_value: 10
    step: 1
    mode: box
    use_write_multiple: true
    entity_category: config
  
  # Defrost Start Temperature (40031 -> 30)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Defrost Start Temperature"
    address: 30
    value_type: S_WORD
    unit_of_measurement: "°C"
    device_class: temperature
    min_value: -20
    max_value: 20
    step: 1
    mode: box
    use_write_multiple: true
    entity_category: config