esphome:
  name: oekoboiler-interface
  friendly_name: Oekoboiler Interface

esp8266:
  board: nodemcuv2

# Enable logging
logger:
  baud_rate: 0  # Disable UART logging since we're using it for Modbus

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

ota:
  - platform: esphome
    password: !secret oekoboiler_ota_password

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  
  # Enable fallback hotspot
  ap:
    ssid: "Oekoboiler Fallback"
    password: !secret oekoboiler_fallback_password

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

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

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

  # Temperature Sensors (Input Registers 3x) - 0-based addressing
  # A1 - Water Temperature (30001 -> register 1)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Water 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
    
  # A2 - Evaporator Temperature (30002 -> register 2)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Evaporator 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
    
  # A4 - Ambient Temperature (30003 -> register 3)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Ambient 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
    
  # A3 - Exhaust Temperature (30004 -> register 4)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Exhaust 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
    
  # A9 - Return Gas Temperature (30005 -> register 5)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Return Gas Temperature"
    address: 5
    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) - 0-based addressing
  # Set Temperature PV (40009 -> register 9)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Set Temperature PV"
    address: 9
    register_type: holding
    value_type: U_WORD
    unit_of_measurement: "°C"
    device_class: temperature
    state_class: measurement
  
  # Set Temperature Normal (40010 -> register 10)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Set Temperature Normal"
    id: set_temp_normal
    address: 10
    register_type: holding
    value_type: U_WORD
    unit_of_measurement: "°C"
    device_class: temperature
    state_class: measurement
  
  # Set Temperature at F62=0 (40011 -> register 11)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Set Temperature F62"
    address: 11
    register_type: holding
    value_type: U_WORD
    unit_of_measurement: "°C"
    device_class: temperature
    state_class: measurement
  
  # Temperature Delta/Hysteresis (40012 -> register 12)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Temperature Delta"
    id: temp_delta
    address: 12
    register_type: holding
    value_type: U_WORD
    unit_of_measurement: "°C"
  
  # Maximum Temperature with Heat Pump (40014 -> register 14)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Max Temperature Heat Pump"
    address: 14
    register_type: holding
    value_type: U_WORD
    unit_of_measurement: "°C"
    device_class: temperature
  
  # Compressor Delay (40021 -> register 21)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Compressor Delay"
    address: 21
    register_type: holding
    value_type: U_WORD
    unit_of_measurement: "min"

  # Controller Status (41102 -> register 1102)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Controller Status Raw"
    id: controller_status_raw
    address: 1102
    register_type: holding
    value_type: U_WORD
    internal: true
  
  # Operating Mode (41105 -> register 1105)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Mode Raw"
    id: mode_raw
    address: 1105
    register_type: holding
    value_type: U_WORD
    internal: true
  
  # Model (41001 -> register 1001)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Model"
    address: 1001
    register_type: holding
    value_type: U_WORD
  
  # Software Version (41002 -> register 1002)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Software Version"
    address: 1002
    register_type: holding
    value_type: U_WORD

# Binary Sensors
binary_sensor:
  # Connection status
  - platform: status
    name: "Connection Status"

  # Digital Outputs (Coils 0x) - 0-based addressing
  # Compressor (00001 -> coil 1)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Compressor Running"
    address: 1
    register_type: coil
    device_class: running
  
  # Heating Element (00002 -> coil 2)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Heating Element"
    address: 2
    register_type: coil
    device_class: heat
  
  # Four-way Valve (00003 -> coil 3)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Four-way Valve"
    address: 3
    register_type: coil
  
  # Fan (00004 -> coil 4)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Fan Running"
    address: 4
    register_type: coil
    device_class: running
  
  # Digital Inputs (Discrete Inputs 1x) - 0-based addressing
  # A6 - Heating Element Overheat (10006 -> discrete input 6)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Heating Element Overheat"
    address: 6
    register_type: discrete_input
    device_class: problem
  
  # A5 - Compressor High Pressure (10007 -> discrete input 7)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "High Pressure Alarm"
    address: 7
    register_type: discrete_input
    device_class: problem
  
  # A8 - Condensate Overflow (10008 -> discrete input 8)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Condensate Overflow"
    address: 8
    register_type: discrete_input
    device_class: problem

# Text Sensors
text_sensor:
  # Controller Status Text
  - 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) + ")"};
      }
  
  # Operating Mode Text
  - 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) + ")"};
      }

# Switches
switch:
  # PV Mode (40067 -> register 67)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "PV Mode"
    address: 67
    register_type: holding
    bitmask: 1
    entity_category: config
    icon: "mdi:solar-power"

  # Heating Element Enable (40015 -> register 15)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Heating Element Enable"
    address: 15
    register_type: holding
    bitmask: 1
    entity_category: config
    icon: "mdi:heating-coil"

  # Heating Element for Sterilization (40017 -> register 17)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Sterilization Enable"
    address: 17
    register_type: holding
    bitmask: 1
    entity_category: config

# Number Controls
number:
  # Set Temperature Normal (40010 -> register 10)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Target Temperature"
    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
  
  # Set Temperature PV (40009 -> register 9)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Target Temperature PV"
    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
  
  # Temperature Delta (40012 -> register 12)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Temperature Hysteresis"
    address: 12
    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 -> register 13)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Heat Pump Shutdown Temperature"
    address: 13
    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
  
  # Sterilization Cycle (40018 -> register 18)
  - platform: modbus_controller
    modbus_controller_id: oekoboiler
    name: "Sterilization Cycle Hours"
    address: 18
    value_type: U_WORD
    unit_of_measurement: "hours"
    min_value: 1
    max_value: 990
    step: 1
    mode: box
    use_write_multiple: true
    entity_category: config