teslawc3controller.yaml

esphome:
  name: teslawc3controller
  comment: "Tesla Wall Connector 3 controller"
  min_version: 2024.6.0
  includes:
    - ModbusTcpSensor.h

external_components:
  - source:
      type: git
      url: https://github.com/robertklep/esphome-custom-component
    components: [ custom, custom_component ]

esp32:
  board: esp32-s3-devkitc-1
  variant: esp32s3
  flash_size: 16MB
  cpu_frequency: 240MHz
  framework:
    type: arduino

wifi:
  networks:
    - ssid: <THE SSID OF YOUR WIFI NETWORK>
      password: <THE PASSWORD OF YOUR WIFI NETWORK>

web_server:
  port: 80

ota:
  platform: esphome



globals:
  - id: ct1_power_w
    type: float
    initial_value: "0.0"
  - id: ct2_power_w
    type: float
    initial_value: "0.0"
  - id: ct3_power_w
    type: float
    initial_value: "0.0"
  - id: ct4_power_w
    type: float
    initial_value: "0.0"
  - id: ct_total_w
    type: float
    initial_value: "0.0"

  - id: ct1_current_a
    type: float
    initial_value: "0.0"
  - id: ct2_current_a
    type: float
    initial_value: "0.0"
  - id: ct3_current_a
    type: float
    initial_value: "0.0"
  - id: ct4_current_a
    type: float
    initial_value: "0.0"
  - id: ct_total_a
    type: float
    initial_value: "0.0"

  - id: ct_limit
    type: float
    initial_value: "16.0"



switch:
  - platform: template
    name: "Charge at full power"
    id: charge_at_full_power
    optimistic: true



sensor:
  - platform: custom
    lambda: |-
      auto voltageSensor = new ModbusTcpSensorChild();
      App.register_component(voltageSensor);
      voltageSensor->set_name("Grid voltage");

      auto powerSensor = new ModbusTcpSensorChild();
      App.register_component(powerSensor);
      powerSensor->set_name("Power export/import");

      auto modbusSensor = new ModbusTcpSensorContainer("<THE IP ADDRESS OF YOUR SOLAREDGE INVERTER>", 1502, 40195, 5000);
      App.register_component(modbusSensor);
      modbusSensor->set_name("Modbus status");
      
      modbusSensor->voltageSensor = voltageSensor;
      modbusSensor->powerSensor = powerSensor;

      return {voltageSensor, powerSensor};

    sensors:
      - name: "Grid voltage"
        id: grid_voltage
      - name: "Power export/import"
        id: external_power_flow
        on_value:
          then:
            - lambda: |-
                float volts;
                float watts;
                float amperes;

                if(id(charge_at_full_power).state)
                {
                  volts = 235;
                  amperes = (float)id(ct_limit);
                }
                else
                {
                  volts = (isnan(id(grid_voltage).state) || id(grid_voltage).state < 100.0f || id(grid_voltage).state > 240.0f)
                                  ? 230.0f
                                  : id(grid_voltage).state;

                  watts = isnan(id(external_power_flow).state)
                                  ? 0.0f
                                  : id(external_power_flow).state;

                  amperes = watts / volts;
                }

                amperes = id(ct_limit) - amperes;
                watts = amperes * volts;

                id(ct1_current_a) = amperes;
                id(ct2_current_a) = id(ct3_current_a) = id(ct4_current_a) = 0;
                id(ct_total_a)    = id(ct1_current_a) + id(ct2_current_a) + id(ct3_current_a) + id(ct4_current_a);

                id(ct1_power_w)   = watts;
                id(ct2_power_w)   = id(ct3_power_w) = id(ct4_power_w) = 0;
                id(ct_total_w)    = id(ct1_power_w) + id(ct2_power_w) + id(ct3_power_w) + id(ct4_power_w);



uart:
  - id: wc_uart
    tx_pin: GPIO10
    rx_pin: GPIO17
    baud_rate: 115200
    data_bits: 8
    parity: NONE
    stop_bits: 1

modbus:
  - id: wc_mb
    uart_id: wc_uart
    role: server

modbus_controller:
  - id: wc_mb_server
    modbus_id: wc_mb
    address: 1
    server_registers:
      # Serial number / MAC address
      - { address: 1, value_type: U_WORD, read_lambda: 'return 0x3078;' }
      - { address: 2, value_type: U_WORD, read_lambda: 'return 0x3030;' }
      - { address: 3, value_type: U_WORD, read_lambda: 'return 0x3030;' }
      - { address: 4, value_type: U_WORD, read_lambda: 'return 0x3034;' }
      - { address: 5, value_type: U_WORD, read_lambda: 'return 0x3731;' }
      - { address: 6, value_type: U_WORD, read_lambda: 'return 0x3442;' }
      - { address: 7, value_type: U_WORD, read_lambda: 'return 0x3035;' }
      - { address: 8, value_type: U_WORD, read_lambda: 'return 0x3638;' }
      - { address: 9, value_type: U_WORD, read_lambda: 'return 0x3631;' }
      - { address: 10, value_type: U_WORD, read_lambda: 'return 0x0000;' }

      # "1.6.1‑Tesla"
      - { address: 11, value_type: U_WORD, read_lambda: 'return 0x312E;' }
      - { address: 12, value_type: U_WORD, read_lambda: 'return 0x362E;' }
      - { address: 13, value_type: U_WORD, read_lambda: 'return 0x312D;' }
      - { address: 14, value_type: U_WORD, read_lambda: 'return 0x5465;' }
      - { address: 15, value_type: U_WORD, read_lambda: 'return 0x736C;' }
      - { address: 16, value_type: U_WORD, read_lambda: 'return 0x6100;' }
 
      # Four reserved words (all 0xFFFF)
      - { address: 17, value_type: U_WORD, read_lambda: 'return 0xFFFF;' }
      - { address: 18, value_type: U_WORD, read_lambda: 'return 0xFFFF;' }
      - { address: 19, value_type: U_WORD, read_lambda: 'return 0xFFFF;' }
      - { address: 20, value_type: U_WORD, read_lambda: 'return 0xFFFF;' }

      # "012.00020A.H"
      - { address: 21, value_type: U_WORD, read_lambda: 'return 0x3031;' }
      - { address: 22, value_type: U_WORD, read_lambda: 'return 0x322E;' }
      - { address: 23, value_type: U_WORD, read_lambda: 'return 0x3030;' }
      - { address: 24, value_type: U_WORD, read_lambda: 'return 0x3032;' }
      - { address: 25, value_type: U_WORD, read_lambda: 'return 0x3041;' }
      - { address: 26, value_type: U_WORD, read_lambda: 'return 0x2E48;' }
      - { address: 27, value_type: U_WORD, read_lambda: 'return 0x0000;' }
 
      # Reserved
      - { address: 28, value_type: U_WORD, read_lambda: 'return 0xFFFF;' }

      # Meter number "90954"
      - { address: 29, value_type: U_WORD, read_lambda: 'return 0x3930;' }
      - { address: 30, value_type: U_WORD, read_lambda: 'return 0x3935;' }
      - { address: 31, value_type: U_WORD, read_lambda: 'return 0x3400;' }

      # Model? "VAH4810AB0231"
      - { address: 32, value_type: U_WORD, read_lambda: 'return 0x5641;' }
      - { address: 33, value_type: U_WORD, read_lambda: 'return 0x4834;' }
      - { address: 34, value_type: U_WORD, read_lambda: 'return 0x3831;' }
      - { address: 35, value_type: U_WORD, read_lambda: 'return 0x3041;' }
      - { address: 36, value_type: U_WORD, read_lambda: 'return 0x4230;' }
      - { address: 37, value_type: U_WORD, read_lambda: 'return 0x3233;' }
      - { address: 38, value_type: U_WORD, read_lambda: 'return 0x3100;' }

      # eight more reserved (0xFFFF)
      - { address: 39, value_type: U_WORD, read_lambda: 'return 0xFFFF;' }
      - { address: 40, value_type: U_WORD, read_lambda: 'return 0xFFFF;' }
      - { address: 41, value_type: U_WORD, read_lambda: 'return 0xFFFF;' }
      - { address: 42, value_type: U_WORD, read_lambda: 'return 0xFFFF;' }
      - { address: 43, value_type: U_WORD, read_lambda: 'return 0xFFFF;' }
      - { address: 44, value_type: U_WORD, read_lambda: 'return 0xFFFF;' }
      - { address: 45, value_type: U_WORD, read_lambda: 'return 0xFFFF;' }
      - { address: 46, value_type: U_WORD, read_lambda: 'return 0xFFFF;' }

      # Mac "04:71:4B:05:68:61"
      - { address: 47, value_type: U_WORD, read_lambda: 'return 0x3034;' }
      - { address: 48, value_type: U_WORD, read_lambda: 'return 0x3A37;' }
      - { address: 49, value_type: U_WORD, read_lambda: 'return 0x313A;' }
      - { address: 50, value_type: U_WORD, read_lambda: 'return 0x3442;' }
      - { address: 51, value_type: U_WORD, read_lambda: 'return 0x3A30;' }
      - { address: 52, value_type: U_WORD, read_lambda: 'return 0x353A;' }
      - { address: 53, value_type: U_WORD, read_lambda: 'return 0x3638;' }
      - { address: 54, value_type: U_WORD, read_lambda: 'return 0x3A36;' }
      - { address: 55, value_type: U_WORD, read_lambda: 'return 0x3100;' }

      # CT1 power W
      - { address: 0x88, value_type: FP32, read_lambda: 'return id(ct1_power_w);' }

      # CT2 power W
      - { address: 0x8A, value_type: FP32, read_lambda: 'return id(ct2_power_w);' }

      # CT3 power W
      - { address: 0x8C, value_type: FP32, read_lambda: 'return id(ct3_power_w);' }

      # CT4 power W
      - { address: 0x8E, value_type: FP32, read_lambda: 'return id(ct4_power_w);' }

      # Aggregate watts
      - { address: 0x90, value_type: FP32, read_lambda: 'return id(ct_total_w);' }

      # Reserved
      - { address: 0x92, value_type: U_WORD, read_lambda: 'return 0;' }

      # CT1 current amps
      - { address: 0xF4, value_type: FP32, read_lambda: 'return id(ct1_current_a);' }

      # CT2 current amps
      - { address: 0xF6, value_type: FP32, read_lambda: 'return id(ct2_current_a);' }

      # CT3 current amps
      - { address: 0xF8, value_type: FP32, read_lambda: 'return id(ct3_current_a);' }

      # CT4 current amps
      - { address: 0xFA, value_type: FP32, read_lambda: 'return id(ct4_current_a);' }

      # Total amps
      - { address: 0xFC, value_type: FP32, read_lambda: 'return id(ct_total_a);' }

      # Initialization handshake
      - { address: 40002, value_type: U_WORD, read_lambda: 'return 0x0001;' }
      - { address: 40003, value_type: U_WORD, read_lambda: 'return 0x0042;' }
      - { address: 40004, value_type: U_WORD, read_lambda: 'return 0x4765;' }
      - { address: 40005, value_type: U_WORD, read_lambda: 'return 0x6E65;' }
      - { address: 40006, value_type: U_WORD, read_lambda: 'return 0x7261;' }
      - { address: 40007, value_type: U_WORD, read_lambda: 'return 0x6300;' }