Avoid compile errors in case MQTT is turned off

espdm.cpp

@@ -392,6 +392,7 @@ namespace esphome
 
                 ESP_LOGI(TAG, "Received valid data");
 
+#ifdef USE_MQTT
                 if(this->mqtt_client != NULL)
                 {
                     this->mqtt_client->publish_json(this->topic, [=](JsonObject root)
@@ -434,6 +435,7 @@ namespace esphome
                         }
                     });
                 }
+#endif // USE_MQTT
             }
         }
 
@@ -495,11 +497,13 @@ namespace esphome
             this->timestamp = timestamp;
         }
 
+#ifdef USE_MQTT
         void DlmsMeter::enable_mqtt(mqtt::MQTTClientComponent *mqtt_client, const char *topic)
         {
             this->mqtt_client = mqtt_client;
             this->topic = topic;
         }
+#endif // USE_MQTT
 
         void DlmsMeter::log_packet(std::vector<uint8_t> data)
         {

espdm.h

@@ -23,10 +23,11 @@ namespace esphome
                 void set_active_energy_sensors(sensor::Sensor *active_energy_plus, sensor::Sensor *active_energy_minus);
                 void set_reactive_energy_sensors(sensor::Sensor *reactive_energy_plus, sensor::Sensor *reactive_energy_minus);
                 void set_timestamp_sensor(text_sensor::TextSensor *timestamp);
+                void set_key(uint8_t key[], size_t keyLength);
 
+#ifdef USE_MQTT
                 void enable_mqtt(mqtt::MQTTClientComponent *mqtt_client, const char *topic);
-
-                void set_key(uint8_t key[], size_t keyLength);
+#endif
 
             private:
                 std::vector<uint8_t> receiveBuffer; // Stores the packet currently being received
@@ -59,12 +60,14 @@ namespace esphome
 
                 text_sensor::TextSensor *timestamp = NULL; // Text sensor for the timestamp value
 
-                mqtt::MQTTClientComponent *mqtt_client = NULL;
 
                 uint16_t swap_uint16(uint16_t val);
                 uint32_t swap_uint32(uint32_t val);
                 void log_packet(std::vector<uint8_t> data);
                 void abort();
+#ifdef USE_MQTT
+                mqtt::MQTTClientComponent *mqtt_client = NULL;
+#endif
         };
     }
 }

meter01-noMQTT-HA.example.yaml

@@ -0,0 +1,160 @@
+esphome:
+  name: meter01
+  platform: ESP32
+  board: esp32-poe
+  includes:
+    - ./esphome-dlms-meter
+
+ethernet:
+  type: LAN8720
+  mdc_pin: GPIO23
+  mdio_pin: GPIO18
+  clk_mode: GPIO17_OUT
+  phy_addr: 0
+  power_pin: GPIO12
+  domain: .example.org
+
+# Enable logging
+logger:
+  level: INFO
+#  tx_buffer_size: 2048 # Only needed when logging large packets
+
+# Enable Home Assistant API if not using MQTT
+api:
+#  password: "1234"
+#  reboot_timeout: 0s
+
+ota:
+  password: "1234"
+
+#web_server:
+#  port: 80
+
+uart:
+  tx_pin: GPIO4
+  rx_pin: GPIO36
+  baud_rate: 2400
+  rx_buffer_size: 1024 # Needed to receive the large packets send by the smart meter
+  id: mbus
+
+sensor:
+  - platform: template
+    id: meter01_voltage_l1
+    name: meter01_voltage_l1
+    unit_of_measurement: V
+    accuracy_decimals: 1
+    device_class: "voltage"
+    state_class: "measurement"
+  - platform: template
+    id: meter01_voltage_l2
+    name: meter01_voltage_l2
+    unit_of_measurement: V
+    accuracy_decimals: 1
+    device_class: "voltage"
+    state_class: "measurement"
+  - platform: template
+    id: meter01_voltage_l3
+    name: meter01_voltage_l3
+    unit_of_measurement: V
+    accuracy_decimals: 1
+    device_class: "voltage"
+    state_class: "measurement"
+
+  - platform: template
+    id: meter01_current_l1
+    name: meter01_current_l1
+    unit_of_measurement: A
+    accuracy_decimals: 2
+    device_class: "current"
+    state_class: "measurement"
+  - platform: template
+    id: meter01_current_l2
+    name: meter01_current_l2
+    unit_of_measurement: A
+    accuracy_decimals: 2
+    device_class: "current"
+    state_class: "measurement"
+  - platform: template
+    id: meter01_current_l3
+    name: meter01_current_l3
+    unit_of_measurement: A
+    accuracy_decimals: 2
+    device_class: "current"
+    state_class: "measurement"
+
+  - platform: template
+    id: meter01_active_power_plus
+    name: meter01_active_power_plus
+    unit_of_measurement: W
+    accuracy_decimals: 0
+    device_class: "power"
+    state_class: "measurement"
+  - platform: template
+    id: meter01_active_power_minus
+    name: meter01_active_power_minus
+    unit_of_measurement: W
+    accuracy_decimals: 0
+    device_class: "power"
+    state_class: "measurement"
+
+  - platform: template
+    id: meter01_active_energy_plus
+    name: meter01_active_energy_plus
+    unit_of_measurement: Wh
+    accuracy_decimals: 0
+    device_class: "energy"
+    state_class: "total_increasing"
+  - platform: template
+    id: meter01_active_energy_minus
+    name: meter01_active_energy_minus
+    unit_of_measurement: Wh
+    accuracy_decimals: 0
+    device_class: "energy"
+    state_class: "total_increasing"
+
+  - platform: template
+    id: meter01_reactive_energy_plus
+    name: meter01_reactive_energy_plus
+    unit_of_measurement: Wh
+    accuracy_decimals: 0
+    device_class: "energy"
+    state_class: "total_increasing"
+  - platform: template
+    id: meter01_reactive_energy_minus
+    name: meter01_reactive_energy_minus
+    unit_of_measurement: Wh
+    accuracy_decimals: 0
+    device_class: "energy"
+    state_class: "total_increasing"
+
+text_sensor:
+  - platform: template
+    id: meter01_timestamp
+    name: meter01_timestamp
+
+#mqtt:
+# broker: none
+#  id: mqtt_broker_off
+
+custom_component:
+  - lambda: |-
+
+      auto dlms_meter = new esphome::espdm::DlmsMeter(id(mbus));
+
+      uint8_t key[] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+      dlms_meter->set_key(key, 16); # Pass your decryption key and key length here
+
+      dlms_meter->set_voltage_sensors(id(meter01_voltage_l1), id(meter01_voltage_l2), id(meter01_voltage_l3)); // Set sensors to use for voltage (optional)
+
+      dlms_meter->set_current_sensors(id(meter01_current_l1), id(meter01_current_l2), id(meter01_current_l3)); // Set sensors to use for current (optional)
+
+      dlms_meter->set_active_power_sensors(id(meter01_active_power_plus), id(meter01_active_power_minus)); // Set sensors to use for active power (optional)
+
+      dlms_meter->set_active_energy_sensors(id(meter01_active_energy_plus), id(meter01_active_energy_minus)); // Set sensors to use for active energy (optional)
+      dlms_meter->set_reactive_energy_sensors(id(meter01_reactive_energy_plus), id(meter01_reactive_energy_minus)); // Set sensors to use for reactive energy (optional)
+
+      dlms_meter->set_timestamp_sensor(id(meter01_timestamp)); // Set sensor to use for timestamp (optional)
+
+      // dlms_meter->enable_mqtt(id(mqtt_broker), "meter01/data"); // Enable grouped together MQTT report, useful to get exact time with each data for storing results in InfluxDB
+
+      return {dlms_meter};