ESPHome BTHome Pulse Meter Example

bthome-pulse-meter.yaml

esphome:
  name: power-meter
  on_boot:
    priority: -100
    then:
      - if:
          condition:
            switch.is_on: disable_wifi
          then:
            script.execute: schedule_disable_wifi

esp32:
  board: m5stack-atom

# Enable logging
logger:

# Enable Home Assistant API
api:
  reboot_timeout: 0s

wifi:
  reboot_timeout: 0s
  networks:
    - ssid: !secret wifi_ssid
      password: !secret wifi_password

esp32_ble_server:
  id: ble
  manufacturer: "Orange"
  manufacturer_data: [0x4C, 0, 0x23, 77, 0xF0]

time:
  - platform: homeassistant
    id: hatime
 
script:
  - id: schedule_disable_wifi
    mode: restart
    then:
      - delay: 5min
      - if:
          condition: 
            - switch.is_on: disable_wifi
          then:
            - wifi.disable

  - id: update_bthome_broadcast
    mode: single
    then:
      - lambda: |-
          // Get current power consumption in watts and total energy in kWh
          if (!id(energy_sensor).has_state()) {
            return;
          }
          int watts = ((int)roundf(id(power_sensor).state * 100000));
          int energy = ((int)roundf(id(energy_sensor).state * 1000));
          // Create points to enable little endian conversion
          uint8_t *pEnergy = (uint8_t*)&energy;
          uint8_t *pPower = (uint8_t*)&watts;
          // Create and send BTHome payload
          std::vector<uint8_t> service_data = {
            0xD2, 0xFC,                         // BTHome UUID
            0x40,                               // BTHome Device Information
            0x0A,                               // 3 byte energy type (kWh)
            pEnergy[0], pEnergy[1], pEnergy[2], // Total energy consumption (little endian)
            0x0B,                               // 3 byte power type (W)
            pPower[0], pPower[1], pPower[2]     // Instantaneous watts (little endian)
          };
          esphome::esp32_ble::global_ble->advertising_set_service_data(service_data);
          ESP_LOGD("BThome", "Sent Energy: %i, Power: %i", energy, watts);
          ESP_LOGD("BTHome", "Hex Energy: 0x%02X%02X%02X, Power: 0x%02X%02X%02X", pEnergy[0], pEnergy[1], pEnergy[2], pPower[0], pPower[1], pPower[2]);  

switch:
  - platform: template
    id: disable_wifi
    name: "Disable WiFi after boot"
    optimistic: True
    restore_mode: RESTORE_DEFAULT_OFF
    on_turn_on: 
      then:
        - script.execute: schedule_disable_wifi

sensor:
  - platform: pulse_meter
    id: power_sensor
    pin: GPIO26
    unit_of_measurement: 'kW'
    name: 'Electricity Usage'
    internal_filter: 100ms
    accuracy_decimals: 2
    filters:
      - multiply: 0.06
      - delta: 0.01
    on_value:
      then:
        - script.execute: update_bthome_broadcast
    total:
      name: "Electricity Total"
      id: energy_sensor
      unit_of_measurement: "kWh"
      device_class: "energy"
      state_class: "total_increasing"
      accuracy_decimals: 3
      filters:
        - multiply: 0.001
        - delta: 0.01
      on_value:
        then:
          - script.execute: update_bthome_broadcast