esphome/tests/components/esp32_ble_server/common.yaml

esp32_ble_server:
  id: ble_server
  manufacturer_data: [0x72, 0x4, 0x00, 0x23]
  manufacturer: ESPHome
  model: Test
  on_connect:
    - lambda: |-
        ESP_LOGD("BLE", "Connection from %d", id);
  on_disconnect:
    - lambda: |-
        ESP_LOGD("BLE", "Disconnection from %d", id);
  services:
    - uuid: 2a24b789-7aab-4535-af3e-ee76a35cc12d
      advertise: false
      characteristics:
        - id: test_notify_characteristic
          description: "Notify characteristic"
          uuid: cad48e28-7fbe-41cf-bae9-d77a6c233423
          read: true
          notify: true
          value: [9, 9, 9]
          descriptors:
            - uuid: cad48e28-7fbe-41cf-bae9-d77a6c111111
              value: 123.1
              byte_length: 100
    - uuid: 2a24b789-7a1b-4535-af3e-ee76a35cc42d
      advertise: false
      characteristics:
        - id: test_change_characteristic
          uuid: 2a24b789-7a1b-4535-af3e-ee76a35cc11c
          read: true
          value: "Initial"
          description: "Change characteristic"
          descriptors:
            - uuid: 0x2312
              value: 0x12
              on_write:
                - lambda: |-
                    ESP_LOGD("BLE", "Descriptor received: %s from %d", std::string(x.begin(), x.end()).c_str(), id);
        - uuid: 2a24b789-7a1b-4535-af3e-ee76a35cc99a
          write: true
          on_write:
            then:
              - lambda: |-
                  ESP_LOGD("BLE", "Characteristic received: %s from %d", std::string(x.begin(), x.end()).c_str(), id);
              - ble_server.characteristic.set_value:
                  id: test_change_characteristic
                  value: !lambda 'return bytebuffer::ByteBuffer::wrap({0x00, 0x01, 0x02}).get_data();'
              - ble_server.characteristic.set_value:
                  id: test_change_characteristic
                  value: [1, 2, 3, 4]
              - ble_server.characteristic.notify:
                  id: test_notify_characteristic