Xiaomi Mijia BLE Sensors
========================

.. seo::
    :description: Instructions for setting up Xiaomi Mi Home (Mijia) bluetooth-based sensors in ESPHome.
    :image: xiaomi_mijia_logo.jpg
    :keywords: Xiaomi, Mi Home, Mijia, BLE, Bluetooth, HHCCJCY01, GCLS002, HHCCPOT002, LYWSDCGQ, LYWSD02, CGG1, LYWSD03MMC, CGD1, JQJCY01YM, MUE4094RT, WX08ZM, MHO, C401, MHOC401

The ``xiaomi_ble`` sensor platform lets you track the output of Xiaomi Bluetooth Low Energy devices using the :doc:`/components/esp32_ble_tracker`. This component will track, for example, the temperature, humidity, moisture, conductivity, illuminance, formaldehyde, mosquito tablet and battery level of the device every time the sensor sends out a BLE broadcast. Contrary to other implementations, ``xiaomi_ble`` listense passively to advertisement packets and does not pair with the device. Hence ESPHome has no impact on battery life.

Supported Devices
-----------------

HHCCJCY01
*********

MiFlora, Huahuacaocao, measures temperature, moisture, ambient light and nutrient levels in the soil.

.. figure:: images/xiaomi_hhccjcy01.jpg
    :align: center
    :width: 60.0%

Configuration example:

.. code-block:: yaml

    sensor:
      - platform: xiaomi_hhccjcy01
        mac_address: '94:2B:FF:5C:91:61'
        temperature:
          name: "Xiaomi HHCCJCY01 Temperature"
        moisture:
          name: "Xiaomi HHCCJCY01 Moisture"
        illuminance:
          name: "Xiaomi HHCCJCY01 Illuminance"
        conductivity:
          name: "Xiaomi HHCCJCY01 Soil Conductivity"
        battery_level:
          name: "Xiaomi HHCCJCY01 Battery Level"

.. note::

    Newer versions of HHCCJCY01 ship with firmware 3.2.1, and they
    `don't send the battery level data anymore <https://github.com/esphome/esphome/pull/1288#issuecomment-695809481>`__.

GCLS002
*******

VegTrug Grow Care Garden, Takasho, suitable for outside, similar to the MiFlora.

.. figure:: images/xiaomi_gcls002.jpg
    :align: center
    :width: 30.0%

Configuration example:

.. code-block:: yaml

    sensor:
      - platform: xiaomi_gcls002
        mac_address: "94:2B:FF:5C:91:61"
        temperature:
          name: "GCLS02 Temperature"
        moisture:
          name: "GCLS02 Moisture"
        conductivity:
          name: "GCLS02 Soil Conductivity"
        illuminance:
          name: "GCLS02 Illuminance"

HHCCPOT002
**********

FlowerPot, Huahuacaocao, RoPot, broadcasts moisture and conductivity

.. figure:: images/xiaomi_hhccpot002.jpg
    :align: center
    :width: 30.0%

Configuration example:

.. code-block:: yaml

    sensor:
      - platform: xiaomi_hhccpot002
        mac_address: "94:2B:FF:5C:91:61"
        moisture:
          name: "HHCCPOT002 Moisture"
        conductivity:
          name: "HHCCPOT002 Soil Conductivity"

LYWSDCGQ
********

Hygro thermometer, round body, segment LCD, broadcasts temperature, humidity and battery level.

.. figure:: images/xiaomi_lywsdcgq.jpg
    :align: center
    :width: 30.0%

Configuration example:

.. code-block:: yaml

    sensor:
      - platform: xiaomi_lywsdcgq
        mac_address: "7A:80:8E:19:36:BA"
        temperature:
          name: "LYWSDCGQ Temperature"
        humidity:
          name: "LYWSDCGQ Humidity"
        battery_level:
          name: "LYWSDCGQ Battery Level"

LYWSD02
*******

Hygro thermometer, rectangular body, e-ink display, broadcasts temperature, humidity and battery level.

.. figure:: images/xiaomi_lywsd02.jpg
    :align: center
    :width: 30.0%

- Battery Level, needs xiaomi firmware 1.1.2_0085

Configuration example:

.. code-block:: yaml

    sensor:
      - platform: xiaomi_lywsd02
        mac_address: "3F:5B:7D:82:58:4E"
        temperature:
          name: "LYWSD02 Temperature"
        humidity:
          name: "LYWSD02 Humidity"
        battery_level:
          name: "LYWSD02 Battery Level"

CGG1
****

Hygro thermometer, round body, e-ink display

.. figure:: images/xiaomi_cgg1.jpg
    :align: center
    :width: 30.0%

Configuration example:

.. code-block:: yaml

    sensor:
      - platform: xiaomi_cgg1
        mac_address: "7A:80:8E:19:36:BA"
        temperature:
          name: "CGG1 Temperature"
        humidity:
          name: "CGG1 Humidity"
        battery_level:
          name: "CGG1 Battery Level"

LYWSD03MMC
**********

Hygro thermometer, small square body, segment LCD, encrypted, broadcasts temperature, humidity and battery status.

.. figure:: images/xiaomi_lywsd03mmc.jpg
    :align: center
    :width: 30.0%

There are the following possibilities to operate this sensor:

1. Xiaomi stock firmware (requires a bindkey in order to decrypt the received data, see :ref:`obtaining_the_bindkey`)
2. Device flashed with `ATC MiThermometer <https://github.com/atc1441/ATC_MiThermometer>`__ custom firmware

   - "Mi Like" advertisement (dummy bindkey required)
   - "Custom" advertisement (no bindkey required)

Configuration example for Xiaomi stock firmware or ATC MiThermometer firmware set to "Mi Like" advertisement:

.. code-block:: yaml

    sensor:
      - platform: xiaomi_lywsd03mmc
        mac_address: "A4:C1:38:B1:CD:7F"
        bindkey: "eef418daf699a0c188f3bfd17e4565d9"
        temperature:
          name: "LYWSD03MMC Temperature"
        humidity:
          name: "LYWSD03MMC Humidity"
        battery_level:
          name: "LYWSD03MMC Battery Level"

Configuration example for ATC MiThermometer firmware set to "Custom" advertisement:

.. code-block:: yaml

    sensor:
      - platform: atc_mithermometer
        mac_address: "A4:C1:38:B1:CD:7F"
        temperature:
          name: "ATC Temperature"
        humidity:
          name: "ATC Humidity"
        battery_level:
          name: "ATC Battery-Level"
        battery_voltage:
          name: "ATC Battery-Voltage"

MHO-C401
**********

Hygro thermometer, square body, e-ink display, encrypted, broadcasts temperature, humidity and battery status. Requires a bindkey in order to decrypt the received data (see :ref:`obtaining_the_bindkey`).

.. figure:: images/xiaomi_mhoc401.jpg
    :align: center
    :width: 30.0%

( MHO-C201 doesn't have BT )

Configuration example:

.. code-block:: yaml

    sensor:
      - platform: xiaomi_mhoc401
        mac_address: "A4:C1:38:B1:CD:7F"
        bindkey: "eef418daf699a0c188f3bfd17e4565d9"
        temperature:
          name: "MHOC401 Temperature"
        humidity:
          name: "MHOC401 Humidity"
        battery_level:
          name: "MHOC401 Battery Level"

CGD1
****

Cleargrass (Qingping) alarm clock, segment LCD, encrypted, broadcasts temperature, humidity and battery status. Requires a bindkey in order to decrypt the received data (see :ref:`obtaining_the_bindkey`).

.. figure:: images/xiaomi_cgd1.jpg
    :align: center
    :width: 30.0%

Configuration example:

.. code-block:: yaml

    sensor:
      - platform: xiaomi_cgd1
        mac_address: "A4:C1:38:8C:34:B7"
        bindkey: "fe39106baeedb7c801e3d63c4396f97e"
        temperature:
          name: "CGD1 Temperature"
        humidity:
          name: "CGD1 Humidity"
        battery_level:
          name: "CGD1 Battery Level"

JQJCY01YM
*********

Xiaomi (Honeywell) formaldehyde sensor, OLED display, broadcasts temperature, humidity, formaldehyde concentration (mg/m³) and battery status.

.. figure:: images/xiaomi_jqjcy01ym.jpg
    :align: center
    :width: 30.0%

Configuration example:

.. code-block:: yaml

    sensor:
      - platform: xiaomi_jqjcy01ym
        mac_address: "7A:80:8E:19:36:BA"
        temperature:
          name: "JQJCY01YM Temperature"
        humidity:
          name: "JQJCY01YM Humidity"
        formaldehyde:
          name: "JQJCY01YM Formaldehyde"
        battery_level:
          name: "JQJCY01YM Battery Level"

WX08ZM
******

Mosquito Repellent Smart Version, broadcasts the tablet resource level, on/off state and battery level, implemented as a hybrid sensor, needs both ``sensor`` and ``binary_sensor`` in config.

.. figure:: images/xiaomi_wx08zm.jpg
    :align: center
    :width: 30.0%

Configuration example:

.. code-block:: yaml

    sensor:

    binary_sensor:
      - platform: xiaomi_wx08zm
        mac_address: "74:a3:4a:b5:07:34"
        tablet:
          name: "WX08ZM Mosquito Tablet"
        battery_level:
          name: "WX08ZM Battery Level"

MUE4094RT
*********

Xiaomi Philips BLE night light, broadcasts motion detection (detected/clear, on/off), default timeout is 5s, implemented as a hybrid sensor, needs both ``sensor`` and ``binary_sensor`` in config.

.. figure:: images/xiaomi_mue4094rt.jpg
    :align: center
    :width: 30.0%

Configuration example:

.. code-block:: yaml

    sensor:

    binary_sensor:
      - platform: xiaomi_mue4094rt
        name: "MUE4094RT Night Light"
        mac_address: "7A:80:8E:19:36:BA"
        timeout: "5s"

MJYD02YL-A
**********

Xiaomi Yeelight night light, in-shape replacement of MJYD02YL with BLE, broadcasts light on/off status, motion detection, idle time since last motion event and battery status. Requires a bindkey in order to decrypt the received data (see :ref:`obtaining_the_bindkey`). Implemented as a hybrid sensor, needs both ``sensor`` and ``binary_sensor`` in config.

.. figure:: images/xiaomi_mjyd02yla.jpg
    :align: center
    :width: 30.0%

Configuration example:

.. code-block:: yaml

    sensor:

    binary_sensor:
      - platform: xiaomi_mjyd02yla
        name: "MJYD02YL-A Night Light"
        mac_address: "50:EC:50:CD:32:02"
        bindkey: "48403ebe2d385db8d0c187f81e62cb64"
        idle_time:
          name: "MJYD02YL-A Idle Time"
        light:
          name: "MJYD02YL-A Light Status"
        battery_level:
          name: "MJYD02YL-A Battery Level"
        illuminance:
          name: "MJYD02YL-A Illuminance"

Setting Up Devices
------------------

Required:

- **mac_address** (MAC Address): The MAC address of the device.
- **bindkey** (string, 32 characters, case insensitive): The key to decrypt the BLE advertisements for encrypted sensor types

Optional with **name**, **id** (:ref:`config-id`) and all other options from :ref:`Sensor <config-sensor>`:

- **temperature**
- **humidity**
- **moisture**
- **illuminance**
- **conductivity**
- **tablet**
- **formaldehyde**
- **battery_level**

To find the MAC Address so that ESPHome can identify the device, you can create a simple configuration without any sensor entries:

.. code-block:: yaml

    esp32_ble_tracker:

After uploading, the ESP32 will immediately try to scan for BLE devices. When it detects a new sensor, it will automatically parse the BLE message print a message like this one:

.. code::

    Found device A4:C1:38:4E:16:78 RSSI=-78
      Address Type: PUBLIC
      Name: 'LYWSD03MMC'

It can sometimes take some time for the first BLE broadcast to be received. Once the device has been found, copy the address ``A4:C1:38:4E:16:78`` into a new platform entry like shown in the example configurations.

.. _obtaining_the_bindkey:

Obtaining The Bindkey
---------------------

To set up an encrypted device such as the LYWSD03MMC (with Xiaomi stock firmware) and CGD1, you first need to obtain the bind key. The ``xiaomi_ble`` sensor component is not able to automatically generate a bind key so other workarounds are necessary.

LYWSD03MMC
**********

If the LYWSD03MMC sensor is operated with the Xiaomi stock firmware, you can use the `TeLink flasher application <https://atc1441.github.io/TelinkFlasher.html>`__ to easily generate a new bind key and upload the key to the device without the need to flash a new firmware (see figure). For this, you load the flasher `webpage <https://atc1441.github.io/TelinkFlasher.html>`__ with a `supported browser <https://github.com/WebBluetoothCG/web-bluetooth/blob/master/implementation-status.md>`__ and connect the device by pressing "Connect". After the connection is established, you press the "Do Activation" button and the new key will be shown in the "Mi Bind Key" field. The key can be copied directly into the sensor YAML configuration.

.. figure:: images/telink_flasher.jpg
    :align: center
    :width: 100.0%

    Telink flasher application.

.. warning::

    The new bind key will work with ESPHome, but the Mi Home app will not recognise the sensor anymore once the device has been activated by the TeLink flasher application. To use the sensor again with the Xiaomi Mi Home app, the device needs to be removed and then re-added inside the Mi Home app.

Other encrypted devices
***********************

The easiest method (confirmed to work for LYWSD03MMC) is to use the `Telink flasher method <https://github.com/atc1441/ATC_MiThermometer>`__. The accompanying `video
<https://www.youtube.com/watch?v=NXKzFG61lNs>`_ shows how to wirelessly flash a LYWSD03MMC, or how to obtain the bind key of the stock firmware (watch till around 13:10). The custom firmware allows you to change several settings of the device, including the smiley and the advertising interval. Keep in mind that when flashing the custom firmware, you need to enable the 'Advertising Type' to be 'Mi Like' and to give ESPHome a dummy bind key, as it still expects one even though the custom firmware does not encrypt the data.

The other option is to use the original Mi Home app to add the sensor once. While adding the device, a new key is generated and uploaded into the Xiaomi cloud and to the device itself. Currently a chinese server needs to be selected as the rest of the world doesn't support most of these devices yet. Once generated, the key will not change again until the device is removed and re-added in the Xiaomi app.

In order to obtain the bind key, a SSL packet sniffer needs to be setup on either an Android phone or the iPhone. A good choice for Android is the `Remote PCAP <https://play.google.com/store/apps/details?id=com.egorovandreyrm.pcapremote&hl=en>`__ in combination with `Wireshark <https://www.wireshark.org/>`__. A tutorial on how to setup the Remote PCAP packet sniffer can be found `here <https://egorovandreyrm.com/pcap-remote-tutorial/>`__ and `here <https://github.com/ahpohl/xiaomi_lywsd03mmc>`__. Instructions how to obtain the key using an iPhone are `here <https://github.com/custom-components/sensor.mitemp_bt/blob/master/faq.md#my-sensors-ble-advertisements-are-encrypted-how-can-i-get-the-key>`__. Once the traffic between the Mi Home app and the Xiaomi servers has been recorded, the bind key will show in clear text:

.. code-block:: yaml

    packet: POST /app/device/bltbind

    "data" = "{"did":"blt.3.129q4nasgeg00","token":"20c665a7ff82a5bfb5eefc36","props":[{"type":"prop","key":"bind_key","value":"cfc7cc892f4e32f7a733086cf3443cb0"},   {"type":"prop","key":"smac","value":"A4:C1:38:8C:34:B7"}]}"

The ``bind_key`` is the 32 digits "value" item in the above output which needs to be inserted into the config file.


See Also
--------

- :doc:`/components/esp32_ble_tracker`
- :doc:`/components/sensor/index`
- :apiref:`xiaomi_lywsd03mmc/xiaomi_ble.h`
- Passive BLE monitor integration for Home Assistant (ble_monitor custom component) `<https://github.com/custom-components/ble_monitor>`__
  by `@Magalex2x14 <https://github.com/Magalex2x14>`__ and `@Ernst79 <https://github.com/Ernst79>`__
- Xiaomi LYWSD03MMC passive sensor readout `<https://github.com/ahpohl/xiaomi_lywsd03mmc>`__ by `@ahpohl <https://github.com/ahpohl>`__
- Custom firmware for the Xiaomi Thermometer LYWSD03MMC `<https://github.com/atc1441/ATC_MiThermometer>`__
- TeLink flasher application `<https://atc1441.github.io/TelinkFlasher.html>`__

- :ghedit:`Edit`
