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235 lines
8.9 KiB
ReStructuredText
235 lines
8.9 KiB
ReStructuredText
PVVX MiThermometer Display
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==========================
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.. seo::
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:description: Instructions for setting up BLE devices with PVVX MiThermometer custom firmware as displays.
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:image: /components/sensor/images/xiaomi_lywsd03mmc.jpg
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The ``pvvx_mithermometer`` display platform allows you to use devices running the `ATC_MiThermometer firmware <https://github.com/pvvx/ATC_MiThermometer>`__ by pvvx as display drivers with ESPHome.
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.. figure:: /components/sensor/images/xiaomi_lywsd03mmc.jpg
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:align: center
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:width: 75.0%
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Xiaomi LYWSD03MMC.
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The data to be displayed is transmitted as external data via BLE.
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To do this, a ``ble_client`` component must be set up.
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This component can also synchronize the time of the pvvx device by transmitting a timestamp on each connection.
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After the data has been transmitted, the BLE connection is terminated in order to be able to receive the advertising data required for the ``pvvx_mithermometer`` sensor platform.
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The pvvx firmware refreshes the screen periodically (can be set as minimum LCD refresh rate in the firmware configuration).
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By default, the internal sensor data and, if available and valid (``validity_period``), the external data are switched every 2.5 s.
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Further firmware configuration makes it possible to activate other display modes such as time and battery status.
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The firmware configuration can be changed via browser using `TelinkMiFlasher.html <https://pvvx.github.io/ATC_MiThermometer/TelinkMiFlasher.html>`__.
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.. code-block:: yaml
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# Example configuration entry
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esp32_ble_tracker:
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ble_client:
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- mac_address: "A4:C1:38:B1:CD:7F"
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id: pvvx_ble_display
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display:
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- platform: pvvx_mithermometer
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ble_client_id: pvvx_ble_display
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lambda: |-
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it.print_bignum(23.1);
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it.print_unit(pvvx_mithermometer::UNIT_DEG_C);
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it.print_smallnum(33);
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it.print_percent(true);
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it.print_happy(true);
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it.print_bracket(true);
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Configuration variables:
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------------------------
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- **ble_client_id** (**Required**, :ref:`config-id`): ID of the associated BLE client.
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- **time_id** (*Optional*, :ref:`config-id`): ID of a :doc:`/components/time/index`. If set, the time will be synchronized with every connection.
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- **disconnect_delay** (*Optional*, :ref:`config-time`): The amount of time the BLE connection is maintained before being disconnected again. Defaults to ``5s``.
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- **update_interval** (*Optional*, :ref:`config-time`): The interval to transmit the display data. Defaults to ``60s``.
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- **validity_period** (*Optional*, :ref:`config-time`): The time periode for which the pvvx device should display the information. Defaults to ``5min``.
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- **lambda** (*Optional*, :ref:`lambda <config-lambda>`): The lambda to use to define the information to be displayed.
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See :ref:`display-pvvx_mithermometer_lambda` for more information.
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- **auto_clear_enabled** (*Optional*, boolean): Whether to automatically clear the display data before each lambda call,
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or to keep the existing display content (must overwrite explicitly, e.g., only on data change). Defaults to ``true``.
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- **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation.
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.. _display-pvvx_mithermometer_lambda:
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Rendering Lambda
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----------------
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The ``pvvx_mithermometer`` displays can only show two numbers with optional units and a smiley face. Therefore, the API is tailord to these limitations.
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In the lambda you're passed a variable called ``it`` as with all other displays. In this case however, ``it`` is a ``PVVXDisplay`` instance (see API Reference).
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.. code-block:: yaml
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display:
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- platform: pvvx_mithermometer
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# ...
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lambda: |-
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// Print -2.1 as big number (first row)
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it.print_bignum(-2.1);
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// Print °C next to the big number
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it.print_unit(pvvx_mithermometer::UNIT_DEG_C);
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// Print 88 as small number (second row)
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it.print_smallnum(88);
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// Print % next to the small number
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it.print_percent(true);
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// Print the low battery symbol
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it.print_battery(true);
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// Print a happy smiley. Results in " ^_^ "
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it.print_happy(true);
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// Print a sad smiley. Results in " -∧- "
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it.print_sad(true);
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// The comination of happy and sad simley results in " Δ△Δ "
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// Print round brackets around the simley
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it.print_bracket(true);
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// The final result is "(Δ△Δ)"
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Valid values for the big number (``it.print_bignum()``) are from -99.5 to 1999.5. Smaller values are displayed as ``Lo``, larger ones as ``Hi``. It will be printed to the screen. If not defined, a 0 will be displayed.
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Valid values for the small number (``it.print_smallnum()``) are from -9 to 99. Smaller values are displayed as ``Lo``, larger ones as ``Hi``. If not defined, a 0 will be displayed.
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Possible values for the unit of the big number (``it.print_unit()``) are:
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- ``pvvx_mithermometer::UNIT_NONE``: do not show a unit
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- ``pvvx_mithermometer::UNIT_DEG_GHE``: show ``°Г``
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- ``pvvx_mithermometer::UNIT_MINUS``: show ``-``
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- ``pvvx_mithermometer::UNIT_DEG_F``: show ``°F``
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- ``pvvx_mithermometer::UNIT_LOWDASH``: show ``_``
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- ``pvvx_mithermometer::UNIT_DEG_C``: show ``°C``
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- ``pvvx_mithermometer::UNIT_LINES``: show ``=``
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- ``pvvx_mithermometer::UNIT_DEG_E``: show ``°E``
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The appearance of the smiley can be defined by combining the functions ``it.print_happy()``, ``it.print_sad()`` and ``it.print_bracket(true)``:
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=================== =============== ================= ==========
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``print_bracket()`` ``print_sad()`` ``print_happy()`` result
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=================== =============== ================= ==========
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false false false
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false false true ``^_^``
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false true false ``-∧-``
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false true true ``Δ△Δ``
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true false false ``( )``
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true false true ``(^_^)``
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true true false ``(-∧-)``
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true true true ``(Δ△Δ)``
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=================== =============== ================= ==========
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Display states of other sensors
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*******************************
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The following example display the sensor states of a MiFlora sensor on a pvvx display. The time is also synchronized.
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.. code-block:: yaml
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time:
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- platform: homeassistant
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id: homeassistant_time
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esp32_ble_tracker:
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ble_client:
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- mac_address: "A4:C1:38:B1:CD:7F"
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id: pvvx_ble_display
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sensor:
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- platform: pvvx_mithermometer
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mac_address: "A4:C1:38:B1:CD:7F"
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temperature:
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name: "PVVX Temperature"
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humidity:
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name: "PVVX Humidity"
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battery_level:
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name: "PVVX Battery-Level"
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battery_voltage:
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name: "PVVX Battery-Voltage"
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- platform: xiaomi_hhccjcy01
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mac_address: '94:2B:FF:5C:91:61'
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temperature:
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name: "Xiaomi HHCCJCY01 Temperature"
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id: miflora_temperature
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moisture:
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name: "Xiaomi HHCCJCY01 Moisture"
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id: miflora_moisture
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illuminance:
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name: "Xiaomi HHCCJCY01 Illuminance"
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conductivity:
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name: "Xiaomi HHCCJCY01 Soil Conductivity"
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display:
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- platform: pvvx_mithermometer
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ble_client_id: pvvx_ble_display
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update_interval: 10min
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validity_period: 15min
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time_id: homeassistant_time
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lambda: |-
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double temp = id(miflora_temperature).state;
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double moisture = id(miflora_moisture).state;
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it.print_bignum(temp);
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it.print_unit(pvvx_mithermometer::UNIT_DEG_C);
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it.print_smallnum(moisture);
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it.print_percent();
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if (temp < 5 || temp > 30 || moisture < 10 || moisture > 50) {
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it.print_sad();
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} else {
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it.print_happy();
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}
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Only synchronize the time once a day
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************************************
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The following example will synchronized the time of the pvvx device once a day.
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.. code-block:: yaml
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time:
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- platform: homeassistant
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id: homeassistant_time
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esp32_ble_tracker:
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ble_client:
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- mac_address: "A4:C1:38:B1:CD:7F"
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id: pvvx_ble_display
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sensor:
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- platform: pvvx_mithermometer
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mac_address: "A4:C1:38:B1:CD:7F"
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temperature:
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name: "PVVX Temperature"
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humidity:
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name: "PVVX Humidity"
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battery_level:
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name: "PVVX Battery-Level"
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battery_voltage:
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name: "PVVX Battery-Voltage"
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display:
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- platform: pvvx_mithermometer
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ble_client_id: pvvx_ble_display
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update_interval: 24h
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validity_period: 0s
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time_id: homeassistant_time
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See Also
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--------
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- :doc:`index`
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- :doc:`/components/ble_client`
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- :doc:`/components/sensor/xiaomi_ble`
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- :apiref:`pvvx_mithermometer/display/pvvx_display.h`
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- `ATC_MiThermometer firmware <https://github.com/pvvx/ATC_MiThermometer>`__ by `pvvx <https://github.com/pvvx>`__
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- :ghedit:`Edit`
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