mirror of
https://github.com/esphome/esphome-docs.git
synced 2024-12-25 17:17:54 +01:00
92 lines
2.5 KiB
ReStructuredText
92 lines
2.5 KiB
ReStructuredText
I²S Audio Microphone
|
|
====================
|
|
|
|
.. seo::
|
|
:description: Instructions for setting up I²S based microphones in ESPHome.
|
|
:image: i2s_audio.svg
|
|
|
|
The ``i2s_audio`` microphone platform allows you to receive audio via the the
|
|
:doc:`/components/i2s_audio`. This platform only works on ESP32 based chips.
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example configuration entry
|
|
microphone:
|
|
- platform: i2s_audio
|
|
id: external_mic
|
|
adc_type: external
|
|
i2s_din_pin: GPIO23
|
|
|
|
- platform: i2s_audio
|
|
id: adc_mic
|
|
adc_type: internal
|
|
adc_pin: GPIO35
|
|
|
|
|
|
Configuration variables:
|
|
------------------------
|
|
|
|
- **adc_type** (**Required**, enum):
|
|
|
|
- ``external``: Use an external ADC connected to the I²S bus.
|
|
- ``internal``: Use the internal ADC of the ESP32. Only supported on ESP32, no variant support.
|
|
|
|
- **channel** (*Optional*, enum): The channel of the microphone. One of ``left`` or ``right``. Defaults to ``right``.
|
|
- **bits_per_sample** (*Optional*, enum): The bit depth of the audio samples. Note that while set to ``32bit``, the samples
|
|
will be scaled down to 16bit before being forwarded.
|
|
One of ``16bit`` or ``32bit``. Defaults to ``16bit``.
|
|
- **i2s_audio_id** (*Optional*, :ref:`config-id`): The ID of the :ref:`I²S Audio <i2s_audio>` you wish to use for this microphone.
|
|
- All other options from :ref:`Microphone <config-microphone>`
|
|
|
|
External ADC
|
|
------------
|
|
|
|
- **i2s_din_pin** (**Required**, :ref:`Pin Schema <config-pin_schema>`): The GPIO pin to use for the I²S ``DIN/SDIN`` *(Data In)* signal, also referred to as ``SD/SDATA`` *(Serial Data)* or ``ADCDAT`` *(Analog to Digital Converter Data)*.
|
|
- **pdm** (**Required**, boolean): Set this to ``true`` if your external ADC uses PDM (Pulse Density Modulation) instead of I²S.
|
|
|
|
.. note::
|
|
|
|
PDM microphones are only supported on ESP32 and ESP32-S3.
|
|
|
|
Internal ADC
|
|
------------
|
|
|
|
.. note::
|
|
|
|
Internal ADC microphones are only supported on a regular ESP32, not the variants.
|
|
|
|
- **adc_pin** (**Required**, :ref:`Pin Schema <config-pin_schema>`): The GPIO pin to use for the ADC input.
|
|
|
|
|
|
Known Devices
|
|
-------------
|
|
|
|
M5Stack Atom Echo
|
|
*****************
|
|
|
|
.. code-block:: yaml
|
|
|
|
microphone:
|
|
- platform: i2s_audio
|
|
adc_type: external
|
|
i2s_din_pin: GPIO23
|
|
pdm: true
|
|
|
|
RaspiAudio Muse Luxe
|
|
********************
|
|
|
|
.. code-block:: yaml
|
|
|
|
microphone:
|
|
- platform: i2s_audio
|
|
i2s_din_pin: GPIO35
|
|
adc_type: external
|
|
pdm: false
|
|
|
|
|
|
See also
|
|
--------
|
|
|
|
- :doc:`index`
|
|
- :ghedit:`Edit`
|