HA Voice Preview Edition Toslink digital audio output

johnboiles · January 16, 2025, 11:56pm

Using my SPDIF digital audio PR I non-intrusively added a Toslink digital audio port to my Home Assistant Voice Preview Edition via the Grove port. The wiring was super simple – just a Grove connector wire I cut and soldered to an optical Toslink transmitter.

I’m now streaming perfect 48KHz digital audio from Music Assistant to our office’s high-end MSB Technology DAC.

This is the config I’m using:

packages:
  remote_package_shorthand: github://esphome/home-assistant-voice-pe/home-assistant-voice.yaml@dev

esphome:
  name: home-assistant-voice
  friendly_name: Home Assistant Voice
  name_add_mac_suffix: false

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  fast_connect: true # Required for hidden AP

external_components:
  - source: github://pr#8065
    components: [ i2s_audio, spdif_audio ]
    refresh: 0s

i2s_audio:
  - id: !remove i2s_output
  - id: i2s_output_spdif

speaker:
  - id: !remove i2s_audio_speaker
  - id: spdif_speaker
    platform: spdif_audio
    i2s_audio_id: i2s_output_spdif
    data_pin: GPIO1 # Grove port SDA pin
    sample_rate: 48000
    timeout: never
    buffer_duration: 80ms
    fill_silence: true
    debug: true

switch:
  - platform: gpio
    pin: GPIO46
    id: grove_port_power
    restore_mode: ALWAYS_ON
    setup_priority: 1001

media_player:
  - id: !extend nabu_media_player
    name: Media Player
    audio_dac: !remove
    volume_increment: !remove
    volume_min: !remove
    volume_max: !remove

You’ll see in this config it’s using two of my PRs to support this. Hopefully this can all get merged in before too long!

github.com/esphome/esphome

SPDIF Speaker Support

esphome:dev ← johnboiles:spdif_speaker

opened 11:10AM - 11 Jan 25 UTC

johnboiles

+925 -2

# What does this implement/fix? This implements a SPDIF speaker. This is port…ed from [this PR](https://github.com/gnumpi/esphome_audio/pull/59) and is especially useful with the new `nabu_media_player` which can use any speaker as an output. I'm using this via the Home Assistant Voice Preview Edition Grove port to output digital audio to my [MSB Technology](https://msbtechnology.com/) DAC. All you need to try this is something that can receive optical audio (e.g. soundbar, AV receiver) and an LED (even the debug LED directly on your dev board). Just put your optical cable up to the LED and it plays audio! I've also tried some [real optical transmitter modules](https://www.aliexpress.us/item/2255800972802688.html) (basically just an LED in a connector). <img width="350" alt="using simple LED" src="https://github.com/user-attachments/assets/0e348c4a-703a-4e40-bd01-79cad92ef3ae"> <img width="350" alt="using Toslink connector" src="https://github.com/user-attachments/assets/d92dac03-15e4-4ab9-9c2c-4bfe2b22a29d"> For the Home Assistant Voice Preview Edition you can directly wire in the [optical transmitters](https://www.aliexpress.us/item/2255800972802688.html) to the Grove connector (config for that also included below) <img width="350" alt="HA Voice PE with MSB Technology DAC" src="https://github.com/user-attachments/assets/b746f935-9c82-4e42-831d-fbf56402f7d9"> <img width="350" alt="HA Voice PE top view" src="https://github.com/user-attachments/assets/19f6e8e1-adbe-40ba-8257-e32be289a6c4"> <img width="350" alt="Optical transmitter connected via Grove port" src="https://github.com/user-attachments/assets/3581c395-7a69-444b-babe-73bd979bdadd"> <img width="350" alt="Optical transmitter to Grove wiring" src="https://github.com/user-attachments/assets/c2a9117d-3905-4aab-a438-0a38f9de70f2"> This uses (abuses?) the I2S peripheral to stream out a SPDIF bitstream so this had to inherit from `I2SAudioComponent` to avoid an I2S port collision. But I don't think this can go inside `i2s_audio` since AFAIK there's not a way for `i2s_audio` to have two separate speaker components (though LMK if there's a way to handle that!). ## Types of changes - [ ] Bugfix (non-breaking change which fixes an issue) - [x] New feature (non-breaking change which adds functionality) - [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected) - [ ] Code quality improvements to existing code or addition of tests - [ ] Other **Pull request in [esphome-docs](https://github.com/esphome/esphome-docs) with documentation (if applicable):** I will happily do this once the implementation is stable. ## Test Environment - [ ] ESP32 - [x] ESP32 IDF - [ ] ESP8266 - [ ] RP2040 - [ ] BK72xx - [ ] RTL87xx ## Example entry for `config.yaml`: For Home Assistant Voice Preview Edition (using the Grove port): ```yaml packages: remote_package_shorthand: github://esphome/home-assistant-voice-pe/home-assistant-voice.yaml@dev esphome: name: home-assistant-voice friendly_name: Home Assistant Voice name_add_mac_suffix: false wifi: ssid: !secret wifi_ssid password: !secret wifi_password fast_connect: true # Required for hidden AP external_components: - source: github://pr#8065 components: [ i2s_audio, spdif_audio ] refresh: 0s i2s_audio: - id: !remove i2s_output - id: i2s_output_spdif speaker: - id: !remove i2s_audio_speaker - id: spdif_speaker platform: spdif_audio i2s_audio_id: i2s_output_spdif data_pin: GPIO1 # Grove port SDA pin sample_rate: 48000 timeout: never buffer_duration: 80ms fill_silence: true debug: true switch: - platform: gpio pin: GPIO46 id: grove_port_power restore_mode: ALWAYS_ON setup_priority: 1001 media_player: - id: !extend nabu_media_player name: Media Player audio_dac: !remove volume_increment: !remove volume_min: !remove volume_max: !remove ``` <details><summary>Example config for a generic ESP32-S3 dev board</summary> <p> ```yaml esphome: name: spdif esp32: board: esp32-s3-devkitc-1 variant: esp32s3 flash_size: 16MB framework: type: esp-idf version: recommended sdkconfig_options: CONFIG_ESP32S3_DEFAULT_CPU_FREQ_240: "y" CONFIG_ESP32S3_DATA_CACHE_64KB: "y" CONFIG_ESP32S3_DATA_CACHE_LINE_64B: "y" CONFIG_ESP32S3_INSTRUCTION_CACHE_32KB: "y" CONFIG_ESP32_S3_BOX_BOARD: "y" CONFIG_SPIRAM_ALLOW_STACK_EXTERNAL_MEMORY: "y" CONFIG_SPIRAM_TRY_ALLOCATE_WIFI_LWIP: "y" # Settings based on https://github.com/espressif/esp-adf/issues/297#issuecomment-783811702 CONFIG_ESP32_WIFI_STATIC_RX_BUFFER_NUM: "16" CONFIG_ESP32_WIFI_DYNAMIC_RX_BUFFER_NUM: "512" CONFIG_ESP32_WIFI_STATIC_TX_BUFFER: "y" CONFIG_ESP32_WIFI_TX_BUFFER_TYPE: "0" CONFIG_ESP32_WIFI_STATIC_TX_BUFFER_NUM: "8" CONFIG_ESP32_WIFI_CACHE_TX_BUFFER_NUM: "32" CONFIG_ESP32_WIFI_AMPDU_TX_ENABLED: "y" CONFIG_ESP32_WIFI_TX_BA_WIN: "16" CONFIG_ESP32_WIFI_AMPDU_RX_ENABLED: "y" CONFIG_ESP32_WIFI_RX_BA_WIN: "32" CONFIG_LWIP_MAX_ACTIVE_TCP: "16" CONFIG_LWIP_MAX_LISTENING_TCP: "16" CONFIG_TCP_MAXRTX: "12" CONFIG_TCP_SYNMAXRTX: "6" CONFIG_TCP_MSS: "1436" CONFIG_TCP_MSL: "60000" CONFIG_TCP_SND_BUF_DEFAULT: "65535" CONFIG_TCP_WND_DEFAULT: "65535" # Adjusted from linked settings to avoid compilation error CONFIG_TCP_RECVMBOX_SIZE: "512" CONFIG_TCP_QUEUE_OOSEQ: "y" CONFIG_TCP_OVERSIZE_MSS: "y" CONFIG_LWIP_WND_SCALE: "y" CONFIG_TCP_RCV_SCALE: "3" CONFIG_LWIP_TCPIP_RECVMBOX_SIZE: "512" CONFIG_BT_ALLOCATION_FROM_SPIRAM_FIRST: "y" CONFIG_BT_BLE_DYNAMIC_ENV_MEMORY: "y" CONFIG_MBEDTLS_EXTERNAL_MEM_ALLOC: "y" CONFIG_MBEDTLS_SSL_PROTO_TLS1_3: "y" # TLS1.3 support isn't enabled by default in IDF 5.1.5 psram: mode: quad speed: 80MHz wifi: ssid: [YOURSSID] password: [YOURPASSWORD] power_save_mode: none logger: external_components: - source: type: git url: https://github.com/esphome/home-assistant-voice-pe ref: dev components: - media_player - nabu refresh: 0s - source: github://pr#8065 components: [ i2s_audio, spdif_audio ] refresh: 0s i2s_audio: id: i2s_shared speaker: - platform: spdif_audio id: my_speaker i2s_audio_id: i2s_shared data_pin: GPIO13 sample_rate: 48000 buffer_duration: 80ms fill_silence: true debug: true media_player: - platform: nabu id: nabu_media_player name: Media Player internal: false speaker: my_speaker sample_rate: 48000 ``` </p> </details> ## Checklist: - [x] The code change is tested and works locally. - [ ] Tests have been added to verify that the new code works (under `tests/` folder). If user exposed functionality or configuration variables are added/changed: - [ ] Documentation added/updated in [esphome-docs](https://github.com/esphome/esphome-docs).

~~Add `id` to the `speaker` component by johnboiles · Pull Request #294 · esphome/home-assistant-voice-pe · GitHub~~ (this one is merged now!)