Files
linux-voice-assistant/linux_voice_assistant/led_controller.py
T
imonlinux d90943fe8e Add Microphone Mute Switch Entity
Subscribes to the new mic_muted and mic_unmuted events.

Provides visual feedback by setting the LEDs to a solid dim red when muted and calling the idle state handler (turning the LEDs off) when unmuted.
2025-10-11 17:11:00 -07:00

140 lines
4.5 KiB
Python

import asyncio
import logging
from typing import Any, Tuple
import board
import adafruit_dotstar
from .event_bus import EventHandler, subscribe
_LOGGER = logging.getLogger(__name__)
# Constants for ReSpeaker 2-Mic Hat
NUM_LEDS = 3
_OFF = (0, 0, 0)
_BLUE = (0, 0, 255)
_YELLOW = (255, 255, 0)
_GREEN = (0, 255, 0)
_DIM_RED = (50, 0, 0) # ADDED for Mute
class LedController(EventHandler):
def __init__(
self,
state,
interface: str = "spi",
clock_pin: int = 13,
data_pin: int = 12,
):
super().__init__(state)
self.loop = state.loop
self.current_task = None
self._is_ready = False
try:
if interface == "gpio":
_LOGGER.debug(f"Initializing LEDs on GPIO data={data_pin}, clock={clock_pin}")
data_pin_obj = getattr(board, f"D{data_pin}")
clock_pin_obj = getattr(board, f"D{clock_pin}")
self.leds = adafruit_dotstar.DotStar(
clock_pin_obj, data_pin_obj, NUM_LEDS, brightness=0.5, auto_write=False
)
else: # Default to SPI
_LOGGER.debug("Initializing LEDs on hardware SPI")
self.leds = adafruit_dotstar.DotStar(
board.SCLK, board.MOSI, NUM_LEDS, brightness=0.5, auto_write=False
)
self._is_ready = True
_LOGGER.info(f"LED Controller initialized using {interface} interface.")
self.run_action("blink", _GREEN, 2)
except Exception:
_LOGGER.exception("Failed to initialize LED controller. LEDs will be disabled.")
def run_action(self, action_method_name: str, *args: Any) -> None:
if not self._is_ready:
return
if self.current_task and not self.current_task.done():
self.current_task.cancel()
coro = getattr(self, action_method_name)(*args)
self.current_task = asyncio.run_coroutine_threadsafe(coro, self.loop)
async def color(self, rgb: Tuple[int, int, int]):
if not self._is_ready:
return
self.leds.fill(rgb)
self.leds.show()
async def blink(self, color, count=3):
for _ in range(count):
await self.color(color)
await asyncio.sleep(0.2)
await self.color(_OFF)
await asyncio.sleep(0.2)
async def pulse(self, color: Tuple[int, int, int], speed: float = 0.015):
try:
r, g, b = color
while True:
for i in range(0, 101, 5):
brightness = i / 100.0
await self.color((int(r * brightness), int(g * brightness), int(b * brightness)))
await asyncio.sleep(speed)
for i in range(100, -1, -5):
brightness = i / 100.0
await self.color((int(r * brightness), int(g * brightness), int(b * brightness)))
await asyncio.sleep(speed)
except asyncio.CancelledError:
await self.color(_OFF)
# --- EVENT HANDLERS ---
@subscribe
def ha_connected(self, data: dict):
_LOGGER.debug("HA Connected, setting idle LED state.")
self.voice_run_end(data)
@subscribe
def voice_wakeword(self, data: dict):
_LOGGER.debug("LED Event: voice_wakeword")
self.run_action("pulse", _BLUE)
@subscribe
def voice_stt_start(self, data: dict):
_LOGGER.debug("LED Event: voice_stt_start (listening)")
self.run_action("pulse", _BLUE)
@subscribe
def voice_vad_start(self, data: dict):
_LOGGER.debug("LED Event: voice_vad_start (user speaking)")
pass
@subscribe
def voice_stt_end(self, data: dict):
_LOGGER.debug("LED Event: voice_stt_end (processing)")
self.run_action("pulse", _YELLOW)
@subscribe
def voice_tts_start(self, data: dict):
_LOGGER.debug("LED Event: voice_tts_start (assistant speaking)")
self.run_action("pulse", _GREEN)
@subscribe
def voice_run_end(self, data: dict):
_LOGGER.debug("LED Event: voice_run_end")
self.run_action("color", _OFF)
# --- ADDED: Mute State Handlers ---
@subscribe
def mic_muted(self, data: dict):
_LOGGER.debug("LED Event: Mic muted")
self.run_action("color", _DIM_RED)
@subscribe
def mic_unmuted(self, data: dict):
_LOGGER.debug("LED Event: Mic unmuted")
# Return to the normal idle state (off)
self.voice_run_end(data)