Files
linux-voice-assistant/linux_voice_assistant/led_controller.py
T

195 lines
8.5 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__)
# Default Colors
_OFF = (0, 0, 0)
_BLUE = (0, 0, 255)
_YELLOW = (255, 255, 0)
_GREEN = (0, 255, 0)
_DIM_RED = (50, 0, 0)
_ORANGE = (255, 165, 0)
_PURPLE = (128, 0, 255)
class LedController(EventHandler):
def __init__(self, state, interface: str = "spi", clock_pin: int = 13, data_pin: int = 12, num_leds: int = 3):
super().__init__(state)
self.loop = state.loop
self.num_leds = num_leds
self.current_task = None
self._is_ready = False
# --- Central Configuration Dictionary ---
self.configs = {
"idle": {"effect": "off", "color": _PURPLE, "brightness": 0.5},
"listening": {"effect": "medium_pulse", "color": _BLUE, "brightness": 0.5},
"thinking": {"effect": "spin", "color": _YELLOW, "brightness": 0.8},
"responding": {"effect": "medium_pulse", "color": _GREEN, "brightness": 0.5},
"error": {"effect": "fast_blink", "color": _ORANGE, "brightness": 1.0},
}
try:
# Initialize hardware
if interface == "gpio":
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, self.num_leds, auto_write=False)
else:
self.leds = adafruit_dotstar.DotStar(board.SCLK, board.MOSI, self.num_leds, auto_write=False)
self._is_ready = True
self.leds.brightness = self.configs["idle"]["brightness"]
_LOGGER.info(f"LED Controller initialized for {self.num_leds} LEDs using {interface} interface.")
self.run_action("startup_sequence")
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)
def _apply_state_effect(self, state_name: str):
config = self.configs.get(state_name, self.configs["idle"])
_LOGGER.debug(f"Applying effect for state '{state_name}': {config['effect']}")
self.leds.brightness = config["brightness"]
self.run_action(config["effect"], config["color"])
config["state_name"] = state_name
self.state.event_bus.publish("publish_state_to_mqtt", config)
# --- Animations ---
async def startup_sequence(self): await self.blink(_GREEN, 1)
async def off(self, color): self.leds.fill(_OFF); self.leds.show()
async def solid(self, color: Tuple[int, int, int]): self.leds.fill(color); self.leds.show()
async def blink(self, color, count=3): await self.medium_blink(color)
async def _base_pulse(self, color: Tuple[int, int, int], speed: float):
try:
r, g, b = color
while True:
for i in range(0, 101, 10):
mod = i / 100.0; self.leds.fill((int(r*mod), int(g*mod), int(b*mod))); self.leds.show(); await asyncio.sleep(speed)
for i in range(100, -1, -10):
mod = i / 100.0; self.leds.fill((int(r*mod), int(g*mod), int(b*mod))); self.leds.show(); await asyncio.sleep(speed)
except asyncio.CancelledError: self.leds.fill(_OFF); self.leds.show()
async def slow_pulse(self, color): await self._base_pulse(color, 0.05)
async def medium_pulse(self, color): await self._base_pulse(color, 0.02)
async def fast_pulse(self, color): await self._base_pulse(color, 0.008)
async def _base_blink(self, color: Tuple[int, int, int], speed: float):
try:
while True:
self.leds.fill(color); self.leds.show(); await asyncio.sleep(speed)
self.leds.fill(_OFF); self.leds.show(); await asyncio.sleep(speed)
except asyncio.CancelledError: self.leds.fill(_OFF); self.leds.show()
async def slow_blink(self, color): await self._base_blink(color, 1.0)
async def medium_blink(self, color): await self._base_blink(color, 0.5)
async def fast_blink(self, color): await self._base_blink(color, 0.1)
async def spin(self, color: Tuple[int, int, int], speed: float = 0.1):
try:
i = 0
while True:
self.leds.fill(_OFF); self.leds[i % self.num_leds] = color; self.leds.show(); i += 1; await asyncio.sleep(speed)
except asyncio.CancelledError: self.leds.fill(_OFF); self.leds.show()
# --- Voice Event Subscribers ---
@subscribe
def ha_connected(self, data: dict): self._apply_state_effect("idle")
@subscribe
def voice_wakeword(self, data: dict): self._apply_state_effect("listening")
@subscribe
def voice_stt_start(self, data: dict): self._apply_state_effect("listening")
@subscribe
def voice_vad_start(self, data: dict): pass
@subscribe
def voice_stt_end(self, data: dict): self._apply_state_effect("thinking")
@subscribe
def voice_tts_start(self, data: dict): self._apply_state_effect("responding")
@subscribe
def voice_error(self, data: dict): self._apply_state_effect("error")
@subscribe
def voice_run_end(self, data: dict): self._apply_state_effect("idle")
@subscribe
def mic_muted(self, data: dict): self.run_action("solid", _DIM_RED)
@subscribe
def mic_unmuted(self, data: dict): self._apply_state_effect("idle")
# --- MQTT Config Subscribers ---
def _update_config(self, state_name: str, data: dict, apply: bool):
config = self.configs[state_name]
changed = False
new_effect = data.get("effect")
if new_effect is not None and config["effect"] != new_effect:
config["effect"] = new_effect
changed = True
new_color_data = data.get("color")
if new_color_data is not None:
new_color_tuple = (new_color_data.get("r"), new_color_data.get("g"), new_color_data.get("b"))
if config["color"] != new_color_tuple:
config["color"] = new_color_tuple
changed = True
new_brightness = data.get("brightness")
if new_brightness is not None:
new_brightness_float = new_brightness / 255.0
# --- THIS IS THE FIX ---
# Compare floats with a tolerance, not for exact equality
if abs(config["brightness"] - new_brightness_float) > 0.001:
config["brightness"] = new_brightness_float
changed = True
if not changed:
return
is_retained = data.get("retained", False)
if is_retained:
if state_name == "idle":
self._apply_state_effect("idle")
return
if apply:
self._apply_state_effect(state_name)
else:
config["state_name"] = state_name
self.state.event_bus.publish("publish_state_to_mqtt", config)
@subscribe
def set_idle_effect(self, data: dict): self._update_config("idle", data, True)
@subscribe
def set_idle_color(self, data: dict): self._update_config("idle", data, self.configs["idle"]["effect"] != "off")
@subscribe
def set_listening_effect(self, data: dict): self._update_config("listening", data, False)
@subscribe
def set_listening_color(self, data: dict): self._update_config("listening", data, False)
@subscribe
def set_thinking_effect(self, data: dict): self._update_config("thinking", data, False)
@subscribe
def set_thinking_color(self, data: dict): self._update_config("thinking", data, False)
@subscribe
def set_responding_effect(self, data: dict): self._update_config("responding", data, False)
@subscribe
def set_responding_color(self, data: dict): self._update_config("responding", data, False)
@subscribe
def set_error_effect(self, data: dict): self._update_config("error", data, False)
@subscribe
def set_error_color(self, data: dict): self._update_config("error", data, False)
@subscribe
def set_num_leds(self, data: dict):
num_leds = data.get("num_leds")
if (num_leds is not None) and (self.num_leds != num_leds):
_LOGGER.info("Number of LEDs changed to %d. Please restart for change to take effect.", num_leds)