Merge pull request 'Move from polling to worker thread' (#3) from worker-test into main

Reviewed-on: #3

README.md

@@ -13,27 +13,19 @@ A Bun-based deployment script that automates copying files to a Raspberry Pi and
 
 ### What It Does
 
-1. **Creates directory** on the Pi at the configured path
-2. **Copies files** from local `pi/` directory to the Pi
-3. **Sets permissions** to make all TypeScript files executable
-4. **Bootstrap (optional)**: If `--bootstrap` flag is passed, runs `bootstrap.ts` on the Pi with sudo
-5. **Service management**:
+1. **Copies files** from here to the pi (in ~/phone by default)
+2. **Bootstrap (optional)**: If `--bootstrap` flag is passed it will bootstrap the pi with everything it needs
+3. **Service management**:
    - Checks if `phone-ap.service` and `phone-web.service` exist
    - If they exist, restarts both services
    - If they don't exist and bootstrap wasn't run, warns the user
 
 ### Usage
 
-**Standard deployment** (just copy files and restart services):
-
 ```bash
-bun deploy.ts
-```
-
-**First-time deployment** (copy files + run bootstrap):
-
-```bash
-bun deploy.ts --bootstrap
+bun scripts/deploy.ts
+# or bun deploy.ts --bootstrap
+>>>>>>> Stashed changes
 ```
 
 ### Services
@@ -50,8 +42,14 @@ After deployment, the Pi is accessible at:
 - **Web URL**: http://phone.local
 - **WiFi Network**: phone-setup
 
-### Requirements
+### Local Requirements
 
 - Bun runtime
+  <<<<<<< HEAD
+  <<<<<<< Updated upstream
+- # SSH access to `yellow-phone.local`
 - SSH access to `phone.local`
-- Local `pi/` directory with files to deploy
+  > > > > > > > 1c717a5b4772147c3b7ce20f512452f13c8cc510
+- # Local `pi/` directory with files to deploy
+- SSH access to `phone.local`
+  > > > > > > > Stashed changes

baresip/accounts

@@ -0,0 +1 @@
+<sip:yellow@probablycorey.sip.twilio.com;transport=tls>;auth_pass=zgm-kwx2bug5hwf3YGF;unregister_on_exit=yes;regint=300

baresip/config

@@ -0,0 +1,71 @@
+#
+# baresip configuration
+#
+
+#------------------------------------------------------------------------------
+
+# Core
+poll_method		epoll		# poll, select, epoll ..
+ring_aufile		none
+
+# Call
+call_local_timeout	120
+call_max_calls		4
+
+# Audio
+audio_player		alsa,default
+audio_source		alsa,default
+audio_alert		none
+audio_alert_enable	no
+audio_level		no
+ausrc_format		s16		# s16, float, ..
+auplay_format		s16		# s16, float, ..
+auenc_format		s16		# s16, float, ..
+audec_format		s16		# s16, float, ..
+audio_buffer		20-160		# ms
+
+# AVT - Audio/Video Transport
+rtp_tos			184
+rtcp_mux		no
+jitter_buffer_delay	5-10		# frames
+rtp_stats		no
+
+
+#------------------------------------------------------------------------------
+# Modules
+
+module_path		/usr/lib/baresip/modules
+
+# UI Modules
+#module			stdio.so
+
+# Audio codec Modules (in order)
+module			g711.so
+
+
+# Audio driver Modules
+module			alsa.so
+
+# Media NAT modules
+module			stun.so
+module			turn.so
+module			ice.so
+
+module			httpd.so
+
+#------------------------------------------------------------------------------
+# Temporary Modules (loaded then unloaded)
+
+module_tmp		uuid.so
+module_tmp		account.so
+
+
+#------------------------------------------------------------------------------
+# Application Modules
+
+module_app		contact.so
+module_app		debug_cmd.so
+module_app		menu.so
+
+
+http_listen		0.0.0.0:8000 # httpd - HTTP Serve

bun.lock

@@ -6,6 +6,7 @@
       "dependencies": {
         "hono": "^4.10.4",
         "openai": "^6.9.0",
+        "robot3": "^1.2.0",
       },
       "devDependencies": {
         "@types/bun": "latest",
@@ -30,6 +31,8 @@
 
     "openai": ["openai@6.9.0", "", { "peerDependencies": { "ws": "^8.18.0", "zod": "^3.25 || ^4.0" }, "optionalPeers": ["ws", "zod"], "bin": { "openai": "bin/cli" } }, "sha512-n2sJRYmM+xfJ0l3OfH8eNnIyv3nQY7L08gZQu3dw6wSdfPtKAk92L83M2NIP5SS8Cl/bsBBG3yKzEOjkx0O+7A=="],
 
+    "robot3": ["robot3@1.2.0", "", {}, "sha512-Xin8KHqCKrD9Rqk1ZzZQYjsb6S9DRggcfwBqnVPeM3DLtNCJLxWWTrPJDYm3E+ZiTO7H3VMdgyPSkIbuYnYP2Q=="],
+
     "typescript": ["typescript@5.9.3", "", { "bin": { "tsc": "bin/tsc", "tsserver": "bin/tsserver" } }, "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw=="],
 
     "undici-types": ["undici-types@7.16.0", "", {}, "sha512-Zz+aZWSj8LE6zoxD+xrjh4VfkIG8Ya6LvYkZqtUQGJPZjYl53ypCaUwWqo7eI0x66KBGeRo+mlBEkMSeSZ38Nw=="],

package.json

@@ -14,7 +14,8 @@
   },
   "dependencies": {
     "hono": "^4.10.4",
-    "openai": "^6.9.0"
+    "openai": "^6.9.0",
+    "robot3": "^1.2.0"
   },
   "prettier": {
     "semi": false,

scripts/deploy.ts

@@ -2,8 +2,8 @@
 
 import { $ } from "bun"
 
-const PI_HOST = process.env.PI_HOST || "phone.local"
-const PI_DIR = "/home/corey/phone"
+const PI_HOST = process.env.PI_HOST ?? "phone.local"
+const PI_DIR = process.env.PI_DIR ?? "/home/corey/phone"
 
 // Parse command line arguments
 const shouldBootstrap = process.argv.includes("--bootstrap")
@@ -37,6 +37,9 @@ if (shouldBootstrap) {
   await $`ssh ${PI_HOST} "cd ${PI_DIR} && sudo bun ${PI_DIR}/scripts/bootstrap.ts ${PI_DIR}"`
 }
 
+// make console beep
+await $`afplay /System/Library/Sounds/Blow.aiff`
+
 // Always check if services exist and restart them (whether we bootstrapped or not)
 console.log("Checking for existing services...")
 const apServiceExists = await $`ssh ${PI_HOST} "systemctl is-enabled phone-ap.service"`

src/buzz/player.ts

@@ -145,11 +145,7 @@ export class Player {
       "-",
     ]
 
-    const proc = Bun.spawn(["aplay", ...args], {
-      stdin: "pipe",
-      stdout: "pipe",
-      stderr: "pipe",
-    })
+    const proc = Bun.spawn(["aplay", ...args], { stdin: "pipe", stdout: "pipe", stderr: "pipe" })
 
     let bufferFinishTime = performance.now()
     const format = this.#format

src/buzz/utils.ts

@@ -1,66 +1,66 @@
 // Audio format configuration
 export type AudioFormat = {
-  format?: string;
-  sampleRate?: number;
-  channels?: number;
-};
+  format?: string
+  sampleRate?: number
+  channels?: number
+}
 
 // Default audio format for recordings and tone generation
 export const DEFAULT_AUDIO_FORMAT = {
-  format: 'S16_LE',
+  format: "S16_LE",
   sampleRate: 16000,
   channels: 1,
-} as const;
+} as const
 
 // Device from ALSA listing
 export type Device = {
-  id: string;        // "default" or "plughw:1,0"
-  card: number;      // ALSA card number
-  device: number;    // ALSA device number
-  label: string;     // Human-readable name
-  type: 'playback' | 'capture';
-};
+  id: string // "default" or "plughw:1,0"
+  card: number // ALSA card number
+  device: number // ALSA device number
+  label: string // Human-readable name
+  type: "playback" | "capture"
+}
 
 // Playback control handle
 export type Playback = {
-  isPlaying: boolean;
-  stop: () => Promise<void>;
-  finished: () => Promise<void>;
-};
+  isPlaying: boolean
+  stop: () => Promise<void>
+  finished: () => Promise<void>
+}
 
 // Streaming playback handle
 export type StreamingPlayback = {
-  isPlaying: boolean;
-  write: (chunk: Uint8Array) => void;
-  stop: () => Promise<void>;
-  bufferEmptyFor: number; // milliseconds since buffer became empty, 0 if not empty
-};
+  isPlaying: boolean
+  write: (chunk: Uint8Array) => void
+  stop: () => Promise<void>
+  bufferEmptyFor: number // milliseconds since buffer became empty, 0 if not empty
+}
 
 // Streaming recording control handle
 export type StreamingRecording = {
-  isRecording: boolean;
-  stream: () => ReadableStream<Uint8Array>;
-  stop: () => Promise<void>;
-};
+  isRecording: boolean
+  stream: () => ReadableStream<Uint8Array>
+  stop: () => Promise<void>
+}
 
 // File recording control handle
 export type FileRecording = {
-  isRecording: boolean;
-  stop: () => Promise<void>;
-};
+  isRecording: boolean
+  stop: () => Promise<void>
+}
 
-const parseDeviceLine = (line: string, type: 'playback' | 'capture'): Device | undefined => {
-  if (!line.startsWith('card ')) return undefined;
+const parseDeviceLine = (line: string, type: "playback" | "capture"): Device | undefined => {
+  if (!line.startsWith("card ")) return undefined
 
-  const match = line.match(/^card (\d+):\s+\w+\s+\[(.+?)\],\s+device (\d+):/);
-  if (!match) return undefined;
+  const match = line.match(/^card (\d+):\s+\w+\s+\[(.+?)\],\s+device (\d+):/)
+  if (!match) return undefined
 
-  const [, cardStr, label, deviceStr] = match;
+  const [, cardStr, label, deviceStr] = match
 
-  if (!cardStr || !label || !deviceStr) return undefined;
+  if (!cardStr || !label || !deviceStr) return undefined
 
-  const card = parseInt(cardStr);
-  const device = parseInt(deviceStr);
+  const card = parseInt(cardStr)
+  const device = parseInt(deviceStr)
 
   return {
     id: `plughw:${card},${device}`,
@@ -68,79 +68,77 @@ const parseDeviceLine = (line: string, type: 'playback' | 'capture'): Device | u
     device,
     label,
     type,
-  };
-};
+  }
+}
 
-const parseAlsaDevices = (output: string, type: 'playback' | 'capture'): Device[] => {
+const parseAlsaDevices = (output: string, type: "playback" | "capture"): Device[] => {
   return output
-    .split('\n')
-    .map(line => parseDeviceLine(line, type))
-    .filter(device => device !== undefined);
-};
+    .split("\n")
+    .map((line) => parseDeviceLine(line, type))
+    .filter((device) => device !== undefined)
+}
 
 export const listDevices = async (): Promise<Device[]> => {
-  const playbackOutput = await Bun.$`aplay -l`.text();
-  const captureOutput = await Bun.$`arecord -l`.text();
+  const playbackOutput = await Bun.$`aplay -l`.text()
+  const captureOutput = await Bun.$`arecord -l`.text()
 
-  const playback = parseAlsaDevices(playbackOutput, 'playback');
-  const capture = parseAlsaDevices(captureOutput, 'capture');
+  const playback = parseAlsaDevices(playbackOutput, "playback")
+  const capture = parseAlsaDevices(captureOutput, "capture")
 
-  return [...playback, ...capture];
-};
+  return [...playback, ...capture]
+}
 
 export const findDeviceByLabel = async (
   label: string,
-  type?: 'playback' | 'capture'
+  type?: "playback" | "capture"
 ): Promise<Device> => {
-  const devices = await listDevices();
-  const device = devices.find(d =>
-    d.label === label && (!type || d.type === type)
-  );
+  const devices = await listDevices()
+  const device = devices.find((d) => d.label === label && (!type || d.type === type))
 
   if (!device) {
-    const typeStr = type ? ` (type: ${type})` : '';
-    throw new Error(`Device not found: ${label}${typeStr}`);
+    const typeStr = type ? ` (type: ${type})` : ""
+    throw new Error(`Device not found: ${label}${typeStr}`)
   }
 
-  return device;
-};
+  return device
+}
 
 export const calculateRMS = (chunk: Uint8Array): number => {
-  const samples = new Int16Array(chunk.buffer, chunk.byteOffset, chunk.byteLength / 2);
-  let sum = 0;
+  const samples = new Int16Array(chunk.buffer, chunk.byteOffset, chunk.byteLength / 2)
+  let sum = 0
 
   for (const sample of samples) {
-    sum += sample * sample;
+    sum += sample * sample
   }
 
-  return Math.sqrt(sum / samples.length);
-};
+  return Math.sqrt(sum / samples.length)
+}
 
 export const generateToneSamples = (
   frequencies: number[],
   sampleRate: number,
   durationSeconds: number
 ): Uint8Array => {
-  const numSamples = Math.floor(sampleRate * durationSeconds);
-  const buffer = new ArrayBuffer(numSamples * 2); // 2 bytes per S16_LE sample
-  const samples = new Int16Array(buffer);
+  const numSamples = Math.floor(sampleRate * durationSeconds)
+  const buffer = new ArrayBuffer(numSamples * 2) // 2 bytes per S16_LE sample
+  const samples = new Int16Array(buffer)
 
   for (let i = 0; i < numSamples; i++) {
-    const t = i / sampleRate;
-    let value = 0;
+    const t = i / sampleRate
+    let value = 0
 
     // Mix all frequencies together
     for (const freq of frequencies) {
-      value += Math.sin(2 * Math.PI * freq * t);
+      value += Math.sin(2 * Math.PI * freq * t)
     }
 
     // Average and scale to Int16 range
-    value = (value / frequencies.length) * 32767;
-    samples[i] = Math.round(value);
+    value = (value / frequencies.length) * 32767
+    samples[i] = Math.round(value)
   }
 
-  return new Uint8Array(buffer);
-};
+  return new Uint8Array(buffer)
+}
 
 export const streamTone = async (
   stream: { write: (chunk: Uint8Array) => void; end: () => void },
@@ -148,20 +146,24 @@ export const streamTone = async (
   durationMs: number,
   format: Required<AudioFormat>
 ): Promise<void> => {
-  const infinite = durationMs === Infinity;
-  const durationSeconds = durationMs / 1000;
+  const infinite = durationMs === Infinity
+  const durationSeconds = durationMs / 1000
 
   // Continuous tone
-  const samples = generateToneSamples(frequencies, format.sampleRate, infinite ? 1 : durationSeconds);
+  const samples = generateToneSamples(
+    frequencies,
+    format.sampleRate,
+    infinite ? 1 : durationSeconds
+  )
 
   if (infinite) {
     // Loop 1-second chunks forever
     while (true) {
-      stream.write(samples);
-      await Bun.sleep(1000);
+      stream.write(samples)
+      await Bun.sleep(1000)
     }
   } else {
-    stream.write(samples);
-    stream.end();
+    stream.write(samples)
+    stream.end()
+  }
 }
-};

src/hq.ts

@@ -1,47 +0,0 @@
-import { GPIO } from "./pins"
-
-console.log(`kill -9 ${process.pid}`)
-
-const gpio = new GPIO({ resetOnClose: true })
-
-// // Blink an LED
-using led = gpio.output(21)
-
-// Read a button
-using inputs = gpio.inputGroup({
-  button: { pin: 20, pull: "up", debounce: 10 },
-  switch: { pin: 16, pull: "up", debounce: 10 }
-})
-
-led.value = inputs.pins.button.value
-
-const iteratorEvents = new Promise(async (resolve) => {
-  for await (const event of inputs.events()) {
-    if (event.pin === "button") {
-      console.log(`🌭`, event.value)
-      led.value = event.value
-    }
-  }
-})
-
-const switchEvent = new Promise<void>(async (resolve) => {
-  await inputs.pins.switch.waitForValue(0)
-  console.log("Switch pressed!")
-  resolve()
-})
-
-process.on("SIGINT", () => {
-  inputs.close()
-  led.close()
-  process.exit(0)
-})
-
-process.on("SIGTERM", () => {
-  inputs.close()
-  
-  process.exit(0)
-})
-
-await Promise.race([iteratorEvents, switchEvent])
-
-console.log(`👋 Goodbye!`)

src/phone.ts

@@ -0,0 +1,438 @@
+import { d, reduce, createMachine, state, transition, interpret, guard } from "robot3"
+import { Baresip } from "./sip"
+import { log } from "./utils/log"
+import { sleep } from "bun"
+import { processStderr, processStdout } from "./utils/stdio"
+import Buzz from "./buzz"
+import { join } from "path"
+import GPIO from "./pins"
+import { Agent } from "./agent"
+import { searchWeb } from "./agent/tools"
+
+// TODO: Kill baresip process on exit
+
+type CancelableTask = () => void
+
+type PhoneContext = {
+  lastError?: string
+  peer?: string
+  numberDialed: number
+  cancelDialTone?: CancelableTask
+  cancelRinger?: CancelableTask
+  baresip: Baresip
+  startAgent: () => CancelableTask
+  cancelAgent?: CancelableTask
+}
+
+const gpio = new GPIO()
+using ringer = gpio.output(17, { resetOnClose: true })
+using hook = gpio.input(27, { pull: "up", debounce: 3 })
+using rotaryInUse = gpio.input(22, { pull: "up", debounce: 3 })
+using rotaryNumber = gpio.input(23, { pull: "up", debounce: 3 })
+
+export const startPhone = async (agentId: string, apiKey: string) => {
+  await Buzz.setVolume(0.4)
+  log.info(`📞 Hook ${hook.value}`)
+
+  let digit = 0
+
+  hook.onChange((event) => {
+    const type = event.value == 0 ? "hang_up" : "pick_up"
+    log.info(`📞 Hook ${event.value} sending ${type}`)
+    if (type === "hang_up") {
+      ringer.value = 1
+    } else {
+      ringer.value = 0
+    }
+  })
+
+  rotaryInUse.onChange((event) => {
+    if (event.value === 0) {
+      digit = 0
+    } else {
+      log.info(`📞 Dialed digit: ${digit}`)
+    }
+  })
+
+  rotaryNumber.onChange((event) => {
+    if (event.value === 1) {
+      digit += 1
+    }
+  })
+
+  // Keep process running
+  await new Promise(() => {})
+}
+
+const apiKey = process.env.ELEVEN_API_KEY
+const agentId = process.env.ELEVEN_AGENT_ID
+
+if (!apiKey) {
+  console.error("❌ Error: ELEVEN_API_KEY environment variable is required")
+  process.exit(1)
+}
+
+if (!agentId) {
+  console.error(
+    "❌ Error: ELEVEN_AGENT_ID environELEVEN_AGENT_ID=agent_5601k4taw2cvfjzrz6snxpgeh7x8 ELEVEN_API_KEY=sk_0313740f112c5992cb62ed96c974ab19b5916f1ea172471fment variable is required"
+  )
+  console.error("   Create an agent at https://elevenlabs.io/app/conversational-ai")
+  process.exit(1)
+}
+
+await startPhone(agentId, apiKey)
+
+const startBaresip = async (hook: GPIO.InputPin) => {
+  // const baresipConfig = join(import.meta.dir, "..", "baresip")
+  // const baresip = new Baresip(["/usr/bin/baresip", "-v", "-f", baresipConfig])
+
+  // baresip.registrationSuccess.connect(async () => {
+  //   log.info("🐻 server connected")
+  //   const result = await gpio.get(pins.hook)
+  //   if (result.state === "low") {
+  //     phoneService.send({ type: "initialized" })
+  //   } else {
+  //     phoneService.send({ type: "pick_up" })
+  //   }
+  // })
+
+  // baresip.callReceived.connect(({ contact }) => {
+  //   log.info(`🐻 incoming call from ${contact}`)
+  //   phoneService.send({ type: "incoming_call", from: contact })
+  // })
+
+  // baresip.callEstablished.connect(({ contact }) => {
+  //   log.info(`🐻 call established with ${contact}`)
+  //   phoneService.send({ type: "answered" })
+  // })
+
+  // baresip.hungUp.connect(() => {
+  //   log.info("🐻 call hung up")
+  //   phoneService.send({ type: "remote_hang_up" })
+  // })
+
+  // baresip.connect().catch((error) => {
+  //   log.error("🐻 connection error:", error)
+  //   phoneService.send({ type: "error", message: error.message })
+  // })
+
+  // baresip.error.connect(async ({ message }) => {
+  //   log.error("🐻 error:", message)
+  //   phoneService.send({ type: "error", message })
+  //   for (let i = 0; i < 4; i++) {
+  //     await ring(500)
+  //     await sleep(250)
+  //   }
+  //   process.exit(1)
+  // })
+
+  // const agent = new Agent({
+  //   agentId,
+  //   apiKey,
+  //   tools: {
+  //     search_web: (args: { query: string }) => searchWeb(args.query),
+  //   },
+  // })
+}
+
+//   handleAgentEvents(agent)
+
+//   const startAgent = () => {
+//     log.info("☎️ Starting agent conversation")
+
+//     if (agentProcess?.stdin) {
+//       agentProcess.stdin.write("start\n")
+//     } else {
+//       log.error("☎️ No agent process stdin available")
+//       phoneService.send({ type: "remote_hang_up" })
+//     }
+
+//     return () => {
+//       log.info("☎️ Stopping agent conversation")
+//       if (agentProcess?.stdin) {
+//         agentProcess.stdin.write("stop\n")
+//       }
+//     }
+//   }
+
+//   const context = (initial?: Partial<PhoneContext>): PhoneContext => ({
+//     numberDialed: 0,
+//     baresip,
+//     startAgent,
+//     ...initial,
+//   })
+
+//   const phoneMachine = createMachine(
+//     "initializing",
+//     // prettier-ignore
+//     {
+//       initializing: state(
+//         transition("initialized", "idle"),
+//         transition("pick_up", "ready", reduce(playDialTone)),
+//         transition("error", "fault", reduce(handleError))),
+//       idle: state(
+//         transition("incoming_call", "incoming", reduce(incomingCall)),
+//         transition("pick_up", "ready", reduce(playDialTone))),
+//       incoming: state(
+//         transition("remote_hang_up", "idle", reduce(stopRinger)),
+//         transition("pick_up", "connected", reduce(callAnswered))),
+//       connected: state(
+//         transition("remote_hang_up", "ready", reduce(playDialTone)),
+//         transition("hang_up", "idle", reduce(stopCall))),
+//       ready: state(
+//         transition("dial_start", "dialing", reduce(dialStart)),
+//         transition("dial_timeout", "aborted", reduce(stopDialTone)),
+//         transition("hang_up", "idle", reduce(stopDialTone))),
+//       dialing: state(
+//         transition("dial_stop", "outgoing", reduce(makeCall), guard((ctx) => !callAgentGuard(ctx))),
+//         transition("dial_stop", "connectedToAgent", reduce(makeAgentCall), guard((ctx) => callAgentGuard(ctx))),
+//         transition("digit_increment", "dialing", reduce(digitIncrement)),
+//         transition("hang_up", "idle", reduce(stopDialTone))),
+//       outgoing: state(
+//         transition("start_agent", "connectedToAgent"),
+//         transition("answered", "connected"),
+//         transition("hang_up", "idle", reduce(stopCall))),
+//       connectedToAgent: state(
+//         transition("remote_hang_up", "ready", reduce(stopAgent)),
+//         transition("hang_up", "idle", reduce(stopAgent))),
+//       aborted: state(
+//         transition("hang_up", "idle")),
+//       fault: state(),
+//     },
+//     context
+//   )
+
+//   const phoneService = interpret(phoneMachine, () => {})
+
+//   d._onEnter = function (machine, to, state, prevState, event) {
+//     log.info(`📱 ${machine.current} -> ${to} (${JSON.stringify(event)})`)
+//   }
+
+//   gpio.monitor(pins.hook, { bias: "pull-up" }, (event) => {
+//     const type = event.edge === "falling" ? "hang_up" : "pick_up"
+//     log.info(`📞 Hook ${event.edge} sending ${type}`)
+//     phoneService.send({ type })
+//   })
+
+//   gpio.monitor(pins.rotaryInUse, { bias: "pull-up", throttleMs: 90 }, (event) => {
+//     const type = event.edge === "falling" ? "dial_start" : "dial_stop"
+//     log.debug(`📞 Rotary in-use ${event.edge} sending ${type}`)
+//     phoneService.send({ type })
+//   })
+
+//   gpio.monitor(pins.rotaryNumber, { bias: "pull-up", throttleMs: 90 }, (event) => {
+//     if (event.edge !== "rising") return
+//     phoneService.send({ type: "digit_increment" })
+//   })
+
+//   // Graceful shutdown handling
+//   const cleanup = () => {
+//     log.info("🛑 Shutting down, stopping agent process")
+//     if (agentProcess?.stdin) {
+//       agentProcess.stdin.write("quit\n")
+//     }
+//   }
+
+//   process.on("SIGINT", cleanup)
+//   process.on("SIGTERM", cleanup)
+//   process.on("exit", cleanup)
+// }
+
+// const handleAgentEvents = (agent: Agent) => {
+//   agent.events.connect(async (event) => {
+//     switch (event.type) {
+//       case "connected":
+//         console.log("✅ Connected to AI agent\n")
+//         break
+
+//       case "user_transcript":
+//         console.log(`👤 You: ${event.transcript}`)
+//         break
+
+//       case "agent_response":
+//         console.log(`🤖 Agent: ${event.response}`)
+//         break
+
+//       case "audio":
+//         await waitingIndicator.stop()
+//         const audioBuffer = Buffer.from(event.audioBase64, "base64")
+//         streamPlayback.write(audioBuffer)
+//         break
+
+//       case "interruption":
+//         console.log("🛑 User interrupted")
+//         streamPlayback?.stop()
+//         streamPlayback = player.playStream() // Reset playback stream
+//         break
+
+//       case "tool_call":
+//         waitingIndicator.start(streamPlayback)
+//         console.log(`🔧 Tool call: ${event.name}(${JSON.stringify(event.args)})`)
+//         break
+
+//       case "tool_result":
+//         console.log(`✅ Tool result: ${JSON.stringify(event.result)}`)
+//         break
+
+//       case "tool_error":
+//         console.error(`❌ Tool error: ${event.error}`)
+//         break
+
+//       case "disconnected":
+//         console.log("\n👋 Conversation ended, returning to dialtone\n")
+//         streamPlayback?.stop()
+//         state = "WAITING_FOR_VOICE"
+//         phoneService.send({ type: "remote_hang_up" })
+//         break
+
+//       case "error":
+//         console.error("Agent error:", event.error)
+//         break
+
+//       case "ping":
+//         break
+
+//       default:
+//         console.log(`😵‍💫 ${event.type}`)
+//         break
+//     }
+//   })
+// }
+
+// const incomingCallRing = (): CancelableTask => {
+//   let abortController = new AbortController()
+
+//   const playRingtone = async () => {
+//     while (!abortController.signal.aborted) {
+//       await ring(2000, abortController.signal)
+//       await sleep(4000)
+//     }
+//   }
+//   playRingtone().catch((error) => log.error("Ringer error:", error))
+
+//   return () => abortController.abort()
+// }
+
+// const handleError = (ctx: PhoneContext, event: { type: "error"; message?: string }) => {
+//   ctx.lastError = event.message
+//   log.error(`Phone error: ${event.message}`)
+//   return ctx
+// }
+
+// const incomingCall = (ctx: PhoneContext, event: { type: "incoming_call"; from?: string }) => {
+//   ctx.peer = event.from
+//   ctx.cancelRinger = incomingCallRing()
+//   log.info(`Incoming call from ${event.from}`)
+
+//   return ctx
+// }
+
+// const stopRinger = (ctx: PhoneContext) => {
+//   ctx.cancelRinger?.()
+//   ctx.cancelRinger = undefined
+//   return ctx
+// }
+
+// const playDialTone = (ctx: PhoneContext) => {
+//   const tone = new ToneGenerator()
+
+//   tone.loopTone([350, 440])
+
+//   ctx.cancelDialTone = () => {
+//     tone.stop()
+//   }
+
+//   return ctx
+// }
+
+// const playOutgoingTone = () => {
+//   const tone = new ToneGenerator()
+//   let canceled = false
+
+//   const play = async () => {
+//     while (!canceled) {
+//       await tone.playTone([440, 480], 2000)
+//       await sleep(4000)
+//     }
+//   }
+
+//   play().catch((error) => log.error("Outgoing tone error:", error))
+
+//   return () => {
+//     tone.stop()
+//     canceled = true
+//   }
+// }
+
+// const dialStart = (ctx: PhoneContext) => {
+//   ctx.numberDialed = 0
+//   ctx = stopDialTone(ctx)
+
+//   return ctx
+// }
+
+// const makeCall = (ctx: PhoneContext) => {
+//   log.info(`Dialing number: ${ctx.numberDialed}`)
+//   if (ctx.numberDialed === 1) {
+//     ctx.baresip.dial("+13476229543")
+//   } else if (ctx.numberDialed === 2) {
+//     ctx.baresip.dial("+18109643563")
+//   } else {
+//     const playTone = async () => {
+//       const tone = new ToneGenerator()
+//       await tone.playTone([900], 200)
+//       await tone.playTone([1350], 200)
+//       await tone.playTone([1750], 200)
+//     }
+//     playTone().catch((error) => log.error("Error playing tone:", error))
+//   }
+
+//   return ctx
+// }
+
+// const makeAgentCall = (ctx: PhoneContext) => {
+//   log.info(`Calling agent`)
+//   ctx.cancelAgent = ctx.startAgent()
+
+//   return ctx
+// }
+
+// const callAgentGuard = (ctx: PhoneContext) => {
+//   return ctx.numberDialed === 10
+// }
+
+// const callAnswered = (ctx: PhoneContext) => {
+//   ctx.baresip.accept()
+
+//   ctx.cancelDialTone?.()
+//   ctx.cancelDialTone = undefined
+
+//   ctx.cancelRinger?.()
+//   ctx.cancelRinger = undefined
+
+//   return ctx
+// }
+
+// const stopCall = (ctx: PhoneContext) => {
+//   ctx.baresip.hangUp()
+//   return ctx
+// }
+
+// const stopAgent = (ctx: PhoneContext) => {
+//   log.info("🛑 Stopping agent")
+//   ctx.cancelAgent?.()
+//   ctx.cancelAgent = undefined
+//   return ctx
+// }
+
+// const stopDialTone = (ctx: PhoneContext) => {
+//   ctx.cancelDialTone?.()
+//   ctx.cancelDialTone = undefined
+
+//   return ctx
+// }
+
+// const digitIncrement = (ctx: PhoneContext) => {
+//   ctx.numberDialed += 1
+//   return ctx
+// }

src/pins/README.md

@@ -4,11 +4,12 @@ High-level GPIO library for Bun using libgpiod v2 with automatic resource manage
 
 ## Features
 
-- Type-safe TypeScript API with autocomplete for pin names
+- True event-driven GPIO with worker-based architecture (<10ms latency)
+- Zero CPU usage when idle (blocking on hardware events)
+- Type-safe TypeScript API
 - Automatic resource cleanup with `using` keyword
 - Hardware debouncing via kernel
-- Event-driven input handling
-- Efficient multi-pin monitoring with input groups
+- Callback-based event handling with multiple listeners
 - Zero external dependencies (uses Bun FFI)
 
 ## Requirements
@@ -36,10 +37,13 @@ for (let i = 0; i < 10; i++) {
 using button = gpio.input(20, { pull: "up", debounce: 10 })
 console.log(button.value)
 
-// Listen for button events
-for await (const event of button.events()) {
+// Listen for button events with callback
+button.onChange((event) => {
   console.log(event.value === 0 ? "Pressed!" : "Released")
-}
+})
+
+// Keep process running
+await new Promise(() => {})
 ```
 
 ## API
@@ -86,27 +90,6 @@ Options:
 - `debounce?: number` - Debounce period in milliseconds (default: 0)
 - `edge?: 'rising' | 'falling' | 'both'` - Edge detection (default: 'both')
 
-#### `gpio.inputGroup(config)`
-
-Monitor multiple inputs efficiently with a single file descriptor. Pin names are fully type-safe!
-
-```typescript
-using inputs = gpio.inputGroup({
-  hook: { pin: 20, pull: "up" },
-  rotary: { pin: 21, pull: "up", debounce: 1 },
-  button: { pin: 22, pull: "down" },
-})
-
-// Access individual pins (fully typed!)
-console.log(inputs.pins.hook.value)     // TypeScript knows about .hook
-console.log(inputs.pins.button.value)   // TypeScript knows about .button
-
-// Monitor all pins
-for await (const event of inputs.events()) {
-  console.log(`${event.pin}: ${event.value}`)  // event.pin is "hook" | "rotary" | "button"
-}
-```
-
 #### `gpio.listChips()`
 
 List available GPIO chips.
@@ -117,22 +100,30 @@ console.log(chips)
 // [{ path: '/dev/gpiochip0', name: 'pinctrl-bcm2835', label: '...', numLines: 58 }]
 ```
 
-### InputPin
+### Input
 
 ```typescript
 using button = gpio.input(20)
 
-// Read current state
+// Read current state (cached from last event)
 const value: 0 | 1 = button.value
 
+// Listen for changes (returns unsubscribe function)
+const unsubscribe = button.onChange((event) => {
+  console.log(event.value, event.timestamp)
+})
+
+// Add multiple listeners
+const unsub2 = button.onChange((event) => {
+  console.log("Second listener:", event.value)
+})
+
+// Remove specific listener
+unsubscribe()
+
 // Wait for specific value
 await button.waitForValue(0)        // wait for LOW
 await button.waitForValue(1, 5000)  // wait for HIGH with 5s timeout
-
-// Event stream
-for await (const event of button.events()) {
-  console.log(event.value, event.timestamp)
-}
 ```
 
 ### OutputPin
@@ -146,29 +137,23 @@ const value = led.value
 led.toggle()
 ```
 
-### InputGroup
+## Architecture
 
-```typescript
-using inputs = gpio.inputGroup({
-  switch: { pin: 16, pull: "up" },
-  button: { pin: 20, pull: "up", debounce: 10 }
-})
+### Worker-Based Event Handling
 
-// Access pins with full type safety
-inputs.pins.switch.value  // ✓ TypeScript autocomplete
-inputs.pins.button.value  // ✓ TypeScript autocomplete
+Each input spawns a dedicated Web Worker that:
 
-// Wait for specific pin values
-await inputs.pins.button.waitForValue(0)        // wait for button to go LOW
-await inputs.pins.switch.waitForValue(1, 3000)  // wait for switch to go HIGH with timeout
+1. Blocks on `gpiod_line_request_wait_edge_events()` with `-1` timeout (infinite)
+2. Wakes instantly when hardware GPIO edge event occurs
+3. Reads event and posts message to main thread
+4. Main thread fires registered callbacks
 
-// Monitor all pins
-for await (const event of inputs.events()) {
-  event.pin        // Type: 'switch' | 'button'
-  event.value      // Type: 0 | 1
-  event.timestamp  // Type: bigint (nanoseconds)
-}
-```
+**Benefits:**
+
+- **True blocking**: Zero CPU usage when idle
+- **Low latency**: <10ms response time (vs 100ms with polling)
+- **Independent inputs**: Each input has its own worker
+- **Clean shutdown**: Workers terminated on close, kernel handles GPIO cleanup
 
 ## Resource Management
 
@@ -176,17 +161,24 @@ for await (const event of inputs.events()) {
 
 ```typescript
 // Good - automatic cleanup
-{
-  using led = gpio.output(17)
+using led = gpio.output(17) // Automatically released because of `using`
 led.value = 1
-} // Automatically released
+```
 
-// Bad - manual cleanup required
+```typescript
+// Meh - manual cleanup required
 const led = gpio.output(17)
 led.value = 1
 led.close() // Must call manually
 ```
 
+```typescript
+// Bad - leaks resources
+const led = gpio.output(17)
+led.value = 1
+// Forgot to close() - resource leak!
+```
+
 ## Hardware Setup
 
 ### Pull Resistors
@@ -197,6 +189,7 @@ Pull resistors prevent floating input values when nothing is connected to the pi
 - **Pull-down + button to VCC**: When released, pin reads LOW (0). When pressed, pin reads HIGH (1).
 
 **Important:** Match your pull resistor to your wiring:
+
 - Button to ground → use `pull: "up"`
 - Button to VCC (3.3V) → use `pull: "down"`
 
@@ -252,26 +245,27 @@ import { GPIO } from "@/pins"
 
 const gpio = new GPIO()
 
-using inputs = gpio.inputGroup({
-  button: { pin: 20, pull: "up", debounce: 10 },
-  switch: { pin: 16, pull: "up" }
-})
-
+using button = gpio.input(20, { pull: "up", debounce: 10 })
+using switchInput = gpio.input(16, { pull: "up" })
 using led = gpio.output(21)
 
 // Set LED based on switch state
-if (inputs.pins.switch.value === 1) {
-  led.value = 1
-}
+led.value = switchInput.value
 
 // Toggle LED when button pressed
-for await (const event of inputs.events()) {
-  if (event.pin === "button" && event.value === 0) {
+button.onChange((event) => {
+  if (event.value === 0) {
     led.toggle()
-  } else if (event.pin === "switch") {
+  }
+})
+
+// Mirror switch to LED
+switchInput.onChange((event) => {
   led.value = event.value
-  }
-}
+})
+
+// Keep process running
+await new Promise(() => {})
 ```
 
 ### Rotary Phone Dialer
@@ -281,18 +275,31 @@ import { GPIO } from "@/pins"
 
 const gpio = new GPIO()
 
-using inputs = gpio.inputGroup({
-  hook: { pin: 20, pull: "up" },
-  rotary: { pin: 21, pull: "up", debounce: 1 },
+using hook = gpio.input(27, { pull: "up", debounce: 3 })
+using rotaryInUse = gpio.input(22, { pull: "up", debounce: 3 })
+using rotaryNumber = gpio.input(23, { pull: "up", debounce: 3 })
+
+let digit = 0
+
+hook.onChange((event) => {
+  console.log(event.value === 0 ? "Phone picked up" : "Phone hung up")
 })
 
-for await (const event of inputs.events()) {
-  if (event.pin === "hook") {
-    console.log(event.value === 0 ? "Phone picked up" : "Phone hung up")
-  } else if (event.pin === "rotary" && event.value === 0) {
-    console.log("Rotary pulse")
+rotaryInUse.onChange((event) => {
+  if (event.value === 0) {
+    digit = 0
+  } else {
+    console.log(`Dialed digit: ${digit}`)
   }
+})
+
+rotaryNumber.onChange((event) => {
+  if (event.value === 1) {
+    digit += 1
   }
+})
+
+await new Promise(() => {})
 ```
 
 ## Troubleshooting

src/pins/gpio-helpers.ts

@@ -0,0 +1,101 @@
+import type { Pointer } from "bun:ffi"
+import { gpiod, GPIOD_LINE_DIRECTION_INPUT, GPIOD_LINE_DIRECTION_OUTPUT } from "./ffi"
+import { cstr, mapPullToLibgpiod, mapEdgeToLibgpiod } from "./utils"
+import type { PullMode, EdgeMode } from "./types"
+
+type LineRequestResult = {
+  chip: Pointer
+  request: Pointer
+}
+
+export type InputLineConfig = {
+  chipPath: string
+  offset: number
+  pull: PullMode
+  debounce: number
+  edge: EdgeMode
+}
+
+export type OutputLineConfig = {
+  chipPath: string
+  offset: number
+  initialValue: 0 | 1
+}
+
+const cleanup = (message: string): never => {
+  throw new Error(message)
+}
+
+const requestLine = (
+  chipPath: string,
+  offset: number,
+  consumer: string,
+  configureSettings: (settings: Pointer) => void
+): LineRequestResult => {
+  const chip = gpiod.gpiod_chip_open(cstr(chipPath))
+  if (!chip) cleanup("Failed to open GPIO chip")
+
+  const settings = gpiod.gpiod_line_settings_new()
+  if (!settings) {
+    gpiod.gpiod_chip_close(chip)
+    cleanup("Failed to create line settings")
+  }
+
+  configureSettings(settings!)
+
+  const lineConfig = gpiod.gpiod_line_config_new()
+  if (!lineConfig) {
+    gpiod.gpiod_line_settings_free(settings)
+    gpiod.gpiod_chip_close(chip)
+    cleanup("Failed to create line config")
+  }
+
+  const offsets = new Uint32Array([offset])
+  const ret = gpiod.gpiod_line_config_add_line_settings(lineConfig, offsets, 1, settings)
+  gpiod.gpiod_line_settings_free(settings)
+
+  if (ret !== 0) {
+    gpiod.gpiod_line_config_free(lineConfig)
+    gpiod.gpiod_chip_close(chip)
+    cleanup("Failed to add line settings")
+  }
+
+  const requestConfig = gpiod.gpiod_request_config_new()
+  if (!requestConfig) {
+    gpiod.gpiod_line_config_free(lineConfig)
+    gpiod.gpiod_chip_close(chip)
+    cleanup("Failed to create request config")
+  }
+
+  gpiod.gpiod_request_config_set_consumer(requestConfig, cstr(consumer))
+
+  const request = gpiod.gpiod_chip_request_lines(chip, requestConfig, lineConfig)
+  gpiod.gpiod_request_config_free(requestConfig)
+  gpiod.gpiod_line_config_free(lineConfig)
+
+  if (!request) {
+    gpiod.gpiod_chip_close(chip)
+    cleanup("Failed to request GPIO line")
+  }
+
+  return { chip: chip!, request: request! }
+}
+
+export const requestInputLine = (config: InputLineConfig): LineRequestResult => {
+  return requestLine(config.chipPath, config.offset, "bun-gpio-input", (settings) => {
+    gpiod.gpiod_line_settings_set_direction(settings, GPIOD_LINE_DIRECTION_INPUT)
+    gpiod.gpiod_line_settings_set_bias(settings, mapPullToLibgpiod(config.pull))
+    gpiod.gpiod_line_settings_set_edge_detection(settings, mapEdgeToLibgpiod(config.edge))
+
+    if (config.debounce > 0) {
+      gpiod.gpiod_line_settings_set_debounce_period_us(settings, config.debounce * 1000)
+    }
+  })
+}
+
+export const requestOutputLine = (config: OutputLineConfig): LineRequestResult => {
+  return requestLine(config.chipPath, config.offset, "bun-gpio", (settings) => {
+    gpiod.gpiod_line_settings_set_direction(settings, GPIOD_LINE_DIRECTION_OUTPUT)
+    gpiod.gpiod_line_settings_set_output_value(settings, config.initialValue)
+  })
+}

src/pins/gpio.ts

@@ -1,199 +0,0 @@
-import { ptr } from "bun:ffi"
-import { readdir } from "node:fs/promises"
-import { gpiod, cstr, GPIOD_LINE_DIRECTION_OUTPUT, GPIOD_LINE_DIRECTION_INPUT } from "./ffi"
-import { OutputPin } from "./output"
-import { InputPin } from "./input"
-import { InputGroup } from "./input-group"
-import { ChipNotFoundError, PinInUseError } from "./errors"
-import { mapPullToLibgpiod, mapEdgeToLibgpiod, hashInputConfig } from "./utils"
-import type { OutputOptions, InputOptions, PullMode, ChipInfo } from "./types"
-
-export class GPIO {
-  #chipPath: string
-  #resetOnClose: boolean
-
-  constructor(options?: { chip?: string; resetOnClose?: boolean }) {
-    this.#chipPath = options?.chip ?? "/dev/gpiochip0"
-    this.#resetOnClose = options?.resetOnClose ?? false
-  }
-
-  output(pin: number, options?: OutputOptions): OutputPin {
-    const initialValue = options?.initialValue ?? 0
-
-    const chip = gpiod.gpiod_chip_open(cstr(this.#chipPath))
-    if (!chip) {
-      throw new ChipNotFoundError(this.#chipPath)
-    }
-
-    try {
-      const reqConfig = gpiod.gpiod_request_config_new()
-      gpiod.gpiod_request_config_set_consumer(reqConfig, cstr("bun-gpio"))
-
-      const lineSettings = gpiod.gpiod_line_settings_new()
-      gpiod.gpiod_line_settings_set_direction(lineSettings, GPIOD_LINE_DIRECTION_OUTPUT)
-      gpiod.gpiod_line_settings_set_output_value(lineSettings, initialValue)
-
-      const lineConfig = gpiod.gpiod_line_config_new()
-      const offsets = new Uint32Array([pin])
-      gpiod.gpiod_line_config_add_line_settings(lineConfig, ptr(offsets), 1, lineSettings)
-
-      const request = gpiod.gpiod_chip_request_lines(chip, reqConfig, lineConfig)
-
-      gpiod.gpiod_line_settings_free(lineSettings)
-      gpiod.gpiod_line_config_free(lineConfig)
-      gpiod.gpiod_request_config_free(reqConfig)
-
-      if (!request) {
-        gpiod.gpiod_chip_close(chip)
-        throw new PinInUseError(pin)
-      }
-
-      let resetValue: 0 | 1 | undefined
-      if (this.#resetOnClose) {
-        const currentValue = gpiod.gpiod_line_request_get_value(request, pin)
-        if (currentValue === -1) {
-          console.warn(`Failed to read initial value for pin ${pin}, assuming 0`)
-          resetValue = 0
-        } else {
-          resetValue = currentValue as 0 | 1
-        }
-      }
-
-      return new OutputPin(chip, request, pin, resetValue)
-    } catch (err) {
-      gpiod.gpiod_chip_close(chip)
-      throw err
-    }
-  }
-
-  input(pin: number, options?: InputOptions): InputPin<"pin"> {
-    const group = this.inputGroup({
-      pin: { pin, ...options },
-    })
-
-    return new InputPin(group, "pin")
-  }
-
-  inputGroup<T extends Record<string, { pin: number } & InputOptions>>(
-    config: T
-  ): InputGroup<keyof T & string> {
-    const chip = gpiod.gpiod_chip_open(cstr(this.#chipPath))
-    if (!chip) {
-      throw new ChipNotFoundError(this.#chipPath)
-    }
-
-    try {
-      const reqConfig = gpiod.gpiod_request_config_new()
-      gpiod.gpiod_request_config_set_consumer(reqConfig, cstr("bun-gpio"))
-
-      const lineConfig = gpiod.gpiod_line_config_new()
-
-      const groups = new Map<
-        string,
-        Array<{ name: string; pin: number; pull: PullMode; options: InputOptions }>
-      >()
-
-      for (const [name, pinConfig] of Object.entries(config)) {
-        const pull = pinConfig.pull ?? "up"
-        const debounce = pinConfig.debounce ?? 0
-        const edge = pinConfig.edge ?? "both"
-
-        const hash = hashInputConfig(pull, debounce, edge)
-        if (!groups.has(hash)) groups.set(hash, [])
-        groups.get(hash)!.push({ name, pin: pinConfig.pin, pull, options: pinConfig })
-      }
-
-      for (const [hash, pins] of groups) {
-        const firstPin = pins[0]
-        if (!firstPin) continue
-
-        const pull = firstPin.options.pull ?? "up"
-        const debounce = firstPin.options.debounce ?? 0
-        const edge = firstPin.options.edge ?? "both"
-
-        const lineSettings = gpiod.gpiod_line_settings_new()
-        gpiod.gpiod_line_settings_set_direction(lineSettings, GPIOD_LINE_DIRECTION_INPUT)
-        gpiod.gpiod_line_settings_set_bias(lineSettings, mapPullToLibgpiod(pull))
-        gpiod.gpiod_line_settings_set_edge_detection(lineSettings, mapEdgeToLibgpiod(edge))
-        gpiod.gpiod_line_settings_set_debounce_period_us(lineSettings, debounce * 1000)
-
-        const offsets = new Uint32Array(pins.map((p) => p.pin))
-        gpiod.gpiod_line_config_add_line_settings(
-          lineConfig,
-          ptr(offsets),
-          pins.length,
-          lineSettings
-        )
-
-        gpiod.gpiod_line_settings_free(lineSettings)
-      }
-
-      const request = gpiod.gpiod_chip_request_lines(chip, reqConfig, lineConfig)
-
-      gpiod.gpiod_line_config_free(lineConfig)
-      gpiod.gpiod_request_config_free(reqConfig)
-
-      if (!request) {
-        gpiod.gpiod_chip_close(chip)
-        const firstConfig = Object.values(config)[0]
-        throw new PinInUseError(firstConfig?.pin ?? 0)
-      }
-
-      const pinMap: Record<string, { offset: number; pull: PullMode }> = {}
-      for (const [name, pinConfig] of Object.entries(config)) {
-        pinMap[name] = {
-          offset: pinConfig.pin,
-          pull: pinConfig.pull ?? "up",
-        }
-      }
-
-      return new InputGroup(chip, request, pinMap)
-    } catch (err) {
-      gpiod.gpiod_chip_close(chip)
-      throw err
-    }
-  }
-
-  async listChips(): Promise<ChipInfo[]> {
-    const chips: ChipInfo[] = []
-
-    try {
-      const files = await readdir("/dev")
-      const chipFiles = files.filter((f) => f.startsWith("gpiochip"))
-
-      for (const file of chipFiles) {
-        const path = `/dev/${file}`
-
-        try {
-          const chip = gpiod.gpiod_chip_open(cstr(path))
-          if (!chip) continue
-
-          const info = gpiod.gpiod_chip_get_info(chip)
-          if (!info) {
-            gpiod.gpiod_chip_close(chip)
-            continue
-          }
-
-          const name = gpiod.gpiod_chip_info_get_name(info)
-          const label = gpiod.gpiod_chip_info_get_label(info)
-          const numLines = gpiod.gpiod_chip_info_get_num_lines(info)
-
-          chips.push({
-            path,
-            name: String(name || ""),
-            label: String(label || ""),
-            numLines: Number(numLines),
-          })
-
-          gpiod.gpiod_chip_close(chip)
-        } catch {
-          continue
-        }
-      }
-    } catch {
-      // /dev might not be accessible, return empty array
-    }
-
-    return chips
-  }
-}

src/pins/index.ts

@@ -1,17 +1,87 @@
-export { GPIO } from "./gpio"
-export {
+import { readdir } from "node:fs/promises"
+import { gpiod, cstr } from "./ffi"
+import { Output } from "./output"
+import { Input } from "./input"
+import type * as Type from "./types"
+import {
   GPIOError,
   PermissionError,
   PinInUseError,
   ChipNotFoundError,
   InvalidConfigError,
 } from "./errors"
-export type {
-  InputOptions,
-  OutputOptions,
-  InputEvent,
-  InputGroupEvent,
-  ChipInfo,
-  PullMode,
-  EdgeMode,
-} from "./types"
+
+class GPIO {
+  #chipPath: string
+
+  constructor(options?: { chip?: string }) {
+    this.#chipPath = options?.chip ?? "/dev/gpiochip0"
+  }
+
+  output(pin: number, options?: Type.OutputOptions): Output {
+    return new Output(this.#chipPath, pin, options)
+  }
+
+  input(pin: number, options?: Type.InputOptions): Input {
+    return new Input(this.#chipPath, pin, options)
+  }
+
+  async listChips(): Promise<Type.ChipInfo[]> {
+    const chips: Type.ChipInfo[] = []
+
+    try {
+      const files = await readdir("/dev")
+      const chipFiles = files.filter((f) => f.startsWith("gpiochip"))
+
+      for (const file of chipFiles) {
+        const path = `/dev/${file}`
+
+        try {
+          const chip = gpiod.gpiod_chip_open(cstr(path))
+          if (!chip) continue
+
+          const info = gpiod.gpiod_chip_get_info(chip)
+          if (!info) {
+            gpiod.gpiod_chip_close(chip)
+            continue
+          }
+
+          const name = gpiod.gpiod_chip_info_get_name(info)
+          const label = gpiod.gpiod_chip_info_get_label(info)
+          const numLines = gpiod.gpiod_chip_info_get_num_lines(info)
+
+          chips.push({
+            path,
+            name: String(name || ""),
+            label: String(label || ""),
+            numLines: Number(numLines),
+          })
+
+          gpiod.gpiod_chip_close(chip)
+        } catch {
+          continue
+        }
+      }
+    } catch {
+      // /dev might not be accessible, return empty array
+    }
+
+    return chips
+  }
+
+  static Error = GPIOError
+  static PermissionError = PermissionError
+  static PinInUseError = PinInUseError
+  static ChipNotFoundError = ChipNotFoundError
+  static InvalidConfigError = InvalidConfigError
+}
+
+namespace GPIO {
+  export type PullMode = Type.PullMode
+  export type EdgeMode = Type.EdgeMode
+  export type InputOptions = Type.InputOptions
+  export type OutputOptions = Type.OutputOptions
+  export type InputEvent = Type.InputEvent
+}
+
+export default GPIO

src/pins/input-group.ts

@@ -1,194 +0,0 @@
-import type { Pointer } from "bun:ffi"
-import { gpiod } from "./ffi"
-import { mapLibgpiodEdgeToPressedState } from "./utils"
-import type { PullMode, InputEvent, InputGroupEvent, PinConfig } from "./types"
-
-export class InputGroup<T extends string = string> {
-  #closed = false
-  #chip: Pointer
-  #request: Pointer
-  #pinMap: Map<string, { offset: number; pull: PullMode }>
-  #offsetMap: Map<number, { name: string; pull: PullMode }>
-  #eventBuffer: Pointer | undefined
-  #eventListeners: Array<(event: InputGroupEvent<T>) => void> = []
-  #closeHandlers: Array<() => void> = []
-
-  constructor(chip: Pointer, request: Pointer, pinConfig: PinConfig) {
-    this.#chip = chip
-    this.#request = request
-
-    this.#pinMap = new Map()
-    this.#offsetMap = new Map()
-
-    for (const [name, config] of Object.entries(pinConfig)) {
-      this.#pinMap.set(name, config)
-      this.#offsetMap.set(config.offset, { name, pull: config.pull })
-    }
-  }
-
-  get pins(): Record<T, { readonly value: 0 | 1; waitForValue: (targetValue: 0 | 1, timeout?: number) => Promise<void> }> {
-    const result = {} as Record<T, { readonly value: 0 | 1; waitForValue: (targetValue: 0 | 1, timeout?: number) => Promise<void> }>
-
-    for (const [name, config] of this.#pinMap) {
-      const offset = config.offset
-      const closed = () => this.#closed
-      const request = this.#request
-      const pinName = name
-
-      Object.defineProperty(result, name, {
-        get: () => ({
-          get value(): 0 | 1 {
-            if (closed()) throw new Error("InputGroup is closed")
-            const ret = gpiod.gpiod_line_request_get_value(request, offset)
-            if (ret === -1) throw new Error("Failed to get pin value")
-            return ret as 0 | 1
-          },
-          waitForValue: (targetValue: 0 | 1, timeout?: number) => this.#waitForPinValue(pinName as T, targetValue, timeout)
-        }),
-        enumerable: true
-      })
-    }
-
-    return result
-  }
-
-  async #waitForPinValue(pinName: T, targetValue: 0 | 1, timeout?: number): Promise<void> {
-    return new Promise((resolve, reject) => {
-      if (this.#closed) {
-        reject(new Error("InputGroup is closed"))
-        return
-      }
-
-      let timeoutId: ReturnType<typeof setTimeout> | undefined
-
-      const cleanup = () => {
-        if (timeoutId) clearTimeout(timeoutId)
-        this.#eventListeners = this.#eventListeners.filter((l) => l !== listener)
-        this.#closeHandlers = this.#closeHandlers.filter((h) => h !== onClose)
-      }
-
-      const onClose = () => {
-        cleanup()
-        reject(new Error("InputGroup closed while waiting"))
-      }
-
-      const listener = (event: InputGroupEvent<T>) => {
-        if (event.pin !== pinName) return
-        if (event.value !== targetValue) return
-
-        cleanup()
-        resolve()
-      }
-
-      if (timeout) {
-        timeoutId = setTimeout(() => {
-          cleanup()
-          reject(new Error(`Timeout waiting for pin ${pinName} to become ${targetValue}`))
-        }, timeout)
-      }
-
-      this.#eventListeners.push(listener)
-      this.#closeHandlers.push(onClose)
-      this.#startEventLoop()
-    })
-  }
-
-  async *events(): AsyncGenerator<InputGroupEvent<T>> {
-    if (this.#closed) throw new Error("InputGroup is closed")
-
-    const eventQueue: InputGroupEvent<T>[] = []
-    let resolve: (() => void) | undefined
-
-    const listener = (event: InputGroupEvent<T>) => {
-      eventQueue.push(event)
-      resolve?.()
-    }
-
-    this.#eventListeners.push(listener)
-    this.#startEventLoop()
-
-    try {
-      while (!this.#closed) {
-        if (eventQueue.length === 0) {
-          await new Promise<void>((r) => {
-            resolve = r
-          })
-        }
-
-        const event = eventQueue.shift()
-        if (event) yield event
-      }
-    } finally {
-      this.#eventListeners = this.#eventListeners.filter((l) => l !== listener)
-    }
-  }
-
-  #startEventLoop() {
-    if (this.#eventBuffer !== undefined) return
-
-    const buffer = gpiod.gpiod_edge_event_buffer_new(1)
-    if (!buffer) throw new Error("Failed to create event buffer")
-
-    this.#eventBuffer = buffer
-    this.#runEventLoop()
-  }
-
-  async #runEventLoop() {
-    try {
-      while (!this.#closed && this.#eventListeners.length > 0) {
-        const ret = gpiod.gpiod_line_request_wait_edge_events(this.#request, 100_000_000)
-
-        if (ret === -1 || ret === 0) {
-          await Bun.sleep(0)
-          continue
-        }
-
-        const numEvents = gpiod.gpiod_line_request_read_edge_events(
-          this.#request,
-          this.#eventBuffer!,
-          1
-        )
-
-        if (numEvents > 0) {
-          const event = gpiod.gpiod_edge_event_buffer_get_event(this.#eventBuffer!, 0)
-          const edgeType = gpiod.gpiod_edge_event_get_event_type(event)
-          const timestamp = gpiod.gpiod_edge_event_get_timestamp_ns(event)
-          const offset = gpiod.gpiod_edge_event_get_line_offset(event)
-
-          const pinInfo = this.#offsetMap.get(offset)
-          if (!pinInfo) continue
-
-          const pressed = mapLibgpiodEdgeToPressedState(edgeType, pinInfo.pull)
-          const value = (pressed ? (pinInfo.pull === "up" ? 0 : 1) : (pinInfo.pull === "up" ? 1 : 0)) as 0 | 1
-          const inputEvent: InputGroupEvent<T> = { pin: pinInfo.name as T, value, timestamp }
-
-          for (const listener of this.#eventListeners) {
-            listener(inputEvent)
-          }
-        }
-      }
-    } finally {
-      if (this.#eventBuffer) {
-        gpiod.gpiod_edge_event_buffer_free(this.#eventBuffer)
-        this.#eventBuffer = undefined
-      }
-    }
-  }
-
-  close() {
-    if (this.#closed) return
-    this.#closed = true
-
-    for (const handler of this.#closeHandlers) {
-      handler()
-    }
-    this.#closeHandlers = []
-
-    gpiod.gpiod_line_request_release(this.#request)
-    gpiod.gpiod_chip_close(this.#chip)
-  }
-
-  [Symbol.dispose]() {
-    this.close()
-  }
-}

src/pins/input-worker.ts

@@ -0,0 +1,84 @@
+import { gpiod, GPIOD_EDGE_EVENT_RISING_EDGE } from "./ffi"
+import { requestInputLine } from "./gpio-helpers"
+import type { PullMode, EdgeMode } from "./types"
+
+type WorkerConfig = {
+  chipPath: string
+  offset: number
+  pull: PullMode
+  debounce: number
+  edge: EdgeMode
+}
+
+type WorkerMessage =
+  | { type: "ready"; initialValue: 0 | 1 }
+  | { type: "event"; value: 0 | 1; timestamp: bigint }
+  | { type: "error"; message: string }
+
+const postMessage = (message: WorkerMessage) => {
+  self.postMessage(message)
+}
+
+const cleanup = (message: string): never => {
+  postMessage({ type: "error", message })
+  self.close()
+  throw new Error(message)
+}
+
+const mapEdgeToValue = (edgeType: number, pull: PullMode): 0 | 1 => {
+  // Pull-up: rising edge = released (1), falling edge = pressed (0)
+  // Pull-down: rising edge = pressed (1), falling edge = released (0)
+  if (pull === "up") {
+    return edgeType === GPIOD_EDGE_EVENT_RISING_EDGE ? 1 : 0
+  }
+  return edgeType === GPIOD_EDGE_EVENT_RISING_EDGE ? 1 : 0
+}
+
+const run = (config: WorkerConfig) => {
+  const { chip, request } = requestInputLine(config)
+
+  const initialValue = gpiod.gpiod_line_request_get_value(request, config.offset)
+  if (initialValue === -1) {
+    gpiod.gpiod_line_request_release(request)
+    gpiod.gpiod_chip_close(chip)
+    cleanup("Failed to read initial value")
+  }
+
+  postMessage({ type: "ready", initialValue: initialValue as 0 | 1 })
+
+  const buffer = gpiod.gpiod_edge_event_buffer_new(1)
+  if (!buffer) {
+    gpiod.gpiod_line_request_release(request)
+    gpiod.gpiod_chip_close(chip)
+    cleanup("Failed to create event buffer")
+  }
+
+  while (true) {
+    // Block forever (-1 timeout) until edge event occurs
+    const waitResult = gpiod.gpiod_line_request_wait_edge_events(request, -1)
+
+    if (waitResult === 1) {
+      const numEvents = gpiod.gpiod_line_request_read_edge_events(request, buffer, 1)
+      if (numEvents === -1) cleanup("Failed to read edge events")
+
+      const event = gpiod.gpiod_edge_event_buffer_get_event(buffer, 0)
+      const edgeType = gpiod.gpiod_edge_event_get_event_type(event)
+      const timestamp = gpiod.gpiod_edge_event_get_timestamp_ns(event)
+
+      const value = mapEdgeToValue(edgeType, config.pull)
+
+      postMessage({ type: "event", value, timestamp })
+    } else if (waitResult === -1) {
+      cleanup("GPIO wait_edge_events failed")
+    }
+  }
+
+  // Worker terminates - kernel cleans up GPIO resources automatically
+}
+
+self.onmessage = (event: MessageEvent<WorkerConfig>) => {
+  self.onmessage = () => {
+    throw new Error("Worker already initialized")
+  }
+  run(event.data)
+}

src/pins/input.ts

@@ -1,36 +1,90 @@
-import type { Pointer } from "bun:ffi"
-import { InputGroup } from "./input-group"
-import type { PullMode, InputEvent } from "./types"
+import type { InputEvent, InputOptions } from "./types"
 
-export class InputPin<T extends string = string> {
-  #group: InputGroup<T>
-  #pinName: T
+type WorkerMessage =
+  | { type: "ready"; initialValue: 0 | 1 }
+  | { type: "event"; value: 0 | 1; timestamp: bigint }
+  | { type: "error"; message: string }
 
-  constructor(group: InputGroup<T>, pinName: T) {
-    this.#group = group
-    this.#pinName = pinName
+export class Input {
+  #worker: Worker
+  #callbacks = new Set<(event: InputEvent) => void>()
+  #closed = false
+  #lastValue: 0 | 1 = 0
+
+  constructor(chipPath: string, offset: number, options: InputOptions = {}) {
+    const pull = options.pull ?? "up"
+    const debounce = options.debounce ?? 0
+    const edge = options.edge ?? "both"
+
+    this.#worker = new Worker(new URL("./input-worker.ts", import.meta.url).href)
+
+    this.#worker.onmessage = (msg: MessageEvent<WorkerMessage>) => {
+      if (this.#closed) return
+
+      const data = msg.data
+
+      if (data.type === "ready") {
+        this.#lastValue = data.initialValue
+      } else if (data.type === "event") {
+        this.#lastValue = data.value
+        for (const callback of this.#callbacks) {
+          callback({ value: data.value, timestamp: data.timestamp })
+        }
+      } else if (data.type === "error") {
+        console.error(`GPIO Input Error (pin ${offset}):`, data.message)
+      }
+    }
+
+    this.#worker.postMessage({ chipPath, offset, pull, debounce, edge })
   }
 
   get value(): 0 | 1 {
-    return this.#group.pins[this.#pinName]!.value
+    if (this.#closed) throw new Error("Input is closed")
+    return this.#lastValue
+  }
+
+  onChange(callback: (event: InputEvent) => void): () => void {
+    if (this.#closed) throw new Error("Input is closed")
+    this.#callbacks.add(callback)
+    return () => this.#callbacks.delete(callback)
   }
 
   async waitForValue(targetValue: 0 | 1, timeout?: number): Promise<void> {
-    for await (const event of this.#group.events()) {
-      if (event.value === targetValue) {
-        return
-      }
-    }
+    if (this.#closed) throw new Error("Input is closed")
+
+    if (this.#lastValue === targetValue) return
+
+    return new Promise((resolve, reject) => {
+      let timeoutId: ReturnType<typeof setTimeout> | undefined
+
+      const cleanup = () => {
+        if (timeoutId) clearTimeout(timeoutId)
+        unsubscribe()
       }
 
-  async *events(): AsyncGenerator<InputEvent> {
-    for await (const event of this.#group.events()) {
-      yield { value: event.value, timestamp: event.timestamp }
+      const unsubscribe = this.onChange((event) => {
+        if (event.value === targetValue) {
+          cleanup()
+          resolve()
         }
+      })
+
+      if (!timeout) return
+
+      timeoutId = setTimeout(() => {
+        cleanup()
+        reject(new Error(`Timeout waiting for value ${targetValue}`))
+      }, timeout)
+    })
   }
 
   close() {
-    this.#group.close()
+    if (this.#closed) return
+    this.#closed = true
+
+    this.#callbacks.clear()
+    this.#worker.onmessage = null
+    this.#worker.terminate()
   }
 
   [Symbol.dispose]() {

src/pins/output.ts

@@ -1,30 +1,39 @@
 import type { Pointer } from "bun:ffi"
 import { gpiod } from "./ffi"
+import { requestOutputLine } from "./gpio-helpers"
+import type { OutputOptions } from "./types"
 
-export class OutputPin {
+export class Output {
   #closed = false
   #chip: Pointer
   #request: Pointer
-  #pin: number
+  #offset: number
   #resetValue?: 0 | 1
 
-  constructor(chip: Pointer, request: Pointer, pin: number, resetValue?: 0 | 1) {
+  constructor(chipPath: string, offset: number, options: OutputOptions = {}) {
+    const initialValue = options.initialValue ?? 0
+    const { chip, request } = requestOutputLine({ chipPath, offset, initialValue })
+
     this.#chip = chip
     this.#request = request
-    this.#pin = pin
-    this.#resetValue = resetValue
+    this.#offset = offset
+
+    if (options.resetOnClose) {
+      const currentValue = gpiod.gpiod_line_request_get_value(request, offset)
+      this.#resetValue = currentValue === -1 ? 0 : (currentValue as 0 | 1)
+    }
   }
 
   get value(): 0 | 1 {
-    if (this.#closed) throw new Error("OutputPin is closed")
-    const ret = gpiod.gpiod_line_request_get_value(this.#request, this.#pin)
+    if (this.#closed) throw new Error("Output is closed")
+    const ret = gpiod.gpiod_line_request_get_value(this.#request, this.#offset)
     if (ret === -1) throw new Error("Failed to get pin value")
     return ret as 0 | 1
   }
 
   set value(val: 0 | 1) {
-    if (this.#closed) throw new Error("OutputPin is closed")
-    const ret = gpiod.gpiod_line_request_set_value(this.#request, this.#pin, val)
+    if (this.#closed) throw new Error("Output is closed")
+    const ret = gpiod.gpiod_line_request_set_value(this.#request, this.#offset, val)
     if (ret === -1) throw new Error("Failed to set pin value")
   }
 
@@ -37,7 +46,7 @@ export class OutputPin {
     this.#closed = true
 
     if (this.#resetValue !== undefined) {
-      gpiod.gpiod_line_request_set_value(this.#request, this.#pin, this.#resetValue)
+      gpiod.gpiod_line_request_set_value(this.#request, this.#offset, this.#resetValue)
     }
 
     gpiod.gpiod_line_request_release(this.#request)

src/pins/tsconfig.worker.json

@@ -0,0 +1,7 @@
+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "lib": ["ESNext", "WebWorker"]
+  },
+  "include": ["input-worker.ts"]
+}

src/pins/types.ts

@@ -9,6 +9,7 @@ export type InputOptions = {
 
 export type OutputOptions = {
   initialValue?: 0 | 1 // default: 0
+  resetOnClose?: boolean // default: false
 }
 
 export type InputEvent = {
@@ -16,15 +17,9 @@ export type InputEvent = {
   timestamp: bigint // nanoseconds
 }
 
-export type InputGroupEvent<T extends string = string> = InputEvent & {
-  pin: T // name of the pin that fired
-}
-
 export type ChipInfo = {
   path: string
   name: string
   label: string
   numLines: number
 }
-
-export type PinConfig = Record<string, { offset: number; pull: PullMode }>

src/pins/utils.ts

@@ -38,10 +38,7 @@ export const mapEdgeToLibgpiod = (edge: EdgeMode): number => {
 // Hardware logic:
 // - Pull-up + button to GND: pressing pulls line LOW (falling edge = pressed)
 // - Pull-down + button to VCC: pressing pulls line HIGH (rising edge = pressed)
-export const mapLibgpiodEdgeToPressedState = (
-  edgeType: number,
-  pull: PullMode
-): boolean => {
+export const mapLibgpiodEdgeToPressedState = (edgeType: number, pull: PullMode): boolean => {
   if (pull === "up") {
     return edgeType === GPIOD_EDGE_EVENT_FALLING_EDGE
   } else if (pull === "down") {
@@ -51,10 +48,6 @@ export const mapLibgpiodEdgeToPressedState = (
   }
 }
 
-export const hashInputConfig = (
-  pull: PullMode,
-  debounce: number,
-  edge: EdgeMode
-): string => {
+export const hashInputConfig = (pull: PullMode, debounce: number, edge: EdgeMode): string => {
   return `${pull}-${debounce}-${edge}`
 }

src/sip.ts

@@ -0,0 +1,114 @@
+import { log } from "./utils/log.ts"
+import { Signal } from "./utils/signal.ts"
+import { processStdout, processStderr } from "./utils/stdio.ts"
+
+export class Baresip {
+  baresipArgs: string[]
+  process?: Bun.PipedSubprocess
+  callEstablished = new Signal<{ contact: string }>()
+  callReceived = new Signal<{ contact: string }>()
+  hungUp = new Signal()
+  error = new Signal<{ message: string }>()
+  registrationSuccess = new Signal()
+
+  constructor(baresipArgs: string[]) {
+    this.baresipArgs = baresipArgs
+  }
+
+  async connect() {
+    this.process = Bun.spawn(this.baresipArgs, {
+      stdout: "pipe",
+      stderr: "pipe",
+      onExit: (_proc, exitCode, signalCode, error) => {
+        log.debug(`📞 Baresip process exited (code: ${exitCode}, signal: ${signalCode})`)
+        if (error) {
+          log.error("Process error:", error)
+        }
+      },
+    })
+
+    Promise.all([
+      processStdout(this.process, (line) => this.#parseLine(line)),
+      processStderr(this.process),
+    ]).catch((error) => {
+      log.error("Error processing output:", error)
+    })
+  }
+
+  accept() {
+    executeCommand("a")
+  }
+
+  dial(phoneNumber: string) {
+    executeCommand(`d${phoneNumber}`)
+  }
+
+  hangUp() {
+    executeCommand("b")
+  }
+
+  disconnectAll() {
+    this.callEstablished.disconnect()
+    this.callReceived.disconnect()
+    this.hungUp.disconnect()
+    this.registrationSuccess.disconnect()
+  }
+
+  kill() {
+    if (!this.process) throw new Error("Process not started")
+    this.process.kill()
+    this.disconnectAll()
+    this.process = undefined
+  }
+
+  #parseLine(line: string) {
+    log.debug(`📞 Baresip: ${line}`)
+    const callEstablishedMatch = line.match(/Call established: (.+)/)
+    if (callEstablishedMatch) {
+      log.debug(`Call established with "${line}"`)
+      this.callEstablished.emit({ contact: callEstablishedMatch[1]! })
+    }
+
+    const callReceivedMatch = line.match(/Incoming call from: \+\d+ (\S+) -/)
+    if (callReceivedMatch) {
+      log.debug(`Incoming call from "${line}"`)
+      this.callReceived.emit({ contact: callReceivedMatch[1]!?.trim() })
+    }
+
+    const hangUpMatch = line.match(/(.+): session closed/)
+    if (hangUpMatch) {
+      log.debug(`Call hung up with "${line}"`)
+      this.hungUp.emit()
+    }
+
+    const callTerminatedMatch = line.match(/(.+) terminated \(duration: /)
+    if (callTerminatedMatch) {
+      log.debug(`⁉️ NOT HANDLED: Call terminated with "${line}"`)
+    }
+
+    const registrationSuccessMatch = line.match(/\[\d+ bindings?\]/)
+    if (registrationSuccessMatch) {
+      this.registrationSuccess.emit()
+    }
+
+    const registrationFailedMatch = line.match(/reg: sip:\S+ 403 Forbidden/)
+    const socketInUseMatch = line.match(/tcp: sock_bind:/)
+    if (registrationFailedMatch || socketInUseMatch) {
+      log.error(`⁉️ NOT HANDLED: Registration failed with "${line}"`)
+      this.error.emit({ message: line })
+    }
+  }
+}
+
+const executeCommand = async (command: string) => {
+  try {
+    const url = new URL(`/?${command}`, "http://127.0.0.1:8000")
+    const response = await Bun.fetch(url)
+
+    if (!response.ok) {
+      throw new Error(`Error executing command: ${response.statusText}`)
+    }
+  } catch (error) {
+    log.error("Failed to execute command:", error)
+  }
+}

src/test-buzz.ts

@@ -5,7 +5,7 @@
  * Tests device listing, player, recorder, and tone generation
  */
 
-import Buzz from "./src/buzz"
+import Buzz from "./buzz"
 
 console.log("🎵 Buzz Audio Library - Basic Test\n")
 

src/test-operator.ts

@@ -22,7 +22,7 @@ const runPhoneSystem = async (agentId: string, apiKey: string) => {
   let currentDialtone: Playback | undefined
   let currentBackgroundNoise: Playback | undefined
   let streamPlayback = player.playStream()
-  const waitingIndicator = new WaitingSounds(player, streamPlayback)
+  const waitingIndicator = new WaitingSounds(player)
 
   // Set up agent event listeners
   agent.events.connect(async (event) => {
@@ -52,7 +52,7 @@ const runPhoneSystem = async (agentId: string, apiKey: string) => {
         break
 
       case "tool_call":
-        waitingIndicator.start()
+        waitingIndicator.start(streamPlayback)
         console.log(`🔧 Tool call: ${event.name}(${JSON.stringify(event.args)})`)
         break
 
@@ -73,6 +73,14 @@ const runPhoneSystem = async (agentId: string, apiKey: string) => {
 
       case "error":
         console.error("Agent error:", event.error)
+        break
+
+      case "ping":
+        break
+
+      default:
+        console.log(`😵‍💫 ${event.type}`)
+        break
     }
   })
 

src/test-pins.ts

@@ -0,0 +1,39 @@
+import { GPIO } from "./pins"
+
+console.log(`kill -9 ${process.pid}`)
+
+const gpio = new GPIO()
+
+using led = gpio.output(21)
+using button = gpio.input(20, { pull: "up", debounce: 10 })
+using switchInput = gpio.input(16, { pull: "up", debounce: 10 })
+
+led.value = button.value
+
+button.onChange((event) => {
+  led.value = event.value
+})
+
+const switchEvent = new Promise<void>(async (resolve) => {
+  await switchInput.waitForValue(0)
+  console.log("Switch pressed!")
+  resolve()
+})
+
+process.on("SIGINT", () => {
+  button.close()
+  switchInput.close()
+  led.close()
+  process.exit(0)
+})
+
+process.on("SIGTERM", () => {
+  button.close()
+  switchInput.close()
+  led.close()
+  process.exit(0)
+})
+
+await switchEvent
+
+console.log(`👋 Goodbye!`)

src/utils/log.ts

@@ -0,0 +1,21 @@
+let showDebug = true
+let showInfo = true
+let showError = true
+
+export function setLogLevel(level: "debug" | "info" | "error" | "none") {
+  showDebug = level === "debug"
+  showInfo = level === "debug" || level === "info"
+  showError = level !== "none"
+}
+
+export const log = {
+  debug: (...args: any[]) => {
+    if (showDebug) console.debug("DEBUG: ", ...args)
+  },
+  info: (...args: any[]) => {
+    if (showInfo) console.log("INFO: ", ...args)
+  },
+  error: (...args: any[]) => {
+    if (showError) console.error("ERROR: ", ...args)
+  },
+}

src/utils/stdio.ts

@@ -0,0 +1,41 @@
+import { log } from "./log.ts"
+
+export const LineSplitter = () => {
+  let buffer = ""
+  return new TransformStream({
+    transform(chunk, controller) {
+      buffer += chunk
+      const parts = buffer.split(/\n/)
+      const lines = parts.slice(0, -1)
+      buffer = parts.at(-1) || ""
+
+      for (const line of lines) {
+        controller.enqueue(line)
+      }
+    },
+    flush(controller) {
+      if (buffer.length > 0) {
+        controller.enqueue(buffer)
+      }
+    },
+  })
+}
+
+export async function processStdout(
+  process: Bun.ReadableSubprocess,
+  onLine: (line: string) => void
+) {
+  for await (const line of process.stdout
+    .pipeThrough(new TextDecoderStream())
+    .pipeThrough(LineSplitter())) {
+    onLine(line)
+  }
+}
+
+export async function processStderr(process: Bun.ReadableSubprocess, prefix: string = "") {
+  for await (const line of process.stderr
+    .pipeThrough(new TextDecoderStream())
+    .pipeThrough(LineSplitter())) {
+    log.error(`❌ ${prefix}${line}`)
+  }
+}

src/utils/waiting-sounds.ts

@@ -7,13 +7,13 @@ export class WaitingSounds {
   typingPlayback?: Playback
   speakingPlayback?: Playback
 
-  constructor(private player: Player, private streamPlayback: StreamingPlayback) {}
+  constructor(private player: Player) {}
 
-  async start() {
+  async start(operatorStream: StreamingPlayback) {
     if (this.typingPlayback) return // Already playing
 
     this.#startTypingSounds()
-    this.#startSpeakingSounds()
+    this.#startSpeakingSounds(operatorStream)
   }
 
   async #startTypingSounds() {
@@ -35,17 +35,15 @@ export class WaitingSounds {
     })
   }
 
-  async #startSpeakingSounds() {
+  async #startSpeakingSounds(operatorStream: StreamingPlayback) {
     const playedSounds = new Set<string>()
     let dir: SoundDir | undefined
     return new Promise<void>(async (resolve) => {
-      // Don't start speaking until the stream playback buffer is empty!
-      while (this.streamPlayback.bufferEmptyFor < 1000) {
+      while (operatorStream.bufferEmptyFor < 1500) {
         await Bun.sleep(100)
       }
 
       do {
-        this.streamPlayback.bufferEmptyFor
         const lastSoundDir = dir
         const value = Math.random() * 100
         if (lastSoundDir === "body-noises") {

tsconfig.json

@@ -26,5 +26,6 @@
     "noUnusedLocals": false,
     "noUnusedParameters": false,
     "noPropertyAccessFromIndexSignature": false
-  }
+  },
+  "exclude": ["src/pins/input-worker.ts"]
 }