Version with audio and buzz

2026-08-18 22:03:12 +00:00 · 2023-07-16 21:50:48 +05:30
parent 2e6768e2bd
commit 3e2fa917c0
7 changed files with 860 additions and 110 deletions
@@ -1,22 +1,22 @@
-import './globals.css'
-import type { Metadata } from 'next'
-import { Inter } from 'next/font/google'
+import "./globals.css";
+import type { Metadata } from "next";
+import { Inter } from "next/font/google";

-const inter = Inter({ subsets: ['latin'] })
+const inter = Inter({ subsets: ["latin"] });

 export const metadata: Metadata = {
-  title: 'Create Next App',
-  description: 'Generated by create next app',
-}
+  title: "Create Next App",
+  description: "Generated by create next app",
+};

 export default function RootLayout({
  children,
 }: {
-  children: React.ReactNode
+  children: React.ReactNode;
 }) {
  return (
    <html lang="en">
      <body className={inter.className}>{children}</body>
    </html>
-  )
+  );
 }
@@ -1,113 +1,326 @@
-import Image from 'next/image'
+"use client";
+
+import Image from "next/image";
+import {
+  TParsedDMMResponse,
+  debounceReadingFunc,
+  parseDMMBuffer,
+  startBluetoothCoonection as startBluetoothConnection,
+} from "@/helpers/parseDMM";
+import { startBuzz } from "@/helpers/buzzSound";
+import {
+  MutableRefObject,
+  useEffect,
+  useRef,
+  useState,
+  Dispatch,
+  SetStateAction,
+} from "react";
+
+export function SpeakerOnIcon() {
+  return (
+    <svg
+      xmlns="http://www.w3.org/2000/svg"
+      fill="none"
+      viewBox="0 0 24 24"
+      strokeWidth={1.5}
+      stroke="currentColor"
+      className="w-6 h-6"
+    >
+      <path
+        strokeLinecap="round"
+        strokeLinejoin="round"
+        d="M19.114 5.636a9 9 0 010 12.728M16.463 8.288a5.25 5.25 0 010 7.424M6.75 8.25l4.72-4.72a.75.75 0 011.28.53v15.88a.75.75 0 01-1.28.53l-4.72-4.72H4.51c-.88 0-1.704-.507-1.938-1.354A9.01 9.01 0 012.25 12c0-.83.112-1.633.322-2.396C2.806 8.756 3.63 8.25 4.51 8.25H6.75z"
+      />
+    </svg>
+  );
+}
+
+export function SpeakerOffIcon() {
+  return (
+    <svg
+      xmlns="http://www.w3.org/2000/svg"
+      fill="none"
+      viewBox="0 0 24 24"
+      strokeWidth={1.5}
+      stroke="currentColor"
+      className="w-6 h-6"
+    >
+      <path
+        strokeLinecap="round"
+        strokeLinejoin="round"
+        d="M17.25 9.75L19.5 12m0 0l2.25 2.25M19.5 12l2.25-2.25M19.5 12l-2.25 2.25m-10.5-6l4.72-4.72a.75.75 0 011.28.531V19.94a.75.75 0 01-1.28.53l-4.72-4.72H4.51c-.88 0-1.704-.506-1.938-1.354A9.01 9.01 0 012.25 12c0-.83.112-1.633.322-2.395C2.806 8.757 3.63 8.25 4.51 8.25H6.75z"
+      />
+    </svg>
+  );
+}
+
+export function EyeIcon() {
+  return (
+    <svg
+      xmlns="http://www.w3.org/2000/svg"
+      fill="none"
+      viewBox="0 0 24 24"
+      strokeWidth={1.5}
+      stroke="currentColor"
+      className="w-6 h-6"
+    >
+      <path
+        strokeLinecap="round"
+        strokeLinejoin="round"
+        d="M2.036 12.322a1.012 1.012 0 010-.639C3.423 7.51 7.36 4.5 12 4.5c4.638 0 8.573 3.007 9.963 7.178.07.207.07.431 0 .639C20.577 16.49 16.64 19.5 12 19.5c-4.638 0-8.573-3.007-9.963-7.178z"
+      />
+      <path
+        strokeLinecap="round"
+        strokeLinejoin="round"
+        d="M15 12a3 3 0 11-6 0 3 3 0 016 0z"
+      />
+    </svg>
+  );
+}
+
+export function MegaphoneIcon() {
+  return (
+    <svg
+      xmlns="http://www.w3.org/2000/svg"
+      fill="none"
+      viewBox="0 0 24 24"
+      strokeWidth={1.5}
+      stroke="currentColor"
+      className="w-6 h-6"
+    >
+      <path
+        strokeLinecap="round"
+        strokeLinejoin="round"
+        d="M10.34 15.84c-.688-.06-1.386-.09-2.09-.09H7.5a4.5 4.5 0 110-9h.75c.704 0 1.402-.03 2.09-.09m0 9.18c.253.962.584 1.892.985 2.783.247.55.06 1.21-.463 1.511l-.657.38c-.551.318-1.26.117-1.527-.461a20.845 20.845 0 01-1.44-4.282m3.102.069a18.03 18.03 0 01-.59-4.59c0-1.586.205-3.124.59-4.59m0 9.18a23.848 23.848 0 018.835 2.535M10.34 6.66a23.847 23.847 0 008.835-2.535m0 0A23.74 23.74 0 0018.795 3m.38 1.125a23.91 23.91 0 011.014 5.395m-1.014 8.855c-.118.38-.245.754-.38 1.125m.38-1.125a23.91 23.91 0 001.014-5.395m0-3.46c.495.413.811 1.035.811 1.73 0 .695-.316 1.317-.811 1.73m0-3.46a24.347 24.347 0 010 3.46"
+      />
+    </svg>
+  );
+}
+
+export function useBuzzSound() {}
+
+export function useStateWithRef<TState>(
+  initialValue: TState,
+): [TState, Dispatch<SetStateAction<TState>>, MutableRefObject<TState>] {
+  const [value, setValue] = useState<TState>(initialValue);
+  const valueRef = useRef<TState>(initialValue);
+  valueRef.current = value;
+
+  return [value, setValue, valueRef];
+}

 export default function Home() {
-  return (
-    <main className="flex min-h-screen flex-col items-center justify-between p-24">
-      <div className="z-10 w-full max-w-5xl items-center justify-between font-mono text-sm lg:flex">
-        <p className="fixed left-0 top-0 flex w-full justify-center border-b border-gray-300 bg-gradient-to-b from-zinc-200 pb-6 pt-8 backdrop-blur-2xl dark:border-neutral-800 dark:bg-zinc-800/30 dark:from-inherit lg:static lg:w-auto  lg:rounded-xl lg:border lg:bg-gray-200 lg:p-4 lg:dark:bg-zinc-800/30">
-          Get started by editing&nbsp;
-          <code className="font-mono font-bold">src/app/page.tsx</code>
-        </p>
-        <div className="fixed bottom-0 left-0 flex h-48 w-full items-end justify-center bg-gradient-to-t from-white via-white dark:from-black dark:via-black lg:static lg:h-auto lg:w-auto lg:bg-none">
-          <a
-            className="pointer-events-none flex place-items-center gap-2 p-8 lg:pointer-events-auto lg:p-0"
-            href="https://vercel.com?utm_source=create-next-app&utm_medium=appdir-template&utm_campaign=create-next-app"
-            target="_blank"
-            rel="noopener noreferrer"
-          >
-            By{' '}
-            <Image
-              src="/vercel.svg"
-              alt="Vercel Logo"
-              className="dark:invert"
-              width={100}
-              height={24}
-              priority
-            />
-          </a>
-        </div>
-      </div>
+  const [printedValue, setPrintedValue] = useState<string | undefined>(
+    undefined,
+  );
+  const [liveValue, setLiveValue] = useState<string | undefined>(undefined);
+  const [isMute, setIsMute, isMuteRef] = useStateWithRef<boolean>(false);
+  const stopBuzzRef = useRef<(() => void) | undefined>(undefined);

-      <div className="relative flex place-items-center before:absolute before:h-[300px] before:w-[480px] before:-translate-x-1/2 before:rounded-full before:bg-gradient-radial before:from-white before:to-transparent before:blur-2xl before:content-[''] after:absolute after:-z-20 after:h-[180px] after:w-[240px] after:translate-x-1/3 after:bg-gradient-conic after:from-sky-200 after:via-blue-200 after:blur-2xl after:content-[''] before:dark:bg-gradient-to-br before:dark:from-transparent before:dark:to-blue-700 before:dark:opacity-10 after:dark:from-sky-900 after:dark:via-[#0141ff] after:dark:opacity-40 before:lg:h-[360px]">
+  let [selectedVoice, setSelectedVoice, selectedVoiceRef] = useStateWithRef<
+    string | undefined
+  >(undefined);
+  let [allVoices, setAllVoices] = useState<SpeechSynthesisVoice[]>();
+  let multimeterBluetoothDeviceRef = useRef<BluetoothDevice | undefined>(
+    undefined,
+  );
+  let multimeterDisconnectRef = useRef<(() => void) | undefined>(undefined);
+
+  const [showDisconnect, setShowDisconnect] = useState(false);
+  const showConnect = !showDisconnect;
+
+  function resetStatusAfterDisconnect() {
+    if (multimeterBluetoothDeviceRef.current !== undefined) {
+      // Only announce once
+      speak("Multimeter disconnected");
+    }
+    multimeterBluetoothDeviceRef.current = undefined;
+    multimeterDisconnectRef.current = undefined;
+    setLiveValue(undefined);
+    setPrintedValue(undefined);
+    setShowDisconnect(false);
+  }
+
+  function speak(value: string) {
+    let speech = new SpeechSynthesisUtterance();
+    speech.lang = "en";
+    speech.text = value;
+    speech.voice =
+      allVoices?.find(
+        ({ voiceURI }) => voiceURI === selectedVoiceRef.current,
+      ) || null;
+    speech.volume = isMuteRef.current ? 0 : 1;
+    window.speechSynthesis.speak(speech);
+  }
+
+  function handleConnectClick() {
+    const debouncedLogAndSpeak = debounceReadingFunc((value) => {
+      value = value as string;
+      setPrintedValue(value);
+      console.log(value);
+      speak(value.replace("-", "Minus "));
+    }, 700);
+
+    function handleBuzz(parsedDMMresponse: TParsedDMMResponse) {
+      const { isBuzz, isDiode } = parsedDMMresponse;
+      // If BUZZ sign & not DIODE sign & not mute
+      if (isBuzz && !isDiode && !isMuteRef.current) {
+        // Multimeter is buzzing, reciprocate
+        const { stop } = startBuzz();
+        stopBuzzRef.current = stop;
+      } else {
+        stopBuzzRef.current?.();
+      }
+    }
+
+    function onNotify(bufferAsArray: number[]) {
+      const parsedDMMresponse = parseDMMBuffer(bufferAsArray);
+      const printValue = parsedDMMresponse.toString();
+      // Set live value
+      setLiveValue(printValue);
+
+      // Debounced announce value
+      debouncedLogAndSpeak(printValue);
+
+      // Buzz, if needed
+      handleBuzz(parsedDMMresponse);
+    }
+    startBluetoothConnection({
+      onDisconnect: () => resetStatusAfterDisconnect(),
+      onNotify,
+    }).then((obj) => {
+      multimeterBluetoothDeviceRef.current = obj.multimeterBluetoothDevice;
+      multimeterDisconnectRef.current = obj.disconnect;
+      setShowDisconnect(true);
+      speak("Connected");
+    });
+  }
+
+  function handleDisconnectClick() {
+    if (multimeterDisconnectRef.current) {
+      console.log("Calling disconnect...");
+      multimeterDisconnectRef.current();
+
+      resetStatusAfterDisconnect();
+    } else {
+      console.log("Disconnect is not set");
+    }
+  }
+
+  useEffect(() => {
+    function _updateAllVoices() {
+      // Get List of Voices
+      const tempAllVoices = window.speechSynthesis.getVoices();
+      const allEnglishVoices = tempAllVoices.filter(({ lang }) =>
+        lang.startsWith("en"),
+      );
+      setAllVoices(allEnglishVoices);
+
+      if (allEnglishVoices.length > 0) {
+        // Initially set the First Voice in the Array.
+        setSelectedVoice(allEnglishVoices[0].name);
+      }
+    }
+
+    _updateAllVoices();
+    window.speechSynthesis.onvoiceschanged = () => {
+      _updateAllVoices();
+    };
+  }, [setSelectedVoice]);
+
+  function handleMuteClick() {
+    setIsMute(true);
+  }
+
+  function handleUnmuteClick() {
+    setIsMute(false);
+  }
+
+  return (
+    <main className="flex min-h-screen flex-col items-center p-12">
+      <div className="flex flex-col items-center mb-12">
        <Image
-          className="relative dark:drop-shadow-[0_0_0.3rem_#ffffff70] dark:invert"
-          src="/next.svg"
-          alt="Next.js Logo"
-          width={180}
-          height={37}
+          src="/dmm-speaker-icon.png"
+          alt="Multimeter speaker Logo"
+          className="dark:invert pb-4"
+          width={150}
+          height={150}
          priority
        />
+        <h1 className="font-mono text-2xl">Multimeter Speaker</h1>
      </div>
-
-      <div className="mb-32 grid text-center lg:mb-0 lg:grid-cols-4 lg:text-left">
-        <a
-          href="https://nextjs.org/docs?utm_source=create-next-app&utm_medium=appdir-template&utm_campaign=create-next-app"
-          className="group rounded-lg border border-transparent px-5 py-4 transition-colors hover:border-gray-300 hover:bg-gray-100 hover:dark:border-neutral-700 hover:dark:bg-neutral-800/30"
-          target="_blank"
-          rel="noopener noreferrer"
+      <div className="mb-4">
+        <p
+          title="Live value"
+          className="mb-8 flex flex-row items-center min-w-[200px] text-lg font-bold"
        >
-          <h2 className={`mb-3 text-2xl font-semibold`}>
-            Docs{' '}
-            <span className="inline-block transition-transform group-hover:translate-x-1 motion-reduce:transform-none">
-              -&gt;
-            </span>
-          </h2>
-          <p className={`m-0 max-w-[30ch] text-sm opacity-50`}>
-            Find in-depth information about Next.js features and API.
-          </p>
-        </a>
-
-        <a
-          href="https://nextjs.org/learn?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
-          className="group rounded-lg border border-transparent px-5 py-4 transition-colors hover:border-gray-300 hover:bg-gray-100 hover:dark:border-neutral-700 hover:dark:bg-neutral-800/30"
-          target="_blank"
-          rel="noopener noreferrer"
+          <span className="pr-2">
+            <EyeIcon />
+          </span>
+          <span>{liveValue || "----"}</span>
+        </p>
+        <p
+          title="Announced value (debounced)"
+          className="mb-8 flex flex-row items-center min-w-[200px] text-lg font-bold"
        >
-          <h2 className={`mb-3 text-2xl font-semibold`}>
-            Learn{' '}
-            <span className="inline-block transition-transform group-hover:translate-x-1 motion-reduce:transform-none">
-              -&gt;
-            </span>
-          </h2>
-          <p className={`m-0 max-w-[30ch] text-sm opacity-50`}>
-            Learn about Next.js in an interactive course with&nbsp;quizzes!
-          </p>
-        </a>
-
-        <a
-          href="https://vercel.com/templates?framework=next.js&utm_source=create-next-app&utm_medium=appdir-template&utm_campaign=create-next-app"
-          className="group rounded-lg border border-transparent px-5 py-4 transition-colors hover:border-gray-300 hover:bg-gray-100 hover:dark:border-neutral-700 hover:dark:bg-neutral-800/30"
-          target="_blank"
-          rel="noopener noreferrer"
-        >
-          <h2 className={`mb-3 text-2xl font-semibold`}>
-            Templates{' '}
-            <span className="inline-block transition-transform group-hover:translate-x-1 motion-reduce:transform-none">
-              -&gt;
-            </span>
-          </h2>
-          <p className={`m-0 max-w-[30ch] text-sm opacity-50`}>
-            Explore the Next.js 13 playground.
-          </p>
-        </a>
-
-        <a
-          href="https://vercel.com/new?utm_source=create-next-app&utm_medium=appdir-template&utm_campaign=create-next-app"
-          className="group rounded-lg border border-transparent px-5 py-4 transition-colors hover:border-gray-300 hover:bg-gray-100 hover:dark:border-neutral-700 hover:dark:bg-neutral-800/30"
-          target="_blank"
-          rel="noopener noreferrer"
-        >
-          <h2 className={`mb-3 text-2xl font-semibold`}>
-            Deploy{' '}
-            <span className="inline-block transition-transform group-hover:translate-x-1 motion-reduce:transform-none">
-              -&gt;
-            </span>
-          </h2>
-          <p className={`m-0 max-w-[30ch] text-sm opacity-50`}>
-            Instantly deploy your Next.js site to a shareable URL with Vercel.
-          </p>
-        </a>
+          <span className="pr-2">
+            <MegaphoneIcon />
+          </span>
+          <span>{printedValue || "----"}</span>
+        </p>
+      </div>
+      <div className="mb-8">
+        {showConnect ? (
+          <button
+            className="bg-white text-green-500 py-2 px-3 mx-4 rounded-sm border-green-500 border-2 border-solid"
+            onClick={handleConnectClick}
+          >
+            Connect bluetooth
+          </button>
+        ) : (
+          <button
+            className="bg-white text-red-500 py-2 px-3 mx-4 rounded-sm border-red-500 border-2 border-solid"
+            onClick={handleDisconnectClick}
+          >
+            Disconnect
+          </button>
+        )}
+      </div>
+      <div className="mb-8 flex flex-col sm:flex-row items-center">
+        <label className="mb-2 sm:mb-0 flex flex-col sm:flex-row items-center">
+          <span className="mx-2 mb-2 sm:mb-0">Voice:</span>
+          <select
+            name="voice"
+            className="mx-2 px-1 border-gray-200 border-2 border-solid rounded-sm"
+            value={selectedVoice}
+            onChange={(e) => setSelectedVoice(e.target.value)}
+          >
+            {allVoices?.map(({ name, voiceURI }) => (
+              <option key={voiceURI} value={voiceURI}>
+                {name}
+              </option>
+            ))}
+          </select>
+        </label>
+        {!isMute ? (
+          <button
+            title="Mute audio"
+            className="bg-white text-gray-500 py-1 px-1 mx-4"
+            onClick={handleMuteClick}
+          >
+            <SpeakerOnIcon />
+          </button>
+        ) : (
+          <button
+            title="Unmute audio"
+            className="bg-white text-red-400 py-1 px-1 mx-4"
+            onClick={handleUnmuteClick}
+          >
+            <SpeakerOffIcon />
+          </button>
+        )}
      </div>
    </main>
-  )
+  );
 }