bletool/index.html at main · etmedia/bletool · GitHub

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<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="utf-8" />
    <link rel="icon" href="favicon.ico" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <meta name="description" content="BLE蓝牙调试工具" />
    <meta name="theme-color" content="#fafafa" />
    <link rel="apple-touch-icon" href="logo192.png" />
    <link rel="manifest" href="manifest.json" />
    <link rel="stylesheet" href="light.min.css"> <!-- https://watercss.kognise.dev/ -->
    <title>BLE蓝牙调试工具</title>
    <style>
        body {
            display: flex;
            flex-direction: column;
            align-items: center;
            margin: 0;
            padding: 20px;
            font-family: Arial, sans-serif;
            width: 100%;
            height: 100vh;
            box-sizing: border-box;
        }
        .container {
            display: flex;
            flex-direction: column;
            width: 100%;
            height: 100%;
        }
        .input-group {
            display: flex;
            margin-bottom: 10px;
            width: 100%;
        }
        .input-group input {
            flex: 1;
            padding: 10px;
            font-size: 16px;
            box-sizing: border-box;
        }
        .input-group button {
            padding: 10px;
            font-size: 16px;
            box-sizing: border-box;
        }
        .textarea-group {
            display: flex;
            margin-bottom: 10px;
            width: 100%;
        }
        .textarea-group textarea {
            flex: 1;
            padding: 10px;
            font-size: 16px;
            height: 100px;
            box-sizing: border-box;
        }
        .textarea-group button {
            padding: 10px;
            font-size: 16px;
            margin-left: 10px;
            box-sizing: border-box;
        }
        #recvinfo {
            width: 100%;
            height: 150px;
            padding: 10px;
            font-size: 16px;
            margin-top: 10px;
            box-sizing: border-box;
        }
        @media (max-width: 600px) {
            .input-group, .textarea-group {
                flex-direction: column;
            }
            .textarea-group button {
                margin-left: 0;
                margin-top: 10px;
            }
        }
        .misc {
            position: absolute;
            bottom: 0;
            left: 0;
            margin: 10px;
        }
    </style>
</head>

<body>
    <div class="container">
        <div class="input-group">
            <input type="text" id="device-name" placeholder="设备名称" readonly>
            <button id="main-button" onclick="handleButtonClick()">连接</button>
        </div>
        <div class="textarea-group">
            <textarea id="send-text" placeholder="输入要发送的内容">68 17 00 43 45 AA AA AA AA AA AA 00 5B 4F 05 01 05 40 01 02 00 00 6A 17 16</textarea>
            <button id="send-button" onclick="senddata()" disabled>发送</button>
        </div>
        <div style="display: flex; align-items: center; justify-content: space-between;">
            <label for="loginfo">日志信息</label>
            <button onclick="clearLog()">清除</button>
        </div>
        <textarea id="loginfo" readonly style="flex-grow: 1; width: 100%;"></textarea>
        <div class="misc">
            <button id="install-button" hidden>将蓝牙调试工具安装到系统</button>
            <p style="font-size: smaller; color: gray; margin: 0%">
                <span style="font-size: smaller">蓝牙检查：edge://bluetooth-internals/#adapter</span>
              <br />
              <span style="font-size: smaller">copyright (c) 2024 etmedia, licensed under MIT License</span>
            </p>
        </div>
    </div>
    <dialog id="dialog">
        <header>出现错误</header>
        <form method="dialog">
            <p id="dialog-content"></p>
            <menu style="display: flex; justify-content: flex-end;">
                <button onclick="succeeded = false">好</button>
            </menu>
        </form>
    </dialog>
</body>

<script>
    function clearLog() {
        document.getElementById('loginfo').value = '';
    }
    function makePayload() {
        const text = document.getElementById('send-text').value;
        const cleanedText = text.replace(/\s+/g, '');
        const uint8Array = new Uint8Array(cleanedText.length / 2);
        for (let i = 0; i < cleanedText.length; i += 2) {
            uint8Array[i / 2] = parseInt(cleanedText.substr(i, 2), 16);
        }
        return uint8Array;
    }

    function log(message) {
        const logInfo = document.getElementById("loginfo");
        const currentTime = new Date().toLocaleString();
        logInfo.value = `[${currentTime}] ${message}\n` + logInfo.value;
    }

    let bluetoothDevice;
    let Characteristic;
    let CharacteristicRx;
    let isStarted = false;

    function updateUi(stage) {
        const mainButton = document.getElementById("main-button");
        const sendButton = document.getElementById("send-button");
        const deviceName = document.getElementById("device-name");
        const status = document.getElementById("status");
        const recvinfo = document.getElementById("recvinfo");
        switch (stage) {
            case "pending":
                mainButton.innerText = "请稍后";
                mainButton.disabled = true;
                sendButton.disabled = true;
                deviceName.value = "已连接：" + bluetoothDevice.name;
                break;
            case "ok":
                mainButton.innerText = "结束";
                mainButton.disabled = false;
                sendButton.disabled = false;
                break;
            case "standby":
                mainButton.innerText = "开启";
                mainButton.disabled = false;
                sendButton.disabled = false;
                deviceName.value = "未连接";
                break;
        }
    }

    async function handleBluetoothError(error) {
        console.log(error)
        // this is so fucking ugly but i have no choice
        // you would never know how those shitty browsers behave
        if (error.toString().match(/User cancelled/) || error.toString() == "2") return; // "2" is a weird behavior of Bluefy browser on iOS
        const dialogContent = document.getElementById("dialog-content");
        if (!navigator.bluetooth || error.toString().match(/Bluetooth adapter not available/)) {
            dialogContent.innerText = "找不到蓝牙硬件，或浏览器不支持。\n\n限于篇幅，详情请参考源代码仓库内的“疑难解答”。";
        } else if (error.toString().match(/User denied the browser permission/)) {
            dialogContent.innerText = "蓝牙权限遭拒。\n\n请前往手机设置，授予浏览器“位置信息”权限。\n此权限不会用于定位，详情请参考源代码仓库内的“疑难解答”。";
        } else if (error.toString().match(/NetworkError/)) {
            dialogContent.innerText = "连接不稳定，无法与蓝牙设备建立连接。\n请重试。";
        } else {
            dialogContent.innerText = error + "\n\n是什么呢\n\n（这可能是一个Bug，请截图并反馈给开发者。）";
        }
        document.getElementById("dialog").showModal();
        if (bluetoothDevice) await bluetoothDevice.gatt.disconnect();
        isStarted = false;
        updateUi("standby");
    }

    function bufferToHexString(array) {
    // explanation: [0x12, 0x34, 0xAB, 0xCD] => "1234ABCD"
    return Array.from(new Uint8Array(array))
        .map((x) => x.toString(16).padStart(2, "0"))
        .join("")
        .toUpperCase();
    }

    async function handleRxdNotifications(event) {
        const value = event.target.value;
        log("RX:"+bufferToHexString(value.buffer));
    }

    async function senddata() {
        log("TX:"+bufferToHexString(makePayload(bluetoothDevice.name)));
        await Characteristic.writeValue(makePayload(bluetoothDevice.name));
    }

    async function start() {
        try {
            bluetoothDevice = await navigator.bluetooth.requestDevice({
                // filters: [{ namePrefix: "2" }],
                acceptAllDevices: true,//http://localhost:63342/klbc-bluetooth-water-control/manifest.json?_ijt=ji272376ot7avl396u716kucb1
                // optionalServices: [0xFF59] // actually it's better to use 0xF1F0 instead of "generic_access" but it will trigger a bug on Bluefy
                optionalServices: ['6e400001-b5a3-f393-e0a9-e50e24dc4179', window.navigator.userAgent.match(/Bluefy/) ? "generic_access" : 0xFFE0]
            });
            updateUi("pending");
            const server = await bluetoothDevice.gatt.connect();
            const services = await server.getPrimaryServices();
            if(services.length == 0){
                throw new Error('No services found');
                return;
            }
            // 获取蓝牙uuid相关内容
            const service = services[0];
            // console.log(`service`, service.uuid);
            // 获取可以读写字符流的服务
            const Characteristics = await service.getCharacteristics();
            if(Characteristics.length == 0){
                throw new Error('No characteristics found');
                return;
            }
            if(Characteristics.length == 1)
            {
                Characteristic = Characteristics[0];
                CharacteristicRx = Characteristics[0];
            }
            else
            {
                Characteristic = Characteristics[0];
                CharacteristicRx = Characteristics[1];
            }
            await CharacteristicRx.startNotifications();
            CharacteristicRx.addEventListener("characteristicvaluechanged", handleRxdNotifications);
            // // 写入字节(括号中的方法为把字符串转为字符流,传输给蓝牙)
            // await Characteristic.writeValue(makePayload(bluetoothDevice.name));
            isStarted = true;
            updateUi("ok");
        } catch (error) {
            handleBluetoothError(error);
        }
    }

    async function end() {
        try {
            // const endPayload = new Uint8Array([0xFE, 0xFE, 0x09, 0xB3, 0x00, 0x00])
            // await txdCharacteristic.writeValue(endPayload)
            await bluetoothDevice.gatt.disconnect();
            isStarted = false;
            updateUi("standby");
        } catch (error) {
            handleBluetoothError(error);
        }
    }

    function handleButtonClick() {
        isStarted ? end() : start();
    }
</script>

</html>