meerstern.github.io/web_serial_ble.html at main · meerstern/meerstern.github.io · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>Web Serial BLE</title>
	<style>
			h1 { font-size:20pt; background-color:#4F4F4F; color:#FFFFFF; font-weight : normal;}
			h2 { font-size:16pt; }
			h3 { font-size:8pt; }
			body { font-size:12pt; color:#444444; }
			footer{ font-size:4pt; }
			tarea{width: 100%;height: 6em;}
	</style>
  </head>
  <body>
	<h1><span>WebシリアルBLEツール<br/>　For BGX / Lyra Series</span></h1>

	<div>
	  <p>Mode</p>
      <input type="radio" id="stream" name="mode" value="stream" checked onchange="modeChange();">
      <label for="stream">Stream</label>
      <input type="radio" id="command" name="mode" value="command" onchange="modeChange();">
      <label for="command">Command</label>
	</div>

	<br/>
	<textarea id="console-text" cols="35" rows="10" disabled></textarea>
	<br/>
	<br/>
	<input id="input-text" type="text" size="33"></input>
	<button id="send-button" type="button" disabled>送信</button>
	<br/>
	<br/>
	<button id="connect-button" type="button" disabled>接続</button>
	<button id="save-button" type="button">保存</button>
	<button id="clear-button" type="button">クリア</button>
	<h3>
		<span>
		本ツールは<a href="https://ssci.to/5794">BLE5モジュール変換基板</a>もしくは
		<a href="https://ssci.to/8649">BLE5モジュール変換基板V2</a>で<br/>
		ブラウザを介してシリアル通信をテストするツールです</span>
	</h3>
	<h3><span>オフラインやローカル環境でも動作可能です</span></h3>
	<h3><span>ブラウザはEdgeもしくはChromeのみ対応しています</span></h3>
	<h3><span>一度に送信できる最大文字数は250文字です</span></h3>
	<h3><span>「GATT Error: Not paired」エラーが発生する場合は事前に<br/>OS側の設定画面でデバイスを追加してください</span></h3>
	<footer>
	<p>Copyright (c) 2023 Crescent All Rights Reserved.</p>
	</footer>

	<script>
	/*	Web Serial BLE Tool For BGX13
	 *	Copyright (c) 2023
	 *  K.Watanabe,Crescent
	 *  Released under the MIT license
	 *  http://opensource.org/licenses/mit-license.php
	 */
	const connectButton = document.getElementById ('connect-button');
	const saveButton = document.getElementById ('save-button');
	const clearButton = document.getElementById ('clear-button');
	const sendButton = document.getElementById ('send-button');
	const consoleText = document.getElementById ('console-text');
	const inputText = document.getElementById ('input-text');

	const service_uuid = "331a36f5-2459-45ea-9d95-6142f0c4b307";
	const rx_uuid = "a9da6040-0823-4995-94ec-9ce41ca28833";//PC->BGX13(Notify OFF)
	const tx_uuid = "a73e9a10-628f-4494-a099-12efaf72258f";//BGX13->PC(Notify ON)
	const mode_uuid = "75a9f022-af03-4e41-b4bc-9de90a47d50b";

	const bgxMode = {
		stream: 1,
		local : 2,
		remote :3
	};

	let mode = bgxMode.stream;
	let device;
	let consoleStr = "";
	let connected = false;
	let closed;
	let mode_characteristic;
	let tx_characteristic;
	let rx_characteristic;


	async function modeChange()
	{
		if(stream.checked==true)
			mode = bgxMode.stream;
		else
			mode = bgxMode.remote;

		if(connected && device && device.gatt.connected)
		{
			const md = new Uint8Array([mode]);
			await mode_characteristic.writeValue(md);
		}
	}

	async function sendString()
	{
		try
		{

			if(connected && device && device.gatt.connected)
			{
				let val_arr = new Uint8Array(inputText.value.length+1)
				for (let i = 0; i < inputText.value.length; i++) {
					let val = inputText.value[i].charCodeAt(0);
					val_arr[i] = val;
				}
				val_arr[inputText.value.length]=0x0d;//return code
				await rx_characteristic.writeValue(val_arr);
				console.log(inputText.value);
				inputText.value = "";
			}
		}
		catch (error)
		{
			console.log(error);
		}
	}


	function notification(event)
	{

		let value = event.target.value;
		let str = "";
		for (let i = 0; i < value.byteLength; i++)
		{
			str += String.fromCharCode(value.getUint8(i));
		}
		consoleStr = consoleStr + str;
		consoleText.value = consoleStr;
		console.log(str);
	}

	function disconnected()
	{
		connectButton.innerText = '接続';
		sendButton.disabled = true;
		connected = false;
	}

	//Save Concole
	saveButton.addEventListener('click', (event) =>
	{
		let doc = document.createElement("a");
		doc.href = 'data:text/csv,' + encodeURIComponent(consoleStr);
		doc.download = "Console.txt";
		doc.click();
	});

	//Clear Console
	clearButton.addEventListener('click', (event) =>
	{
		consoleText.value = "";
		consoleStr = "";
	});

	//Connect BLE Device
	async function connectBLE()
	{

		try
		{
			console.log("Searching Bluetooth Device");
			device = await navigator.bluetooth.requestDevice({
			  filters: [{ services: [service_uuid] }],
			  optionalServices: [service_uuid]
			  //acceptAllDevices: true
			  //optionalServices: ['battery_service'],
			});

			//console.log("Connecting to GATT Server");
			await device.addEventListener('gattserverdisconnected', disconnected);
			const server = await device.gatt.connect();

			//console.log("Getting Primary Service");
			const service = await server.getPrimaryService(service_uuid);

			//console.log("Getting Mode Characteristic");
			mode_characteristic = await service.getCharacteristic(mode_uuid);

			//console.log("Getting RX Characteristic");
			rx_characteristic = await service.getCharacteristic(rx_uuid);

			//console.log("Getting TX Characteristic");
			tx_characteristic = await service.getCharacteristic(tx_uuid);

			//console.log('Enable TX Notification');
			await tx_characteristic.startNotifications();

			//console.log('Notification Started');
			await tx_characteristic.addEventListener('characteristicvaluechanged', notification);

			const md = new Uint8Array([mode]);
			await mode_characteristic.writeValue(md);

			connectButton.innerText = '切断';
			sendButton.disabled = false;
			connected = true;

			//Send Button Event
			sendButton.addEventListener('click', sendString);
			console.log('Connected');
		}
		catch (error)
		{
			console.log(error);
			alert(error);
			if(device && device.gatt.connected)
				device.gatt.disconnect();
			connected = false;
		}
		finally
		{

		}

	}

	if (navigator.bluetooth)
	{
		connectButton.addEventListener('click', async ()=>
		{
			if (device)
			{
				connectButton.innerText = '接続';
				sendButton.disabled = true;
				await closed;
				device = undefined;
				sendButton.removeEventListener('click', sendString);
				rx_characteristic = undefined;
				tx_characteristic = undefined;
			}
			else
			{
				closed = connectBLE();
			}
		});
		connectButton.disabled = false;
	}
	else
	{
		alert('お使いのブラウザはWeb Bluetooth APIに対応していません \nEdgeもしくはchromeを使用してください');
	}
	</script>
  </body>
</html>