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

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<!DOCTYPE html>
<html lang="en">
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.9.1/chart.min.js"></script>
  <head>
    <meta charset="UTF-8" />
    <title>Web Serial Plotter</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; }
	</style>
  </head>
  <body>
	<h1><span>Webシリアル2次元プロットツール </span></h1>
	<style>
	#t_chart {max-width:600px;max-height:600px;}
	</style>
	<canvas id="t_chart"></canvas>


	<div>
	  <p>ボーレート</p>
      <input type="radio" id="b9600" name="baud" value="b9600" checked onchange="BaudChange();">
      <label for="b9600">9600</label>
      <input type="radio" id="b19200" name="baud" value="b19200" onchange="BaudChange();">
      <label for="b19200">19200</label>
	  <input type="radio" id="b38400" name="baud" value="b38400" onchange="BaudChange();">
      <label for="b38400">38400</label>
      <input type="radio" id="b57600" name="baud" value="b57600" onchange="BaudChange();">
      <label for="b57600">57600</label>
	  <input type="radio" id="b115200" name="baud" value="b115200" onchange="BaudChange();">
      <label for="b115200">115200</label>
	</div>

	<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>
			一般的なシリアル通信のカンマ区切りデータを2次元で可視化するツールです</br>
			磁気センサや加速度センサ等の3次元センサのキャリブレーションに最適です</br>
			対応フォーマット:　XXX,XXX,XXX\r\n
		</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>
	<footer>
	<p>Copyright (c) 2025 Crescent All Rights Reserved.</p>
	</footer>

	<script>
	/*	Serial Plotter Tool
	 *	Copyright (c) 2025
	 *  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');
	let tChart = document.getElementById('t_chart');

	let tdata =
		{
			labels: [],
			datasets: [
				{
					label: 'X-Y',
					data: [],
					borderColor: 'rgba(0, 0, 255, 1)'
				},
				{
					label: 'X-Z',
					data: [],
					borderColor: 'rgba(150, 255, 150, 1)'
				}
				,
				{
					label: 'Z-Y',
					data: [],
					borderColor: 'rgba(255, 150, 0, 1)'
				}
			]
		};


	let toptions = {
		scales: {
			x:{title:{display: true, text: 'X,Z'}},
			y:{title:{display: true, text: 'Y,Z'}}
		},
		plugins:{legend:{display: true}}
	};


	let tmpChart = new Chart(tChart, {
		type: 'scatter',
		data: tdata,
		options: toptions
	});


	let port;
	let keepReading = true;
	let reader;
	let dataIndex = 0;
	let str = "";
	let closed;
	let dataArry = [];
	let chartIndex=0;
	let baudrate = 9600;

	//Baudrate Changed Event
	function BaudChange()
	{
		if(b9600.checked==true)
		{
			baudrate = 9600;
		}
		else if(b19200.checked==true)
		{
			baudrate = 19200;
		}
		else if(b38400.checked==true)
		{
			baudrate = 38400;
		}
		else if(b57600.checked==true)
		{
			baudrate = 57600;
		}
		else if(b115200.checked==true)
		{
			baudrate = 115200;
		}
    }

	function isNumber(n)
	{
		return !isNaN(parseFloat(n)) && isFinite(n);
	}

	//Graph Clear
	clearButton.addEventListener('click', (event) =>
	{
		chartIndex=0;
		tdata.labels=[];
		tdata.datasets[0].data=[];
		tdata.datasets[1].data=[];
		tdata.datasets[2].data=[];
		tmpChart.update();

	});

	//Save Data
	saveButton.addEventListener('click', (event) =>
	{
		var strCsv = "time,data1,data2,data3,data4,data5,data6,data7,data8,\n";

		for(var i=0; i<chartIndex; i++)
		{
			strCsv = strCsv + tmpChart.data.labels[i] + ","
							+ tmpChart.data.datasets[0].data[i] + ","
							+ tmpChart.data.datasets[1].data[i] + ","
							+ tmpChart.data.datasets[2].data[i] + ",\n";

		}

		var doc = document.createElement("a");
		doc.href = 'data:text/csv,' + encodeURIComponent(strCsv);
		doc.download = "SerialData.csv";
		doc.click();
	});

	//Com Open & Recieve Data
	async function getReader()
	{
        port = await navigator.serial.requestPort({});
        await port.open({ baudRate: baudrate });

        //Set Init
		if (port && port.writable)
		{
			//Nothing to do for writing data
		}

		connectButton.innerText = '切断';


		while (port.readable && keepReading)
		{
			reader = port.readable.getReader();
			try {
				while (true)
				{
					const { value, done } = await reader.read();
					if (done)
					{
						reader.releaseLock();
						break;
					}

					if (value)
					{
						for(var j=0; j<value.length;j++)
						{
							//console.log(value);
							//console.log(dataIndex);
							if(value[j]==0x0D)// Get Line
							{
								var text_decoder = new TextDecoder("utf-8");
								var strText = text_decoder.decode(Uint8Array.from(dataArry).buffer);
								const itemData = strText.split(',');
								console.log(itemData);

								if(itemData.length==3 && isNumber(itemData[0]))
								{
									tmpChart.data.datasets[0].data[chartIndex] = {x:parseFloat(itemData[0]), y:parseFloat(itemData[1])};
									tmpChart.data.datasets[1].data[chartIndex] = {x:parseFloat(itemData[0]), y:parseFloat(itemData[2])};
									tmpChart.data.datasets[2].data[chartIndex] = {x:parseFloat(itemData[2]), y:parseFloat(itemData[1])};

									tmpChart.update();
									chartIndex=chartIndex+1;
									dataArry=[];
									dataIndex = 0;
									break;
								}


							}
							else if(value[j]==0x0A)
							{
								//Nothing to do
							}
							else
							{
								dataArry[dataIndex] = value[j];
								dataIndex = dataIndex + 1;
							}


						}


					}
				}
			}
			catch (error)
			{
			}
			finally
			{
				reader.releaseLock();
				await port.close();
			}

		}

      }

	if ('serial' in navigator)
	{
		connectButton.addEventListener('click', async ()=>
		{
			if (port)
			{
				keepReading = false;
				connectButton.innerText = '接続';
				reader.cancel();
				await closed;
				port = undefined;
			}
			else
			{
				closed = getReader();
			}
		});
		connectButton.disabled = false;
	}
	else
	{
		alert('お使いのブラウザは対応していません Edgeもしくはchromeを使用してください');
	}
	</script>
  </body>
</html>