meerstern.github.io/I2C Read_Write_En.html at main · meerstern/meerstern.github.io · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
<!DOCTYPE html>
<!-- saved from url=(0057)https://meerstern.github.io/web_serial_I2C_ReadWrite.html -->
<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

    <title>I2C Read/Write</title>
	<style>
			h1 { font-size:20pt; background-color:#4F4F4F; color:#FFFFFF; font-weight : normal;}
			h2 { font-size:12pt; }
			h3 { font-size:8pt; }
			body { font-size:12pt; color:#444444; }
			fieldset { font-size:12pt; line-height:0.1em; padding:  20px;}
			footer{ font-size:4pt; }
	</style>
  </head>
  <body>
	<h1><span>I2C Read/Write Test Tool</span></h1>
	<button id="connect-button" type="button">Connect</button>
	<br>
	<br>
	<fieldset>
	<legend>Settings</legend>
	<div>
	  <p>Device Address</p>
	  <input type="text" id="devAddr" name="devAddr" placeholder="ex) 0x64 or 100"><p></p>
	</div>
	<div>
	  <p>Device Address Type</p>
      <input type="radio" id="bit8" name="bitLen" value="bit8" checked="" onchange="bitChange();">
      <label for="bit8">8bit</label>
      <input type="radio" id="bit7" name="bitLen" value="bit7" onchange="bitChange();">
      <label for="bit7">7bit</label>
	</div>
	</fieldset>
	<br>
	<fieldset>
	<legend>Write</legend>
	<div>
	  <p>Register</p>
	  <input type="text" id="writeReg" name="writeReg" placeholder="ex) 0x31 or 49"><p></p>
	</div>
	<div>
	  <p>Write Data</p>
	  <input type="text" id="writeData" name="writeData" placeholder="ex) 0x20,0x21・・・"><p></p>
	</div>
	<button id="write-button" type="button" disabled="">Write</button>
	</fieldset>
	<br>
	<fieldset>
	<legend>Read</legend>
	<div>
	  <p>Register</p>
	  <input type="text" id="readReg" name="readReg" placeholder="ex) 0x31 or 49"><p></p>
	</div>
	<div>
	  <p>Read Data Size</p>
	  <input type="text" id="readLen" name="readLen" placeholder="ex) 0x10 or 16"><p></p>
	</div>
	<h2><span id="res_string">Read Data Value</span></h2>
	<button id="read-button" type="button" disabled="">Read</button>
	<button id="clear-button" type="button">Clear</button>
	</fieldset>

	<h3>
		<span>
		This web site is to test I2C devices using <a href="https://github.com/meerstern/USBSerial_I2C_Converter">a USB Serial I2C Conversion Board </a>and a browser.</span>
	</h3>
	<h3><span>This page can operate offline or locally.</span></h3>
	<h3><span>Only Edge or Chrome browsers are supported.</span></h3>
	<footer>
	<p>Copyright (c) 2024 Crescent All Rights Reserved.</p>
	</footer>

	<script>
	/*	I2C Read Write Tool
	 *	Copyright (c) 2022
	 *  K.Watanabe,Crescent
	 *  Released under the MIT license
	 *  http://opensource.org/licenses/mit-license.php
	 */
	const connectButton = document.getElementById ('connect-button');
	const readButton = document.getElementById ('read-button');
	const writeButton = document.getElementById ('write-button');
	const clearButton = document.getElementById ('clear-button');
	const bit8 = document.getElementById("bit8");
	const devAddr = document.getElementById("devAddr");
	const wReg = document.getElementById("writeReg");
	const wData = document.getElementById("writeData");
	const rReg = document.getElementById("readReg");
	const rLen = document.getElementById("readLen");
	const rRes = document.getElementById("res_string");

	let port;
	let keepReading = true;
	let reader;
	let dataIndex = 0;
	let str = "";
	let closed;
	let dataArry = [];
	let Is8bitAddr=true;
	let intDevAddress=0;
	let wdataArry=[];
	let intWReg = 0;
	let intRReg = 0;
	let intRLen = 0;

	//Wait Function
	function Sleep( milli_second )
	{
		var start = new Date();
		while( new Date() - start < milli_second );
	}

	function bitChange()
	{
		if(bit8.checked==true)
			Is8bitAddr=true;
		else
			Is8bitAddr=false;
	}

	function setDeviceAddress()
	{
		if(devAddr.value!="")
		{
			if(devAddr.value[1]=="x")
				intDevAddress = parseInt(devAddr.value, 16);
			else
				intDevAddress = parseInt(devAddr.value, 10);

			if(Is8bitAddr==false)
				intDevAddress = intDevAddress<<1;
			else
				intDevAddress = intDevAddress&0xFE;
		}
		//console.log(intDevAddress);
	}

	function setWriteReg()
	{
		if(wReg.value!="")
		{
			if(wReg.value[1]=="x")
				intWReg=parseInt(wReg.value, 16);
			else
				intWReg=parseInt(wReg.value, 10);
		}
		//console.log(intWReg);
	}

	function setWriteData()
	{
		if(wData.value!="")
		{
			wdataArry=[];
			const itemData = wData.value.split(',');
			for(var i=0; i<itemData.length; i++)
			{
				if(itemData[i][1]=="x")
					wdataArry.push(parseInt(itemData[i], 16));
				else
					wdataArry.push(parseInt(itemData[i],10));
			}
			//console.log(wdataArry);
		}
	}

	function setReadReg()
	{
		if(rReg.value!="")
		{
			if(rReg.value[1]=="x")
				intRReg=parseInt(rReg.value, 16);
			else
				intRReg=parseInt(rReg.value, 10);
		}
		//console.log(intWReg);
	}

	function setReadLen()
	{
		if(rLen.value!="")
		{
			if(rLen.value[1]=="x")
				intRLen=parseInt(rLen.value, 16);
			else
				intRLen=parseInt(rLen.value, 10);
		}
		//console.log(intWReg);
	}

	//Clear Read Data
	clearButton.addEventListener('click', (event) =>
	{
		document.getElementById("res_string").innerText = "Read Data Value";
	});


	//Com Open & Recieve Data
	async function getReader()
	{
        port = await navigator.serial.requestPort({});
        await port.open({ baudRate: 9600 });

        connectButton.innerText = 'Disconnect';
		writeButton.disabled = false;
		readButton.disabled = false;

        //Write Button
		writeButton.addEventListener('click', (event) =>
		{
          if (port && port.writable)
		  {
            setDeviceAddress();
			setWriteReg();
			setWriteData();

			if(devAddr.value!="" && wReg.value!="" && wData.value!="")
			{
				const bytes1 = new Uint8Array([0x53, intDevAddress, wdataArry.length+1, intWReg]);
				const bytes2 = Uint8Array.from(wdataArry);
				const bytes3 = new Uint8Array([0x50]);
				const writer = port.writable.getWriter();
				writer.write(bytes1);
				Sleep(10);
				writer.write(bytes2);
				Sleep(10);
				writer.write(bytes3);
				writer.releaseLock();
			}
          }
        });

		//Read Button
		readButton.addEventListener('click', (event) =>
		{
          if (port && port.writable)
		  {
			if(devAddr.value!="" && rReg.value!="" && rLen.value!="")
			{
				setDeviceAddress();
				setReadReg();
				setReadLen();

				const bytes1 = new Uint8Array([0x53, intDevAddress, 0x01, intRReg, 0x53, intDevAddress+1, intRLen, 0x50]);
				const writer = port.writable.getWriter();
				dataArry=[];
				dataIndex=0;
				writer.write(bytes1);
				writer.releaseLock();
			}
          }
        });


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

					if (value)
					{
						//console.log(value);
						dataArry[dataIndex] = " 0x"+value[0].toString(16);
						document.getElementById("res_string").innerText = dataArry;
						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 = 'Connect';
				readButton.disabled = true;
				writeButton.disabled = true;
				reader.cancel();
				await closed;
				port = undefined;
			}
			else
			{
				closed = getReader();
			}
		});
		connectButton.disabled = false;
	}
	else
	{
		alert('Your browser is not supported. Please use Edge or Chrome.');
	}
	</script>

</body></html>