bubble/avr128da48_web-serial-example
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refactor

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Sergey Yarkov 2022-09-21 00:05:34 +03:00
parent 6e5e770bd8
commit 1f631cecd0
1 changed files with 68 additions and 64 deletions
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132
web/app.js
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@ -1,69 +1,9 @@
/**
* If this character is included in the received data chunk,
* it means that transfer completed.
*/
var EOT = '\u0004'; var EOT = '\u0004';
class SerialPortHandler {
constructor(options, onConnect, onDisconnect) {
this.encoder = new TextEncoder();
this.decoder = new TextDecoder();
this.onConnect = onConnect;
this.onDisconnect = onDisconnect;
this.options = options;
this.port = null;
this.isOpened = false;
this.#setupListeners();
}
async open() {
try {
const port = await navigator.serial.requestPort();
await port.open(this.options);
this.port = port;
this.isOpened = true;
return this.port.getInfo();
} catch (error) {
console.error(error);
throw error;
}
}
async close() {
await this.port.close();
this.isOpened = false;
}
async write(data) {
const writer = this.port.writable.getWriter();
const encoded = this.encoder.encode(data);
await writer.write(encoded);
writer.releaseLock();
}
async read() {
const reader = this.port.readable.getReader();
let chunks = '';
while (true) {
const { value, done } = await reader.read();
const decoded = this.decoder.decode(value);
chunks += decoded;
if (done || decoded.includes('\u0004')) {
console.log('Reading done.');
reader.releaseLock();
break;
}
}
return chunks;
}
#setupListeners() {
navigator.serial.addEventListener('connect', this.onConnect);
navigator.serial.addEventListener('disconnect', this.onDisconnected);
}
}
class Application { class Application {
constructor(root) { constructor(root) {
if (!('serial' in navigator)) { if (!('serial' in navigator)) {
@ -148,4 +88,68 @@ class Application {
} }
} }
class SerialPortHandler {
constructor(options, onConnect, onDisconnect) {
this.encoder = new TextEncoder();
this.decoder = new TextDecoder();
this.onConnect = onConnect;
this.onDisconnect = onDisconnect;
this.options = options;
this.port = null;
this.isOpened = false;
this.#setupListeners();
}
async open() {
try {
const port = await navigator.serial.requestPort();
await port.open(this.options);
this.port = port;
this.isOpened = true;
return this.port.getInfo();
} catch (error) {
console.error(error);
throw error;
}
}
async close() {
await this.port.close();
this.isOpened = false;
}
async write(data) {
const writer = this.port.writable.getWriter();
const encoded = this.encoder.encode(data);
await writer.write(encoded);
writer.releaseLock();
}
async read() {
const reader = this.port.readable.getReader();
let chunks = '';
while (true) {
const { value, done } = await reader.read();
const decoded = this.decoder.decode(value);
chunks += decoded;
if (done || decoded.includes('\u0004')) {
console.log('Reading done.');
reader.releaseLock();
break;
}
}
return chunks;
}
#setupListeners() {
navigator.serial.addEventListener('connect', this.onConnect);
navigator.serial.addEventListener('disconnect', this.onDisconnected);
}
}
new Application(document.getElementById('app')); new Application(document.getElementById('app'));