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196 lines (180 loc) · 6.54 KB
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// Copyright (c) Microsoft Corporation.
// Licensed under the MIT license.
// Credit: A majority of this code was taken from the Visual Studio Code Arduino extension with some modifications to suit our purposes.
import * as os from "os";
import { OutputChannel } from "vscode";
import { CONSTANTS } from "./constants";
import { logToOutputChannel } from "./extension_utils/utils";
interface ISerialPortDetail {
path: string;
manufacturer: string;
vendorId: string;
productId: string;
}
export class SerialPortControl {
public static get serialport(): any {
if (!SerialPortControl._serialport) {
SerialPortControl._serialport = require("usb-native").SerialPort;
}
return SerialPortControl._serialport;
}
public static list(): Promise<ISerialPortDetail[]> {
return new Promise((resolve, reject) => {
SerialPortControl.serialport.list().then(
ports => resolve(ports),
err => reject(err)
);
});
}
private static _serialport: any;
private _currentPort: string;
private _currentBaudRate: number;
private _currentSerialPort: any;
public constructor(
port: string,
baudRate: number,
private _outputChannel: OutputChannel
) {
this._currentPort = port;
this._currentBaudRate = baudRate;
}
public get isActive(): boolean {
return this._currentSerialPort && this._currentSerialPort.isOpen;
}
public get currentPort(): string {
return this._currentPort;
}
public open(): Promise<any> {
logToOutputChannel(
this._outputChannel,
CONSTANTS.INFO.OPENING_SERIAL_PORT(this._currentPort)
);
return new Promise((resolve, reject) => {
if (this._currentSerialPort && this._currentSerialPort.isOpen) {
this._currentSerialPort.close((err: any) => {
if (err) {
return reject(err);
}
this._currentSerialPort = null;
return this.open().then(
() => {
resolve();
},
error => {
reject(error);
}
);
});
} else {
this._currentSerialPort = new SerialPortControl.serialport(
this._currentPort,
{ baudRate: this._currentBaudRate }
);
this._outputChannel.show();
this._currentSerialPort.on("open", () => {
this._currentSerialPort.write(
CONSTANTS.MISC.SERIAL_MONITOR_TEST_IF_OPEN + os.EOL,
(err: any) => {
if (
err &&
!(
err.message.indexOf(
CONSTANTS.ERROR.COMPORT_UNKNOWN_ERROR
) >= 0
)
) {
logToOutputChannel(
this._outputChannel,
CONSTANTS.ERROR.FAILED_TO_OPEN_SERIAL_PORT(
this._currentPort
)
);
logToOutputChannel(
this._outputChannel,
CONSTANTS.ERROR.RECONNECT_DEVICE
);
reject(err);
} else {
logToOutputChannel(
this._outputChannel,
CONSTANTS.INFO.OPENED_SERIAL_PORT(
this._currentPort
)
);
resolve();
}
}
);
});
}
this._currentSerialPort.on("data", (event: any) => {
logToOutputChannel(this._outputChannel, event.toString());
});
this._currentSerialPort.on("error", (error: any) => {
logToOutputChannel(this._outputChannel, error.toString());
});
});
}
public changePort(newPort: string): Promise<any> {
return new Promise((resolve, reject) => {
if (newPort === this._currentPort) {
resolve();
return;
}
this._currentPort = newPort;
if (!this._currentSerialPort || !this.isActive) {
resolve();
return;
}
this._currentSerialPort.close((error: any) => {
if (error) {
reject(error);
} else {
this._currentSerialPort = null;
resolve();
}
});
});
}
public stop(): Promise<any> {
return new Promise((resolve, reject) => {
if (!this._currentSerialPort || !this.isActive) {
resolve(false);
return;
}
this._currentSerialPort.close((error: any) => {
if (this._outputChannel) {
logToOutputChannel(
this._outputChannel,
CONSTANTS.INFO.CLOSED_SERIAL_PORT(this._currentPort)
);
}
this._currentSerialPort = null;
if (error) {
reject(error);
} else {
resolve(true);
}
});
});
}
public changeBaudRate(newBaudRate: number): Promise<any> {
return new Promise((resolve, reject) => {
this._currentBaudRate = newBaudRate;
if (!this._currentSerialPort || !this.isActive) {
resolve();
return;
}
this._currentSerialPort.update(
{ baudRate: this._currentBaudRate },
(error: any) => {
if (error) {
reject(error);
} else {
resolve();
}
}
);
});
}
}