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https://github.com/balena-io/etcher.git
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The RGBLed module has been moved to a separate repository
Changelog-entry: The RGBLed module has been moved to a separate repository Change-type: patch
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@ -14,131 +14,17 @@
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* limitations under the License.
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* limitations under the License.
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*/
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*/
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import { delay } from 'bluebird';
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import {
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import { promises as fs } from 'fs';
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AnimationFunction,
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blinkWhite,
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breatheGreen,
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Color,
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RGBLed,
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} from 'sys-class-rgb-led';
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import * as settings from './settings';
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import * as settings from './settings';
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import { observe } from './store';
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import { observe } from './store';
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class Led {
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private handle: fs.FileHandle;
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private lastValue?: number;
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constructor(private path: string) {}
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private async open() {
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if (this.handle === undefined) {
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this.handle = await fs.open(this.path, 'w');
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}
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}
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public async setIntensity(intensity: number) {
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if (intensity < 0 || intensity > 1) {
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throw new Error('Led intensity must be between 0 and 1');
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}
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const value = Math.round(intensity * 255);
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if (value !== this.lastValue) {
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await this.open();
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await this.handle.write(value.toString(), 0);
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// On a regular file we would also need to truncate to the written value length but it looks like it's not the case on sysfs files
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this.lastValue = value;
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}
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}
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}
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export type Color = [number, number, number];
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export type AnimationFunction = (t: number) => Color;
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function delay1(duration: number): Promise<void> {
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// delay that accepts Infinity
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if (duration === Infinity) {
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return new Promise(() => {
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// Never resolve
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});
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} else {
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return delay(duration);
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}
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}
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function cancellableDelay(
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duration: number,
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): { promise: Promise<void>; cancel: () => void } {
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let maybeCancel: () => void;
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const cancel = () => {
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if (maybeCancel !== undefined) {
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maybeCancel();
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}
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};
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const cancelPromise: Promise<void> = new Promise(resolve => {
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maybeCancel = resolve;
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});
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const promise = Promise.race([delay1(duration), cancelPromise]);
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return { promise, cancel };
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}
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export class RGBLed {
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private leds: [Led, Led, Led];
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private animation: AnimationFunction;
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private period: number; // in ms
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private wakeUp = () => {
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// noop until this.loop() is called
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};
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constructor(paths: [string, string, string]) {
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this.leds = paths.map(path => new Led(path)) as [Led, Led, Led];
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this.setStaticColor([0, 0, 0]);
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this.loop();
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}
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private setFrequency(frequency: number) {
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if (frequency < 0) {
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throw new Error('frequency must be greater or equal to 0');
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}
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this.period = 1000 / frequency;
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this.wakeUp();
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}
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private async loop() {
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while (true) {
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const start = new Date().getTime();
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await this.setColor(this.animation(start));
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const end = new Date().getTime();
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const duration = end - start;
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const { promise, cancel } = cancellableDelay(this.period - duration);
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this.wakeUp = cancel;
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await promise;
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}
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}
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public setAnimation(animation: AnimationFunction, frequency = 10) {
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this.animation = animation;
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this.setFrequency(frequency);
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}
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public setStaticColor(color: Color) {
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this.setAnimation(() => color, 0);
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}
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private async setColor(color: Color) {
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await Promise.all([
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this.leds[0].setIntensity(color[0]),
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this.leds[1].setIntensity(color[1]),
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this.leds[2].setIntensity(color[2]),
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]);
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}
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}
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// Animations:
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function breatheGreen(t: number): Color {
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const intensity = (1 + Math.sin(t / 1000)) / 2;
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return [0, intensity, 0];
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}
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function blinkWhite(t: number): Color {
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const intensity = Math.floor(t / 1000) % 2;
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return [intensity, intensity, intensity];
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}
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const leds: Map<string, RGBLed> = new Map();
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const leds: Map<string, RGBLed> = new Map();
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function setLeds(
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function setLeds(
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@ -184,16 +70,16 @@ export function init() {
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// ledsMapping is something like:
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// ledsMapping is something like:
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// {
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// {
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// 'platform-xhci-hcd.0.auto-usb-0:1.1.1:1.0-scsi-0:0:0:0': [
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// 'platform-xhci-hcd.0.auto-usb-0:1.1.1:1.0-scsi-0:0:0:0': [
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// '/sys/class/leds/led1_r',
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// 'led1_r',
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// '/sys/class/leds/led1_g',
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// 'led1_g',
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// '/sys/class/leds/led1_b',
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// 'led1_b',
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// ],
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// ],
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// ...
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// ...
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// }
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// }
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const ledsMapping: _.Dictionary<[string, string, string]> =
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const ledsMapping: _.Dictionary<[string, string, string]> =
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settings.get('ledsMapping') || {};
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settings.get('ledsMapping') || {};
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for (const [drivePath, ledsPaths] of Object.entries(ledsMapping)) {
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for (const [drivePath, ledsNames] of Object.entries(ledsMapping)) {
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leds.set('/dev/disk/by-path/' + drivePath, new RGBLed(ledsPaths));
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leds.set('/dev/disk/by-path/' + drivePath, new RGBLed(ledsNames));
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}
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}
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observe(state => {
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observe(state => {
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const availableDrives = state
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const availableDrives = state
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7
npm-shrinkwrap.json
generated
7
npm-shrinkwrap.json
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"resolved": "https://registry.npmjs.org/symbol-observable/-/symbol-observable-1.2.0.tgz",
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"resolved": "https://registry.npmjs.org/symbol-observable/-/symbol-observable-1.2.0.tgz",
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"integrity": "sha512-e900nM8RRtGhlV36KGEU9k65K3mPb1WV70OdjfxlG2EAuM1noi/E/BaW/uMhL7bPEssK8QV57vN3esixjUvcXQ=="
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"integrity": "sha512-e900nM8RRtGhlV36KGEU9k65K3mPb1WV70OdjfxlG2EAuM1noi/E/BaW/uMhL7bPEssK8QV57vN3esixjUvcXQ=="
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},
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},
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"sys-class-rgb-led": {
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"version": "2.1.0",
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"resolved": "https://registry.npmjs.org/sys-class-rgb-led/-/sys-class-rgb-led-2.1.0.tgz",
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"integrity": "sha512-ckjrMCWWwg1J4d+B3xlTPLhgK6U/2qpW1TYzCLBSULKoLk2tFchis7nDEOmcbiLfpR/8GQK1Q2CrDNleF0USHA=="
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},
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"tapable": {
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"tapable": {
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"version": "1.1.3",
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"version": "1.1.3",
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"resolved": "https://registry.npmjs.org/tapable/-/tapable-1.1.3.tgz",
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"resolved": "https://registry.npmjs.org/tapable/-/tapable-1.1.3.tgz",
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@ -14457,4 +14462,4 @@
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}
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}
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}
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}
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}
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}
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}
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}
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"styled-components": "^4.2.0",
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"styled-components": "^4.2.0",
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"styled-system": "^4.1.0",
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"styled-system": "^4.1.0",
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"sudo-prompt": "^9.0.0",
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"sudo-prompt": "^9.0.0",
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"sys-class-rgb-led": "^2.1.0",
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"tmp": "^0.1.0",
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"tmp": "^0.1.0",
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"uuid": "^3.0.1"
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"uuid": "^3.0.1"
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},
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},
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