2025-04-21 07:41:22 +02:00
7 changed files with 2362 additions and 687 deletions
--- a/.gitignore
+++ b/.gitignore
@ -1,4 +1,3 @@
 node_modules/
 dist/
 .idea/
-/test.mjs
--- a/.nvmrc
+++ b/.nvmrc
@ -1 +1 @@
-18
+10
--- a/README.md
+++ b/README.md
@ -1,6 +1,6 @@
 # node-enttec-open-dmx-usb 🔌
 > A Node.js library for interacting with the
-> [Enttec Open DMX USB interface](https://www.enttec.co.uk/en/product/controls/dmx-usb-interfaces/open-dmx-usb/)
+> [Enttec Open DMX USB Interface](https://www.enttec.co.uk/en/product/controls/dmx-usb-interfaces/open-dmx-usb/)

 As it uses `serialport` under the hood, it should also work in
 [these environments](https://serialport.io/docs/guide-platform-support#supported-platforms-and-architectures).
@ -8,7 +8,7 @@ As it uses `serialport` under the hood, it should also work in
 ## Install
 ![npm](https://img.shields.io/npm/v/enttec-open-dmx-usb?style=flat-square)

-The minimum required Node.js version is `v18.0.0`.
+Minimum required Node.js version is `v14.0.0`.

 ```sh
 yarn add enttec-open-dmx-usb
@ -20,7 +20,7 @@ npm install enttec-open-dmx-usb
 [**View documentation on jsdocs.io**](https://www.jsdocs.io/package/enttec-open-dmx-usb#EnttecOpenDMXUSBDevice)

 ```js
-import { EnttecOpenDMXUSBDevice as DMXDevice } from "enttec-open-dmx-usb"
+import { EnttecOpenDMXUSBDevice as DMXDevice } from "enttec-open-dmx-usb";

 (async () => {
  const device = new DMXDevice(await DMXDevice.getFirstAvailableDevice())
@ -38,31 +38,7 @@ import { EnttecOpenDMXUSBDevice as DMXDevice } from "enttec-open-dmx-usb"
 })()
 ```

-### What to do when this doesn’t work
-
-TLDR: Because `setTimeout` is imprecise, install [`easy-sleep`](https://github.com/qufei1993/easy-sleep) and
-pass the `usleep` function provided by it as the third parameter to the constructor of `EnttecOpenDMXUSBDevice`.
-See the example below.
-
-From [the Node.js documentation](https://nodejs.org/api/timers.html#settimeoutcallback-delay-args) regarding `setTimeout`:
-> Node.js makes no guarantees about the exact timing of when callbacks will fire, nor of their ordering.
-> The callback will be called as close as possible to the time specified.
-
-Because of this and the passive nature of the Enttec Open DMX USB interface, sometimes the timing requirements of the DMX specification are not met.
-Using a library such as [`easy-sleep`](https://github.com/qufei1993/easy-sleep) which allows sleeping (i. e. blocking the event loop) for a precise
-amount of microseconds is a possible workaround.
-
-You may pass a function sleeping for `n` *micro*seconds as the third parameter to the constructor of `EnttecOpenDMXUSBDevice`.
-
-For example, using `easy-sleep`:
-```js
-import { EnttecOpenDMXUSBDevice as DMXDevice } from "enttec-open-dmx-usb"
-import easySleep from "easy-sleep"
-
-new DMXDevice(await DMXDevice.getFirstAvailableDevice(), true, easySleep.Thread.usleep)
-```
-
 ## Events
-`ready` - `startSending` may be called.
+`ready` - `startSending` can be called.

 `error` - An error occurred. `error` events from `serialport` are passed through.
--- a/package.json
+++ b/package.json
@ -1,7 +1,7 @@
 {
  "name": "enttec-open-dmx-usb",
-  "version": "4.0.1",
-  "description": "A Node.js library for interacting with the Enttec Open DMX USB interface",
+  "version": "3.0.1",
+  "description": "A Node.js library for interacting with the Enttec Open DMX USB Interface",
  "repository": "https://github.com/moritzruth/node-enttec-open-dmx-usb.git",
  "author": "Moritz Ruth <dev@moritzruth.de>",
  "license": "MIT",
@ -13,21 +13,25 @@
    "usb"
  ],
  "scripts": {
-    "build": "tsc"
+    "build": "tsc",
+    "lint": "eslint src"
  },
  "files": [
    "dist"
  ],
  "engines": {
-    "node": ">=18.0.0"
+    "node": ">=14.0.0"
  },
  "devDependencies": {
-    "@types/node": "^18.16.10",
-    "@types/serialport": "^8.0.2",
-    "typescript": "^5.0.4"
+    "@types/node": "^14.14.31",
+    "@types/serialport": "^8.0.1",
+    "eslint": "^7.20.0",
+    "eslint-config-awzzm-node": "^1.5.0",
+    "eslint-config-awzzm-ts": "^1.5.2",
+    "typescript": "~4.1.5"
  },
  "dependencies": {
-    "eventemitter3": "^5.0.1",
-    "serialport": "^11.0.0"
+    "eventemitter3": "^4.0.7",
+    "serialport": "^9.0.7"
  }
 }
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@ -1,613 +0,0 @@
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--- a/src/index.ts
+++ b/src/index.ts
@ -1,5 +1,5 @@
 import { EventEmitter } from "eventemitter3"
-import { SerialPort } from "serialport"
+import SerialPort from "serialport"

 export const VENDOR_ID = "0403" // Enttec
 export const PRODUCT_ID = "6001" // Open DMX USB
@ -9,26 +9,21 @@ interface Events {
  error: [Error]
 }

-type Usleep = (microSeconds: number) => unknown
-
 export class EnttecOpenDMXUSBDevice extends EventEmitter<Events> {
  private shouldBeSending = false
  private sendTimeout: ReturnType<typeof setTimeout> | null = null
  private buffer = Buffer.alloc(513)
  private readonly port: SerialPort
-  private readonly usleep: Usleep | null

  /**
-   * @param path A path returned by {@link EnttecOpenDMXUSBDevice.listDevices} or
+   * @param {string} path A path returned by {@link EnttecOpenDMXUSBDevice.listDevices} or
   * {@link EnttecOpenDMXUSBDevice.getFirstAvailableDevice}.
-   * @param [startSending=true] Whether the device should start sending as soon as it is ready.
-   * @param [usleep=null] A function blocking the event loop for `n` microseconds. See the README.md for more information.
+   * @param {boolean} [startSending=true] Whether the device should start sending as soon as it is ready.
   */
-  constructor(path: string, startSending = true, usleep: Usleep | null = null) {
+  constructor(path: string, startSending = true) {
    super()

-    this.port = new SerialPort({
-      path,
+    this.port = new SerialPort(path, {
      baudRate: 250000,
      dataBits: 8,
      stopBits: 2,
@ -45,14 +40,12 @@ export class EnttecOpenDMXUSBDevice extends EventEmitter<Events> {
    this.port.on("error", (error: Error) => {
      this.emit("error", error)
    })
-
-    this.usleep = usleep
  }

  /**
   * Start sending.
-   * @param [interval=0] The milliseconds between each attempt to send. Most of the time `0` works fine.
-   * @throws When the device is not ready yet.
+   * @param {number} [interval=0] The time between each attempt to send. Most of the time, `0` works.
+   * @throws Error When the device is not ready yet.
   */
  startSending(interval = 0) {
    if (!this.port.isOpen) throw new Error("The device is not ready yet. Wait for the 'ready' event.")
@ -61,7 +54,7 @@ export class EnttecOpenDMXUSBDevice extends EventEmitter<Events> {

    // eslint-disable-next-line unicorn/consistent-function-scoping
    const send = () => {
-      this._sendUniverse()
+      this.sendUniverse()
        .then(() => {
          if (this.shouldBeSending)
            // eslint-disable-next-line @typescript-eslint/no-misused-promises
@ -83,11 +76,11 @@ export class EnttecOpenDMXUSBDevice extends EventEmitter<Events> {
  }

  /**
-   * Set channel values.
+   * Set the channel values.
   * If channels is an Object, the keys are the channel numbers.
   *
-   * @param channels
-   * @param [clear=false] Whether all previously assigned channels should be set to `0`
+   * @param {Buffer|Object|Array} channels
+   * @param {boolean} [clear=false] Whether all previously assigned channels should be set to 0
   */
  setChannels(channels: Buffer | number[] | Record<number, number>, clear = false) {
    if (clear) {
@ -126,34 +119,26 @@ export class EnttecOpenDMXUSBDevice extends EventEmitter<Events> {
  }

  /**
-   * @returns A Promise resolved when the whole universe was sent.
+   * @returns {Promise} Resolves when the whole universe was sent.
   * @private
   */
-  async _sendUniverse(): Promise<void> {
+  private async sendUniverse(): Promise<void> {
    return new Promise(resolve => {
      this.port.set({ brk: true, rts: false }, () => {
-        if (this.usleep === null) {
-          setTimeout(() => {
-            this.port.set({ brk: false, rts: false }, () => {
-              setTimeout(() => {
-                this.port.write(this.buffer, () => resolve())
-              }, 1)
-            })
-          }, 1)
-        } else {
-          this.usleep(92)
-
+        setTimeout(() => {
          this.port.set({ brk: false, rts: false }, () => {
-            this.usleep!(12)
-            this.port.write(this.buffer, () => resolve())
+            setTimeout(() => {
+              this.port.write(this.buffer, () => resolve())
+            }, 0)
          })
-        }
+        }, 0)
      })
    })
  }

  /**
   * Get the paths of all available devices.
+   * @returns {Promise<string[]>}
   */
  static async listDevices(): Promise<string[]> {
    const allPorts = await SerialPort.list()
@ -164,7 +149,8 @@ export class EnttecOpenDMXUSBDevice extends EventEmitter<Events> {

  /**
   * Get the path of the first available device.
-   * @throws When no device is found.
+   * @throws Error When no device is found.
+   * @returns {Promise<string>}
   */
  static async getFirstAvailableDevice(): Promise<string> {
    const devices = await EnttecOpenDMXUSBDevice.listDevices()
--- a/yarn.lock
+++ b/yarn.lock