在 NestJS 中添加串口和 USB？

Question

NestJS可以加串口和USB包吗？我似乎找不到任何关于这些的东西。

Answer 1

在您的 serial.module.ts 中，通过自定义工厂提供商创建您的自定义串行处理程序服务

import { SerialHandlerService } from './serial-handler.service';
@Module({
  providers: [
    {
      provide: 'SerialHandlerService',
      useFactory: SerialHandlerService,
    },
  ],
})
    export class SerialModule {}

在同一文件夹中创建序列号-handler.service.ts

import * as SerialPort from 'serialport';
const Readline = SerialPort.parsers.Readline;

export const SerialHandlerService = () => {
  const port = new SerialPort(
    {YOUR_SERIAL_PORT},
    {
      baudRate: {YOUR_SERIAL_BOADRATE},
      dataBits: {YOUR_SERIAL_DATABITS},
      stopBits: {YOUR_SERIAL_STOPBITS},
      parity: {YOUR_SERIAL_PARITY},
    },
    (err) => {
      if (err) {
        console.error(err)
        // Handle Error
      }
      console.log('success')
    },
  );
  // I'm using Readline parser here. But, You can change parser that you want!
  const parser = new Readline({ delimiter: '\r\n' });
  port.pipe(parser);

  port.on('open', () => {
    console.info('port opened');
  });

  parser.on('data', (data) => {
    console.log(data);
    // Data is string, process your data below!
  }
}

将您的 serial.module.ts 添加到您的 app.module.ts

@Module({
  imports: [
    // your other modules...
    SerialModule,
  ],
  controllers: [],
  providers: [],
})
export class AppModule {}

[参考：https://docs.nestjs.com/fundamentals/custom-providers#factory-providers-usefactory]

在 NestJS 中添加串口和 USB？

Adding serialport and usb in NestJS?

usb

serial-port

package

npm

nestjs