react-native-serial-port-api
Only for android platform based on Android-SerialPort-API.
Getting started
$ npm install react-native-serial-port-api --save
(Optional) React Native < 0.60
Run this command if use React Native before version 0.60.
$ npx react-native link react-native-serial-port-api
Autolinking will works for 0.60 or above.
Usage
import SerialPortAPI from 'react-native-serial-port-api';
async function example() {
  const serialPort = await SerialPortAPI.open("/dev/ttyS4", { baudRate: 38400 });
  // subscribe received data
  const sub = serialPort.onReceived(buff => {
    console.log(buff.toString('hex').toUpperCase());
  })
  // unsubscribe
  // sub.remove();
  // send data with hex format
  await serialPort.send('00FF');
  // close
  serialPort.close();
}
See documentation for details.
Development
Generate API docs.
npm install -g jsdoc
jsdoc src -r -R README.md -t node_modules/docdash -d ./docs/