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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| import Pn532 from '../src/Pn532.js' | ||
| import Pn532SerialPortAdapter from '../src/plugin/SerialPortAdapter.js' | ||
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| async function main () { | ||
| const pn532 = new Pn532() | ||
| const path = process.env.SERIAL_PATH | ||
| if (!path) throw new Error('env.SERIAL_PATH is not defined') | ||
| console.log(`path = ${path}`) | ||
| pn532.use(new Pn532SerialPortAdapter(), { path }) | ||
| console.log(JSON.stringify(await pn532.getFirmwareVersion())) | ||
| process.exit(0) | ||
| } | ||
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| // run serialport-list to list port, see https://serialport.io/docs/bin-list | ||
| // SERIAL_PATH='/dev/tty.usbserial-120' node examples/serialport.js | ||
| main().catch(console.error) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,108 @@ | ||
| import _ from 'lodash' | ||
| import { Duplex } from 'stream' | ||
| import { SerialPort } from 'serialport' | ||
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| /** | ||
| * @module pn532.js/plugin/SerialPortAdapter | ||
| * @example | ||
| * import Pn532SerialPortAdapter from 'pn532.js/plugin/SerialPortAdapter' | ||
| * | ||
| * // Run serialport-list to list port, see https://serialport.io/docs/bin-list | ||
| * pn532.use(new Pn532SerialPortAdapter(), { path: '/dev/tty.usbserial-120' }) | ||
| */ | ||
| export default class Pn532SerialPortAdapter { | ||
| name = 'adapter' | ||
| port = null | ||
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| install (context, pluginOption = {}) { | ||
| const { pn532, utils } = context | ||
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| if (pn532.$adapter) throw new Error('adapter already exists') | ||
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| const me = this | ||
| pluginOption = { | ||
| baudRate: 115200, | ||
| ...pluginOption, | ||
| } | ||
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| /** | ||
| * Determines whether SerialPort is supported. | ||
| * @memberof Pn532WebserialAdapter | ||
| * @instance | ||
| * @async | ||
| * @returns {Promise<boolean>} Resolve with a boolean indicating whether or not SerialPort is supported. | ||
| */ | ||
| async function isSupported () { | ||
| return !_.isNil(SerialPort) | ||
| } | ||
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| /** | ||
| * Determines whether the connection of adapter is open. | ||
| * @memberof Pn532WebserialAdapter | ||
| * @instance | ||
| * @async | ||
| * @returns {boolean} A boolean indicating whether or not the connection of adapter is open. | ||
| */ | ||
| function isOpen () { | ||
| return Boolean(me?.port?.isOpen) | ||
| } | ||
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| /** | ||
| * Disconnect the connection of adapter. | ||
| * @memberof Pn532WebserialAdapter | ||
| * @instance | ||
| * @async | ||
| * @returns {Promise<null>} Resolve after finished. | ||
| */ | ||
| async function disconnect () { | ||
| if (_.isNil(me.port)) return | ||
| await new Promise((resolve, reject) => { me.port.close(err => err ? reject(err) : resolve()) }) | ||
| } | ||
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| async function disconnected () { | ||
| if (me.port) me.port = null | ||
| utils.logTime('device disconnected') | ||
| } | ||
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| /** | ||
| * Open the connection of adapter. | ||
| * @memberof Pn532WebserialAdapter | ||
| * @instance | ||
| * @async | ||
| * @returns {Promise<null>} Resolve after finished. | ||
| */ | ||
| async function connect () { | ||
| try { | ||
| if (!await isSupported()) throw new Error('SerialPort not supported') | ||
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| // open port | ||
| me.port = await new Promise((resolve, reject) => { | ||
| const port = new SerialPort(pluginOption, err => err ? reject(err) : resolve(port)) | ||
| }) | ||
| utils.logTime(`port connected, path = ${pluginOption.path}, baudRate = ${pluginOption.baudRate}`) | ||
| const portWeb = Duplex.toWeb(me.port) | ||
| pn532.tx = portWeb | ||
| me.port.once('close', disconnected) | ||
| portWeb.readable.pipeTo(pn532.rx.writable) | ||
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| await pn532.sendCommandWakeup() | ||
| await pn532.resetSettings() | ||
| } catch (err) { | ||
| disconnected() | ||
| throw err | ||
| } | ||
| } | ||
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| pn532.addMiddleware('writePacket', async (ctx, next) => { | ||
| if (!isOpen()) await connect() | ||
| return await next() | ||
| }) | ||
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| return { | ||
| connect, | ||
| disconnect, | ||
| isOpen, | ||
| isSupported, | ||
| } | ||
| } | ||
| } |
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