XBee和Serialport通信

Question

任何人都有XBee现在如何与serialport交互的更新副本。 meterInterface是传递到serialport

的路径

'use strict';

const Serialport = require('serialport');
const xbee_api = require('xbee-api');

const XBEE_C = xbee_api.constants;

const MeterAPI = require('./MeterAPI');

class XBeeMeter extends MeterAPI {
    constructor(meterInterface) {
        super(meterInterface);

        this.timeout = 5000;
        this.meterInterface = meterInterface;

        this.xbeeAPI = new xbee_api.XBeeAPI({
            api_mode: 2
        });
        this.xbeeAPI.setMaxListeners(0);

        this.isOpen = false;
        this.serialport = new Serialport(
            meterInterface,
            { baudRate: 9600, parser: this.xbeeAPI.rawParser() },
            error => {
                this.isOpen = true;
                console.error(error);
            }
        );

        this.broadcastAddr = '000000000000ffff';

        this.xbeeAPI.parser.on('frame_object', receivedFrame => {
            console.log('Received frame', receivedFrame);
        });

        this.xbeeAPI.on('frame_object', receivedFrame => {
            if (receivedFrame.type === XBEE_C.FRAME_TYPE.ZIGBEE_RECEIVE_PACKET) {
                const amph = receivedFrame.data.readUInt32LE();
                const id = receivedFrame.remote64.toUpperCase();

                console.log('Receiving data', amph, id);
            }
        });
    }

    xbeeCommand(frame, waitForReply = true) {
        return new Promise((resolve, reject) => {
            const callback = function(receivedFrame) {
                if (receivedFrame.id == frame.id) {
                    switch (receivedFrame.deliveryStatus) {
                        case XBEE_C.DELIVERY_STATUS.SUCCESS:
                            if (!waitForReply) {
                                resolve();
                            }
                            break;

                        default:
                            reject(XBEE_C.DELIVERY_STATUS[receivedFrame.deliveryStatus]);
                            break;
                    }
                }

                const dataReceived =
                    receivedFrame.type == XBEE_C.FRAME_TYPE.ZIGBEE_RECEIVE_PACKET &&
                    receivedFrame.remote64.toUpperCase() == frame.destination64.toUpperCase();

                if (dataReceived) {
                    resolve(receivedFrame.data);
                }
            };

            // console.log(this.xbeeAPI.buildFrame(frame).toJSON());

            this.serialport.on('frame_object', () => {
                console.log('Frame object');
            });

            this.xbeeAPI.on('frame_object', callback);
            this.serialport.write(this.xbeeAPI.buildFrame(frame));

            setTimeout(() => {
                this.xbeeAPI.removeListener('frame_object', callback);
                reject(new Error('Timeout error'));
            }, this.timeout);
        });
    }

    xbeeFrame(destination, data) {
        return {
            type: XBEE_C.FRAME_TYPE.ZIGBEE_TRANSMIT_REQUEST,
            id: this.xbeeAPI.nextFrameId(),
            destination64: destination,
            broadcastRadius: 0x00,
            options: 0x00,
            data
        };
    }

    reset(id) {
        console.log(`Resetting ${id} meter`);
        return this.xbeeCommand(this.xbeeFrame(id, [0x30]), false);
    }

    status(id) {
        if (id) {
            return this.xbeeCommand(this.xbeeFrame(id, [0x10]));
        }

        if (!this.isOpen) {
            console.log('Serialport is not open');
            return null;
        }

        console.log(`Getting the statuses of all meters via broadcast: ${this.broadcastAddr}`);
        const reqFrame = this.xbeeFrame(this.broadcastAddr, [0x10]);

        this.serialport.write(this.xbeeAPI.buildFrame(reqFrame));
    }

    enable(id, state) {
        console.log(`changing the state of ${id} to ${state}`);
        const frame = state ? this.xbeeFrame(id, [0x1]) : this.xbeeFrame(id, [0x2]);
        return this.xbeeCommand(frame, false);
    }
}

module.exports = XBeeMeter;

由于某些原因，未调用frame_object侦听器。谁能帮忙。