node-red-contrib-freya-nodes/nodes/system-actuators/system-actuators.js

Custom nodes for Freya Vivarium Control System

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.ActuatorsDriver = void 0;
const dbus = require('dbus-native');
const events_1 = require("events");
class ActuatorsDriver extends events_1.EventEmitter {
    constructor() {
        super();
        this.bus = dbus.systemBus();
        this.init();
    }
    init() {
        return __awaiter(this, void 0, void 0, function* () {
            try {
                yield this.initDriverConnection();
                console.log('Connected to actuators driver');
                this.emit('status', { level: "ok", message: "Connected to actuators driver" });
            }
            catch (err) {
                console.error('Error connecting to actuators driver:', err);
                this.emit('status', { level: "error", message: "No connection to driver" });
                setTimeout(() => { this.init(); }, 5 * 1000);
            }
        });
    }
    initDriverConnection() {
        return __awaiter(this, void 0, void 0, function* () {
            const service = this.bus.getService('io.freya.SystemActuatorsDriver');
            this.iface = yield new Promise((resolve, reject) => {
                service.getInterface('/io/freya/SystemActuatorsDriver', 'io.freya.SystemActuatorsDriver', (err, iface) => {
                    if (err) {
                        reject(err);
                    }
                    else {
                        resolve(iface);
                    }
                });
            });
        });
    }
    setDigitalOutput(channel, state) {
        return __awaiter(this, void 0, void 0, function* () {
            if (!this.iface) {
                throw new Error('Driver not initialized. Call init() first.');
            }
            return new Promise((resolve, reject) => {
                this.iface.setDigitalOutput(channel, state, (err, result) => {
                    if (err) {
                        reject(err);
                    }
                    else {
                        resolve(result);
                    }
                });
            });
        });
    }
}
exports.ActuatorsDriver = ActuatorsDriver;