connect working

package.json

@@ -5,9 +5,7 @@
   "version": "3.0.0-alpha",
   "description": "Homebridge plugin for Siemens Step7 and compatible PLCs. (https://github.com/homebridge)",
   "license": "Apache-2.0",
-
   "author": "Feilner",
-  "license": "Apache-2.0",
   "homepage": "https://github.com/Feilner/homebridge-plc#readme",
   "repository": {
     "type": "git",
@@ -45,6 +43,7 @@
     "@eslint/js": "^9.14.0",
     "@types/eslint__js": "^8.42.3",
     "@types/node": "^22.8.6",
+    "@types/node-snap7": "^0.2.24",
     "eslint": "^9.14.0",
     "homebridge": "^2.0.0-beta.0",
     "nodemon": "^3.1.7",

src/platform.ts

@@ -2,7 +2,7 @@ import type { API, Characteristic, DynamicPlatformPlugin, Logging, PlatformAcces
 
 import { ExamplePlatformAccessory } from './platformAccessory.js';
 import { PLATFORM_NAME, PLUGIN_NAME } from './settings.js';
-import { PLC } from './step7.cjs';
+import { PLC } from './step7.js';
 
 /**
  * HomebridgePlatform
@@ -25,6 +25,7 @@ export class ExampleHomebridgePlatform implements DynamicPlatformPlugin {
   ) {
     this.Service = api.hap.Service;
     this.Characteristic = api.hap.Characteristic;
+    this.log.error('nun wird es ernst' + this.config.ip);
     this.PLC = new PLC(log, this.config.ip, this.config.rack, this.config.slot, 'communicationOP' in this.config && this.config.communicationOP );
     if (!this.PLC.connect()) {
       this.log.error('Initial connect failed');

src/step7.ts

@@ -0,0 +1,55 @@
+
+import { Logging } from 'homebridge';
+import snap7 from 'node-snap7';
+import { isIPv4 } from 'net';
+import dns from 'dns';
+
+export class PLC {
+  private s7: snap7.S7Client;
+  private connType: snap7.ConnectionType;
+  private slot: number;
+  private rack: number;
+  private ip: string;
+  private isConnectOngoing: boolean;
+  private log: Logging;
+
+  constructor(log: Logging, ip: string, rack: number, slot: number, isOP: boolean) { 
+    this.s7 = new snap7.S7Client();
+    this.log = log;
+    this.ip = ip;
+    this.rack = rack;
+    this.slot = slot;
+    this.connType = isOP ? 0x1 : 0x2;
+    this.isConnectOngoing = false;    
+  }
+
+  //PLC connection check function
+  connect() {
+    const typeName = ['invalid', 'PG-Communication', 'OP-Communication'];
+
+    let rv = false;
+
+
+    if (this.s7.Connected()) {
+      rv = true;
+    } else {
+      this.log.info('Connecting to %s (%s:%s) %s', this.ip, this.rack, this.slot, typeName[this.connType]);
+
+      if (!this.isConnectOngoing) {
+        this.isConnectOngoing = true;
+        this.s7.SetConnectionType(this.connType);
+        const ok: boolean = this.s7.ConnectTo(this.ip, this.rack, this.slot);
+        this.isConnectOngoing = false;
+        if(ok) {
+          this.log.info('Connected to %s (%s:%s) %s', this.ip, this.rack, this.slot, typeName[this.connType]);
+          rv = true;
+        } else {
+          this.log.error('Connection to %s (%s:%s) %s failed', this.ip, this.rack, this.slot, typeName[this.connType]);
+        }        
+      }
+    }
+    return rv;
+  }
+}
+
+