use CayenneLpp from meshcore.js 1.7.0

meshcore-bot.js

@@ -1,6 +1,6 @@
 #!/usr/bin/env node
 
-import { Constants, NodeJSSerialConnection } from "@liamcottle/meshcore.js";
+import { Constants, NodeJSSerialConnection, CayenneLpp } from "@liamcottle/meshcore.js";
 import yargs from 'yargs';
 import { hideBin } from 'yargs/helpers';
 import fs from 'fs';
@@ -9,35 +9,6 @@ function getTimestamp() {
     return new Date().toISOString().slice(0, -5) + 'Z';
 }
 
-class LPPDecoder {
-    // Decode Cayenne Low Power Payload (LPP) for LoraWan
-    constructor() {
-        this.sensors = [];
-    }
-
-    decode(data) {
-        const buffer = Buffer.from(data);
-        let i = 0;
-        while (i < buffer.length) {
-            const channel = buffer[i++];
-            const type = buffer[i++];
-            switch (type) {
-                // Source: https://discord.com/channels/1343693475589263471/1391673743453192242/1395240557176950876
-                case 0x74: { // static const LPP_VOLTAGE = 116;
-                    const name = "lpp_volts";
-                    this.sensors.push({ channel, type, name, value: buffer.readInt16BE(i) / 100 });
-                    i += 2; // 2 bytes 0.01V unsigned
-                    break;
-                }
-                default:
-                    i = buffer.length;
-                    break;
-            }
-        }
-        return this.sensors;
-    }
-}
-
 const argv = yargs(hideBin(process.argv))
     .option('port', {
         alias: 's',
@@ -242,21 +213,16 @@ async function getRepeaterTelemetry(publicKeyPrefix, repeaterPassword) {
         console.log("Fetching telemetry...");
         const telemetry = await connection.getTelemetry(contact.publicKey);
         console.log(`[${getTimestamp()}] Repeater telemetry`, telemetry);
-        let lpp_volts = 0.0;
-        if (telemetry.lppSensorData) {
-            try {
-                const lpp = new LPPDecoder();
-                const decoded = lpp.decode(telemetry.lppSensorData);
-                console.log(`[${getTimestamp()}] Decoded repeater telemetry`, decoded);
-                for (const sensor of decoded) {
-                    if (sensor.name === "lpp_volts") {
-                        lpp_volts = sensor.value;
-                        console.log(`LPP Voltage: ${lpp_volts} V`);
-                    }
-                }
-            } catch (e) {
-                console.error("Error decoding repeater telemetry", e);
-            }
+        // parse telemetry
+        const parsedTelemetry = CayenneLpp.parse(telemetry.lppSensorData);
+        console.log(`[${getTimestamp()}] Decoded repeater telemetry`, parsedTelemetry);
+        // find battery voltage telemetry on channel 1
+        const lpp_volts = parsedTelemetry.find((item) => item.channel === 1 && item.type === CayenneLpp.LPP_VOLTAGE)?.value;
+
+        if(lpp_volts !== undefined) {
+            console.log(`LPP Voltage: ${lpp_volts} V`);
+        } else {
+            console.log("LPP Voltage not found in telemetry");
         }
 
         if (csvFile) {

package-lock.json

@@ -5,15 +5,23 @@
   "requires": true,
   "packages": {
     "": {
+      "name": "meshcore-bot",
       "version": "1.0.0",
+      "license": "Apache-2.0",
       "dependencies": {
-        "@liamcottle/meshcore.js": "^1.6.0",
+        "@liamcottle/meshcore.js": "^1.7.0",
         "yargs": "^17.7.2"
       },
+      "bin": {
+        "meshcore-bot": "meshcore-bot.js"
+      },
       "devDependencies": {
         "@eslint/js": "^9.34.0",
         "eslint": "^9.35.0",
         "globals": "^16.3.0"
+      },
+      "engines": {
+        "node": ">=18"
       }
     },
     "node_modules/@eslint-community/eslint-utils": {
@@ -237,9 +245,9 @@
       }
     },
     "node_modules/@liamcottle/meshcore.js": {
-      "version": "1.6.0",
-      "resolved": "https://registry.npmjs.org/@liamcottle/meshcore.js/-/meshcore.js-1.6.0.tgz",
-      "integrity": "sha512-aJToAlzoMA0OUOM+tp3LoxQzxPnYyV15oHDi3qDFWdznwkAmOyOcZHq40f1X+BAy7a13tbRiDecU6lwr3w65/g==",
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/@liamcottle/meshcore.js/-/meshcore.js-1.7.0.tgz",
+      "integrity": "sha512-GR43ZIMHXyfeCuuvS5wOaj1Q0bl3p0Epi9CPqHDx5UtVQZaCnQlem7XDDJxrKhqbAq7NkYkeoD9hsBtxkZwbxA==",
       "license": "MIT",
       "dependencies": {
         "@noble/curves": "^1.8.1",

package.json

@@ -7,7 +7,7 @@
     "url": "https://github.com/Cyclenerd/meshcore-bot/issues"
   },
   "dependencies": {
-    "@liamcottle/meshcore.js": "^1.6.0",
+    "@liamcottle/meshcore.js": "^1.7.0",
     "yargs": "^17.7.2"
   },
   "description": "Command bot that connects to a MeshCore companion radio device via USB serial",
@@ -16,9 +16,22 @@
     "eslint": "^9.35.0",
     "globals": "^16.3.0"
   },
+  "engines": {
+    "node": ">=22"
+  },
+  "files": [
+    "meshcore-bot.js"
+  ],
   "homepage": "https://github.com/Cyclenerd/meshcore-bot",
+  "keywords": [
+    "bot",
+    "cli",
+    "iot",
+    "meshcore"
+  ],
   "license": "Apache-2.0",
   "name": "meshcore-bot",
+  "private": false,
   "repository": {
     "type": "git",
     "url": "https://github.com/Cyclenerd/meshcore-bot.git"