add CRC-8

README.md

@@ -23,6 +23,9 @@ For now there is documentation in English here: https://wiki.hafenmeister.de
 	Placeholder for the next version (at the beginning of the line):
 	### **WORK IN PROGRESS**
 -->
+### **WORK IN PROGRESS**
+* (BenAhrdt) add CRC-8
+
 ### 1.5.4 (2024-11-15)
 * (BenAhrdt) add roles and fix responsive issues
 

admin/jsonConfig.json

@@ -513,6 +513,7 @@
 									"tooltip": "crcTooltip",
 									"options": [
 										{"label":"no crc","value":"noCrc"},
+										{"label":"CRC-8","value":"CRC-8"},
 										{"label":"KERMIT","value":"KERMIT"},
 										{"label":"KERMIT (Little Endian)","value":"KERMIT.LittleEndian"}
 									],

lib/modules/downlinkConfighandler.js

@@ -1,6 +1,6 @@
 const fs = require("fs");
 const { isDeepStrictEqual } = require("util");
-const {crc16} = require("easy-crc");
+const {crc8, crc16} = require("easy-crc");
 
 class downlinkConfighandlerClass {
 	constructor(adapter) {
@@ -339,7 +339,15 @@ class downlinkConfighandlerClass {
 			}
 		}
 		if(crcAlgorithm && crcAlgorithm !== "noCrc"){
-			let crc = crc16(crcAlgorithm,Buffer.from(payloadInHex,"hex")).toString(16);
+			let crc = null;
+			if(crcAlgorithm === "CRC-8"){
+				crc = crc8(crcAlgorithm,Buffer.from(payloadInHex,"hex")).toString(16);
+			}
+			else{
+				crc = crc16(crcAlgorithm,Buffer.from(payloadInHex,"hex")).toString(16);
+			}
+
+			// Check for swap if little endian is selected
 			if(crcSwap){
 				crc = Buffer.from(crc,"hex").reverse().toString("hex");
 			}