From 05aa5500e7c9a570cc3604f88a8a13e8b8e54845 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E2=80=9CVeLiTi=E2=80=9D?= <“info@veliti.nl”>
Date: Thu, 29 Jan 2026 19:31:41 +0100
Subject: [PATCH] Improve error handling in connectDevice function to provide
 user-friendly messages for connection failures

---
 assets/scripts.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/assets/scripts.js b/assets/scripts.js
index 6a2744d..f35b6d1 100644
--- a/assets/scripts.js
+++ b/assets/scripts.js
@@ -124,7 +124,10 @@ async function connectDevice() {
         // Log connection failure details
         await logCommunication(`Serial connection failed: ${error.message || 'Unknown error'}`, 'disconnected');
         
-        if (openPort = 1){
+        // Check for specific "No port selected" error and show user-friendly message
+        if (error.message && error.message.includes('No port selected by the user')) {
+            progressBar("100", "No device selected, please try again", "#ff6666");
+        } else if (openPort === 1){
           closePort();
           console.log("Closing port");
           alert("System is still trying to close the serial port. If this message continues to come up please refresh this page.");