1 files changed, 13 insertions, 1 deletions
diff --git a/api_layers/arduino_layer.py b/api_layers/arduino_layer.py
index 07520d6..cd7cb92 100644
--- a/api_layers/arduino_layer.py
+++ b/api_layers/arduino_layer.py
@@ -81,6 +81,18 @@ except ImportError:
     _SERIAL_AVAILABLE = False
 
 
+def _dedupe_description(desc: str) -> str:
+    """pyserial on Linux often reports a USB-serial adapter's description as
+    "X - X" (same udev model string used for both halves when there's no
+    separate manufacturer/interface field — common on cheap FTDI/CH340
+    clones), which then reads as a literal duplicate everywhere this
+    description gets shown (device name, port picker). Collapse it."""
+    parts = desc.split(" - ")
+    if len(parts) == 2 and parts[0].strip() == parts[1].strip():
+        return parts[0].strip()
+    return desc
+
+
 class ArduinoLayer:
 
     DEFAULT_ANALOG_PINS  = ["A0", "A1", "A2", "A3", "A4", "A5"]
@@ -552,7 +564,7 @@ class ArduinoLayer:
             return []
         try:
             return [
-                (p.device, p.description or "")
+                (p.device, _dedupe_description(p.description or ""))
                 for p in serial.tools.list_ports.comports()
             ]
         except Exception as e: