Add support for Femtofox

radio-settings.json

@@ -110,6 +110,24 @@
       "use_dio3_tcxo": true,
       "use_dio2_rf": true,
       "preamble_length": 17
+    },
+    "femtofox-SX": {
+      "name": "FemtoFox SX1262",
+      "bus_id": 0,
+      "cs_id": 0,
+      "cs_pin": 16,
+      "gpio_chip": 1,
+      "use_gpiod_backend": true,
+      "reset_pin": 25,
+      "busy_pin": 22,
+      "irq_pin": 23,
+      "txen_pin": -1,
+      "rxen_pin": 24,
+      "txled_pin": -1,
+      "rxled_pin": -1,
+      "tx_power": 30,
+      "use_dio3_tcxo": true,
+      "preamble_length": 17
     }
   }
 }

repeater/config.py

@@ -216,6 +216,8 @@ def get_radio_for_board(board_config: dict):
             "bus_id": spi_config["bus_id"],
             "cs_id": spi_config["cs_id"],
             "cs_pin": spi_config["cs_pin"],
+            "gpio_chip": spi_config.get("gpio_chip", 0),
+            "use_gpiod_backend": spi_config.get("use_gpiod_backend", False),
             "reset_pin": spi_config["reset_pin"],
             "busy_pin": spi_config["busy_pin"],
             "irq_pin": spi_config["irq_pin"],

repeater/data_acquisition/letsmesh_handler.py

@@ -5,11 +5,17 @@
 import paho.mqtt.client as mqtt
 import threading
 
-from datetime import datetime, timedelta, UTC
+from datetime import datetime, timedelta
 from nacl.signing import SigningKey
 from typing import Callable, Optional, List, Dict
 from .. import __version__
 
+# Try to import datetime.UTC (Python 3.11+) otherwise fallback to timezone.utc
+try:
+    from datetime import UTC
+except Exception:
+    from datetime import timezone
+    UTC = timezone.utc
 
 # Try to import paho-mqtt error code mappings
 try: