From c2d5f478201044d583bca78ddb27ef5f98ae1520 Mon Sep 17 00:00:00 2001
From: theshaun <shaun@theshaun.com>
Date: Fri, 23 Jan 2026 18:43:49 +1000
Subject: [PATCH] Add support for the FemtoFox

---
 radio-settings.json                           | 18 ++++++++++++++++++
 repeater/config.py                            |  2 ++
 repeater/data_acquisition/letsmesh_handler.py |  8 +++++++-
 3 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/radio-settings.json b/radio-settings.json
index eca0e6f..09cf159 100644
--- a/radio-settings.json
+++ b/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
     }
   }
 }
diff --git a/repeater/config.py b/repeater/config.py
index ffe9268..de24fef 100644
--- a/repeater/config.py
+++ b/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"],
diff --git a/repeater/data_acquisition/letsmesh_handler.py b/repeater/data_acquisition/letsmesh_handler.py
index e3e83d2..32ef579 100644
--- a/repeater/data_acquisition/letsmesh_handler.py
+++ b/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: