diff --git a/meshtastic/serial_interface.py b/meshtastic/serial_interface.py
index b91e9b8..a9d5dd7 100644
--- a/meshtastic/serial_interface.py
+++ b/meshtastic/serial_interface.py
@@ -4,6 +4,7 @@
 import logging
 import sys
 import time
+from io import TextIOWrapper
 
 from typing import List, Optional
 
@@ -44,7 +45,10 @@ class SerialInterface(StreamInterface):
 
         logger.debug(f"Connecting to {self.devPath}")
 
-        self._set_hupcl_with_termios()
+        if sys.platform != "win32":
+            with open(self.devPath, encoding="utf8") as f:
+                self._set_hupcl_with_termios(f)
+            time.sleep(0.1)
 
         self.stream = serial.Serial(
             self.devPath, 115200, exclusive=True, timeout=0.5, write_timeout=0
@@ -56,21 +60,17 @@ class SerialInterface(StreamInterface):
             self, debugOut=debugOut, noProto=noProto, connectNow=connectNow, noNodes=noNodes
         )
 
-    def _set_hupcl_with_termios(self):
+    def _set_hupcl_with_termios(self, f: TextIOWrapper):
         """first we need to set the HUPCL so the device will not reboot based on RTS and/or DTR
         see https://github.com/pyserial/pyserial/issues/124
         """
         if sys.platform == "win32":
             return
 
-        with open(self.devPath, encoding="utf8") as f:
-            import termios  # pylint: disable=C0415,E0401
-            attrs = termios.tcgetattr(f)
-            attrs[2] = attrs[2] & ~termios.HUPCL
-            termios.tcsetattr(f, termios.TCSAFLUSH, attrs)
-            f.close()
-
-        time.sleep(0.1)
+        import termios  # pylint: disable=C0415,E0401
+        attrs = termios.tcgetattr(f)
+        attrs[2] = attrs[2] & ~termios.HUPCL
+        termios.tcsetattr(f, termios.TCSAFLUSH, attrs)
 
     def __repr__(self):
         rep = f"SerialInterface(devPath={self.devPath!r}"
diff --git a/meshtastic/slog/slog.py b/meshtastic/slog/slog.py
index 766139b..28e79f6 100644
--- a/meshtastic/slog/slog.py
+++ b/meshtastic/slog/slog.py
@@ -32,7 +32,7 @@ def root_dir() -> str:
     app_author = "meshtastic"
     app_dir = platformdirs.user_data_dir(app_name, app_author)
     dir_name = Path(app_dir, "slogs")
-    dir_name.mkdir(exist_ok=True)
+    dir_name.mkdir(exist_ok=True, parents=True)
     return str(dir_name)
 
 
diff --git a/meshtastic/tests/test_main.py b/meshtastic/tests/test_main.py
index 75ec5c1..251de98 100644
--- a/meshtastic/tests/test_main.py
+++ b/meshtastic/tests/test_main.py
@@ -979,10 +979,11 @@ def test_main_set_valid(mocked_findports, mocked_serial, mocked_open, mocked_hup
 
 @pytest.mark.unit
 @pytest.mark.usefixtures("reset_mt_config")
+@patch("meshtastic.serial_interface.SerialInterface._set_hupcl_with_termios")
 @patch("builtins.open", new_callable=mock_open, read_data="data")
 @patch("serial.Serial")
 @patch("meshtastic.util.findPorts", return_value=["/dev/ttyUSBfake"])
-def test_main_set_valid_wifi_psk(mocked_findports, mocked_serial, mocked_open, capsys):
+def test_main_set_valid_wifi_psk(mocked_findports, mocked_serial, mocked_open, mocked_hupcl, capsys):
     """Test --set with valid field"""
     sys.argv = ["", "--set", "network.wifi_psk", "123456789"]
     mt_config.args = sys.argv
diff --git a/meshtastic/tests/test_serial_interface.py b/meshtastic/tests/test_serial_interface.py
index b902234..cb5b3e2 100644
--- a/meshtastic/tests/test_serial_interface.py
+++ b/meshtastic/tests/test_serial_interface.py
@@ -1,8 +1,8 @@
 """Meshtastic unit tests for serial_interface.py"""
-import platform
 # pylint: disable=R0917
 
 import re
+import sys
 from unittest.mock import mock_open, patch
 
 import pytest
@@ -10,7 +10,6 @@ import pytest
 from ..serial_interface import SerialInterface
 from ..protobuf import config_pb2
 
-
 @pytest.mark.unit
 @patch("time.sleep")
 @patch("meshtastic.serial_interface.SerialInterface._set_hupcl_with_termios")
@@ -28,11 +27,11 @@ def test_SerialInterface_single_port(
     iface.close()
     mocked_findPorts.assert_called()
     mocked_serial.assert_called()
-    mock_hupcl.assert_called()
 
-    # doesn't get called in SerialInterface._set_hupcl_with_termios on windows
-    if platform.system() != "Windows":
+    # doesn't get called in SerialInterface on windows
+    if sys.platform != "win32":
         mocked_open.assert_called()
+        mock_hupcl.assert_called()
 
     mock_sleep.assert_called()
     out, err = capsys.readouterr()