new Parameter --debuglib for only meshtastic debug, more termios fixes for windows tests

(cherry picked from commit 4fc4d41d3d29998bb7b697bf412be5c1449ea950)

meshtastic/serial_interface.py

@@ -2,7 +2,7 @@
 """
 # pylint: disable=R0917
 import logging
-import platform
+import sys
 import time
 
 from typing import List, Optional
@@ -14,10 +14,6 @@ from meshtastic.stream_interface import StreamInterface
 
 logger = logging.getLogger(__name__)
 
-if platform.system() != "Windows":
-    import termios
-
-
 class SerialInterface(StreamInterface):
     """Interface class for meshtastic devices over a serial link"""
 
@@ -48,15 +44,7 @@ class SerialInterface(StreamInterface):
 
         logger.debug(f"Connecting to {self.devPath}")
 
-        # 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 platform.system() != "Windows":
-            with open(self.devPath, encoding="utf8") as f:
-                attrs = termios.tcgetattr(f)
-                attrs[2] = attrs[2] & ~termios.HUPCL
-                termios.tcsetattr(f, termios.TCSAFLUSH, attrs)
-                f.close()
-            time.sleep(0.1)
+        self._set_hupcl_with_termios()
 
         self.stream = serial.Serial(
             self.devPath, 115200, exclusive=True, timeout=0.5, write_timeout=0
@@ -68,6 +56,22 @@ class SerialInterface(StreamInterface):
             self, debugOut=debugOut, noProto=noProto, connectNow=connectNow, noNodes=noNodes
         )
 
+    def _set_hupcl_with_termios(self):
+        """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)
+
     def __repr__(self):
         rep = f"SerialInterface(devPath={self.devPath!r}"
         if hasattr(self, 'debugOut') and self.debugOut is not None: