diff --git a/README.md b/README.md
index 8b80dbb..ac8f760 100644
--- a/README.md
+++ b/README.md
@@ -244,4 +244,6 @@ pytest -m smokewifi meshtastic/test/test_smoke_wifi.py::test_smokewifi_info
 
 ```
 pytest --cov=meshtastic
+# or if want html coverage report
+pytest --cov-report html --cov=meshtastic
 ```
diff --git a/meshtastic/__main__.py b/meshtastic/__main__.py
index 3460574..24217bb 100644
--- a/meshtastic/__main__.py
+++ b/meshtastic/__main__.py
@@ -7,7 +7,6 @@ import platform
 import logging
 import sys
 import time
-import os
 import yaml
 from pubsub import pub
 import pyqrcode
@@ -18,22 +17,19 @@ from .ble_interface import BLEInterface
 from . import test, remote_hardware
 from . import portnums_pb2, channel_pb2, mesh_pb2, radioconfig_pb2
 from . import tunnel
-from .util import support_info, our_exit
+from .util import support_info, our_exit, genPSK256, fromPSK, fromStr
+from .globals import Globals
 
 """We only import the tunnel code if we are on a platform that can run it"""
 have_tunnel = platform.system() == 'Linux'
 
-"""The command line arguments"""
-args = None
-
-"""The parser for arguments"""
-parser = argparse.ArgumentParser()
-
 channelIndex = 0
 
 
 def onReceive(packet, interface):
     """Callback invoked when a packet arrives"""
+    our_globals = Globals.getInstance()
+    args = our_globals.get_args()
     try:
         d = packet.get('decoded')
 
@@ -63,61 +59,6 @@ def onConnection(interface, topic=pub.AUTO_TOPIC):
     print(f"Connection changed: {topic.getName()}")
 
 
-trueTerms = {"t", "true", "yes"}
-falseTerms = {"f", "false", "no"}
-
-
-def genPSK256():
-    """Generate a random preshared key"""
-    return os.urandom(32)
-
-
-def fromPSK(valstr):
-    """A special version of fromStr that assumes the user is trying to set a PSK.
-    In that case we also allow "none", "default" or "random" (to have python generate one), or simpleN
-    """
-    if valstr == "random":
-        return genPSK256()
-    elif valstr == "none":
-        return bytes([0])  # Use the 'no encryption' PSK
-    elif valstr == "default":
-        return bytes([1])  # Use default channel psk
-    elif valstr.startswith("simple"):
-        # Use one of the single byte encodings
-        return bytes([int(valstr[6:]) + 1])
-    else:
-        return fromStr(valstr)
-
-
-def fromStr(valstr):
-    """try to parse as int, float or bool (and fallback to a string as last resort)
-
-    Returns: an int, bool, float, str or byte array (for strings of hex digits)
-
-    Args:
-        valstr (string): A user provided string
-    """
-    if len(valstr) == 0:  # Treat an emptystring as an empty bytes
-        val = bytes()
-    elif valstr.startswith('0x'):
-        # if needed convert to string with asBytes.decode('utf-8')
-        val = bytes.fromhex(valstr[2:])
-    elif valstr in trueTerms:
-        val = True
-    elif valstr in falseTerms:
-        val = False
-    else:
-        try:
-            val = int(valstr)
-        except ValueError:
-            try:
-                val = float(valstr)
-            except ValueError:
-                val = valstr  # Not a float or an int, assume string
-
-    return val
-
-
 never = 0xffffffff
 oneday = 24 * 60 * 60
 
@@ -197,7 +138,8 @@ def onConnected(interface):
     """Callback invoked when we connect to a radio"""
     closeNow = False  # Should we drop the connection after we finish?
     try:
-        global args
+        our_globals = Globals.getInstance()
+        args = our_globals.get_args()
 
         print("Connected to radio")
 
@@ -564,7 +506,9 @@ def subscribe():
 
 def common():
     """Shared code for all of our command line wrappers"""
-    global args
+    our_globals = Globals.getInstance()
+    args = our_globals.get_args()
+    parser = our_globals.get_parser()
     logging.basicConfig(level=logging.DEBUG if args.debug else logging.INFO)
 
     if len(sys.argv) == 1:
@@ -641,7 +585,9 @@ def common():
 
 def initParser():
     """ Initialize the command line argument parsing."""
-    global parser, args
+    our_globals = Globals.getInstance()
+    parser = our_globals.get_parser()
+    args = our_globals.get_args()
 
     parser.add_argument(
         "--configure",
@@ -806,19 +752,28 @@ def initParser():
         "--support", action='store_true', help="Show support info (useful when troubleshooting an issue)")
 
     args = parser.parse_args()
+    our_globals.set_args(args)
+    our_globals.set_parser(parser)
 
 
 def main():
     """Perform command line meshtastic operations"""
+    our_globals = Globals.getInstance()
+    parser = argparse.ArgumentParser()
+    our_globals.set_parser(parser)
     initParser()
     common()
 
 
 def tunnelMain():
     """Run a meshtastic IP tunnel"""
-    global args
+    our_globals = Globals.getInstance()
+    parser = argparse.ArgumentParser()
+    our_globals.set_parser(parser)
     initParser()
+    args = our_globals.get_args()
     args.tunnel = True
+    our_globals.set_args(args)
     common()
 
 
diff --git a/meshtastic/globals.py b/meshtastic/globals.py
new file mode 100644
index 0000000..c255e81
--- /dev/null
+++ b/meshtastic/globals.py
@@ -0,0 +1,44 @@
+"""Globals singleton class.
+
+   Instead of using a global, stuff your variables in this "trash can".
+   This is not much better than using python's globals, but it allows
+   us to better test meshtastic. Plus, there are some weird python
+   global issues/gotcha that we can hopefully avoid by using this
+   class in stead.
+"""
+
+class Globals:
+    """Globals class is a Singleton."""
+    __instance = None
+
+    @staticmethod
+    def getInstance():
+        """Get an instance of the Globals class."""
+        if Globals.__instance is None:
+            Globals()
+        return Globals.__instance
+
+    def __init__(self):
+        """Constructor for the Globals CLass"""
+        if Globals.__instance is not None:
+            raise Exception("This class is a singleton")
+        else:
+            Globals.__instance = self
+        self.args = None
+        self.parser = None
+
+    def set_args(self, args):
+        """Set the args"""
+        self.args = args
+
+    def set_parser(self, parser):
+        """Set the parser"""
+        self.parser = parser
+
+    def get_args(self):
+        """Get args"""
+        return self.args
+
+    def get_parser(self):
+        """Get parser"""
+        return self.parser
diff --git a/meshtastic/test/test_globals.py b/meshtastic/test/test_globals.py
new file mode 100644
index 0000000..da9d08b
--- /dev/null
+++ b/meshtastic/test/test_globals.py
@@ -0,0 +1,25 @@
+"""Meshtastic unit tests for globals.py
+"""
+
+import pytest
+
+from ..globals import Globals
+
+
+@pytest.mark.unit
+def test_globals_get_instaance():
+    """Test that we can instantiate a Globals instance"""
+    ourglobals = Globals.getInstance()
+    ourglobals2 = Globals.getInstance()
+    assert ourglobals == ourglobals2
+
+
+@pytest.mark.unit
+def test_globals_there_can_be_only_one():
+    """Test that we can cannot create two Globals instances"""
+    # if we have an instance, delete it
+    Globals.getInstance()
+    with pytest.raises(Exception) as pytest_wrapped_e:
+        # try to create another instance
+        Globals()
+    assert pytest_wrapped_e.type == Exception
diff --git a/meshtastic/test/test_main.py b/meshtastic/test/test_main.py
new file mode 100644
index 0000000..c745d5a
--- /dev/null
+++ b/meshtastic/test/test_main.py
@@ -0,0 +1,43 @@
+"""Meshtastic unit tests for __main__.py"""
+
+import sys
+import argparse
+import re
+
+import pytest
+
+from meshtastic.__main__ import initParser, Globals
+
+
+@pytest.mark.unit
+def test_main_init_parser_no_args(capsys):
+    """Test no arguments"""
+    sys.argv = ['']
+    args = sys.argv
+    our_globals = Globals.getInstance()
+    parser = argparse.ArgumentParser()
+    our_globals.set_parser(parser)
+    our_globals.set_args(args)
+    initParser()
+    out, err = capsys.readouterr()
+    assert out == ''
+    assert err == ''
+
+
+@pytest.mark.unit
+def test_main_init_parser_version(capsys):
+    """Test --version"""
+    sys.argv = ['', '--version']
+    args = sys.argv
+    parser = None
+    parser = argparse.ArgumentParser()
+    our_globals = Globals.getInstance()
+    our_globals.set_parser(parser)
+    our_globals.set_args(args)
+    with pytest.raises(SystemExit) as pytest_wrapped_e:
+        initParser()
+    assert pytest_wrapped_e.type == SystemExit
+    assert pytest_wrapped_e.value.code == 0
+    out, err = capsys.readouterr()
+    assert re.match(r'[0-9]+\.[0-9]+\.[0-9]', out)
+    assert err == ''
diff --git a/meshtastic/test/test_util.py b/meshtastic/test/test_util.py
index cf5f638..20e095d 100644
--- a/meshtastic/test/test_util.py
+++ b/meshtastic/test/test_util.py
@@ -4,7 +4,45 @@ import re
 
 import pytest
 
-from meshtastic.util import fixme, stripnl, pskToString, our_exit, support_info
+from meshtastic.util import fixme, stripnl, pskToString, our_exit, support_info, genPSK256, fromStr, fromPSK
+
+
+@pytest.mark.unit
+def test_genPSK256():
+    """Test genPSK256"""
+    assert genPSK256() != ''
+
+
+@pytest.mark.unit
+def test_fromStr():
+    """Test fromStr"""
+    assert fromStr('') == b''
+    assert fromStr('0x12') == b'\x12'
+    assert fromStr('t')
+    assert fromStr('T')
+    assert fromStr('true')
+    assert fromStr('True')
+    assert fromStr('yes')
+    assert fromStr('Yes')
+    assert fromStr('f') is False
+    assert fromStr('F') is False
+    assert fromStr('false') is False
+    assert fromStr('False') is False
+    assert fromStr('no') is False
+    assert fromStr('No') is False
+    assert fromStr('100.01') == 100.01
+    assert fromStr('123') == 123
+    assert fromStr('abc') == 'abc'
+
+
+@pytest.mark.unit
+def test_fromPSK():
+    """Test fromPSK"""
+    assert fromPSK('random') != ''
+    assert fromPSK('none') == b'\x00'
+    assert fromPSK('default') == b'\x01'
+    assert fromPSK('simple22') == b'\x17'
+    assert fromPSK('trash') == 'trash'
 
 
 @pytest.mark.unit
diff --git a/meshtastic/util.py b/meshtastic/util.py
index 77a69b8..dc9d0b2 100644
--- a/meshtastic/util.py
+++ b/meshtastic/util.py
@@ -2,6 +2,7 @@
 """
 import traceback
 from queue import Queue
+import os
 import sys
 import time
 import platform
@@ -15,6 +16,55 @@ import pkg_resources
 blacklistVids = dict.fromkeys([0x1366])
 
 
+def genPSK256():
+    """Generate a random preshared key"""
+    return os.urandom(32)
+
+
+def fromPSK(valstr):
+    """A special version of fromStr that assumes the user is trying to set a PSK.
+    In that case we also allow "none", "default" or "random" (to have python generate one), or simpleN
+    """
+    if valstr == "random":
+        return genPSK256()
+    elif valstr == "none":
+        return bytes([0])  # Use the 'no encryption' PSK
+    elif valstr == "default":
+        return bytes([1])  # Use default channel psk
+    elif valstr.startswith("simple"):
+        # Use one of the single byte encodings
+        return bytes([int(valstr[6:]) + 1])
+    else:
+        return fromStr(valstr)
+
+
+def fromStr(valstr):
+    """try to parse as int, float or bool (and fallback to a string as last resort)
+    Returns: an int, bool, float, str or byte array (for strings of hex digits)
+
+    Args:
+        valstr (string): A user provided string
+    """
+    if len(valstr) == 0:  # Treat an emptystring as an empty bytes
+        val = bytes()
+    elif valstr.startswith('0x'):
+        # if needed convert to string with asBytes.decode('utf-8')
+        val = bytes.fromhex(valstr[2:])
+    elif valstr.lower() in {"t", "true", "yes"}:
+        val = True
+    elif valstr.lower() in {"f", "false", "no"}:
+        val = False
+    else:
+        try:
+            val = int(valstr)
+        except ValueError:
+            try:
+                val = float(valstr)
+            except ValueError:
+                val = valstr  # Not a float or an int, assume string
+    return val
+
+
 def pskToString(psk: bytes):
     """Given an array of PSK bytes, decode them into a human readable (but privacy protecting) string"""
     if len(psk) == 0: