Improve docs for config

biogascontrollerapp.py

@@ -208,7 +208,7 @@ if __name__ == "__main__":
 
     # Start the application
     try:
-        if hasattr(sys, '_MEIPASS'):
+        if hasattr(sys, "_MEIPASS"):
             resource_add_path(os.path.join(sys._MEIPASS))
         BiogasControllerApp().run()
     except Exception as e:

util/config.py

@@ -47,11 +47,12 @@ def read_config(
         key_0: The first key (top level)
         key_1: The second key (where the actual key-value pair is)
         default: The default value to return if the check fails
-        valid_entries: [Optiona] The entries that are valid ones to check against
+        valid_entries: [Optional] The entries that are valid ones to check against
         type_to_validate: [Optional] Data type to validate
 
     Returns:
-        [TODO:return]
+        The read config option as a string. You can cast this to the type you specified with type_to_validate safely.
+        When converting to a boolean though, use the str_to_bool function provided by this library
     """
     # Try loading the keys
     tmp = {}

util/test/com.py

@@ -249,7 +249,7 @@ class Com(ControllerConnection):
     def __add_integer_as_hex(self, c: int):
         """Writes the hexadecimal representation of the high and low bytes of integer `c` (16-bit) to the simulated serial port."""
         if not (0 <= c <= 0xFFFF):
-            raise ValueError("Input must be a 16-bit integer (0–65535)")
+            raise ValueError("Input must be a 16-bit integer (0-65535)")
 
         # Get high byte (most significant byte)
         hi_byte = (c >> 8) & 0xFF