Index: .gitignore
===================================================================
diff -u -r9d36fd7bbc0b883dab1140a7377f75fdca70e474 -r9f44c02ff3f40812ab9fd7f9c7346f649a114c19
--- .gitignore	(.../.gitignore)	(revision 9d36fd7bbc0b883dab1140a7377f75fdca70e474)
+++ .gitignore	(.../.gitignore)	(revision 9f44c02ff3f40812ab9fd7f9c7346f649a114c19)
@@ -1,5 +1,5 @@
 # ignore folders
-__pycache__/
+__pycache__
 document/html/
 document/latex/
 .idea/
Index: leahi_dialin/ui/TD_Messaging.py
===================================================================
diff -u
--- leahi_dialin/ui/TD_Messaging.py	(revision 0)
+++ leahi_dialin/ui/TD_Messaging.py	(revision 9f44c02ff3f40812ab9fd7f9c7346f649a114c19)
@@ -0,0 +1,45 @@
+#!/bin/python3
+
+from utils import singleton
+from utils import conversions
+from protocols import CAN
+from common import msg_ids
+
+
+@singleton
+class TD_Messaging:
+
+
+    def __init__(self):
+
+        self.can_enabled: bool=False
+        self.can_Channel: str = "can0"
+
+        self.can_interface = CAN.DenaliCanMessenger(can_interface=self.can_Channel)
+        self.can_interface.start()
+
+        if self.can_interface is not None:
+            self.can_enabled = True
+
+
+    def cmd_send_hd_operation_mode(self, op_mode: int, sub_mode: int = 0):
+        """
+        Broadcasts the current HD operation mode
+        @param op_mode: hd operation mode
+        @param sub_mode: hd operation sub-mode
+        @return: None
+        """
+
+        if not self.can_enabled:
+            raise ValueError("CAN Interface is not enabled")
+
+
+        payload =  conversions.integer_to_bytearray(op_mode )
+        payload += conversions.integer_to_bytearray(sub_mode)
+
+        message = CAN.DenaliMessage.build_message(
+                                            channel_id=CAN.DenaliChannels.td_sync_broadcast_ch_id,
+                                            message_id=msg_ids.MsgIds.MSG_ID_TD_OP_MODE_DATA.value,
+                                            payload=payload)
+
+        self.can_interface.send(message, 0)
Index: leahi_dialin/ui/utils.py
===================================================================
diff -u -r9d36fd7bbc0b883dab1140a7377f75fdca70e474 -r9f44c02ff3f40812ab9fd7f9c7346f649a114c19
--- leahi_dialin/ui/utils.py	(.../utils.py)	(revision 9d36fd7bbc0b883dab1140a7377f75fdca70e474)
+++ leahi_dialin/ui/utils.py	(.../utils.py)	(revision 9f44c02ff3f40812ab9fd7f9c7346f649a114c19)
@@ -18,7 +18,22 @@
 import struct
 from subprocess import check_output
 
+def singleton(cls):
+    """
+    This is a singleton decorator
+    Returns:
+        cls: as for defintion of the singleton, it created the class instance once and will return on each access, instead of the recreation.
+    """
+    instances = {}
 
+    def get_instance(*args, **kwargs):
+        if cls not in instances:
+            instances[cls] = cls(*args, **kwargs)
+        return instances[cls]
+
+    return get_instance
+
+
 def srsui(vstr=""):
     """
     for user convenience if wanted to put a note for the SRSUI