Index: leahi_dialin/dd/modules/alarms.py
===================================================================
diff -u -r7b57215288f7346175091c6f69e0edddca5018b5 -r1c0302ebcb0d4d70249ab0932f43b0143e19a1d9
--- leahi_dialin/dd/modules/alarms.py	(.../alarms.py)	(revision 7b57215288f7346175091c6f69e0edddca5018b5)
+++ leahi_dialin/dd/modules/alarms.py	(.../alarms.py)	(revision 1c0302ebcb0d4d70249ab0932f43b0143e19a1d9)
@@ -41,7 +41,7 @@
         self.logger = logger
 
         if self.can_interface is not None:
-            channel_id = DenaliChannels.fp_alarm_broadcast_ch_id
+            channel_id = DenaliChannels.dd_alarm_broadcast_ch_id
             msg_id = MsgIds.MSG_ID_ALARM_TRIGGERED.value
             self.can_interface.register_receiving_publication_function(channel_id, msg_id, self._handler_alarm_triggered)
 
@@ -126,5 +126,45 @@
     def _handler_alarm_info(self, message, timestamp = 0.0):
         pass
 
+    def cmd_alarm_state_override(self, alarm: int, state: int, reset: int = NO_RESET) -> int:
+        """
+        Constructs and sends the alarm state override command
+        Constraints:
+            Must be logged into DD.
+            Given alarm must be valid.
+            If inactivating alarm, given alarm must be recoverable (clearable).
 
+        @param alarm:  integer - ID of alarm to override
+        @param state:  integer - 1 for alarm active, 0 for alarm inactive
+        @param reset:  integer - 1 to reset a previous override, 0 to override
+        @return: 1 if successful, zero otherwise
+        """
+
+        rst = integer_to_bytearray(reset)
+        sta = integer_to_bytearray(state)
+        alm = integer_to_bytearray(alarm)
+        payload = rst + sta + alm
+
+        message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_dd_ch_id,
+                                              message_id=MsgIds.MSG_ID_DD_ALARM_STATE_OVERRIDE_REQUEST.value,
+                                              payload=payload)
+
+        # Send message
+        received_message = self.can_interface.send(message)
+
+        # If there is content...
+        if received_message is not None:
+            # self.logger.debug(received_message)
+            if reset == RESET:
+                str_res = "reset back to normal"
+            else:
+                str_res = ("active" if state != 0 else "inactive")
+            self.logger.debug("Alarm " + str(alarm) + " " + str_res + ": " +
+                              str(received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]))
+            # response payload is OK or not OK
+            return received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]
+        else:
+            self.logger.debug("Timeout!!!!")
+            return False
+
     #TODO: alarm state override, alarm info pubish override