updated globals list, fixed packet references that were linking to old controller mistakenly

.vscode/settings.json

@@ -6,6 +6,7 @@
         "rs",
         "bit",
         "parallel",
-        "colors"
+        "colors",
+        "textutils"
     ]
 }

rtu/threads.lua

@@ -234,7 +234,7 @@ threads.thread__unit_comms = function (smem, unit)
                 elseif msg.qtype == mqueue.TYPE.PACKET then
                     -- received a packet
                     unit.modbus_busy = true
-                    local return_code, reply = unit.modbus_io.handle_packet(packet)
+                    local return_code, reply = unit.modbus_io.handle_packet(msg.message)
                     rtu_comms.send_modbus(reply)
                     unit.modbus_busy = false
                 end

supervisor/session/rtu.lua

@@ -99,8 +99,8 @@ rtu.new_session = function (id, in_queue, out_queue)
                 self.connected = false
             elseif pkt.type == SCADA_MGMT_TYPES.RTU_ADVERT then
                 -- RTU unit advertisement
-                for i = 1, packet.length do
-                    local unit = packet.data[i]
+                for i = 1, pkt.length do
+                    local unit = pkt.data[i]
                 end
             else
                 log.debug(log_header .. "handler received unsupported SCADA_MGMT packet type " .. pkt.type)