Can detect DFU mode upon connecting

latest/Apps/maiana-update/maianaclient.py

@@ -3,8 +3,14 @@ import sys
 import glob
 import time
 import re
+from enum import Enum
 
 
+class MaianaStatus(Enum):
+    UNKNOWN = 0
+    RUNNING = 1
+    DFU = 2
+
 class MaianaClient:
     VESSEL_TYPES = [30, 34, 36, 37]
 
@@ -38,6 +44,23 @@ class MaianaClient:
                 pass
         return result
 
+    @staticmethod
+    def determineStatus(port):
+        port.flushInput()
+        port.flushOutput()
+        s = port.readline().strip()
+        port.write(b'\r\n')
+        for i in range(5):
+            s = port.readline().strip()
+            if s.find(b"bootloader") > -1:
+                return MaianaStatus.DFU
+            else:
+                tokens = s.decode('utf-8').split(',')
+                if (tokens[0][0] == '$' or tokens[0][0] == '!') and len(tokens) >= 2:
+                    return MaianaStatus.RUNNING
+
+        return MaianaStatus.UNKNOWN
+
     @staticmethod
     def sendCmdWithResponse(port, cmd, resp):
         port.flushInput()

latest/Apps/maiana-update/mainwindow.py

@@ -1,5 +1,5 @@
 from mainframe import MainFrame
-from model import MaianaClient
+from maianaclient import MaianaClient, MaianaStatus
 import serial
 import wx
 from fwUpdateThread import *
@@ -24,13 +24,23 @@ class MainWindow(MainFrame):
                 wx.MessageBox(b'Unable to open port, it may be in use', 'Error', wx.OK | wx.ICON_ERROR)
                 return
 
-            self.port.flushInput()
+            status = MaianaClient.determineStatus(self.port)
-            self.port.flushOutput()
+
-            self.m_SerialBtn.SetLabel(b'Disconnect')
+            if status == MaianaStatus.UNKNOWN:
-            self.enableUI()
+                pass
-            if self.refreshSys():
+            elif status == MaianaStatus.DFU:
-                self.refreshStation()
+                wx.MessageBox(b'MAIANA is currently in firmware update mode. This is the only task you can perform.',
+                              'DFU warning', wx.OK)
+                self.enableUI()
+                self.m_SerialBtn.SetLabel(b'Disconnect')
                 self.m_StationSaveBtn.Disable()
+            else:
+                #Assuming status is RUNNING
+                self.m_SerialBtn.SetLabel(b'Disconnect')
+                self.enableUI()
+                if self.refreshSys():
+                    self.refreshStation()
+                    self.m_StationSaveBtn.Disable()
         else:
             self.port.close()
             self.port = None
@@ -78,6 +88,7 @@ class MainWindow(MainFrame):
             self.m_FWProgress.SetValue(0)
             self.m_FWUpdateStatusLbl.SetLabel("Transfer completed")
             self.refreshSys()
+            self.refreshStation()
         elif evt.eventType == EventType.ERROR:
             self.m_FWUpdateStatusLbl.SetLabel(evt.data)