Add WiFi reset functionality

app/models.py

@@ -908,6 +908,12 @@ def reset_eeprom(self):
         synced = self.sync_temp_format()                # ...then resync the temp format
         return synced
 
+    def reset_wifi(self):
+        response = self.send_message("resetWiFi") # Reset the controller WiFi settings
+        time.sleep(1)                                   # Give it 1 second to complete
+        synced = self.sync_temp_format()                # ...then resync the temp format
+        return synced
+
     def get_control_constants(self):
         return json.loads(self.send_message("getControlConstants", read_response=True))
 

app/templates/device_manage.html

@@ -98,6 +98,15 @@ <h2>Reset EEPROM</h2>
     </p>
     <a href="{% url 'device_eeprom_reset' active_device.id %}" class="btn btn-danger btn-large btn-lg">Reset EEPROM</a>
 
+    <h2>Reset WiFi Settings</h2>
+    <p>
+        If you need to reset the WiFi configuration on your device (for switching to a new network/router, for example)
+        click the button below to delete the WiFi connection settings on the device. Once the settings have been erased
+        you will need to physically reset the device to cause it to launch the configuration access point.
+    </p>
+    <a href="{% url 'device_wifi_reset' active_device.id %}" class="btn btn-danger btn-large btn-lg">Reset WiFi Settings</a>
+
+
     <h2>Uninstall Device</h2>
     <p>
         To uninstall a device from Fermentrack, approve the following statements and click the "Uninstall Device" button

app/views.py

@@ -660,6 +660,29 @@ def device_eeprom_reset(request, device_id):
         messages.success(request, "Device EEPROM reset")
         return redirect("device_control_constants", device_id=device_id)
 
+
+@login_required
+@site_is_configured
+def device_wifi_reset(request, device_id):
+    try:
+        active_device = BrewPiDevice.objects.get(id=device_id)
+    except:
+        messages.error(request, "Unable to load device with ID {}".format(device_id))
+        return redirect('siteroot')
+
+    # Using this as a proxy to check if we can connect
+    control_constants, is_legacy = active_device.retrieve_control_constants()
+
+    if control_constants is None:
+        # We weren't able to retrieve the version from the controller.
+        messages.error(request, u"Unable to reach brewpi-script for device {}".format(active_device))
+        return redirect('device_dashboard', device_id=device_id)
+    else:
+        active_device.reset_wifi()
+        messages.success(request, "Device WiFi settings reset. Reset the device to access the configuration AP.")
+        return redirect("device_control_constants", device_id=device_id)
+
+
 def site_help(request):
     return render(request, template_name='site_help.html', context={})
 

brewpi-script/brewpi.py

@@ -665,6 +665,11 @@ def trigger_refresh(read_values=False):
             bg_ser.writeln('c')  # request control constants cc
             bg_ser.writeln('v')  # request control variables cv
 
+            trigger_refresh(True)  # Refresh the device list cache (will also raise socket.timeout)
+        elif messageType == "resetWiFi":
+            logMessage("Resetting controller WiFi settings")
+            bg_ser.writeln("w")
+            # TODO - Determine if we should sleep & exit here
             trigger_refresh(True)  # Refresh the device list cache (will also raise socket.timeout)
         else:
             logMessage("Error: Received invalid message on socket: " + message)

fermentrack_django/urls.py

@@ -59,6 +59,7 @@
     # TODO - Implement temperature control AJAX API calls
     url(r'^devices/(?P<device_id>\d{1,20})/temp_control/$', app.views.device_temp_control, name='device_temp_control'),
     url(r'^devices/(?P<device_id>\d{1,20})/reset/$', app.views.device_eeprom_reset, name='device_eeprom_reset'),
+    url(r'^devices/(?P<device_id>\d{1,20})/wifi_reset/$', app.views.device_wifi_reset, name='device_wifi_reset'),
     url(r'^devices/(?P<device_id>\d{1,20})/manage/$', app.views.device_manage, name='device_manage'),
     url(r'^devices/(?P<device_id>\d{1,20})/uninstall/$', app.views.device_uninstall, name='device_uninstall'),