Add puling effect for firmware update

Author: alexwohlbruck

docs/user-guide.md

@@ -16,16 +16,16 @@
   - [Signing out](#signing-out)
 
 ## LED indicator colors
-|                                                        | Color                  | Lamp mode                             |
-|--------------------------------------------------------|------------------------|---------------------------------------|
-| <img src="indicators/dot-blue-pulse.svg" width='12'>   | Blue pulsing           | Bluetooth pairing mode                |
-| <img src="indicators/dot-blue.svg" width='12'>         | Blue solid             | Bluetooth connected                   |
-| <img src="indicators/dot-amber-pulse.svg" width='12'>  | Amber pulsing          | Connecting to wifi                    |
-| <img src="indicators/dot-amber.svg" width='12'>        | Amber solid            | Connected to wifi                     |
-| <img src="indicators/dot-green-pulse.svg" width='12'>  | Green pulsing          | Connecting to server                  |
-| <img src="indicators/dot-green.svg" width='12'>        | Green solid            | Successfully set up                   |
-| <img src="indicators/dot-red.svg" width='12'>          | Red solid              | Error                                 |
-| <img src="indicators/dot-white-pulse.svg" width='12'>  | White pulsing          | Factory resetting or firmware update  |
+|                                                        | Color                  | Lamp mode                                        |
+|--------------------------------------------------------|------------------------|--------------------------------------------------|
+| <img src="indicators/dot-blue-pulse.svg" width='12'>   | Blue pulsing           | Bluetooth pairing mode                           |
+| <img src="indicators/dot-blue.svg" width='12'>         | Blue solid             | Bluetooth connected                              |
+| <img src="indicators/dot-amber-pulse.svg" width='12'>  | Amber pulsing          | Connecting to wifi                               |
+| <img src="indicators/dot-amber.svg" width='12'>        | Amber solid            | Connected to wifi                                |
+| <img src="indicators/dot-green-pulse.svg" width='12'>  | Green pulsing          | Connecting to server                             |
+| <img src="indicators/dot-green.svg" width='12'>        | Green solid            | Successfully set up                              |
+| <img src="indicators/dot-red.svg" width='12'>          | Red solid              | Error                                            |
+| <img src="indicators/dot-white-pulse.svg" width='12'>  | White pulsing          | Factory resetting or installing firmware update  |
 
 
 

micro/app/ota/ota_updater.py

@@ -1,5 +1,6 @@
 import os, gc
 from .httpclient import HttpClient
+from app.led import pulse, set_gradient, get_color_gradient, rgb_to_hue
 
 class OTAUpdater:
     """
@@ -77,6 +78,10 @@ def install_update_if_available(self) -> bool:
         (current_version, latest_version) = self._check_for_new_version()
         if latest_version > current_version:
             print('Updating to version {}...'.format(latest_version))
+            hue = rgb_to_hue(255, 255, 255)
+            set_gradient(get_color_gradient(223))
+            pulse()
+        
             self._create_new_version_file(latest_version)
             self._download_new_version(latest_version)
             self._copy_secrets_file()