update protobuf, introduce homescreen

tests/test_msg_applysettings.py

@@ -62,5 +62,15 @@ class TestMsgApplysettings(common.TrezorTest):
 
         self.assertEqual(self.client.features.passphrase_protection, True)
 
+    def test_apply_homescreen(self):
+        self.setup_mnemonic_pin_passphrase()
+
+        with self.client:
+            self.client.set_expected_responses([proto.ButtonRequest(),
+                                                proto.PinMatrixRequest(),
+                                                proto.Success(),
+                                                proto.Features()])
+            self.client.apply_settings(homescreen=1024*'\xf0')
+
 if __name__ == '__main__':
     unittest.main()

trezorlib/client.py

@@ -417,7 +417,7 @@ class ProtocolMixin(object):
 
     @field('message')
     @expect(proto.Success)
-    def apply_settings(self, label=None, language=None, use_passphrase=None):
+    def apply_settings(self, label=None, language=None, use_passphrase=None, homescreen=None):
         settings = proto.ApplySettings()
         if label != None:
             settings.label = label
@@ -425,6 +425,8 @@ class ProtocolMixin(object):
             settings.language = language
         if use_passphrase != None:
             settings.use_passphrase = use_passphrase
+        if homescreen != None:
+            settings.homescreen = homescreen
 
         out = self.call(settings)
         self.init_device()  # Reload Features