companion/app.py

@@ -61,6 +61,9 @@ class MynitCompanionApp(App):
 
         self.widget.update_device_buttons(buttons_map)
 
+    def handle_data(self, data):
+        Logger.info("Handling received data: %s" % data)
+
     def build(self):
         self.widget = DeviceListWidget()
         return self.widget

companion/bluetooth.py

@@ -38,6 +38,7 @@ class MynitBluetooth(BluetoothDispatcher):
 
     def on_scan_completed(self):
         if self._device:
+            # FIXME Add retries
             self.connect_gatt(self._device)
 
     def on_connection_state_change(self, status, state):
@@ -56,3 +57,9 @@ class MynitBluetooth(BluetoothDispatcher):
     def on_services(self, status, services):
         Logger.info("Services discovered")
         self._characteristics = (services.search(_UART_SERVICE_TX_UUID), services.search(_UART_SERVICE_RX_UUID))
+        self.enable_notifications(self._characteristics[1])
+
+    def on_characteristic_changed(self, characteristic):
+        Logger.info("Data received")
+        data = characteristic.getStringValue(0)
+        self._app.handle_data(data)