Add FTP examples

examples/ftp_download_file.py

@@ -0,0 +1,26 @@
+#!/usr/bin/env python3
+
+import asyncio
+from mavsdk import System
+
+
+async def run():
+
+    drone = System(mavsdk_server_address="localhost", port=50051)
+    await drone.connect(system_address="serial:///dev/ttyACM0:57600")
+
+    print("Waiting for drone to connect...")
+    async for state in drone.core.connection_state():
+        if state.is_connected:
+            print(f"-- Connected to drone!")
+            break
+
+    async for update in drone.ftp.download(
+        "/etc/extras/px4_io-v2_default.bin", ".", use_burst=False
+    ):
+        print(f"Got {update.bytes_transferred} of {update.total_bytes} bytes")
+
+
+if __name__ == "__main__":
+    # Run the asyncio loop
+    asyncio.run(run())

examples/ftp_list_dir.py

@@ -0,0 +1,23 @@
+#!/usr/bin/env python3
+
+import asyncio
+from mavsdk import System
+
+
+async def run():
+
+    drone = System(mavsdk_server_address='localhost', port=50051)
+    await drone.connect(system_address="serial:///dev/ttyACM0:57600")
+
+    print("Waiting for drone to connect...")
+    async for state in drone.core.connection_state():
+        if state.is_connected:
+            print(f"-- Connected to drone!")
+            break
+
+    print("directory list", await drone.ftp.list_directory("/"))
+
+
+if __name__ == "__main__":
+    # Run the asyncio loop
+    asyncio.run(run())