Merge pull request #427 from potaito/potaito/failure-injection-example

Failure injection example script

Author: julianoes

examples/failure_injection.py

@@ -0,0 +1,63 @@
+#!/usr/bin/env python3
+
+import asyncio
+
+from mavsdk import System
+from mavsdk.failure import FailureType, FailureUnit
+
+async def run():
+    drone = System()
+    await drone.connect(system_address="udp://:14540")
+
+    print("Waiting for drone to connect...")
+    async for state in drone.core.connection_state():
+        if state.is_connected:
+            print(f"Drone discovered with UUID: {state.uuid}")
+            break
+
+    print("Waiting for drone to have a global position estimate...")
+    async for health in drone.telemetry.health():
+        if health.is_global_position_ok and health.is_home_position_ok:
+            print("Global position estimate ok")
+            break
+
+    print("-- Enabling failure injection")
+    await drone.param.set_param_int('SYS_FAILURE_EN', 1)
+
+    print("-- Arming")
+    await drone.action.arm()
+
+    print("-- Taking off")
+    await drone.action.takeoff()
+
+    await asyncio.sleep(5)
+
+    goto_lat = 0.0
+    goto_lon = 0.0
+    goto_alt = 0.0
+    async for position in drone.telemetry.position():
+        # Only need position once
+        if position.latitude_deg and position.longitude_deg:
+            goto_lat = position.latitude_deg
+            goto_lon = position.longitude_deg
+            goto_alt = position.absolute_altitude_m
+            break
+
+    print("-- Flying up")
+    flying_alt = goto_alt + 20.0 # To fly drone 20m above the ground plane
+    await drone.action.goto_location(goto_lat, goto_lon, flying_alt, 0)
+
+    await asyncio.sleep(5)
+
+    print("-- Injecting GPS failure")
+    await drone.failure.inject(FailureUnit.SENSOR_GPS, FailureType.OFF, instance=0)
+
+    print("-- Waiting 20s before exiting script...")
+    await asyncio.sleep(20)
+
+    print("-- Disabling failure injection")
+    await drone.param.set_param_int('SYS_FAILURE_EN', 0)
+
+if __name__ == "__main__":
+    loop = asyncio.get_event_loop()
+    loop.run_until_complete(run())