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swarm(Line).py
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swarm(Line).py
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from __future__ import print_function
from dronekit import connect, VehicleMode, LocationGlobalRelative, LocationGlobal, Command
import time
import math
from pymavlink import mavutil
connection_string_one = 'udp:127.0.0.1:14553'
connection_string_two = 'udp:127.0.0.1:14554'
connection_string_three = 'udp:127.0.0.1:14555'
sitl = None
# Connect to the Vehicle
print('Connecting to first vehicle on: %s' % connection_string_one)
vehicle1 = connect(connection_string_one, wait_ready=True)
print('Connecting to second vehicle on: %s' % connection_string_two)
vehicle2 = connect(connection_string_two, wait_ready=True)
# print('Connecting to third vehicle on: %s' % connection_string_three)
# vehicle3 = connect(connection_string_three, wait_ready=True)
def get_location_metres(original_location, dNorth, dEast, alt):
earth_radius=6378137.0 #Radius of "spherical" earth
#Coordinate offsets in radians
dLat = dNorth/earth_radius
dLon = dEast/(earth_radius*math.cos(math.pi*original_location.lat/180))
#New position in decimal degrees
newlat = original_location.lat + (dLat * 180/math.pi)
newlon = original_location.lon + (dLon * 180/math.pi)
return LocationGlobal(newlat, newlon, alt)
aSize = 40
print('========= Defining points ==========')
theta = math.pi/3
home = get_location_metres(vehicle1.location.global_frame, 0, 0, 10)
pt1 = get_location_metres(vehicle1.location.global_frame, 0, aSize, 10)
pt2 = get_location_metres(vehicle1.location.global_frame, (aSize*(math.sin(theta))), aSize/2, 10)
print('===== Defining points completed ====')
def add_mission():
cmds_1 = vehicle1.commands
print(" Clear any existing commands")
cmds_1.clear()
print(" Define/add new commands.")
# Add new commands. The meaning/order of the parameters is documented in the Command class.
#Add MAV_CMD_NAV_TAKEOFF command. This is ignored if the vehicle is already in the air.
cmds_1.add(Command( 0, 0, 0, mavutil.mavlink.MAV_FRAME_GLOBAL_RELATIVE_ALT, mavutil.mavlink.MAV_CMD_NAV_TAKEOFF, 0, 0, 0, 0, 0, 0, 0, 0, 10))
for i in point1 :
cmds_1.add(Command( 0, 0, 0, mavutil.mavlink.MAV_FRAME_GLOBAL_RELATIVE_ALT, mavutil.mavlink.MAV_CMD_NAV_WAYPOINT, 0, 0, 0, 0, 0, 0, i.lat, i.lon, 1))
for i in point2 :
cmds_1.add(Command( 0, 0, 0, mavutil.mavlink.MAV_FRAME_GLOBAL_RELATIVE_ALT, mavutil.mavlink.MAV_CMD_NAV_WAYPOINT, 0, 0, 0, 0, 0, 0, i.lat, i.lon, 1))
print(" Upload new commands to vehicle")
cmds_1.upload()
cmds_2 = vehicle2.commands
print(" Clear any existing commands")
cmds_2.clear()
print(" Define/add new commands.")
# Add new commands. The meaning/order of the parameters is documented in the Command class.
#Add MAV_CMD_NAV_TAKEOFF command. This is ignored if the vehicle is already in the air.
cmds_2.add(Command( 0, 0, 0, mavutil.mavlink.MAV_FRAME_GLOBAL_RELATIVE_ALT, mavutil.mavlink.MAV_CMD_NAV_TAKEOFF, 0, 0, 0, 0, 0, 0, 0, 0, 10))
for i in point1 :
cmds_2.add(Command( 0, 0, 0, mavutil.mavlink.MAV_FRAME_GLOBAL_RELATIVE_ALT, mavutil.mavlink.MAV_CMD_NAV_WAYPOINT, 0, 0, 0, 0, 0, 0, i.lat, i.lon, 1))
for i in point2 :
cmds_2.add(Command( 0, 0, 0, mavutil.mavlink.MAV_FRAME_GLOBAL_RELATIVE_ALT, mavutil.mavlink.MAV_CMD_NAV_WAYPOINT, 0, 0, 0, 0, 0, 0, i.lat, i.lon, 1))
print(" Upload new commands to vehicle")
cmds_2.upload()
time.sleep(5)
def arm_and_takeoff(aTargetAltitude, vehicle):
print("Basic pre-arm checks")
while not vehicle.is_armable:
print(" Waiting for vehicle to initialise...")
time.sleep(1)
print("Arming motors")
vehicle.mode = VehicleMode("GUIDED")
vehicle.armed = True
while not vehicle.armed:
print(" Waiting for arming...")
time.sleep(1)
print("Taking off!")
vehicle.simple_takeoff(aTargetAltitude)
while True:
print(" Altitude: ", vehicle.location.global_relative_frame.alt)
if vehicle.location.global_relative_frame.alt>=aTargetAltitude*0.95: #Trigger just below target alt.
print("Reached target altitude")
break
time.sleep(1)
print('Create a new mission (for current location)')
# add_mission()
arm_and_takeoff(10, vehicle2)
vehicle2.simple_goto(get_location_metres(vehicle1.location.global_frame, 20, 0, 10), groundspeed=20)
time.sleep(15)
arm_and_takeoff(10, vehicle1)
vehicle1.simple_goto(pt1, groundspeed=10)
for i in range(8) :
p = get_location_metres(vehicle1.location.global_relative_frame, 20, 0, 10)
vehicle2.simple_goto(p, groundspeed=20)
time.sleep(2)
# arm_and_takeoff(10, vehicle2)
print('Return to launch')
vehicle1.simple_goto(home, groundspeed=10)
vehicle2.simple_goto(home, groundspeed=10)
time.sleep(20)
#Close vehicle object before exiting script
print("Close vehicle object")
vehicle1.close()
vehicle2.close()
# vehicle3.close()