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sitlGUIDED.py
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sitlGUIDED.py
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# -*- coding: utf-8 -*-
from __future__ import print_function
import time
from dronekit import connect, VehicleMode, LocationGlobalRelative
import dronekit_sitl
sitl = dronekit_sitl.start_default() #dronekit-sitl'i default ayarlarda baslattik.
"""
Dronekit-sitl'i bu şekilde calistirdigimizda arastirmalarıma ve anladigima gore (yani kesin degil), mavproxy ile bağlantı dagitmamiz mümkün olmuyor ve yer istasyonunu dronekit-sitl'in
bize sundugu diger tcp portlari olan 5761-2-3 portlarindan bagliyoruz.
"""
print("Connecting to vehicle on: %s" % ('tcp:127.0.0.1:5760',))
vehicle = connect('tcp:127.0.0.1:5760', wait_ready=True) #sitl'e baglan
def arm():
while vehicle.is_armable == 0:
print ("Armlanmaya hazir degiliz.")
time.sleep(1)
print ("Drone armlaniyor...")
"""
Aslında Auto olarak armlamamız ve pre-defined gorevi yaptırmamız gerek ancak suan elimizde gercek bir drone bile olmadigi icin GUIDED modda denemeler yapabiliriz.
GUIDED mod aciklamasi : Navigates to single points commanded by GCS
Diger ucus modlari hakkinda bilgi : http://ardupilot.org/copter/docs/flight-modes.html
"""
vehicle.mode = VehicleMode("GUIDED")
vehicle.armed = True
while vehicle.armed == False:
print("Armlaniyor...")
time.sleep(1)
print ("Drone arm : ",vehicle.armed)
arm() #Armlanma fonksiyonunu calistirdik.
"""
simple_takeoff'da vehicle gibi dronekit-python'dan geliyor. Kaynak kodları dronekit-python
__init__.py dosyasında bulunabilir. Droneki'tin ana kaynak kodu bu dosyadir.
"""
def takeoff(alt):
"""
Kaynak koddaki aciklama, asagdaki while dongusunu neden kullandigimi acikliyor.
Take off and fly the vehicle to the specified altitude (in metres) and then wait for another command.
.. note::
This function should only be used on Copter vehicles.
The vehicle must be in GUIDED mode and armed before this is called.
!!!! Buraya dikkat. There is no mechanism for notification when the correct altitude is reached,
and if another command arrives before that point (e.g. :py:func:`simple_goto`) it will be run instead.!!!
.. warning::
Apps should code to ensure that the vehicle will reach a safe altitude before
other commands are executed. A good example is provided in the guide topic :doc:`guide/taking_off`.
:param alt: Target height, in metres.
"""
vehicle.simple_takeoff(alt) #alt metreye droneu kaldir.
while True:
print("Yukseklik :", vehicle.location.global_relative_frame.alt)
if vehicle.location.global_relative_frame.alt >= alt*0.95: #0,95 ile carptik cunku net veri alamayiz ve drone direkt yukseklikte duramaz.
print("Hedef yukseklige ulasildi.")
break #while true dongusunu yukseklige ulastigimiz icin bozuyoruz yoksa sonsuza dek devam eder
time.sleep(1)
takeoff(10) #10metreye kalk
"""
Yukarida bahsettigim olay, GUIDED modda sadece tek tek waypoint (hedef nokta) verip, droneye oraya gitmesini soyleyebiliriz.
"""
waypoint1 = LocationGlobalRelative(-35.3621,149.167,10) #Rastgele bir yer verdim.
"""
simple_goto, drone'a su mavlik mesajini gonderir : mavutil.mavlink.MAV_CMD_NAV_WAYPOINT
Diger mavlink mesajlari ve esktra bilgi icin bkz : http://ardupilot.org/copter/docs/common-mavlink-mission-command-messages-mav_cmd.html
simple_goto'nun da dronekit komutu oldugunu soylemistim, kaynak kodda yazan aciklama
her seyi anlatiyor :
Go to a specified global location (:py:class:`LocationGlobal` or :py:class:`LocationGlobalRelative`).
!!!!DIKKAT!!!There is no mechanism for notification when the target location is reached, and if another command arrives
before that point that will be executed immediately.
You can optionally set the desired airspeed or groundspeed (this is identical to setting
:py:attr:`airspeed` or :py:attr:`groundspeed`). The vehicle will determine what speed to
use if the values are not set or if they are both set.
The method will change the :py:class:`VehicleMode` to ``GUIDED`` if necessary.
.. code:: python
# Set mode to guided - this is optional as the simple_goto method will change the mode if needed.
vehicle.mode = VehicleMode("GUIDED")
# Set the LocationGlobal to head towards
a_location = LocationGlobal(-34.364114, 149.166022, 30)
vehicle.simple_goto(a_location)
:param location: The target location (:py:class:`LocationGlobal` or :py:class:`LocationGlobalRelative`).
:param airspeed: Target airspeed in m/s (optional).
:param groundspeed: Target groundspeed in m/s (optional).
"""
def get_distance_metres(aLocation1, aLocation2):
"""
Returns the ground distance in metres between two Location objects.
This method is an approximation, and will not be accurate over large distances and close to the
earth's poles. It comes from the ArduPilot test code:
https://github.com/diydrones/ardupilot/blob/master/Tools/autotest/common.py
"""
dlat = aLocation2.lat - aLocation1.lat
dlong = aLocation2.lon - aLocation1.lon
return math.sqrt((dlat*dlat) + (dlong*dlong)) * 1.113195e5
baslangicUzaklik = get_distance_metres(vehicle.location.global_relative_frame,waypoint1)
print("Hedefe uzaklik (baslangic) : ",baslangicUzaklik)
vehicle.simple_goto(waypoint1)
while True:
print("Hedeften uzaklik :",get_distance_metres(vehicle.location,waypoint1)
if get_distance_metres(vehicle.location.global_relative_frame,waypoint1) >= 1 :
print("Hedefe ulasildi.")
break #while true dongusunu hedefe ulastigimiz icin bozuyoruz.
time.sleep(1)