通过mavros实现无人机航点飞行（mission模式）示例代码

通过mavros实现无人机航点飞行（mission模式）示例代码

通过 mavros/mission/push 这个服务进行航点上传 

Mavros-AUTO.MISSION-mode: This script will activate AUTO.MISSION mode along with pushing waypoints to be followed by the drone while PX4 gazebo simulation wrapped with mavros running for VTOL quad-plane. - Gitee.com

wayPointMission.py

#!/usr/bin/env python
# ROS python API
import rospy
 
# 3D point & Stamped Pose msgs
from geometry_msgs.msg import Point, PoseStamped
# import all mavros messages and services
from mavros_msgs.msg import *
from mavros_msgs.srv import *
 
 
class Modes:
    def __init__(self):
        pass
 
    def setArm(self):
        rospy.wait_for_service('mavros/cmd/arming')
        try:
            armService = rospy.ServiceProxy('mavros/cmd/arming', mavros_msgs.srv.CommandBool)
            armService(True)
        except rospy.ServiceException, e:
            print "Service arming call failed: %s"%e
 
    def auto_set_mode(self):
        rospy.wait_for_service('mavros/set_mode')
        try:
            # setModeService = rospy.ServiceProxy('mavros/set_mode', mavros_msgs.srv.set_mode.request.custom_mode)
            setModeService = rospy.ServiceProxy('mavros/set_mode', mavros_msgs.srv.SetMode)
            setModeService(custom_mode="AUTO.MISSION")
        except rospy.ServiceException, e:
            print "Service takeoff call failed: %s"%e
 
    def wpPush(self,index,wps):
        rospy.wait_for_service('mavros/mission/push')
        try:
            wpPushService = rospy.ServiceProxy('mavros/mission/push', WaypointPush,persistent=True)
            wpPushService(start_index=0,waypoints=wps)#start_index = the index at which we want the mission to start
            print "Waypoint Pushed"
        except rospy.ServiceException, e:
            print "Service takeoff call failed: %s"%e
    def wpPull(self,wps):
        rospy.wait_for_service('mavros/mission/pull')
        try:
            wpPullService = rospy.ServiceProxy('mavros/mission/pull', WaypointPull,persistent=True)
            print wpPullService().wp_received
 
            print "Waypoint Pulled"
        except rospy.ServiceException, e:
            print "Service Puling call failed: %s"%e
 
class stateMoniter:
    def __init__(self):
        self.state = State()
        # Instantiate a setpoints message
        self.sp = PositionTarget()
 
        # set the flag to use position setpoints and yaw angle
        self.sp.type_mask = int('010111111000', 2)
        
    def stateCb(self, msg):
        self.state = msg
 
class wpMissionCnt:
 
    def __init__(self):
        self.wp =Waypoint()
        
    def setWaypoints(self,frame,command,is_current,autocontinue,param1,param2,param3,param4,x_lat,y_long,z_alt):
        self.wp.frame =frame #  FRAME_GLOBAL_REL_ALT = 3 for more visit http://docs.ros.org/api/mavros_msgs/html/msg/Waypoint.html
        self.wp.command = command '''VTOL TAKEOFF = 84,NAV_WAYPOINT = 16, TAKE_OFF=22 for checking out other parameters go to https://github.com/mavlink/mavros/blob/master/mavros_msgs/msg/CommandCode.msg'''
        self.wp.is_current= is_current
        self.wp.autocontinue = autocontinue # enable taking and following upcoming waypoints automatically 
        self.wp.param1=param1 # no idea what these are for but the script will work so go ahead
        self.wp.param2=param2
        self.wp.param3=param3
        self.wp.param4=param4
        self.wp.x_lat= x_lat 
        self.wp.y_long=y_long
        self.wp.z_alt= z_alt #relative altitude.
 
        return self.wp
 
 
def main():
    rospy.init_node('waypointMission', anonymous=True)
    rate = rospy.Rate(20.0)
 
    stateMt = stateMoniter()
    md = Modes()
    
    wayp0 = wpMissionCnt()
    wayp1 = wpMissionCnt()
    wayp2 = wpMissionCnt()
    wayp3 = wpMissionCnt()
    
    wps = [] #List to story waypoints
    
    w = wayp0.setWaypoints(3,84,True,True,0.0,0.0,0.0,float('nan'),47.397713,8.547605,50)
    wps.append(w)
 
    w = wayp1.setWaypoints(3,16,False,True,0.0,0.0,0.0,float('nan'),47.398621,8.547745,50)
    wps.append(w)
 
    w = wayp2.setWaypoints(3,16,False,True,0.0,0.0,0.0,float('nan'),47.399151,8.545320,50)
    wps.append(w)
 
    print wps
    md.wpPush(0,wps)
 
    md.wpPull(0)
    rospy.Subscriber("/mavros/state",State, stateMt.stateCb)
 
    # Arming the drone
    while not stateMt.state.armed:
        md.setArm()
        rate.sleep()
    # Switching the state to auto mode
    while not stateMt.state.mode=="AUTO.MISSION":
        md.auto_set_mode()
        rate.sleep()
        print "AUTO.MISSION"
 
    # rospy.spin()
 
 
if __name__ == '__main__':
    try:
        main()
    except rospy.ROSInterruptException:
        pass