bayodesegun

<launch>
    <arg name="topic_name" default="/test_topic" />
    <arg name="message" default="Hello there!" />
    <node pkg="rostopic" type="rostopic" name="rostopic_pub_node" output="screen" args="pub $(arg topic_name) std_msgs/String 'data: $(arg message)'" />
    <node pkg="rostopic" type="rostopic" name="rostopic_echo_node" output="screen" args="echo $(arg topic_name)" />
</launch>

bayodesegun

#! /usr/bin/env python
# remember to make this file executable (`chmod +x`) before trying to run it

import rospy
from std_srvs.srv import Trigger, TriggerResponse

def trigger_response(request):
    return TriggerResponse(
        success=True,
        message="Hey, roger that; we'll be right there!"

bayodesegun

#! /usr/bin/env python
# remember to make this file executable (`chmod +x`) before trying to run it
import rospy
from std_srvs.srv import Trigger, TriggerResponse

def trigger_response(request):
    return TriggerResponse(
        success=True,
        message="Hey, roger that; we'll be right there!"
    )