servo controller publisher

Question

hi, i create a subscribe sevo controller like this tutorial wiki/rosserial_arduino/Tutorials/Servo Controller and i want to create a publisher on my PC. i try with this code, but it doesnt work. could you help me please?

  int main(int argc, char **argv)
    {
        ros::init(argc, argv, "servo_publisher");
        ros::NodeHandle n;
        ros::Publisher servo_pub = n.advertise<std_msgs::UInt16>("servo", 1000);
        ros::Rate loop_rate(10);
        int count = 0;
        while(ros::ok())
        {
            std_msgs::UInt16 cmd_msg;
            cmd_msg.data = 10;
            ROS_INFO("%i",cmd_msg.data);
            servo_pub.publish(cmd_msg);
            ros::spin();
            loop_rate.sleep();
            ++count;
        }
        return 0;
    }

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Originally posted by Emilien on ROS Answers with karma: 167 on 2016-05-03

Post score: 0

Answer 1

This should be a ros::spinOnce(); instead of ros::spin();

ros::spin() is spinning continuously and thus you should only receive the very first message.

Check out the wiki for more info.

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Originally posted by mgruhler with karma: 12390 on 2016-05-04

This answer was ACCEPTED on the original site

Post score: 1

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Original comments

Comment by Emilien on 2016-05-04:
thank you very much