Emilio's profile - activity

Hi all!!

I would like to execute the rosrun command on my laptop and showing the turtlesim window on a external HDMI display by default, but I don't know how to do it. Is there any archive where I have to change the code for doing that?

I say the turtlesim as an example, I want to do the same in my project.

Thank you.

Use an external HDMI display to show the output Hi all!! I would like to execute the rosrun command on my laptop and sh

i remove it when i copied the code here but in the real code it is.

Hi all!!

I try to create a .msg files to send a value to a program. I follow the tutorials to create the msg file and .msg files, but when i run ' catkin_make' i get the following error:

[ 86%] Built target uno_CORE

[ 91%] Built target uno_Servo

Scanning dependencies of target move

[ 95%] Building CXX object CMakeFiles/move.dir/move.cpp.obj

In file included from /home/emilio/catkin_ws/src/emilio_arduino/firmware/move.cpp:12:0:
/home/emilio/catkin_ws/devel/include/emilio_arduino/Num.h:9:18: fatal error: string: No existe el archivo o el directorio
 #include <string>

compilation terminated.

make[6]: *** [CMakeFiles/move.dir/move.cpp.obj] Error 1

make[5]: *** [CMakeFiles/move.dir/all] Error 2

make[4]: *** [CMakeFiles/move.dir/rule] Error 2

make[3]: *** [move] Error 2

make[2]: *** [emilio_arduino/CMakeFiles/emilio_arduino_firmware_move] Error 2

make[1]: *** [emilio_arduino/CMakeFiles/emilio_arduino_firmware_move.dir/all] Error 2

make: *** [all] Error 2

Invoking "make -j2 -l2" failed

emilio@emilio-N61Vg:~/catkin_ws$ roscd emilio_arduino/

FIRST EDIT

The first opening < i remove by accident. I am using Indigo distro to control servos using an Arduino board.

The message file is:

    Num.msg
    int64 a

And the CmakeLists.txt is:

cmake_minimum_required(VERSION 2.8.3)
project(emilio_arduino)
find_package(catkin REQUIRED COMPONENTS
  rosserial_arduino
  rosserial_client
  std_msgs
  message_generation
  sensor_msgs
  geometry_msgs
)

add_message_files(
   FILES
   Num.msg
   Num1.msg
 )

 generate_messages(
   DEPENDENCIES
   std_msgs
   sensor_msgs
   geometry_msgs
 )


catkin_package(
CATKIN_DEPENDS rosserial_arduino rosserial_client std_msgs message_runtime sensor_msgs geometry_msgs
)

rosserial_generate_ros_lib(
  PACKAGE rosserial_arduino
  SCRIPT make_libraries.py
)

rosserial_configure_client(
     DIRECTORY firmware 
     TOOLCHAIN_FILE ${ROSSERIAL_ARDUINO_TOOLCHAIN}
)

rosserial_add_client_target(firmware move ALL)

rosserial_add_client_target(firmware move-upload)

include_directories(
  ${catkin_INCLUDE_DIRS}
)

Thanks if somebody know what is happening.

Hi all!

When i run rosrun rosserial_pyton serial_node.py /dev/ttyACM0 in a terminal it works well, but when i run rostopic pub in other terminal window i get the following error:

emilio@emilio-N61Vg:~/catkin_ws$ rosrun rosserial_python serial_node.py /dev/ttyACM0

[INFO] [WallTime: 1440066369.914559] ROS Serial Python Node

[INFO] [WallTime: 1440066369.920107] Connecting to /dev/ttyACM0 at 57600 baud

[INFO] [WallTime: 1440066372.763812] Note: publish buffer size is 280 bytes

[INFO] [WallTime: 1440066372.764439] Setup publisher on angulo [geometry_msgs/Vector3]

[INFO] [WallTime: 1440066372.769408] Note: subscribe buffer size is 280 bytes

[INFO] [WallTime: 1440066372.769842] Setup subscriber on posicion [geometry_msgs/Point]

[INFO] [WallTime: 1440066372.774876] Setup subscriber on modo [geometry_msgs/Vector3]

[WARN] [WallTime: 1440066399.909818] Serial Port read returned short (expected 24 bytes, received 0 instead).

[WARN] [WallTime: 1440066399.910426] Serial Port read failure:

[INFO] [WallTime: 1440066399.911157] Packet Failed : Failed to read msg data

[INFO] [WallTime: 1440066399.911781] msg len is 24

[INFO] [WallTime: 1440066399.947560] Setup publisher on angulo [geometry_msgs/Vector3]

[WARN] [WallTime: 1440066404.668613] Serial Port read returned short (expected 24 bytes, received 21 instead).

[WARN] [WallTime: 1440066404.669382] Serial Port read failure:

[INFO] [WallTime: 1440066404.670133] Packet Failed : Failed to read msg data

[INFO] [WallTime: 1440066404.670843] msg len is 24

Traceback (most recent call last):

File "/opt/ros/indigo/lib/rosserial_python/serial_node.py", line 82, in <module> client.run()

File "/opt/ros/indigo/lib/python2.7/dist-packages/rosserial_python/SerialClient.py", line 495, in run self.requestTopics()

File "/opt/ros/indigo/lib/python2.7/dist-packages/rosserial_python/SerialClient.py", line 392, in requestTopics self.port.flushInput()

File "/usr/lib/python2.7/dist-packages/serial/serialposix.py", line 500, in flushInput termios.tcflush(self.fd, TERMIOS.TCIFLUSH)

termios.error: (5, 'Input/output error')

emilio@emilio-N61Vg:~/catkin_ws$

Thanks if anyone know what is the problem.

I'm sorry, i make mistake copying the code.

Hi all!!

I want to make a function that has two vectors as arguments like this:

geometry_msgs::Point point; geoemtry_msgs::Point posac; geoemtry_msgs::Point suma;

void make_suma ( const geometry_msgs::Point& point, const geometry_msgs::Point& posac)

{

suma.x=point.x + posac.x;

suma.y=point.y + posac.y;

suma.z=point.z + posac.z;

}

I get the following error when i compile it.

/home/usuario/catkin_ws/src/prueba/firmware/p1.cpp:33:60: error: invalid conversion from ‘void ()(const geometry_msgs::Point&, const geometry_msgs::Point&)’ to ‘ros::Subscriber<geometry_msgs::point>::CallbackT {aka void ()(const geometry_msgs::Point&)}’ [-fpermissive]

ros::Subscriber<geometry_msgs::point> sub("operacion", make_suma);

In file included from /home/usuario/catkin_ws/build/prueba/ros_lib/ros/node_handle.h:84:0,

from /home/usuario/catkin_ws/build/prueba/ros_lib/ros.h:38,

from /home/usuario/catkin_ws/src/prueba/firmware/p1.cpp:8:

/home/usuario/catkin_ws/build/prueba/ros_lib/ros/subscriber.h:65:7: error: initializing argument 2 of ‘ros::Subscriber<msgt>::Subscriber(const char, ros::Subscriber<msgt>::CallbackT, int) [with MsgT = geometry_msgs::Point; ros::Subscriber<msgt>::CallbackT = void ()(const geometry_msgs::Point&)]’ [-fpermissive]

Subscriber(const char * topic_name, CallbackT cb, int endpoint=rosserial_msgs::TopicInfo::ID_SUBSCRIBER) :

make[7]: * [CMakeFiles/p1.dir/p1.cpp.obj] Error 1

make[6]: * [CMakeFiles/p1.dir/all] Error 2

make[5]: * [CMakeFiles/p1.dir/rule] Error 2

make[4]: * [p1] Error 2

make[3]: * [prueba/CMakeFiles/prueba_firmware_p1] Error 2

make[2]: * [prueba/CMakeFiles/prueba_firmware_p1.dir/all] Error 2

make[1]: * [prueba/CMakeFiles/prueba_firmware_p1.dir/rule] Error 2

make: * [prueba_firmware_p1] Error 2

Invoking "make prueba_firmware_p1 -j4 -l4" failed

Adolfo Rodriguez T i write here because i can write more text.

So I write in void function to turn on/off a blink each time i run a rostopic pub to check if when i run rostopic pub the program enter in void function. when i pub to two servos the blink state change, but when i pub to three servos blink doesn't change, so i think the problem can be this.

void servo_cb( const sensor_msgs::JointState &giro)

{

digitalWrite(13, HIGH-digitalRead(13));

servo.write((int)giro.position[0]);

servo1.write((int)giro.position[1]);

servo2.write((int)giro.position[2]);

}

I write in void setup:

unsigned num=giro.name.size(); giro.position.resize(n); giro.velo.. giro.eff..

I get the following error

emilio_arduino/firmware/move.cpp:50:16: error: request for member ‘size’ in‘giro.sensor_msgs::JointState::name’, which is of non-class type ‘char**’ num=giro.name.size()

If i use geometry_msgs/Vector3 instead of sensor_msgs/JointState to send the position to three servos with the same code changing the struct to Vector3 type, they work well so i think servos are not the problem and i don't know why with one type of message they work and they don't with other type.

Yes, I change the pins on the board but always work well using two servos.I think the problem is related to any third servo.When i run rostopic command in a terminal i don't get any error but servos don't work. I`m new user ROS so i don't know where can be the problem.

Hi !!

I try to control three servos in an Arduino board using sensor_msgs/JointState to send the position. I write this code for two servos and they work well, but when i include one more servo.write into the void function i don't get any error and the compilation is right but they don't work and i don't know what is wrong.

ros::NodeHandle nh;

sensor_msgs::JointState giro;

Servo servo,servo1,servo2;

void servo_cb( const sensor_msgs::JointState &giro)

{

servo.write((int)giro.position[0]);

servo1.write((int)giro.position[1]);

servo2.write((int)giro.position[2]);

}

Please replay if you know, i need help with the final project of my career. THANKS!! ;)

ros::Subscriber<sensor_msgs::jointstate> sub("servo", servo_cb);

void setup()

{

pinMode(13, OUTPUT);

nh.initNode();

nh.subscribe(sub);

servo2.attach(11);

servo.attach(9);

servo1.attach(8);

}

void loop() {

nh.spinOnce();

delay(1);

}

Sorry i just edit the post ! when i upload the code in the board and run rostopic pub i don't get any error message so i think that all is ok but servos don't move to the position i indicate in the position array in the command.

I want to control some servos using sensor_msgs/JointState on Arduino UNO. I'm using Indigo. I write this code called move.cpp that i upload in the board.

ros::NodeHandle nh;

sensor_msgs::JointState giro;

Servo servo,servo1,servo2;

void servo_cb( const sensor_msgs::JointState &giro)

{

servo.write((int)giro.position[0]);

servo1.write((int)giro.position[1]);

servo2.write((int)giro.position[2]);

}

ros::Subscriber<sensor_msgs::jointstate> sub("servo", servo_cb);

void setup()

{

pinMode(13, OUTPUT);

nh.initNode();

nh.subscribe(sub);

servo2.attach(11);

servo.attach(9);

servo1.attach(8);

}

void loop() {

nh.spinOnce();

delay(1);

}

If i try to control two servos with the same code without one of then servo.write that works well, But when i try it with three servos they don't work and any error occurs. Someone know what can be the problem?

Thanks

Hi !

I run this command line:

rostopic pub servo sensor_msgs/JointState '{header: {seq:0, stamp: {secs:0, nsecs:0}, frame_id:""}, name:["art1"],position:[150.0], velocity:[0.0], effort:[0.0]}' --once

and i get the following error:


emilio@emilio-N61Vg:~/catkin_ws$ rostopic pub servo sensor_msgs/JointState '{header: {seq:0, stamp: {secs:0, nsecs:0}, frame_id:""}, name:["art1"],position:[150.0], velocity:[0.0], effort:[0.0]}' --once

Usage: rostopic pub /topic type [args...]

rostopic: error: Argument error: while scanning a plain scalar

  in "<string>", line 1, column 11:

    {header: {seq:0, stamp: {secs:0, nsecs:0}, ... 
              ^

found unexpected ':'

  in "<string>", line 1, column 14:

    {header: {seq:0, stamp: {secs:0, nsecs:0}, fr ... 
                 ^

Please check http://pyyaml.org/wiki/YAMLColonInFlowContext for details.