On Wed, Feb 9, 2011 at 7:34 PM, Homer Manalo
<homer.manalo@roboteknik.com> wrote:
OK, I just compiled it successfully now.
Added these lines to String.cpp:
String::~String()
{}
Program: 14632 bytes (44.7% Full)
I didn't know this would go almost half-full just for a hello world.
-HomerOn Wed, Feb 9, 2011 at 7:09 PM, Homer Manalo
<homer.manalo@roboteknik.com> wrote:
I found the culprit with the error: ‘string’ in namespace ‘ROS’ does not name a type.
The ros_string.h has the ff. lines:
#ifndef STRING_H_
#define STRING_H_
Should be:
#ifndef ROS_STRING_H_
#define ROS_STRING_H_
The filename on the top of the comment is string.h as well. It also solved the error: ‘class std_msgs::String’ has no member named ‘data’. It seems that this is also the reason for the previous error I got regarding std_msgs::String. I don't have to reorder the #include files anymore.
I,ve got a couple more errors this time:
char Ros::getTopicTag(char *topic) {
../avrRos/ros_generated.cpp:6: error: prototype for ‘char Ros::getTopicTag(char*)’ does not match any in class ‘Ros’
char getTopicTag(char const *topic);
../avrRos/Ros.h:132: error: candidate is: char Ros::getTopicTag(const char*)
I replaced the autogenerated ros_generated.cpp with this:
/* This file was autogenerated as a part of the avr_bridge pkg
* avr_bridge was written by Adam Stambler and Phillip Quiza of
* Rutgers University.
*/
#include "Ros.h"
#include "string.h" //added manually for strcmp
char Ros::getTopicTag(char const *topic) { //manually added const to resolve above errors
if (!strcmp(topic, "call"))
return 0;
if (!strcmp(topic, "response"))
return 1;
return 0; //manually added semicolon(;)
}
Ros ros("callResponse", 2);
I'm not sure if this is the right solution but the errors are gone now, except one. It's a make error, here is the console output:
**** Build of configuration Release for project avr_bridgeHelloWorld ****
make all
Building target: avr_bridgeHelloWorld.elf
Invoking: AVR C++ Linker
avr-gcc --cref -s -Os -o"avr_bridgeHelloWorld.elf" ./avrRos_user.o ./main.o ./avrRos/Ros.o ./avrRos/String.o ./avrRos/cc_support.o ./avrRos/ros_generated.o ./avrRos/ros_string.o -lArduinoProMini5VCore -lm -Wl,-Map,avr_bridgeHelloWorld.map,--cref -L/home/roboteknik/eclipse/ArduinoCores -mmcu=atmega328p
./main.o: In function `__static_initialization_and_destruction_0(int, int)':
main.cpp:(.text._Z41__static_initialization_and_destruction_0ii+0x2c): undefined reference to `std_msgs::String::~String()'
main.cpp:(.text._Z41__static_initialization_and_destruction_0ii+0x34): undefined reference to `std_msgs::String::~String()'
make: *** [avr_bridgeHelloWorld.elf] Error 1
I'm not sure how to solve this error.
On Wed, Feb 9, 2011 at 2:51 PM, Homer Manalo
<homer.manalo@roboteknik.com> wrote:
Ok now I have sorted out about the std_msgs error by ordering the #include lines and object declarations:
#include <WProgram.h>
#include <stdio.h>
#include "avrRos/String.h"
std_msgs::String call_msg;
std_msgs::String response_msg;
#include "avrRos/Ros.h"
But I still got some errors here:
sprintf(response_msg.data.getRawString(), "You sent : %s", call_msg.data.getRawString());
../main.cpp:35: error: ‘class std_msgs::String’ has no member named ‘data’
../main.cpp:35: error: ‘class std_msgs::String’ has no member named ‘data’
call_msg.data.setMaxLength(30);
response_msg.data.setMaxLength(60);
../main.cpp:50: error: ‘class std_msgs::String’ has no member named ‘data’
../main.cpp:51: error: ‘class std_msgs::String’ has no member named ‘data’
ROS::string data;
../avrRos/String.h:18: error: ‘string’ in namespace ‘ROS’ does not name a type
ROS::string name;
../avrRos/Ros.h:117: error: ‘string’ in namespace ‘ROS’ does not name a type
On Tue, Feb 8, 2011 at 4:41 PM, Homer Manalo
<homer.manalo@roboteknik.com> wrote:
Hello, I'm following the hello world tutorial and getting build errors particularly with these two lines:
std_msgs::String call_msg;
std_msgs::String response_msg;
../main.cpp:21: error: ‘std_msgs’ has not been declared
../main.cpp:21: error: expected constructor, destructor, or type conversion before ‘call_msg’
../main.cpp:22: error: ‘std_msgs’ has not been declared
../main.cpp:22: error: expected constructor, destructor, or type conversion before ‘response_msg’
Other errors are just because of the two variables not being declared.On Mon, Jan 10, 2011 at 4:10 AM, Adam Stambler
<adasta@gmail.com> wrote:
Hi
Configuring eclipse can be a bit tricky. This tutorial was the most straight forward explanation:
http://www.arduino.cc/playground/Code/Eclipse
If you are still having trouble, let me know and I will write up an explanation on the ROS site.
-AdamOn Sun, Jan 9, 2011 at 2:36 PM, airthimble
<joseph.st.amand@mines.sdsmt.edu> wrote:
I have been trying to use this package in order to communicate with a
Seeduino. I tried following the avr-bridge tutorial but had trouble with it.
I typically put together a make file for a project and just use a text
editor. I have no trouble using eclipse, I just cannot figure out how to
configure it. There does not seem to be a well-made tutorial for configuring
eclipse in Ubuntu 11.04.
If anyone would be able to give me a push in the right direction it would be
much appreciated!
Thanks!
--
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