[ros-users] AVR and ROS
Adam Stambler
adasta at gmail.com
Wed Feb 9 18:33:55 UTC 2011
Hi Homer,
Sorry about the trouble. One of our development branches got set as the
default when we changed our repo to use submodules.
I am in the middle of fixing it now, but in the mean time you should just
clone my personal repository.
git://github.com/adasta/rutgers-ros-pkg.git
I should have this fixed tonight.
As for the large size of the binary, yup that is correct. The arduino
libraries are pretty large and also the way I first coded the first bridge
was a bit memory sloppy. I should be releasing a slimmed down version soon.
-Adam
On Wed, Feb 9, 2011 at 7:20 AM, Homer Manalo <homer.manalo at roboteknik.com>wrote:
> Running bridge_node gives me this:
>
> **** avr_bridge's bridge_node.py *****
>
> Opening file callResponse.yaml
> Traceback (most recent call last):
> File "/home/roboteknik/ros/stacks/avr_bridge/scripts/bridge_node.py",
> line 23, in <module>
> bridge = avr_bridge.AvrBridgeNode()
> File "/home/roboteknik/ros/stacks/avr_bridge/src/avr_bridge.py", line
> 327, in __init__
> self.bridge = AvrBridge()
> File "/home/roboteknik/ros/stacks/avr_bridge/src/avr_bridge.py", line
> 157, in __init__
> self.header_struct = struct.Struct('<B<B<h') # packet_type topic_tag
> data_length
> struct.error: bad char in struct format
>
> What's the problem now here?
>
> Thanks,
> Homer
>
>
> On Wed, Feb 9, 2011 at 7:34 PM, Homer Manalo <homer.manalo at 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.
>>
>> -Homer
>>
>>
>> On Wed, Feb 9, 2011 at 7:09 PM, Homer Manalo <homer.manalo at 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 at 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 at 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 at 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.
>>>>>>
>>>>>> -Adam
>>>>>>
>>>>>>
>>>>>> On Sun, Jan 9, 2011 at 2:36 PM, airthimble <
>>>>>> joseph.st.amand at 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!
>>>>>>> --
>>>>>>> View this message in context:
>>>>>>> http://ros-users.122217.n3.nabble.com/AVR-and-ROS-tp2200563p2222791.html
>>>>>>> Sent from the ROS-Users mailing list archive at Nabble.com.
>>>>>>> _______________________________________________
>>>>>>> ros-users mailing list
>>>>>>> ros-users at code.ros.org
>>>>>>> https://code.ros.org/mailman/listinfo/ros-users
>>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> ros-users mailing list
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>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>
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