[ros-users] rosserial API Review

[Atsushi Tsuda]

Hi

Can we use array in rosserial?
I'm trying following code, but it doesn't work.
The topic has no data.

We are using rosserial of revision 133:db62c6309a50 tip.
Does anyone have suggestion?


#include <ros.h>
#include <std_msgs/Int16.h>
#include <std_msgs/Int16MultiArray.h>

#include <WProgram.h>
#include <Servo.h>

ros::NodeHandle nh;

std_msgs::Int16MultiArray thermo;
ros::Publisher thermo_pub("thermo", &thermo);

unsigned char dim0_label[] = "thermo";
void setup()
{
  nh.initNode();
  thermo.layout.dim = (std_msgs::MultiArrayDimension
*)malloc(sizeof(std_msgs::MultiArrayDimension) * 2);
  thermo.layout.dim[0].label = dim0_label;
  thermo.layout.dim[0].size = 8;
  thermo.layout.dim[0].stride = 1*8;
  thermo.data = (int *)malloc(sizeof(int)*8);
  nh.advertise(thermo_pub);
}

void loop()
{
  thermo.data[0] = analogRead(0);
  thermo.data[1] = analogRead(1);
  thermo.data[2] = analogRead(2);
  thermo.data[3] = analogRead(3);
  thermo.data[4] = analogRead(4);
  thermo.data[5] = analogRead(5);
  thermo.data[6] = analogRead(6);
  thermo.data[7] = analogRead(7);

  thermo_pub.publish( &thermo );

  nh.spinOnce();

  delay(500);
}

tsuda at tsuda-laptop:~$ rostopic echo /thermo
layout:
  dim: []
  data_offset: 0
data: []
---




2011/8/6 Michael Ferguson <mfergs7 at gmail.com>:
> We do not currently have an equivalent. However, development of one has been
> added to the todo list from the review.
>
> -Fergs
>
> On Thu, Aug 4, 2011 at 8:28 PM, Atsushi Tsuda <tsuda at jsk.t.u-tokyo.ac.jp>
> wrote:
>>
>> Hi all.
>>
>> I want to use ROS_INFO on rosserial.
>> Does anyone support this?
>>
>> Cheers,
>> A.Tsuda
>>
>> 2011/8/5 Adam Stambler <adasta at gmail.com>:
>> > Hi Mike,
>> >
>> > Its not too late.  Thats a good suggestion.  It has been ticketed and I
>> > will
>> > add it sometime early next week.
>> >
>> > Cheers,
>> > Adam
>> >
>> > On Thu, Aug 4, 2011 at 1:40 PM, Mike Purvis
>> > <mpurvis at clearpathrobotics.com>
>> > wrote:
>> >>
>> >> Ah, I missed the deadline for this.
>> >> What are the plans for supporting parameters? If I have control loop
>> >> constants or whatever else, it would be great to be able to send them
>> >> down
>> >> from a launch file rather than having to reprogram the micro every
>> >> time.
>> >> Thanks,
>> >> Mike
>> >>
>> >> On 1 August 2011 17:28, Michael Ferguson <mfergs7 at gmail.com> wrote:
>> >>>
>> >>> Greetings,
>> >>>
>> >>> An API review page has been posted for rosserial:
>> >>>
>> >>> http://www.ros.org/wiki/rosserial/Reviews/2011-08-04%20API%20Review_API_Review
>> >>>
>> >>> If you have feedback on the API, please post comments by this
>> >>> Thursday.
>> >>> You may also want to "subscribe" to the wiki page to receive email
>> >>> updates.
>> >>>
>> >>> -Mike Ferguson
>> >>>
>> >>> _______________________________________________
>> >>> ros-users mailing list
>> >>> ros-users at code.ros.org
>> >>> https://code.ros.org/mailman/listinfo/ros-users
>> >>>
>> >>
>> >>
>> >> _______________________________________________
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>> >>
>> >
>> >
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>> >
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>
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-- 
津田　敦史
東京大学工学部機械情報工学科
稲葉・岡田研究室（情報システム工学研究室）
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E-mail: tsuda at jsk.t.u-tokyo.ac.jp