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1 | initial version |
hi
you must to use Float32MultiArray
#include <ros.h>
#include "std_msgs/Float64MultiArray.h"
ros::NodeHandle nh;
float voltage1 = 23.44, voltage2 = 74.43;
std_msgs::Float64MultiArray test;
ros::Publisher p("my_topic", &test);
void setup()
{
nh.initNode();
nh.advertise(p);
test.data.resize(2);
}
void loop()
{
test.data.at(0) = voltage1;
test.data.at(1) = voltage2;
p.publish( &test );
nh.spinOnce();
delay(10);
}
2 | No.2 Revision |
hi
you must to use Float32MultiArray
#include <ros.h>
#include "std_msgs/Float64MultiArray.h"
ros::NodeHandle nh;
float voltage1 = 23.44, voltage2 = 74.43;
std_msgs::Float64MultiArray test;
ros::Publisher p("my_topic", &test);
void setup()
{
nh.initNode();
nh.advertise(p);
test.data.resize(2);
}
void loop()
{
test.data.at(0) = voltage1;
test.data.at(1) = voltage2;
p.publish( &test );
nh.spinOnce();
delay(10);
}
if you want to publish single float via topic change this part of code:
void loop()
{
test.data = voltage1;
p.publish( &test );// add this line
test.data = voltage2;
p.publish( &test );
nh.spinOnce();
delay(10);
}
3 | No.3 Revision |
hi
you must to use Float32MultiArray
#include <ros.h>
#include "std_msgs/Float64MultiArray.h"
ros::NodeHandle nh;
float voltage1 = 23.44, voltage2 = 74.43;
std_msgs::Float64MultiArray test;
ros::Publisher p("my_topic", &test);
void setup()
{
nh.initNode();
nh.advertise(p);
test.data.resize(2);
test.data = (float*)malloc(sizeof(float) *2);
}
void loop()
{
test.data.at(0) = test.data[0]= voltage1;
test.data.at(1) test.data[1] = voltage2;
p.publish( &test );
nh.spinOnce();
delay(10);
}
if you want to publish single float via topic change this part of code:
void loop()
{
test.data = voltage1;
p.publish( &test );// add this line
test.data = voltage2;
p.publish( &test );
nh.spinOnce();
delay(10);
}
4 | No.4 Revision |
hi
you must to use Float32MultiArray
#include <ros.h>
#include "std_msgs/Float64MultiArray.h"
ros::NodeHandle nh;
float voltage1 = 23.44, voltage2 = 74.43;
std_msgs::Float64MultiArray test;
ros::Publisher p("my_topic", &test);
void setup()
{
nh.initNode();
nh.advertise(p);
test.data = (float*)malloc(sizeof(float) *2);
test.layout.dim_length = 2;
}
void loop()
{
test.data[0]= voltage1;
test.data[1] = voltage2;
p.publish( &test );
nh.spinOnce();
delay(10);
}
if you want to publish single float via topic change this part of code:
void loop()
{
test.data = voltage1;
p.publish( &test );// add this line
test.data = voltage2;
p.publish( &test );
nh.spinOnce();
delay(10);
}
5 | No.5 Revision |
hi
you must to use Float32MultiArray
#include <ros.h>
#include "std_msgs/Float64MultiArray.h"
ros::NodeHandle nh;
float voltage1 = 23.44, voltage2 = 74.43;
std_msgs::Float64MultiArray test;
ros::Publisher p("my_topic", &test);
void setup()
{
nh.initNode();
nh.advertise(p);
test.data = (float*)malloc(sizeof(float) *2);
test.layout.dim_length = 2;
test.data_length =2;
}
void loop()
{
test.data[0]= voltage1;
test.data[1] = voltage2;
p.publish( &test );
nh.spinOnce();
delay(10);
}
if you want to publish single float via topic change this part of code:
void loop()
{
test.data = voltage1;
p.publish( &test );// add this line
test.data = voltage2;
p.publish( &test );
nh.spinOnce();
delay(10);
}