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Okay with the info provided I think I can sort of give some help. Check this past answer too btw.

So you need to get the data in ROS, you need to make a wrapper for your sensor, if you know it's serial communication check the serial support for ROS here.

Also the guy from the answer made a nice simple example of ROS serial communication here

From his code:

#include <ros/ros.h>
#include <serial/serial.h>
#include <std_msgs/String.h>
#include <std_msgs/Empty.h>

serial::Serial ser;

void write_callback(const std_msgs::String::ConstPtr& msg){
    ROS_INFO_STREAM("Writing to serial port" << msg->data);
    ser.write(msg->data);
}

int main (int argc, char** argv){
    ros::init(argc, argv, "serial_example_node");
    ros::NodeHandle nh;

    ros::Subscriber write_sub = nh.subscribe("write", 1000, write_callback);
    ros::Publisher read_pub = nh.advertise<std_msgs::String>("read", 1000);

    try
    {
        ser.setPort("/dev/ttyACM0");
        ser.setBaudrate(9600);
        serial::Timeout to = serial::Timeout::simpleTimeout(1000);
        ser.setTimeout(to);
        ser.open();
    }
    catch (serial::IOException& e)
    {
        ROS_ERROR_STREAM("Unable to open port ");
        return -1;
    }

    if(ser.isOpen()){
        ROS_INFO_STREAM("Serial Port initialized");
    }else{
        return -1;
    }

    ros::Rate loop_rate(5);
    while(ros::ok()){

        ros::spinOnce();

        if(ser.available()){
            ROS_INFO_STREAM("Reading from serial port");
            std_msgs::String result;
            result.data = ser.read(ser.available());
            ROS_INFO_STREAM("Read: " << result.data);
            read_pub.publish(result);
        }
        loop_rate.sleep();

    }
}

I think it doesn't get any simpler than that. Once you read the data from the serial port you can use it in your project. Good luck and happy coding!

Okay with the info provided I think I can sort of give some help. Check this past answer too btw.

So you need in order to get the data in ROS, you need to make a wrapper for your sensor, if you know it's serial communication check the serial support for ROS here.

Also the guy from the answer made a nice simple example of ROS serial communication here

From his code:

#include <ros/ros.h>
#include <serial/serial.h>
#include <std_msgs/String.h>
#include <std_msgs/Empty.h>

serial::Serial ser;

void write_callback(const std_msgs::String::ConstPtr& msg){
    ROS_INFO_STREAM("Writing to serial port" << msg->data);
    ser.write(msg->data);
}

int main (int argc, char** argv){
    ros::init(argc, argv, "serial_example_node");
    ros::NodeHandle nh;

    ros::Subscriber write_sub = nh.subscribe("write", 1000, write_callback);
    ros::Publisher read_pub = nh.advertise<std_msgs::String>("read", 1000);

    try
    {
        ser.setPort("/dev/ttyACM0");
        ser.setBaudrate(9600);
        serial::Timeout to = serial::Timeout::simpleTimeout(1000);
        ser.setTimeout(to);
        ser.open();
    }
    catch (serial::IOException& e)
    {
        ROS_ERROR_STREAM("Unable to open port ");
        return -1;
    }

    if(ser.isOpen()){
        ROS_INFO_STREAM("Serial Port initialized");
    }else{
        return -1;
    }

    ros::Rate loop_rate(5);
    while(ros::ok()){

        ros::spinOnce();

        if(ser.available()){
            ROS_INFO_STREAM("Reading from serial port");
            std_msgs::String result;
            result.data = ser.read(ser.available());
            ROS_INFO_STREAM("Read: " << result.data);
            read_pub.publish(result);
        }
        loop_rate.sleep();

    }
}

I think it doesn't get any simpler than that. Once you read the data from the serial port you can use it in your project. Good luck and happy coding!