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Question by Wilmer13194 · Sep 30, 2019 at 04:20 PM · arduinoserialport

ReadLine() Function Crash

Hey guys, good day!

I am having a kind of trouble with the function ReadLine(), because when I am reading a string which comes from the serial port (Por4, 115200), sometimes it read less information and sometimes it read more information than the information that I am sending to the port.

I am working with Arduino to send the information to the serial port, I am sending this string to the port: b' 26531 26525 26533 25377 \r\n'

I know that unity should read just this line because I can see in the Arduino IDE that this line always comes in the correct form (Without loss of information) for this reason I think that should be a problem with the .ReadLine() function.

If any has an advice for me, please don hesitate!

Thanks!

This is my C# code: using System.Collections; using System.Collections.Generic; using UnityEngine; using System.IO.Ports;

public class Rotation : MonoBehaviour { SerialPort myData = new SerialPort("COM4", 19200); //

 public float speed = 5f;
 public float voltage = 0;
 public float value_serial = 0;
 float x_position = 180f;
 float y_position = 7.4f;
 float z_position = 122f;
 public string value;
 public string[] value1;
 char[] charSeparators = new char[] { ' ' };
 // Start is called before the first frame update
 void Start()
 {

     myData.Open();                                   //****************************************************
     
     
 }

 // Update is called once per frame
 void Update()
 {
     value = "";
     value = myData.ReadLine();                               //****************************************************
     
     value1 = value.Split(charSeparators, System.StringSplitOptions.None);
     
     voltage = float.Parse(value1[4])*0.0001875f;
     Debug.Log($"Value = {value}");
     Debug.Log($"Value = {voltage}");

     transform.eulerAngles = new Vector3(x_position, y_position, z_position);

     if (voltage <= 4.0f)
     {
         transform.eulerAngles = new Vector3(x_position, 0, z_position);
     }
     else
     {
         if (voltage <= 4.5f)
         {
             transform.eulerAngles = new Vector3(x_position, 90, z_position);
         }
         else
         {
             transform.eulerAngles = new Vector3(x_position, 180, z_position);
         }
     }

 }

}

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