ITP CAMP 2019 - Unity C# scripts for Serial Communication from Arduino

ArduinoSerial.cs

using UnityEngine;
/*
 * To use 'System.IO.Ports;', you should change in Player settings
 * Build Settings - Player Settings - 'Player' tab
 * Configuration - Api Compatibility Level* ---> change to ‘NET 4.x’ 
*/
using System.IO.Ports;

public class ArduinoSerial : MonoBehaviour
{

    public string port;  //ex) MAC Arduino Port "/dev/cu.usbmodem146101"
    public int baudrate = 9600;  // ex) Arduino : Serial.begin(9600);

    private SerialPort sp;
    public string incomingData;

    public Material objMaterial;
    private Color cubeColor;
    private float sensorValue;

    void Start()
    {
        sp = new SerialPort(port, baudrate);
        sp.ReadTimeout = 50; 
        sp.Open();
    }

    void Update()
    {
        try
        {
            incomingData = sp.ReadLine();
            sensorValue = float.Parse(incomingData);
            Debug.Log(sensorValue);
        }
        catch (System.Exception)
        {

        }

        Color sensorColor = objMaterial.color;
        float mPotVal = scale(0.0f, 1024.0f, 0.0f, 1.0f, sensorValue);
        sensorColor.a = mPotVal;
        objMaterial.color = sensorColor;

        /*
        //Write to Arduino 
        if (Input.GetKeyDown("1"))
        {
            sp.Write("1");
            sp.BaseStream.Flush();
        }
        else if (Input.GetKeyDown("0"))
        {
            sp.Write("0");
            sp.BaseStream.Flush();
        }
        */
    }

    //Map the sensor value
    public float scale(float OldMin, float OldMax, float NewMin, float NewMax, float OldValue)
    {
        float OldRange = (OldMax - OldMin);
        float NewRange = (NewMax - NewMin);
        float NewValue = (((OldValue - OldMin) * NewRange) / OldRange) + NewMin;

        return (NewValue);
    }

}

ArduinoSerialMultiple.cs

using UnityEngine;
/*
 * To use 'System.IO.Ports;', you should change in Player settings
 * Build Settings - Player Settings - 'Player' tab
 * Configuration - Api Compatibility Level* ---> change to ‘NET 4.x’ 
*/
using System.IO.Ports;

public class ArduinoSerialMultiple : MonoBehaviour
{

    [Tooltip("Arduino Port")]
    public string port = "/dev/cu.usbmodemXXX"; 

    [Tooltip("Arduino Serial Baudrate")]
    public int baudrate = 9600; // ex) Arduino : Serial.begin(9600);

    private SerialPort sp;
    public string incomingData;

    [Tooltip("The number of values from Arduino")]
    public int dataLength;

    public Material objMaterial;
    private float potValue;
    private float windSensorValue;

    void Start()
    {
        sp = new SerialPort(port, baudrate);
        sp.ReadTimeout = 50;  
        sp.Open();
    }

    void Update()
    {
        try
        {
            incomingData = sp.ReadLine();
            OnMessageArrived(incomingData);

        }
        catch (System.Exception)
        {

        }

        Color sensorColor = objMaterial.color;
        float mPotVal = scale(0.0f, 1024.0f, 0.0f, 1.0f, potValue);
        sensorColor.a = mPotVal;
        objMaterial.color = sensorColor;

        float mWindVal = scale(550.0f, 1024.0f, 0.1f, 5.0f, windSensorValue);
        this.transform.localScale = new Vector3(mWindVal, mWindVal, mWindVal);


        //Write to Arduino 
        if (Input.GetKeyDown("1"))
        {
            sp.Write("1");
            sp.BaseStream.Flush();
            Debug.Log(1);
        }
        else if (Input.GetKeyDown("0"))
        {
            sp.Write("0");
            sp.BaseStream.Flush();
            Debug.Log(0);
        }

    }


    void OnMessageArrived(string msg)
    {
        Debug.Log("Message arrived: " + msg);

        //split the message by comma
        string[] tokens = msg.Split(',');
        //Debug.Log(tokens.Length);
        dataLength = tokens.Length;

        // Convert String to float
        float numVal = float.Parse(tokens[0]);
        potValue = numVal;

        float numVal2 = float.Parse(tokens[1]);
        windSensorValue = numVal2;

    }

    //Map the sensor value
    public float scale(float OldMin, float OldMax, float NewMin, float NewMax, float OldValue)
    {
        float OldRange = (OldMax - OldMin);
        float NewRange = (NewMax - NewMin);
        float NewValue = (((OldValue - OldMin) * NewRange) / OldRange) + NewMin;

        return (NewValue);
    }

}

ArduinoSerialSimple.cs

using UnityEngine;
/*
 * To use 'System.IO.Ports;', you should change in Player settings
 * Build Settings - Player Settings - 'Player' tab
 * Configuration - Api Compatibility Level* ---> change to ‘NET 4.x’ 
*/
using System.IO.Ports; 

public class ArduinoSerialSimple : MonoBehaviour
{

    public string port;  //ex) MAC Arduino Port "/dev/cu.usbmodem146101"
    public int baudrate = 9600;  // ex) Arduino : Serial.begin(9600);

    private SerialPort sp;
    public string incomingData;

    void Start()
    {
        //Open Serial Port 
        sp = new SerialPort(port, baudrate);
        sp.ReadTimeout = 50; 
        sp.Open();

    }

    void Update()
    {
        //Read from Arduino
        try
        {
            incomingData = sp.ReadLine(); 
            Debug.Log(incomingData);

        }
        catch (System.Exception)
        {

        }


        //Write to Arduino 
        if (Input.GetKeyDown("1"))
        {
            sp.Write("1");
            sp.BaseStream.Flush();
        }
        else if (Input.GetKeyDown("0"))
        {
            sp.Write("0");
            sp.BaseStream.Flush();
        }

    }

    void OnApplicationQuit()
    {
        sp.Close();
    }

}