从C#到Arduino使用Serial.Port

大家好，我需要你们帮助我的项目。我在 C# 程序中有一个 2 个文本框（类型字符串），我需要使用 Serial.Port 将此数字发送到 Arduino。到目前为止，我必须将其中一个值发送到 arduino，但如果我输入"1200"，arduino 读取并显示：1,2,0,0,0 我需要"1200"，它的效果不佳。如何将 2 个值从 C# 发送到 Arduino？arduino 将如何读取这些值（x 和 y）？

C#

    using System;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Data;
    using System.Drawing;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    using System.Windows.Forms;
    using System.IO.Ports;  // necessário para ter acesso as portas
    namespace interfaceArduinoVS2013
{
    public partial class Form1 : Form
    {
        string RxString;
        public Form1()
        {
            InitializeComponent();
            timerCOM.Enabled = true;
        }
        private void atualizaListaCOMs()
        {
            int i;
            bool quantDiferente;    //If there are more ports
            i = 0;
            quantDiferente = false;
            //if there are new ports
            if (comboBox1.Items.Count == SerialPort.GetPortNames().Length)
            {
                foreach (string s in SerialPort.GetPortNames())
                {
                    if (comboBox1.Items[i++].Equals(s) == false)
                    {
                        quantDiferente = true;
                    }
                }
            }
            else
            {
                quantDiferente = true;
            }
            //it was't detected difference
            if (quantDiferente == false)
            {
                return;                     
            }
            //clean comboBox
            comboBox1.Items.Clear();
            //add all the COMs in the list
            foreach (string s in SerialPort.GetPortNames())
            {
                comboBox1.Items.Add(s);
            }
            //select the first position
            comboBox1.SelectedIndex = 0;
        }
        private void timerCOM_Tick(object sender, EventArgs e)
        {
            atualizaListaCOMs();
        }
        private void btConectar_Click(object sender, EventArgs e)
        {
            if (serialPort1.IsOpen == false)
            {
                try
                {
                    serialPort1.PortName = comboBox1.Items[comboBox1.SelectedIndex].ToString();
                    serialPort1.Open();
                }
                catch
                {
                    return;
                }
                if (serialPort1.IsOpen)
                {
                    btConectar.Text = "Desconectar";
                    comboBox1.Enabled = false;
                }
            }
            else
            {
                try
                {
                    serialPort1.Close();
                    comboBox1.Enabled = true;
                    btConectar.Text = "Conectar";
                }
                catch
                {
                    return;
                }
            }
        }
        private void Form1_FormClosed(object sender, FormClosedEventArgs e)
        {
            if(serialPort1.IsOpen == true)  // if the port is open 
             serialPort1.Close();            //close
        }
        private void btEnviar_Click(object sender, EventArgs e)
        {
            if(serialPort1.IsOpen == true)          //porta está aberta
            serialPort1.Write(textBoxX.Text);  //send the text from textboxX
            serialPort1.Write(textBoxY.Text);
        }
        private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
        {
            RxString = serialPort1.ReadExisting();              //read data from serial
            this.Invoke(new EventHandler(trataDadoRecebido));   
        }
        private void trataDadoRecebido(object sender, EventArgs e)
        {
            textBoxReceber.AppendText(RxString);
        }
        private void Form1_Load(object sender, EventArgs e)
        {
        }
    }
}

Arduino 脚本

 void setup()
{
  Serial.begin(9600);  
}

    void loop()
    {
      if(Serial.available())        
      {
        char c = Serial.read();   
        Serial.println(c);           
      }
    }