C#傳送字元至Arduino

C#

加入
using System.IO.Ports;
程式碼
        private void button1_Click(object sender, EventArgs e)
        {
            serialPort1.Open();
            button1.Enabled = false;
            button2.Enabled =true;
            button3.Enabled = true;
            button4.Enabled = false;
            label1.Text = "連線中";
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            serialPort1.PortName = "COM14";
            serialPort1.BaudRate = 9600;
            serialPort1.Parity = Parity.None;
            serialPort1.DataBits = 8;
            serialPort1.StopBits = StopBits.One;
            button2.Enabled = false;
            button3.Enabled = false;
            button4.Enabled = false;
            label1.Text = "尚未連線";
        }

        private void button2_Click(object sender, EventArgs e)
        {
            serialPort1.Write("0");
            serialPort1.Close();
            button1.Enabled = true;
            button2.Enabled = false;
            button3.Enabled = false;
            button4.Enabled = false;
            label1.Text = "斷線中";
        }

        private void button3_Click(object sender, EventArgs e)
        {
            serialPort1.Write("1");
            button4.Enabled = true;
            button3.Enabled = false;
            label1.Text = "LED ON";
        }

        private void button4_Click(object sender, EventArgs e)
        {
            serialPort1.Write("0");
            button3.Enabled = true;
            button4.Enabled = false;
            label1.Text = "LED OFF";
        }
Arduino程式
 // 結合 switch case 的 Serial port 讀取範例 V1
void setup() {
   Serial.begin(9600);     // 開啟 Serial port, 通訊速率為 9600 bps
   // 初始化 LED 接腳
   pinMode(13, OUTPUT);
}       
void loop() {
   // 檢查是否有資料可供讀取
   if (Serial.available() > 0) {
     // 讀取進來的 byte
     int inByte = Serial.read();
     // 根據收到的字元決定要打開或關掉 LED
     switch (inByte) {
     case '0':    
       digitalWrite(13, LOW);
       break;
     case '1': 
       digitalWrite(13, HIGH);
       break;
     default:
       // 關掉所有的 LED
       digitalWrite(13, LOW);
     }
   } 
}