用C#控制Arduino

 C#控制只要使用 Serial Port 來溝通，讓電腦端可以控制 Arduino 的 LED

Serial Port必須要引入 using System.IO.Ports才能使用，有些人在使用VS時會缺少Serial Port元件

如下圖到 : 工具 > NuGet套件管理員 > 管理方案的NuGet套件

看到此視窗請到瀏覽位置 > 在收尋的地方打上Serial Port > 點選System.IO.Ports > 勾選並選擇安裝

Serial Port的錯誤選項就會消失了

介下來就是開始撰寫程式

C# :

新增這些元件

程式部分 : (我沒把在測試中不需要的程式碼刪除，只做了註解)

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; using System.Threading; namespace WinFormsApp1 { public partial class Form1 : Form { // static SerialPort _serialPort; private SerialPort serialPort1 = new SerialPort(); public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { serialPort1.BaudRate = 9600; // serialPort1.Parity = Parity.None; // serialPort1.DataBits = 8; // serialPort1.StopBits = StopBits.One; btnDisconnect.Enabled = false; btnLedOpen.Enabled = false; btnLedClose.Enabled = false; cbPortNumber.Items.AddRange(SerialPort.GetPortNames()); label1.Text = "PC狀態：尚未連線"; } private void cbPortNumber_SelectedIndexChanged(object sender, EventArgs e) { serialPort1.PortName = cbPortNumber.Text; } /*private void btnConnect_Click(object sender, EventArgs e) { serialPort1.Open(); btnConnect.Enabled = false; btnDisconnect.Enabled = true; btnLedOpen.Enabled = true; btnLedClose.Enabled = true; label1.Text = "PC狀態：連線中"; }*/ private void btnDisconnect_Click(object sender, EventArgs e) { serialPort1.Write("0"); serialPort1.Close(); btnConnect.Enabled = true; btnDisconnect.Enabled = false; btnLedOpen.Enabled = false; btnLedClose.Enabled = false; label1.Text = "PC狀態：斷線中"; label2.Text = "Arduino回傳："; label3.Text = serialPort1.IsOpen.ToString(); } private void btnLedOpen_Click(object sender, EventArgs e) { serialPort1.Write("1"); btnLedClose.Enabled = true; btnLedOpen.Enabled = false; label1.Text = "送出指令：LED ON"; label2.Text = "Arduino回傳：" + serialPort1.ReadLine(); } private void btnLedClose_Click(object sender, EventArgs e) { serialPort1.Write("0"); btnLedOpen.Enabled = true; btnLedClose.Enabled = false; label1.Text = "送出指令：LED OFF"; label2.Text = "Arduino回傳：" + serialPort1.ReadLine(); } private void btnConnect_Click_1(object sender, EventArgs e) { serialPort1.PortName = cbPortNumber.Text.ToString(); serialPort1.Parity = Parity.None; serialPort1.DataBits = 8; serialPort1.StopBits = StopBits.One; serialPort1.Open(); btnConnect.Enabled = false; btnDisconnect.Enabled = true; btnLedOpen.Enabled = true; btnLedClose.Enabled = true; label1.Text = "PC狀態：連線中"; label3.Text = serialPort1.IsOpen.ToString(); // serialPort1.Write("1"); } } }

Arduino的程式碼 :

int led1=13;

void setup() {

   Serial.begin(9600);     // 開啟 Serial port, 通訊速率為 9600 bps

   // 初始化 LED 接腳

   pinMode(led1, OUTPUT);

   digitalWrite(led1, LOW);

  Serial.println("please select '1' or '0' to control led:");

}

void loop() {

   // 檢查是否有資料可供讀取

   if (Serial.available() > 0) {

     // 讀取進來的 byte

     char inByte = Serial.read();

     // 根據收到的字元決定要打開或關掉 LED

     Serial.println(inByte);

     switch (inByte) {

     case '0':    

       digitalWrite(led1, LOW);

       delay(1000);

       Serial.println("LED OFF");

       break;

     case '1':

       digitalWrite(led1, HIGH);

       delay(10000);

       Serial.println("LED ON");

       break;

     default:

       // 關掉所有的 LED

       digitalWrite(led1, LOW);

        delay(10000);

     }

   }

}