Introduction: Communcation: LattePanda⇌Leonardo

Picture of Communcation: LattePanda⇌Leonardo

If you don't know how to communicate from the Arduino to the LattePanda CPU or communicate from LattePanda CPU to Arduino, this post is perfect for you!!!

This tutorial is also suitable for the communication between arduino and your PC.

These days, I'm learning serial port communication and want to write a simple demo on my LattePanda. After learning for many days, I realized this function. This post is mainly about the serial port communication.

Hope it's useful for you.

Step 1: What You Need:

Software:

Hardware:

Or

Just a LattePanda.(LattePanda=Arduino Leonardo+Win10 PC).

Step 2: 1.Communicate From the Arduino to the LattePanda CPU

Picture of 1.Communicate From the Arduino to the LattePanda CPU

Function:

Arduino:Send '1'

Computer: Receive '1'

(You can try to send the data of your sensor or any other parameter if you want.)

I found an easiest way to do this.

C# code:

using System;
using System.IO.Ports; using System.Threading; namespace ConsoleApp1 { class Program { static SerialPort _serialPort; public static void Main() { _serialPort = new SerialPort(); _serialPort.PortName = "COM4";//Set your board COM _serialPort.BaudRate = 9600; _serialPort.Open(); while (true) { string a = _serialPort.ReadExisting(); Console.WriteLine(a); Thread.Sleep(200); } } } }

Arduino sketch:

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

void loop() { Serial.print('1'); delay(200); }

Press Start, and you will see the result like the picture above. We received the data from Arduino successfully.

Step 3: 2. Communicate From the LattePanda CPU to the Arduino

Picture of 2. Communicate From the LattePanda CPU to the Arduino

Function:

Computer: Send '1' or '0'

Arduino: Receive '1' and turn on the light. Receive '0' and turn off the light.

Just make two button to realize this function. See the picture above.

C# Code:(Winforms)

using System;
using System.Windows.Forms; using System.IO.Ports; namespace lightcontrol { public partial class Form1 : Form { SerialPort port; public Form1() { InitializeComponent(); this.FormClosed += new FormClosedEventHandler(Form1_FormClosed); if (port==null) { port = new SerialPort("COM7", 9600);//Set your board COM port.Open(); } } void Form1_FormClosed(object sender,FormClosedEventArgs e) { if(port !=null &&port.IsOpen) { port.Close(); } } private void button1_Click(object sender, EventArgs e) { PortWrite("1"); }

private void button2_Click(object sender, EventArgs e) { PortWrite("0"); } private void PortWrite(string message) { port.Write(message); } } }

Arduino sketch:

const int LedPin = 13;
int ledState = 0; void setup() { pinMode(LedPin, OUTPUT); Serial.begin(9600); } void loop() { char receiveVal; if(Serial.available() > 0) { receiveVal = Serial.read(); if(receiveVal == '1') ledState = 1; else ledState = 0; } digitalWrite(LedPin, ledState); delay(50); }

If you click the button 'ON', you will see the light(pin13) turns on.

There's another way to do this, you can see the tutorial here.

Step 4: Summary

These are the simplest way to communicate between arduino and your PC.

Most of the projects need Arduino to send data to computer and use computer to analize data or do other thing. So communicate is necessary and very important.

Hope it's helpful for you. If you have any questions please let me know.

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Bio: Green hand in arduino
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