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luva3178 merged 4 commits from dev into main 2025-12-11 16:08:23 +01:00
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Samples~/Websockets-Comm/ArduinoESP32-Code.meta Normal file
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Samples~/Websockets-Comm/ArduinoESP32-Code/ESP32_Server.meta Normal file
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Samples~/Websockets-Comm/ArduinoESP32-Code/ESP32_Server/ESP32_Server.ino Normal file
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//==================================
//ESP32 WebSocket Server: Toggle LED
//by: Ulas Dikme
//modified by: António Pinheiro Braga
//==================================
#include <WiFi.h>
#include <WebServer.h>
#include <WebSocketsServer.h>
//-----------------------------------------------
const char* ssid = "ChangeMe"; //Change this to match your network name
const char* password = "ChangeMe"; //Change this to match your network password
//-----------------------------------------------
//NOTE: You might need to change the following code depending on the model of your ESP32
#define BUILTIN_LED 13 //Default Sparkfun ESP32-S2 Built in LED
#define LED 10
#define POTENTIOMETER A5
#define RGBLED_RED A1
#define RGBLED_GREEN A2
#define RGBLED_BLUE A0
#define BUTTON 34
//-----------------------------------------------
WebServer server(80);
WebSocketsServer webSocket = WebSocketsServer(81);
//-----------------------------------------------
boolean LEDonoff=false; String JSONtxt; String oldJSON; int currentClientNumber; int currentpotVal; int oldpotVal; int mappedPotVal; bool buttonMessageSent; int buttonState;
//-----------------------------------------------
#include "html.h"
#include "header.h"
//====================================================================
void setup()
{
Serial.begin(115200); pinMode(LED, OUTPUT); pinMode(BUILTIN_LED, OUTPUT); pinMode(RGBLED_RED, OUTPUT); pinMode(RGBLED_GREEN, OUTPUT); pinMode(RGBLED_BLUE, OUTPUT); pinMode(BUTTON, INPUT);
//-----------------------------------------------
connect2Network();
buttonMessageSent = false;
}
//====================================================================
int mapPotentiometerValue(int potValue) {
int mappedValue;
// Ensure the potentiometer value is within the expected range (0-8191)
if (potValue < 0) potValue = 0;
if (potValue > 8191) potValue = 8191;
// Map the value from the range [0, 8191] to [0, 100]
mappedValue = (potValue * 100) / 8191;
return mappedValue;
}
void loop()
{
currentpotVal = analogRead(POTENTIOMETER);
buttonState = digitalRead(BUTTON);
//int brightness = currentpotVal / 4;
// int brightness = map(currentpotVal, 0, 8191, 0, 255);
// analogWrite(LED_ANALOG, brightness);
mappedPotVal = mapPotentiometerValue(currentpotVal);
int threshold = 2;
int margin = 2;
if(mappedPotVal <= margin) mappedPotVal = 0;
if(mappedPotVal >= 100 - margin) mappedPotVal = 100;
if(abs(mappedPotVal - oldpotVal) >= threshold)
{
Serial.println("Pot value: " + String(mappedPotVal));
webSocket.broadcastTXT("Pot value: " + String(mappedPotVal));
oldpotVal = mappedPotVal;
}
if(WiFi.status() != WL_CONNECTED) {
Serial.println("Lost connection to network! Attempting to reconnect...");
connect2Network();
return;
}
webSocket.loop(); server.handleClient();
if(currentClientNumber != webSocket.connectedClients()){
if(currentClientNumber < webSocket.connectedClients()) Serial.println("A new client has connected!");
else Serial.println("A client has disconnected");
Serial.print("Number of clients currently connected: ");
Serial.println(webSocket.connectedClients());
currentClientNumber = webSocket.connectedClients();
webSocket.broadcastTXT(JSONtxt);
}
if(buttonState == HIGH && buttonMessageSent == false) {
webSocket.broadcastTXT("Button Pressed: true");
buttonMessageSent = true;
} else if(buttonState == LOW) buttonMessageSent = false;
//-----------------------------------------------
if(LEDonoff == false) {digitalWrite(LED, LOW); digitalWrite(BUILTIN_LED, LOW);}
else {digitalWrite(LED, HIGH); digitalWrite(BUILTIN_LED, HIGH);}
//-----------------------------------------------
String LEDstatus = "OFF";
if(LEDonoff == true) LEDstatus = "ON";
JSONtxt = "{\"LEDonoff\":\""+LEDstatus+"\"}";
sendMessage2Clients();
}

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Samples~/Websockets-Comm/Scenes/WebSocket Client Example.unity.meta → Samples~/Websockets-Comm/ArduinoESP32-Code/ESP32_Server/ESP32_Server.ino.meta
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Samples~/Websockets-Comm/ArduinoESP32-Code/ESP32_Server/header.h Normal file
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//=======================================
//handle function: send webpage to client
//=======================================
void webpage()
{
server.send(200,"text/html", webpageCode);
}
void changeLEDBrightness(int pinNumber, int brightness) {
int mappedBrightness = map(brightness, 0, 100, 0, 255);
analogWrite(pinNumber, mappedBrightness);
}
//=====================================================
//function process event: new data received from client
//=====================================================
void webSocketEvent(uint8_t num, WStype_t type, uint8_t *payload, size_t welength)
{
String payloadString = (const char *)payload;
Serial.print("payloadString= ");
Serial.println(payloadString);
if(type == WStype_TEXT) //receive text from client
{
byte separator=payloadString.indexOf('=');
String var = payloadString.substring(0,separator);
Serial.print("var= ");
Serial.println(var);
String val = payloadString.substring(separator+1);
Serial.print("val= ");
Serial.println(val);
Serial.println(" ");
if(var == "LEDonoff")
{
LEDonoff = false;
if(val == "ON") LEDonoff = true;
}
if(var == "RedLEDintensity") changeLEDBrightness(RGBLED_RED, val.toInt());
if(var == "GreenLEDintensity") changeLEDBrightness(RGBLED_GREEN, val.toInt());
if(var == "BlueLEDintensity") changeLEDBrightness(RGBLED_BLUE, val.toInt());
}
}
void connect2Network()
{
WiFi.begin(ssid, password);
Serial.println("Printing this device's details bellow...");
Serial.print("MacAddress: ");
Serial.println(WiFi.macAddress());
Serial.print("Device Name: ");
Serial.println(WiFi.getHostname());
Serial.print("Attempting to connect to " + String(ssid) + " network...");
while(WiFi.status() != WL_CONNECTED){Serial.print("."); delay(500);}
WiFi.mode(WIFI_STA);
Serial.println();
Serial.println("Successfully connected to network!");
Serial.print("Local IP: ");
Serial.println(WiFi.localIP());
//-----------------------------------------------
server.on("/", webpage);
//-----------------------------------------------
server.begin(); webSocket.begin();
webSocket.onEvent(webSocketEvent);
}
void sendMessage2Clients() {
if(oldJSON != JSONtxt) webSocket.broadcastTXT(JSONtxt);
oldJSON = JSONtxt;
}

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Samples~/Websockets-Comm/ArduinoESP32-Code/ESP32_Server/header.h.meta Normal file
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Samples~/Websockets-Comm/ArduinoESP32-Code/ESP32_Server/html.h Normal file
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//=====================
//HTML code for webpage
//=====================
const char webpageCode[] PROGMEM =
R"=====(
<!DOCTYPE HTML>
<html>
<head>
<title>ESP32 Web Server</title>
</head>
<!-------------------------------C S S------------------------------>
<style>
#btn
{
display: inline-block;
text-decoration: none;
background: #8CD460;
color: rgba(255,255,255, 0.80);
font-weight: bold;
font: 60px arial, sans-serif;
width: 150px;
height: 150px;
line-height: 150px;
border-radius: 50%;
text-align: center;
vertical-align: middle;
overflow: hidden;
box-shadow: 0px 0px 0px 8px #8CD460;
border: solid 2px rgba(255,255,255, 0.47);
transition: 0.5s;
}
#btn2
{
display: inline-block;
text-decoration: none;
background: #8CD460;
color: rgba(255,255,255, 0.80);
font-weight: bold;
font: 60px arial, sans-serif;
width: 150px;
height: 150px;
line-height: 150px;
border-radius: 50%;
text-align: center;
vertical-align: middle;
overflow: hidden;
box-shadow: 0px 0px 0px 8px #8CD460;
border: solid 2px rgba(255,255,255, 0.47);
transition: 0.5s;
}
body {text-align:center; font-family:"Calibri"; background-color:rgba(0, 3, 8, 0.26)}
h1 {color: rgba(0, 0, 255, 0.87); font-size: 50px;}
</style>
<!------------------------------H T M L----------------------------->
<body>
<h1>E S P 3 2<br>WebSocket Server</h1>
<a href="#" id="btn" ONCLICK='button()'> </a>
<a href="#" id="btn2" ONCLICK='button2()'> </a>
<!-----------------------------JavaScript--------------------------->
<script>
InitWebSocket()
function InitWebSocket()
{
websock = new WebSocket('ws://'+window.location.hostname+':81/');
websock.onmessage = function(evt)
{
JSONobj = JSON.parse(evt.data);
document.getElementById('btn').innerHTML = JSONobj.LEDonoff;
if(JSONobj.LEDonoff == 'ON')
{
document.getElementById('btn').style.background='#FF0000';
document.getElementById('btn').style["boxShadow"] = "0px 0px 0px 8px #FF0000";
}
else
{
document.getElementById('btn').style.background='#111111';
document.getElementById('btn').style["boxShadow"] = "0px 0px 0px 8px #111111";
}
}
}
//-------------------------------------------------------------
function button()
{
btn = 'LEDonoff=ON';
if(document.getElementById('btn').innerHTML == 'ON')
{
btn = 'LEDonoff=OFF';
}
websock.send(btn);
}
function button2()
{
message = 'message=test';
websock.send(message);
}
</script>
</body>
</html>
)=====";

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Samples~/Websockets-Comm/Scenes/WebSocket Client Example.unity → Samples~/Websockets-Comm/ExtralityLab-WebSocket Client Example.unity
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41
Samples~/Websockets-Comm/Scripts/WebSocketClient.cs
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@@ -3,6 +3,8 @@ using UnityEngine;
using NativeWebSocket;
using UnityEngine.UI;
using TMPro;
using System.Net.NetworkInformation;
using System.Collections;
public class WebSocketClient : MonoBehaviour
{
@@ -20,10 +22,18 @@ public class WebSocketClient : MonoBehaviour
[SerializeField]
private int Port = 7890; //The Port your WebSocket Connection will "talk" to
[SerializeField]
private TextMeshProUGUI connectionStatusText; //Text to show the connection status
private Color connectedColor = Color.green; //Color for connected status
private Color disconnectedColor = Color.red; //Color for disconnected status
private WebSocket webSocket;
private void initWebSocket() //Starts WebSocket Client Connection
{
connectionStatusText.text = "Connecting to device with IP - " + IPAdress + "...";
webSocket = new WebSocket($"ws://{IPAdress}:{Port}");
//while (webSocket.State == WebSocketState.Connecting) {
webSocket.Connect();
@@ -42,11 +52,16 @@ public class WebSocketClient : MonoBehaviour
Debug.Log("Connecion opened!");
string message = "Hello from Unity! = Device name: " + SystemInfo.deviceName + " | Device Mac Address: " + SystemInfo.deviceUniqueIdentifier;
SendWebSocketMessage(message);
connectionStatusText.text = "Connected to device with IP - " + IPAdress;
connectionStatusText.color = connectedColor;
}
private void WebSocket_OnError(string error) //Alerts on console when WebSocket Connection is Unsuccessfull
{
Debug.Log($"Error: {error}");
connectionStatusText.text = "Error on connnecting to server! (Check IP Adress and Port)";
connectionStatusText.color = disconnectedColor;
}
private void WebSocket_OnClose(WebSocketCloseCode closeCode) //Alerts on console when WebSocket Connection is Closed
@@ -122,11 +137,37 @@ public class WebSocketClient : MonoBehaviour
}
private IEnumerator checkConnection()
{
string baseText = "Connecting to device with IP - " + IPAdress;
string[] dots = new[] { ".", "..", "..." };
int dotIndex = 0;
float timeout = 5f;
float elapsed = 0f;
while (elapsed < timeout)
{
connectionStatusText.text = baseText + dots[dotIndex];
dotIndex = (dotIndex + 1) % dots.Length;
yield return new WaitForSeconds(1f);
elapsed += 1f;
}
Debug.Log("State is: " + webSocket.State.ToString());
if (webSocket.State == WebSocketState.Connecting)
{
connectionStatusText.text = "Could not connect to device. " + "(Device powered on? | Connected to same network? | IP Correct? | Port Correct?)";
connectionStatusText.color = disconnectedColor;
}
}
// Start is called before the first frame update
void Start()
{
initWebSocket();
Debug.Log("Started");
StartCoroutine(checkConnection());
}
// Update is called once per frame

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package.json
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{
"name": "se.su.dsv.extralitylab.unity",
"version": "0.1.3",
"version": "0.1.4",
"displayName": "ExtralityLab@DSV",
"description": "Package for ExtralityLab at DSV Stockholm University.",
"unity": "2022.3",