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ArduinoCloudFunction
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ArduinoCloudFunction
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#include <WiFiNINA.h>
#include "arduino_secrets.h"
#define SECRET_SSID "Redmi 9 Prime"
#define SECRET_PASS "Nilanjan48"
// Enter your wifi network name and Wifi Password
char ssid[] = SECRET_SSID; // your network SSID (name)
char pass[] = SECRET_PASS; // your network password (use for WPA, or use as key for WEP)
// Set web server port number to 80
WiFiServer server(80);
// Variable to store the HTTP request
String header;
// These variables store current output state of LED
String outputRedState = "off";
String outputGreenState = "off";
String outputYellowState = "off";
// Assign output variables to GPIO pins
const int redLED = 2;
const int greenLED = 4;
const int yellowLED = 5;
// Current time
unsigned long currentTime = millis();
// Previous time
unsigned long previousTime = 0;
// Define timeout time in milliseconds (example: 2000ms = 2s)
const long timeoutTime = 2000;
void setup() {
Serial.begin(115200);
// Initialize the output variables as outputs
pinMode(redLED, OUTPUT);
pinMode(greenLED, OUTPUT);
pinMode(yellowLED, OUTPUT);
// Set outputs to LOW
digitalWrite(redLED, LOW);
digitalWrite(greenLED, LOW);
digitalWrite(yellowLED, LOW);
// Connect to Wi-Fi network with SSID and password
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, pass);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
// Print local IP address and start web server
Serial.println("");
Serial.println("WiFi connected.");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
server.begin();
}
void loop() {
WiFiClient client = server.available(); // Listen for incoming clients
if (client) { // If a new client connects,
Serial.println("New Client."); // print a message out in the serial port
String currentLine = ""; // make a String to hold incoming data from the client
currentTime = millis();
previousTime = currentTime;
while (client.connected() && currentTime - previousTime <= timeoutTime) { // loop while the client's connected
currentTime = millis();
if (client.available()) { // if there's bytes to read from the client,
char c = client.read(); // read a byte, then
Serial.write(c); // print it out the serial monitor
header += c;
if (c == '\n') { // if the byte is a newline character
// if the current line is blank, you got two newline characters in a row.
// that's the end of the client HTTP request, so send a response:
if (currentLine.length() == 0) {
// HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
// and a content-type so the client knows what's coming, then a blank line:
client.println("HTTP/1.1 200 OK");
client.println("Content-type:text/html");
client.println("Connection: close");
client.println();
// turns the GPIOs on and off
if (header.indexOf("GET /2/on") >= 0) {
Serial.println("RED LED is on");
outputRedState = "on";
digitalWrite(redLED, HIGH);
} else if (header.indexOf("GET /2/off") >= 0) {
Serial.println("RED LED is off");
outputRedState = "off";
digitalWrite(redLED, LOW);
} else if (header.indexOf("GET /4/on") >= 0) {
Serial.println("Green LED is on");
outputGreenState = "on";
digitalWrite(greenLED, HIGH);
} else if (header.indexOf("GET /4/off") >= 0) {
Serial.println("Green LED is off");
outputGreenState = "off";
digitalWrite(greenLED, LOW);
} else if (header.indexOf("GET /5/on") >= 0) {
Serial.println("Yellow LED is on");
outputYellowState = "on";
digitalWrite(yellowLED, HIGH);
} else if (header.indexOf("GET /5/off") >= 0) {
Serial.println("Yellow LED is off");
outputYellowState = "off";
digitalWrite(yellowLED, LOW);
}
// Display the HTML web page
client.println("<!DOCTYPE html><html>");
client.println("<head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">");
client.println("<link rel=\"icon\" href=\"data:,\">");
// CSS to style the on/off buttons
client.println("<style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}");
client.println("</style></head>");
// Web Page Heading
client.println("<body><h1>My LED Control Server</h1>");
// Display current state, and ON/OFF buttons for GPIO 2 Red LED
client.println("<p>Red LED is " + outputRedState + "</p>");
// If the outputRedState is off, it displays the OFF button
if (outputRedState == "off") {
client.println("<p><a href=\"/2/on\"><button class=\"button buttonOff\">OFF</button></a></p>");
} else {
client.println("<p><a href=\"/2/off\"><button class=\"button buttonRed\">ON</button></a></p>");
}
// Display current state, and ON/OFF buttons for GPIO 4 Green LED
client.println("<p>Green LED is " + outputGreenState + "</p>");
// If the outputGreenState is off, it displays the OFF button
if (outputGreenState == "off") {
client.println("<p><a href=\"/4/on\"><button class=\"button buttonOff\">OFF</button></a></p>");
} else {
client.println("<p><a href=\"/4/off\"><button class=\"button buttonGreen\">ON</button></a></p>");
}
client.println("</body></html>");
// Display current state, and ON/OFF buttons for GPIO 5 Yellow LED
client.println("<p>Yellow LED is " + outputYellowState + "</p>");
// If the outputYellowState is off, it displays the OFF button
if (outputYellowState == "off") {
client.println("<p><a href=\"/5/on\"><button class=\"button buttonOff\">OFF</button></a></p>");
} else {
client.println("<p><a href=\"/5/off\"><button class=\"button buttonYellow\">ON</button></a></p>");
}
client.println("</body></html>");
// The HTTP response ends with another blank line
client.println();
// Break out of the while loop
break;
} else { // if you got a newline, then clear currentLine
currentLine = "";
}
} else if (c != '\r') { // if you got anything else but a carriage return character,
currentLine += c; // add it to the end of the currentLine
}
}
}
// Clear the header variable
header = "";
// Close the connection
client.stop();
Serial.println("Client disconnected.");
Serial.println("");
}
}