Question is, how can I send this infos from multiple ESP32 boards into one website?
(Image below)
Thanks.
Code: Select all
#include <WiFi.h>
int hall_reading = 0;
boolean LED_state; // true means ON; false means OFF
const char* ssid = "ssid";
const char* password = "password";
WiFiServer server(80);
void setup()
{
Serial.begin(115200);
pinMode(5, OUTPUT); // set the LED pin mode
digitalWrite(5, HIGH);
LED_state = true;
delay(10);
// We start by connecting to a WiFi network
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected.");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
server.begin();
}
int value = 0;
void loop(){
WiFiClient client = server.available(); // listen for incoming clients
if (client) { // if you get a client,
Serial.println("New Client."); // print a message out the serial port
String currentLine = ""; // make a String to hold incoming data from the client
while (client.connected()) { // loop while the client's connected
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
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();
// the content of the HTTP response follows the header:
// 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
}
// Check to see if the client request was "GET /H" or "GET /L":
if (currentLine.endsWith("GET /H")) {
digitalWrite(5, HIGH); // GET /H turns the LED on
}
if (currentLine.endsWith("GET /L")) {
digitalWrite(5, LOW); // GET /L turns the LED off
}
}
}
hall_reading = hallRead();
Serial.print("Hallr reading: ");
Serial.println(hall_reading);
//when no magnet
if(hall_reading >= -10 && hall_reading <= 50){
if(LED_state){
digitalWrite(5, HIGH);
LED_state = false;
client.print("NOTHING FALSE");
}else {
digitalWrite(5, HIGH);
LED_state = true;
client.print("NOTHING TRUE");
}
//when reading is greater than 50, turn on LED
}else if(hall_reading > 50){
digitalWrite(5, LOW);
LED_state = true;
client.print("TOP");
//when reading is less than -10, turn off LED
}else if(hall_reading < -10){
digitalWrite(5, LOW);
LED_state = false;
client.print("BOTTOM");
}
client.print("<A HREF=\"javascript:history.go(0)\"><br>Click to refresh the page</A>");
delay(500);
// close the connection:
client.stop();
Serial.println("Client Disconnected.");
}
}