ESP32 – WebServer Settings

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Some testing for Savable Settings via a WebServer

Starter Code Still in Progress

				
					//    _  ___          __   _     _
//   | || \ \        / /  | |   (_)
//   | || |\ \  /\  / /__ | |__  _
//   |__   _\ \/  \/ / _ \| '_ \| |
//      | |  \  /\  / (_) | |_) | |
//      |_|   \/  \/ \___/|_.__/|_|.com
//

// Import required libraries
#include <WiFiManager.h>
#include <AsyncTCP.h>
#include <ESPAsyncWebServer.h>
#include "EEPROM.h"

#include "html.h"

const char* PARAM_INPUT_1 = "output";
const char* PARAM_INPUT_2 = "state";

// Create AsyncWebServer object on port 80
AsyncWebServer server(80);

// Replaces placeholder with button section in your web page
String processor(const String& var) {
  //Serial.println(var);
  if (var == "BUTTONPLACEHOLDER") {
    String buttons = "";
    buttons += "<h4>Output - GPIO 2</h4><label class=\"switch\"><input type=\"checkbox\" onchange=\"toggleCheckbox(this)\" id=\"5\" " + outputState(5) + "><span class=\"slider\"></span></label>";
    buttons += "<h4>Output - GPIO 0</h4><label class=\"switch\"><input type=\"checkbox\" onchange=\"toggleCheckbox(this)\" id=\"3\" " + outputState(3) + "><span class=\"slider\"></span></label>";
    buttons += "<h4>Output - GPIO 4</h4><label class=\"switch\"><input type=\"checkbox\" onchange=\"toggleCheckbox(this)\" id=\"4\" " + outputState(4) + "><span class=\"slider\"></span></label>";
    return buttons;
  }
  return String();
}

String outputState(int output) {
  if (digitalRead(output)) {
    return "checked";
  }
  else {
    return "";
  }
}

void EEPROMSetup() {
  // STARTING EEPROM
  if (!EEPROM.begin(1000)) {
    Serial.println("Failed to initialise EEPROM");
    Serial.println("Restarting...");
    delay(1000);
    ESP.restart();
  }

  int address = 0;

  EEPROM.writeFloat(address, 421321.134123);
  address += sizeof(float);

  String sentence = "I love ESP32.";
  EEPROM.writeInt(address, sentence.length());
  address += sizeof(int);

  EEPROM.writeString(address, sentence);
  address += sentence.length() + 1;

  EEPROM.writeDouble(address, -123456789.123456789);
  address += sizeof(double);

  EEPROM.commit();
  address = 0;

  Serial.println(EEPROM.readFloat(address), 4);
  address += sizeof(float);

  int i = EEPROM.readInt(address);
  Serial.println(i);
  address += sizeof(int);

  Serial.println(EEPROM.readString(address));
  address += i + 1;

  Serial.println(EEPROM.readDouble(address), 8);
  address += sizeof(double);
  
}

void setup() {
  // Serial port for debugging purposes
  Serial.begin(115200);
  while (!Serial) continue;

  pinMode(5, OUTPUT);
  digitalWrite(5, LOW);
  pinMode(3, OUTPUT);
  digitalWrite(3, LOW);
  pinMode(4 , OUTPUT);
  digitalWrite(4, LOW);

  EEPROMSetup();

  // Connect to Wi-Fi
  WiFi.mode(WIFI_STA); // explicitly set mode, esp defaults to STA+AP
  WiFiManager wm;

  //wm.resetSettings();


  bool res; // WifiManager
  res = wm.autoConnect("AutoConnectAP", "password"); // password protected ap
  if (!res) {
    Serial.println("Failed to connect");
    // ESP.restart();
  }
  else {
    //if you get here you have connected to the WiFi
    Serial.println("connected...yeey :)");
  }

  // Print ESP Local IP Address
  // Serial.println(WiFi.localIP());

  // Route for root / web page
  server.on("/", HTTP_GET, [](AsyncWebServerRequest * request) {
    request->send_P(200, "text/html", index_html, processor);
  });

  // Send a GET request to <ESP_IP>/update?output=<inputMessage1>&state=<inputMessage2>
  server.on("/update", HTTP_GET, [] (AsyncWebServerRequest * request) {
    String inputMessage1;
    String inputMessage2;
    // GET input1 value on <ESP_IP>/update?output=<inputMessage1>&state=<inputMessage2>
    if (request->hasParam(PARAM_INPUT_1) && request->hasParam(PARAM_INPUT_2)) {
      inputMessage1 = request->getParam(PARAM_INPUT_1)->value();
      inputMessage2 = request->getParam(PARAM_INPUT_2)->value();
      digitalWrite(inputMessage1.toInt(), inputMessage2.toInt());
    }
    else {
      inputMessage1 = "No message sent";
      inputMessage2 = "No message sent";
    }
    Serial.print("GPIO: ");
    Serial.print(inputMessage1);
    Serial.print(" - Set to: ");
    Serial.println(inputMessage2);
    request->send(200, "text/plain", "OK");
  });

  // Start server
  server.begin();
}

void loop() {

}
				
			
				
					#ifndef HTML_H
#define HTML_H

const char index_html[] PROGMEM = R"rawliteral(
<!DOCTYPE HTML><html>
<head>
  <title>ESP Web Server</title>
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="icon" href="data:,">
  
</head>
<body>
  <h2>ESP Wobi Web Server</h2>
  
  <label for="marriageDate">Hochzeitstag</label><br>
  <input type="date" id="marriageDate" name="marriageDate"><br>
  
  <label for="weatherApiKey">Wetter API Key</label><br>
  <input type="text" id="weatherApiKey" name="weatherApiKey"><br>
  
  <label for="longitude">Laengengrad </label><br>
  <input type="number" step="any" id="longitude" name="longitude"><br>
  
  <label for="latitude">Breitengrad</label><br>
  <input type="number" step="any" id="latitude" name="latitude"><br>


  <input type="button" onclick="alert('saved!')" value="Save"><br>

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</html>
)rawliteral";

#endif
				
			

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