LILiK
/
ESP_fan_Controller

#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#include <ESPAsyncWebServer.h>
#include <AsyncElegantOTA.h>
#include <Wire.h>

AsyncWebServer server(80);
#define FAN_PIN 2
#define DELAY_TIME 1000 // time between measurements [ms]

// This next section specifies variables and constants needed by the code snippet to convert serial input from ASCII to int
#define numberOfDigits 3
char theNumberString[numberOfDigits + 1];int input;
// HTML based manual Fan speed input
const char* PARAM_INPUT_1 = "input1";
// WiFi settings
const char* ssid = "LILiK_WiFi";   //replace with your SSID
const char* password = "pippopippo"; //password
String hostname = "Ventole_Einstein";
// Default Fan Speed
int fanSpeedPercent = 20;
// HTML WEB interface
const char index_html[] PROGMEM = R"rawliteral(<!DOCTYPE HTML><html><head>  <title>ControllerVentoleEinstein</title>  <meta name="viewport" content="width=device-width, initial-scale=1">  </head><body>  <h2>Ciao! Sono l'ESP8266 che gestisce le ventole di Einstein (HP DL380p G8)</h2>      <form action="/get">        % manuale: <input type="number" name="input1">        <input type="submit" value="Submit">      </form><br>  <style>    html {font-family: Times New Roman; display: inline-block; text-align: center;}    h2 {font-size: 2.0rem;}    h3 {font-size: 2.0rem; color: #FF0000;}  </style>    <h2>Clicca qui sotto per aggiornare il firmware, o il secondo link per il sorgente.</h2>  <a href='/update'>&#11014;&#65039; OTA Firmware_Update &#11014;&#65039;</a>  <a href='https://github.com/francescocy/ESP_fan_controller'>&#128049;GitHub&#128025;</a><br><br>

</body></html>)rawliteral";
void notFound(AsyncWebServerRequest *request) {  request->send(404, "text/plain", "Not found");}
// the setup function runs once when you press reset or power the board
void setup(void) {  pinMode(FAN_PIN, OUTPUT);  analogWriteFreq(25000);  Serial.begin(115200);  WiFi.mode(WIFI_STA);  //  WiFi.config(INADDR_NONE, INADDR_NONE, INADDR_NONE, INADDR_NONE);
  WiFi.setHostname(hostname.c_str()); //define hostname
  WiFi.begin(ssid, password);  Serial.println("");
  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {    delay(500);    Serial.print(".");  }  Serial.println("");  Serial.print("Connected to ");  Serial.println(ssid);  Serial.print("IP address: ");  Serial.println(WiFi.localIP());
  // Send web page with input fields to client
  server.on("/", HTTP_GET, [](AsyncWebServerRequest * request) {    request->send(200, "text/html", index_html);  });
  // Send a GET request to <ESP_IP>/get?input1=<inputMessage>
server.on("/get", HTTP_GET, [] (AsyncWebServerRequest *request) {    String inputMessage;    String inputParam;    // GET input1 value on <ESP_IP>/get?input1=<inputMessage>
    if (request->hasParam(PARAM_INPUT_1)) {      inputMessage = request->getParam(PARAM_INPUT_1)->value();      inputParam = inputMessage;      if (inputMessage.toFloat() > 5 && inputMessage.toFloat() < 101) {        fanSpeedPercent = inputMessage.toFloat();      }    }  else {      inputMessage = "No message sent";      inputParam = "none";    }    Serial.print("Speed received from HTML page: " );    Serial.println(inputMessage);    request->send(200, "text/html", "HTTP GET request sent to your ESP on input field ("                                      + inputParam + ") with value: " + inputMessage +                                     "<br><a href=\"/\">Return to Home Page</a>");  });  server.onNotFound(notFound);  AsyncElegantOTA.begin(&server);    // Start ElegantOTA
  server.begin();  Serial.println("HTTP server started");  }
// the loop function runs over and over again forever
void loop() {  // Check if a serial interface is running
  if(Serial.available()){    // Check the first character: if it is "S" it will be followed by 3 digits for the fan speed
    // S025 = 25%
      if(Serial.read() == 'S')        {        for (int i = 0; i < numberOfDigits; theNumberString[i++] = Serial.read());        theNumberString[numberOfDigits] = 0x00;        input = atoi(theNumberString);        Serial.print("You typed: " );        Serial.println(input);        if (input > 4 && input < 101) {          fanSpeedPercent = input;        }        else {          Serial.print("Fan Speed out of Range!" );        }      }    }    Serial.print("Fan speed is ");  Serial.print(fanSpeedPercent);  Serial.println(" %");
  Serial.println();
  analogWrite(FAN_PIN, ((100 - fanSpeedPercent) / 100.0) * 255);  delay(1000);}