new_ffs.ino

#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include "FS.h"
//SSID and Password of your WiFi router
const char* ssid = "MY_SSID";
const char* password = "jignesh123";
String data,data1;
const int A=D1;
const int B=D2;
const int C=D3;
const int D=D4;
const int E=D6;
const int F=D7;
const int G=D8;
ESP8266WebServer server(80); //Server on port 80
//==============================================================
//                  SETUP
//==============================================================
void setup(void){
  pinMode(A,OUTPUT);  digitalWrite(A,LOW);
  pinMode(B,OUTPUT);  digitalWrite(B,LOW);
  pinMode(C,OUTPUT);  digitalWrite(C,LOW);
  pinMode(D,OUTPUT);  digitalWrite(D,LOW);
  pinMode(E,OUTPUT);  digitalWrite(E,LOW);
  pinMode(F,OUTPUT);  digitalWrite(F,LOW);
  pinMode(G,OUTPUT);  digitalWrite(G,LOW);
  Serial.begin(115200);
  WiFi.mode(WIFI_STA);                                       //ESP8266 operates on Station(client) mode only 
  WiFi.begin(ssid, password);                                //Connect to your WiFi router
  Serial.println("");
 
  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  //If connection successful show IP address in serial monitor
  Serial.println("");
  Serial.print("Connected to ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());                            //IP address assigned to your ESP
  prepareFile();                                             //Loads and open html file from SPIFFS
  server.on("/",HTTP_GET,handleRoot);                        //Which routine to handle at root location
  server.on("/submit", HTTP_POST ,handleSubmit);
  server.on("/main.js",[](){                                 //Loading the javascript file from SPIFFS
    loadScript("/main.js","application/javascript");
  });
  server.begin();                                            //Start server
  Serial.println("HTTP server started");
}
//==============================================================
//                     LOOP
//==============================================================
void loop(void){
  server.handleClient();          //Handle client requests
}
//===============================================================
// This routine is executed when you open its IP in browser
//===============================================================
void handleRoot() { 
 server.send(200, "text/html", data); //Send web page
}
//=============================================================================
// This routine is executed when server get data from the form of root html page
//=============================================================================
void handleSubmit(){
  if( ! server.hasArg("nam")|| server.arg("nam") == NULL){
    server.send(400, "text/plain", "400: Invalid Request"); 
    return;
  }
  if(server.arg("nam") == "0") { 
    server.send(200, "text/html", data1);
    sevenSeg(0);
  }
  else if(server.arg("nam") == "1") { 
    server.send(200, "text/html", data1);
    sevenSeg(1);
  }
  else if(server.arg("nam") == "2") { 
    server.send(200, "text/html", data1);
    sevenSeg(2);
  }
  else if(server.arg("nam") == "3") { 
    server.send(200, "text/html", data1);
    sevenSeg(3);
  }
  else if(server.arg("nam") == "4") { 
    server.send(200, "text/html", data1);
    sevenSeg(4);
  }
  else if(server.arg("nam") == "5") { 
    server.send(200, "text/html", data1);
    sevenSeg(5);
  }
  else if(server.arg("nam") == "6") { 
    server.send(200, "text/html", data1);
    sevenSeg(6);
  }
  else if(server.arg("nam") == "7") { 
    server.send(200, "text/html", data1);
    sevenSeg(7);
  }
  else if(server.arg("nam") == "8") { 
    server.send(200, "text/html", data1);
    sevenSeg(8);
  }
  else if(server.arg("nam") == "9") { 
    server.send(200, "text/html", data1);
    sevenSeg(9);
  }
  else { 
    server.send(401, "text/plain", "401: Unauthorized");
  }
  }
void prepareFile(){
  bool ok = SPIFFS.begin();
  if (ok) {
    File f = SPIFFS.open("/index.html", "r");
    File f1=SPIFFS.open("/index1.html","r");
    data = f.readString();
    data1=f1.readString();
    f.close();
    f1.close(); 
    }
  else 
      Serial.println("No such file found.");
  }
void loadScript(String path,String type){
   if(SPIFFS.exists(path)){
     File file=SPIFFS.open(path,"r");
     server.streamFile(file,type);
     }
   }
//=========================================================================================
// This routine is called from handleSubmit() to control our 7 segment LED display(hardware)
//=========================================================================================
void sevenSeg(int num){ 
   if(num==0){
     onA(); onB(); onC(); onD(); onE(); onF();
      offG();
      }
    else if(num==1){
      onB(); onC();
      offA(); offD(); offE(); offF(); offG();
      }
    else if(num==2){
      onA(); onB(); onG(); onE(); onD();
      offF(); offC();
      }
    else if(num==3){
      onA(); onB(); onG(); onC(); onD();
      offE(); offF();
      }
    else if(num==4){
      onF(); onG(); onB(); onC();
      offA(); offE(); offD();
      }
    else if(num==5){
      onA(); onF(); onG(); onC(); onD();
      offB(); offE();
      }
    else if(num==6){
      onA(); onC(); onD(); onE(); onF(); onG();
      offB();
      }
    else if(num==7){
      onA(); onB(); onC();
      offD(); offE(); offF(); offG();
      }
    else if(num==8){
      onA(); onB(); onC(); onD(); onE(); onF(); onG();
      }
    else if(num==9){
      onA(); onB(); onC(); onF(); onG();
      offE(); offD();
      } 
}
/*THESE FUNCTIONS ARE SELF EXPLATNATORY FOR CONTROLLING(ON/OFF) THE 7SEGMENT LED DISPLAY */
void onA(){ digitalWrite(A,HIGH);} void offA(){ digitalWrite(A,LOW);}
void onB(){ digitalWrite(B,HIGH);} void offB(){ digitalWrite(B,LOW);}
void onC(){ digitalWrite(C,HIGH);} void offC(){ digitalWrite(C,LOW);}
void onD(){ digitalWrite(D,HIGH);} void offD(){ digitalWrite(D,LOW);}
void onE(){ digitalWrite(E,HIGH);} void offE(){ digitalWrite(E,LOW);}
void onF(){ digitalWrite(F,HIGH);} void offF(){ digitalWrite(F,LOW);}
void onG(){ digitalWrite(G,HIGH);} void offG(){ digitalWrite(G,LOW);}