RFID attendance

I am a ID card manufacturer in kolkata . we provide id card for student . One day when we consulting with my head master suddenly show that there is so many(lot of ) attendance book stag on a rack and hard some shocking story about some missing student . And attempted to create a new gen attendance m/c .

** This module can :

            ~ Read TAG ID with a simple swap upon reader 

            ~ store record with internal sd card  

            ~  send sms from Server after every attendance.

/*
 *  This sketch sends data via HTTP GET requests to data.sparkfun.com service.
 *
 *  You need to get streamId and privateKey at data.sparkfun.com and paste them
 *  below. Or just customize this script to talk to other HTTP servers.
 *
 */

#include 
#include 
#include "MFRC522.h"

#define RST_PIN  5 // RST-PIN für RC522 - RFID - SPI - Modul GPIO5 
#define SS_PIN  2  // SDA-PIN für RC522 - RFID - SPI - Modul GPIO2 

const char* ssid     = "ARDIND_B";
const char* password = "***************";

const char* host = "progoti.in";
//const char* streamId   = "....................";
//const char* privateKey = "....................";
int devstts=0;
MFRC522 mfrc522(SS_PIN, RST_PIN);

void setup() {
  pinMode(16, OUTPUT);
  pinMode(15, OUTPUT);
  pinMode(4, OUTPUT);
  Serial.begin(115200);
  delay(100);
   

  // We start by connecting to a WiFi network

  Serial.println();
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);

  SPI.begin();           // Init SPI bus
  mfrc522.PCD_Init();    // Init MFRC522
  
  WiFi.begin(ssid, password);
  
   int retries = 0;
   while ((WiFi.status() != WL_CONNECTED) && (retries < 10)) {
     retries++;
     delay(500);
     Serial.print(".");

  }

  Serial.println("");
  Serial.println(" WiFi connected");  
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
  Serial.println(F("Ready!"));
  Serial.println(F("======================================================")); 
  Serial.println(F("Scan for Card and print UID:"));
  Serial.print("connecting to ");
  Serial.println(host);
  
  // Use WiFiClient class to create TCP connections
  WiFiClient client;
  const int httpPort = 80;
  if (!client.connect(host, httpPort)) {
    Serial.println("connection failed");
       digitalWrite(16, HIGH);   // turn the LED on (HIGH is the voltage level)
       delay(10000);              // wait for a second
       digitalWrite(16, LOW);
    return;
   }
  
  // We now create a URI for the request
  
  String url = "/proj/getdevstts.php?name=amr1257";
 
  Serial.print("Requesting URL: ");
  Serial.println(url);
  
  // This will send the request to the server
  client.print(String("GET ") + url + " HTTP/1.1\r\n" +
               "Host: " + host + "\r\n" + 
               "Connection: close\r\n\r\n");
  delay(10);
  
  // Read all the lines of the reply from server and print them to Serial
  while(client.available()){
    String line = client.readStringUntil('\r');
    Serial.print(line);
    line.trim();
    if (line.equals("in-mode"))
    {
        Serial.println("IN-MODE");
        digitalWrite(4, HIGH);    // turn the out LED on 
        devstts=1;             //set the device as out mode
    }
    if (line.equals("out-mode"))
    {
        Serial.println("OUT-MODE");
        digitalWrite(15, HIGH);    // turn the out LED on 
        devstts=2;             //set the device as out mode
    }
 }
    
  Serial.println();
  Serial.println("closing connection");
}

int value = 0;
String readIDold;
void loop() 

{ 
  // Look for new cards
  if ( ! mfrc522.PICC_IsNewCardPresent()) {
    delay(50);
    return;
  }
  // Select one of the cards
  if ( ! mfrc522.PICC_ReadCardSerial()) {
    delay(50);
    return;
  }
  // Show some details of the PICC (that is: the tag/card)
  Serial.print(F("Card UID:"));
  dump_byte_array(mfrc522.uid.uidByte, mfrc522.uid.size);
  Serial.println();

  String readID = "s";
  for (byte i = 0; i < mfrc522.uid.size; i++) {
    readID += mfrc522.uid.uidByte[i];
  }
    
  if(readID!=readIDold)
  {
    readIDold=readID;
  Serial.print("connecting to ");
  Serial.println(host);
  
  // Use WiFiClient class to create TCP connections
  WiFiClient client;
  const int httpPort = 80;
  if (!client.connect(host, httpPort)) {
    //client.println("GET /search?q=arduino HTTP/1.0");
    Serial.println("connection failed");
       digitalWrite(16, HIGH);   // turn the LED on (HIGH is the voltage level)
       delay(10000);              // wait for a second
       digitalWrite(16, LOW);
    return;
   }
  
  // We now create a URI for the request
  
  String url = "/proj/getnmid.php?name=amr1257&id=";
  url += readID;

  Serial.print("Requesting URL: ");
  Serial.println(url);
  
  // This will send the request to the server
  client.print(String("GET ") + url + " HTTP/1.1\r\n" +
               "Host: " + host + "\r\n" + 
               "Connection: close\r\n\r\n");
  delay(10);
  
  // Read all the lines of the reply from server and print them to Serial
  while(client.available()){
    String line = client.readStringUntil('\r');
    Serial.print(line);
    line.trim();
    if (line.equals("Change-mode"))
    {
      if (devstts==1)
      {
        Serial.println("OUT-MODE");
        digitalWrite(4, LOW);
        digitalWrite(15, HIGH);// turn the in LED off
        devstts=2;             //set the device as out mode
      }
      else
      {
         Serial.println("IN-MODE");
         digitalWrite(15, LOW);
         digitalWrite(4, HIGH);    // turn the in LED on
        devstts=1;
      } 
    }
    if (line.equals("In-mode"))
    {
       Serial.println("IN-MODE");
       digitalWrite(4, HIGH);// turn the in LED on
       devstts=1;  
    }
  }
    
  Serial.println();
  Serial.println("closing connection");
  digitalWrite(16, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);              // wait for a second
  digitalWrite(16, LOW);    // turn the LED off by making the voltage LOW

  }
  else
  {
      Serial.print("Weating For New Card");
  }
  
}

// Helper routine to dump a byte array as hex values to Serial
void dump_byte_array(byte *buffer, byte bufferSize) {
  for (byte i = 0; i < bufferSize; i++) {
    Serial.print(buffer[i] < 0x10 ? " 0" : " ");
    Serial.print(buffer[i], HEX);
  }
}

After a long time experiment realize that this module can send a unic  number with every individual card and upload time attachment . One station module is there to collect RFID card or Your ID card (we are using 1k rfid ).

     At the first time when I realize that this module is working...Over internet I get response from url http://progoti.in/proj1/vunmid.php 

amr1257 ID - s11218413446 Date - 2016-01-15 Time- 09:53:13

amr1257 ID - s17614213446 Date - 2016-01-15 Time- 09:56:36

amr1257 ID - s17616113346 Date - 2016-01-15 Time- 09:56:49   

First part of this doc is ID and then Punching TIME

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