RFID_esp8266_wifi.cpp

/*
 *  This sketch sends a message to a TCP server
 *
 */
#include <SPI.h>
#include "MFRC522.h"
#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>

ESP8266WiFiMulti WiFiMulti;
// declaration 
byte myCards[] = { 0x06, 0x28, 0xFE, 0xE5, 0x44, 0x71, 0x2D, 0xA4 };

int successRead;        //if we get a succesful read of the card this variable turn to 1 and if we didn't 0

byte dummy = 0x00;

byte readCard[4];           // Stores scanned ID read from RFID Module
#define RST_PIN  4 // RST-PIN für RC522 - RFID - SPI - Modul GPIO15 
#define SS_PIN  2  // SDA-PIN für RC522 - RFID - SPI - Modul GPIO2 
MFRC522 mfrc522(SS_PIN, RST_PIN);  // Create MFRC522 instance.

//fonc
void setup() {
    Serial.begin(115200);
    delay(10);
    SPI.begin();
    mfrc522.PCD_Init();    // Init MFRC522
    // We start by connecting to a WiFi network
    WiFiMulti.addAP("virginmedia8953826", "pmafvcty");

    Serial.println();
    Serial.println();
    Serial.print("Wait for WiFi... ");

    while(WiFiMulti.run() != WL_CONNECTED) {
        Serial.print(".");
        delay(500);
    }

    Serial.println("");
    Serial.println("WiFi connected");
    Serial.println("IP address: ");
    Serial.println(WiFi.localIP());

    delay(500);
}
int getID() {
    // Getting ready for Reading PICCs
    if(!mfrc522.PICC_IsNewCardPresent()) { //If a new PICC placed to RFID reader continue
        return 0;
    }
    if(!mfrc522.PICC_ReadCardSerial()) { //Since a PICC placed get Serial and continue
        return 0;
    }

    //Serial.println("Scanned UID:");
    for(int i = 0; i < 4; i++) {  // 
        readCard[i] = mfrc522.uid.uidByte[i];
        //Serial.print(readCard[i], HEX);
    }
    //Serial.println("");
    mfrc522.PICC_HaltA(); // Stop reading
    return 1;
}

void Success() {

}

void Error() {
    Serial.println("Stranger");

}

void loop() {
    const uint16_t port = 2222;
    const char * host = "192.168.0.21"; // ip or dns

    do {
        successRead = getID();
        delay(0); // new 
    } while(!successRead);

    Serial.print("connecting to ");
    Serial.println(host);

    // Use WiFiClient class to create TCP connections
    WiFiClient client;

    if(!client.connect(host, port)) {
        Serial.println("connection failed");
        Serial.println("wait 5 sec...");
        delay(5000);
        return;
    }
    
    if(readCard[0] == myCards[4] && readCard[1] == myCards[5] && readCard[2] == myCards[6] && readCard[3] == myCards[7])              //checking for blue card
    {

        Serial.println("Jose Molina perez");

        Success();

        for(int i = 0; i < 4; i++)
            dummy = readCard[i];   // removing previous stored value from the readCard variable

        successRead = 0;
    } else if(readCard[0] == myCards[0] && readCard[1] == myCards[1] && readCard[2] == myCards[2] && readCard[3] == myCards[3])            //checking for white card
    {
        client.print("username + :has connected.:Connect:+lastname+:+txt_Time.getText()");            //normal message

        Success();      //calling the success function

        for(int i = 0; i < 4; i++)
            dummy = readCard[i];  // removing previous stored value from the readCard variable
    } else {
        Error();      //calling the error function
    }
    // This will send the request to the server

    //read back one line from server
    String line = client.readStringUntil('\r');
    client.println(line);

    Serial.println("closing connection");
    //client.stop();

    Serial.println("wait 5 sec...");
    delay(5000);
}