Cafetera.ino

#include <SPI.h>
#include <MFRC522.h>
#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>
#define SS_PIN D4
#define RST_PIN D2
#include <WiFiClientSecure.h>
int LED =15;
ESP8266WiFiMulti WiFiMulti;
MFRC522 mfrc522(SS_PIN, RST_PIN);   
MFRC522::MIFARE_Key key;
WiFiClientSecure client;
int correcto=0;
int numtarjeta;
void dump_byte_array(byte *buffer, byte bufferSize);
const char* host = "script.google.com"; 
String url;


void setup() {
    Serial.begin(9600); // Initialize serial communications with the PC
    while (!Serial);    // Do nothing if no serial port is opened (added for Arduinos based on ATMEGA32U4)
    SPI.begin();        // Init SPI bus
    mfrc522.PCD_Init(); // Init MFRC522 card
    WiFi.mode(WIFI_STA);
    WiFiMulti.addAP("SSID", "Pass");
    pinMode(LED,OUTPUT);
    while (WiFiMulti.run() != WL_CONNECTED) {
      Serial.print(".");
      delay(500);
    } 
    Serial.println("");
    Serial.println("WiFi connected");
    Serial.println("IP address: ");
    Serial.println(WiFi.localIP());
    // Prepare the key (used both as key A and as key B)
    // using FFFFFFFFFFFFh which is the default at chip delivery from the factory
    for (byte i = 0; i < 6; i++) {
        key.keyByte[i] = 0xFF;
    }

}

/**
 * Main loop.
 */
void loop() {
    
    WiFiClientSecure client;
    const int httpPort = 443;
    if (!client.connect(host, httpPort)) 
    {
      Serial.println("connection failed");
      return;
    }

    // Look for new cards
    if ( ! mfrc522.PICC_IsNewCardPresent())
        return;

    // Select one of the cards
    if ( ! mfrc522.PICC_ReadCardSerial())
        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();
    Serial.print(F("PICC type: "));
    MFRC522::PICC_Type piccType = mfrc522.PICC_GetType(mfrc522.uid.sak);
    Serial.println(mfrc522.PICC_GetTypeName(piccType));

    // Check for compatibility
    if (    piccType != MFRC522::PICC_TYPE_MIFARE_MINI
        &&  piccType != MFRC522::PICC_TYPE_MIFARE_1K
        &&  piccType != MFRC522::PICC_TYPE_MIFARE_4K) {
        Serial.println(F("This sample only works with MIFARE Classic cards."));
        return;
    }

    // In this sample we use the second sector,
    // that is: sector #1, covering block #4 up to and including block #7
    byte sector         = 1;
    byte blockAddr      = 4;
    byte trailerBlock   = 7;
    MFRC522::StatusCode status;
    byte buffer[18];
    byte size = sizeof(buffer);

    // Authenticate using key A
    status = (MFRC522::StatusCode) mfrc522.PCD_Authenticate(MFRC522::PICC_CMD_MF_AUTH_KEY_A, trailerBlock, &key, &(mfrc522.uid));
    if (status != MFRC522::STATUS_OK) {
        Serial.print(F("PCD_Authenticate() failed: "));
        Serial.println(mfrc522.GetStatusCodeName(status));
        correcto=0;
        return;
    }

    // Show the whole sector as it currently is
    Serial.println(F("Current data in sector:"));
    mfrc522.PICC_DumpMifareClassicSectorToSerial(&(mfrc522.uid), &key, sector);
    Serial.println();

    // Read data from the block
    Serial.print(F("Reading data from block ")); Serial.print(blockAddr);
    Serial.println(F(" ..."));
    status = (MFRC522::StatusCode) mfrc522.MIFARE_Read(blockAddr, buffer, &size);
    if (status != MFRC522::STATUS_OK) {
        Serial.print(F("MIFARE_Read() failed: "));
        Serial.println(mfrc522.GetStatusCodeName(status));
    }
   

    // Authenticate using key B
    Serial.println(F("Authenticating again using key B..."));
    status = (MFRC522::StatusCode) mfrc522.PCD_Authenticate(MFRC522::PICC_CMD_MF_AUTH_KEY_B, trailerBlock, &key, &(mfrc522.uid));
    if (status != MFRC522::STATUS_OK) {
        Serial.print(F("PCD_Authenticate() failed: "));
        Serial.println(mfrc522.GetStatusCodeName(status));
        return;
    }
    Serial.println();

    
 
    if(<Authentication method>){
      correcto=1;
      numtarjeta=buffer[5];
      digitalWrite(LED,HIGH);
      delay(500);
    }else{
      correcto=0;
      digitalWrite(LED,LOW);
    }
   
    if (correcto==1) {
        Serial.println(F("Tarjeta valida :-)"));
        Serial.print("Tarjeta numero: ");
        Serial.print(numtarjeta,DEC);
        if (!client.connect(host, httpPort)) 
        {
        Serial.println("connection failed");
        return;
        }
        url = "<Your URL here with the form /macros/s/GScriptId/exec?func...>"+ String(numtarjeta);
        client.print(String("GET ") + url + " HTTP/1.1\r\n" + "Host: " + host + "\r\n" + "Connection: close\r\n\r\n");
               
        correcto=0;
        digitalWrite(LED,LOW);
          
        }
    else { 
    }
    
    Serial.println();
    // Halt PICC
    mfrc522.PICC_HaltA();
    // Stop encryption on PCD
    mfrc522.PCD_StopCrypto1();
    
}




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);
    }
}