ESP8266 RC522

One 、 Read the card information

#include <SPI.h>
#include <MFRC522.h>
#define RST_PIN 5 //  Configure pins 
#define SS_PIN 4
MFRC522 mfrc522(SS_PIN, RST_PIN);   //  Create a new RFID example 
MFRC522::MIFARE_Key key;
void setup() {
    
  Serial.begin(9600); //  Set the serial port baud rate to 9600
  SPI.begin();        // SPI Start 
  mfrc522.PCD_Init(); // Init MFRC522 card
  Serial.println("test-demo-start");
}


void loop() {
    
  //  Looking for a new card 
  if ( ! mfrc522.PICC_IsNewCardPresent()) {
    
    //Serial.println(" No card found ");
    return;
  }

  //  Select a card 
  if ( ! mfrc522.PICC_ReadCardSerial()) {
    
    Serial.println(" There are no cards to choose from ");
    return;
  }


  //  Show card details 
  Serial.print(F(" card  UID:"));
  dump_byte_array(mfrc522.uid.uidByte, mfrc522.uid.size);
  Serial.println();
  Serial.print(F(" Card type : "));
  MFRC522::PICC_Type piccType = mfrc522.PICC_GetType(mfrc522.uid.sak);
  Serial.println(mfrc522.PICC_GetTypeName(piccType));

  //  Check compatibility 
  if (    piccType != MFRC522::PICC_TYPE_MIFARE_MINI
          &&  piccType != MFRC522::PICC_TYPE_MIFARE_1K
          &&  piccType != MFRC522::PICC_TYPE_MIFARE_4K) {
    
    Serial.println(F(" Just for Mifare Classic Card reading and writing "));
    return;
  }

  MFRC522::StatusCode status;
  if (status != MFRC522::STATUS_OK) {
    
    Serial.print(F(" Authentication failed ？ Or the card link failed "));
    Serial.println(mfrc522.GetStatusCodeName(status));
    return;
  }
  // stop it  PICC
  mfrc522.PICC_HaltA();
  // Stop encryption PCD
  mfrc522.PCD_StopCrypto1();
  return;
}

/**  Dump byte arrays into serial hexadecimal values  */
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);
  }
}

Two 、 The whole program

//RC522
#define BLINKER_WIFI

#include <Blinker.h>
#include <SPI.h>
#include <String.h>
#include <MFRC522.h>
#define SS_PIN 4
#define RST_PIN 5
MFRC522 rfid(SS_PIN, RST_PIN); 
byte nuidPICC[4];
int  a_1=1;
// initialization 
char auth[] = "eb6b127b98b2";
char ssid[] = "ESP8266";
char pswd[] = "12345678";

//  New component object 
BlinkerButton Button1("btn-abc");

//  Press the key to execute the function 
void button1_callback(const String & state) {
    
    BLINKER_LOG("get button state: ", state);
    digitalWrite(LED_BUILTIN, !digitalRead(LED_BUILTIN));
    Serial.print("S");
}

void setup() 
{
    
  Serial.begin(115200);
  //SPI
  SPI.begin();
  rfid.PCD_Init(); 
      pinMode(LED_BUILTIN, OUTPUT);
    digitalWrite(LED_BUILTIN, HIGH);
    //  initialization blinker
    Blinker.begin(auth, ssid, pswd);
    Button1.attach(button1_callback);
    // Set pin 
}

//hex
void printHex(byte *buffer, byte bufferSize)
{
    
for (byte i = 0; i < bufferSize; i++)
  {
    
//Serial.print(buffer[i] < 0x10 ? " 0" : "");
//Serial.print(buffer[i], HEX);
  }
}
//================== For opening the door ================//
void printDec(byte *buffer, byte bufferSize)
{
    
for (byte i = 0; i < bufferSize; i++) {
    
//Serial.print(buffer[i] < 0x10 ? " 0" : "");
//Serial.print(buffer[i], DEC);
}
// personnel 1
if(nuidPICC[0]==0xAA&& nuidPICC[1]==0xFD && nuidPICC[2]==0xA9 && nuidPICC[3]==0x26)//  Card number ID
{
    
Serial.print("1");
 a_1=1;
 // It's open here 
 }
// personnel 2 
  else if (nuidPICC[0]==0xAA&& nuidPICC[1]==0xF9 && nuidPICC[2]==0xD9 && nuidPICC[3]==0x26)
{
    
Serial.print("2");
 a_1=1;
 // It's open here 
  }
// personnel 3 

  else if (nuidPICC[0]==0xAA&& nuidPICC[1]==0xE1 && nuidPICC[2]==0x11 && nuidPICC[3]==0x26)
{
    
Serial.print("3");
 a_1=1;
 // It's open here 
  }
// personnel 4 
  else if (nuidPICC[0]==0xAA&& nuidPICC[1]==0x99 && nuidPICC[2]==0x3F && nuidPICC[3]==0xAD)
{
     Serial.print("4");
 a_1=1;
 // It's open here 
  }
// personnel 5 
  else if (nuidPICC[0]==0x25&& nuidPICC[1]==0x5C && nuidPICC[2]==0x42 && nuidPICC[3]==0x25)
{
    
Serial.print("5");
 a_1=1;
 // It's open here 
  }
// personnel 6 

  else if (nuidPICC[0]==0x25&& nuidPICC[1]==0x5C && nuidPICC[2]==0x42 && nuidPICC[3]==0x25)
{
    
Serial.print("6");
 a_1=1;
 // It's open here 
  }
// personnel 7 

  else if (nuidPICC[0]==0x35&& nuidPICC[1]==0xB3 && nuidPICC[2]==0x70 && nuidPICC[3]==0x50)
{
    
Serial.print("7");
 a_1=1;
 // It's open here 
  }
// personnel 8 

  else if (nuidPICC[0]==0x39&& nuidPICC[1]==0x8E && nuidPICC[2]==0x3B && nuidPICC[3]==0x10)
{
    
Serial.print("8");
 a_1=1;
 // It's open here 
  }
// personnel 9 

  else if (nuidPICC[0]==0x25&& nuidPICC[1]==0xBA && nuidPICC[2]==0x3C && nuidPICC[3]==0x50)
{
    
Serial.print("9");
 a_1=1;
 // It's open here 
  }
// personnel 10 

  else if (nuidPICC[0]==0x35&& nuidPICC[1]==0x65 && nuidPICC[2]==0x95 && nuidPICC[3]==0x50)
{
    
Serial.print("0");
 a_1=1;
 // It's open here 
  }
}
// register + distinguish 
void zhuce(){
    
  if ( ! rfid.PICC_IsNewCardPresent())
return;
  if ( ! rfid.PICC_ReadCardSerial())
return;
MFRC522::PICC_Type piccType = rfid.PICC_GetType(rfid.uid.sak); //  take NUID Save to nuidPICC Array 
for (byte i = 0; i < 4; i++)
  {
    
nuidPICC[i] = rfid.uid.uidByte[i];
  }
//Serial.print(" Hexadecimal UID：");
printHex(rfid.uid.uidByte, rfid.uid.size); //Hex:16 Base number 
//Serial.println();
// 
//Serial.print(" Decimal system UID：");
printDec(rfid.uid.uidByte, rfid.uid.size); //Dec:10 Base number 
//Serial.println();
 
//  Put in the card reading area IC The card goes to sleep , No more repeat card reading ,Halt( stop it )
rfid.PICC_HaltA();
//  Stop reading card module encoding 
rfid.PCD_StopCrypto1();
  }

void loop(){
    
zhuce();
Blinker.run();
}

3、 ... and 、 connection