Need help. thanks

Using Arduino Programming Questions
1

#include <SPI.h>

#include <Ethernet.h>

#include <RFID.h>

#include <LiquidCrystal.h>

#define SDA_DIO 6 //rfid connection of spı

#define RESET_DIO 7 //rfid connection of spı

#define No_Of_Card 21 //total number of cards

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; //Setting MAC Address

char server[] = "192.168.0.103";

IPAddress ip(192,168,0,103);

EthernetClient client;

LiquidCrystal lcd(A0, A1, A2,A3, A4,A5);

RFID RC522(SDA_DIO, RESET_DIO); //rfid connection of spı

int buzzer = 5;

int led_green = 48;

int led_red = 49;

String card = "";

void redLED();

void greenLED();

void lowLEDS();

void Sending_To_phpmyadmindatabase();

int allowed_member=0; //defined card variable

int x=0;

//defined card ids

char *myStrings[No_Of_Card+1] = {"62001a",

"59c4a28b",

"d4685b9",

"c6fda21a",

"d63421a",

"8b57c69",

"c414ee49",};

void setup() {

Serial.begin(9600);

pinMode(led_green, OUTPUT);

pinMode(led_red, OUTPUT);

if (Ethernet.begin(mac) == 0) {

Serial.println("Failed to configure Ethernet using DHCP");

digitalWrite(led_red, HIGH);

Ethernet.begin(mac, ip);

}

else

lowLEDS();

Serial.println(server);

delay(1000);

lcd.begin(16, 2);

lcd.clear();

lcd.print("Ready...");

SPI.begin(); // run SPI library first; if not, RFID will not work

RC522.init();

tone(buzzer, 1200, 100);

delay(170);

tone(buzzer, 1200, 100);

delay(170);

tone(buzzer, 1200, 100);

delay(170);

tone(buzzer, 1200, 100);

delay(750);

}

void loop(){

lcd.noDisplay();

lcd.display(); // Turn on the display:

lcd.begin(16, 2);

lcd.print("Ready...");

if (RC522.isCard())

{

card = "";    

RC522.readCardSerial();

Serial.print("Card detected: ");

for(int i=0;i<4;i++)    

{

  card += String(RC522.serNum[i],HEX);

}

Serial.print(card);  

Serial.println();

for(x=0;x<No_Of_Card;x++){

  Serial.println(myStrings[x]);

  if(card==myStrings[x]){

    Serial.println("buldu");

    Serial.println(myStrings[x]);

    allowed_member=1;

    greenLED();

  }

}

  if(allowed_member!=1){

    allowed_member=0;

    redLED();    

  }

    

Sending_To_phpmyadmindatabase();

delay(300); // interval

}

}

//send of datas

void Sending_To_phpmyadmindatabase()

{

if (client.connect(server, 80)) {

Serial.println("connected");

Serial.print("GET /code/rfid.php?card=");

client.print("GET /code/rfid.php?card=");

Serial.println(card);

client.print(card);

client.print("&allowed_member=");

Serial.println("&allowed_member=");

Serial.println(allowed_member);

client.print(allowed_member);

client.print(" ");      //SPACE BEFORE HTTP/1.1

client.print("HTTP/1.1");

client.println();

client.println("Host: 192.168.0.103");

client.println("Connection: close");

client.println();

} else {

// if you didn't get a connection to the server:

Serial.println("connection failed");

}

delay(1000);

digitalWrite(led_green, LOW);

digitalWrite(led_red, LOW);

allowed_member=2;

}

void redLED(){

lcd.clear();

lcd.print("Error!");

digitalWrite(led_red, HIGH);

delay(200);

tone(buzzer, 1200, 80);

lcd.clear();

}

void greenLED(){

lcd.clear();

lcd.print("ok!");

digitalWrite(led_green, HIGH);

delay(200);

tone(buzzer, 300, 80);

lcd.clear();

}

void lowLEDS(){

digitalWrite(led_red, LOW);

digitalWrite(led_green, LOW);

}

C:\Users\hp\Downloads\extramus\access-20220204T104739Z-001\access\access_rfid\access_rfid.ino:43:10: fatal error: RFID.h: No such file or directory
#include <RFID.h>
^~~~~~~~
compilation terminated.
Compilation error: exit status 1}

2

Welcome to the forum

Please follow the advice given in the link below when posting code, in particular the section entitled 'Posting code and common code problems'

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3

Have you installed this library ?

4

yes, i downloaded <MFRC522.h> library

5

But the sketch does not use that library, it uses the RFID library

#include <RFID.h>

Have you tried the examples with the MFRC522 library ?

6

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