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Good day, I have this problem with my simple project. I have a database with all RFID number of employee. What I want to do is to use an rfID to check if it is registered in the database. If it is, it would return a value of 1 else would be a value of 0.

I tried with arduino HanRun Ethernet shield. I was able to get a response from the php web server to the serial monitor. Tried the seeedrfid it successfully get the rfcard number. However, when i tried to combine the two, it would hang on Ethernet.begin(mac, ip) initialization. My code is below.

#include <Ethernet.h>
#include <SoftwareSerial.h>
#include <SeeedRFID.h>

#define RFID_RX_PIN 10
#define RFID_TX_PIN 11

SeeedRFID RFID(RFID_RX_PIN, RFID_TX_PIN);

char state = '0';
char c;
byte mac[] = {0x60, 0xF8, 0x1D, 0xBA, 0x1D, 0x52};
IPAddress ip(192, 168, 20, 228);

EthernetClient client;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.println("Serial set up");

  Ethernet.begin(mac, ip);
  Serial.print("My IP Address: ");
  Serial.println(Ethernet.localIP());
}

void loop() {

  long rfID;
  // put your main code here, to run repeatedly:

  if (RFID.isAvailable()) {
    rfID = RFID.cardNumber();
    Serial.println(rfID);
  }
}

Serial.println(rfID) is not executed unless I remove the Ethernet.begin(mac, ip). Can anybody point me to the right direction?

  • It's NOT a HanRun Ethernet Shield! It's an unbranded Ethernet Shield happens to use a HanRun HR911105A RJ45 Socket with Integrated Magnetics on it. kosmodrom.com.ua/pdf/HR911105A.pdf – Majenko Aug 23 '17 at 10:02
  • What pins did you connect the RFIC board to? – Avamander Aug 25 '17 at 15:02
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The Arduino Ethernet shield uses pins 4, 10,11,12,13. You have a conflict with the RFID pins.

  • SPI pins can overlap, SS should be independent. There's not too much info about the chipset used though. – Avamander Aug 25 '17 at 15:01
  • can they overlap with software serial RX/TX? – Juraj Aug 26 '17 at 5:08
  • 1
    SPI can't overlap with softserial. – Avamander Aug 26 '17 at 11:28

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