Arduino board: Arduino Mega 2560
Arduino IDE version 1.8.13
List the steps to reproduce the problem below (if possible attach a sketch or copy the sketch code in too): I am trying to connect a PN532 card in a project that has a W5500 ethernet shield, both by SPI
Project font: https://www.arducoding.com/2020/03/mesin-absensi-arduino-dengan-smart-card.html
Library version: -- Ethernet.h V2.0 -- Adafruit_PN532.h V1.2.2
Issue: If I comment on the Ethernet part, PN532 works fine; if I comment on the PN532, Ethernet works fine; If I uncomment both, Ethernet works but PN532 does the setup, identifies the card but never reads.

My test code:


#include <Wire.h>
#include <SPI.h>
#include <Ethernet.h>
#include <Adafruit_PN532.h>

define PN532_MISO (50)

define PN532_MOSI (51)

define PN532_SCK (52)

define PN532_SS (34)

//#define PN532_RESET (3) // Not connected by default on the NFC Shield

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; //MAC Address IPAddress ip(192,168,1,5); //arduino IP EthernetClient client; const int ledPin = LED_BUILTIN; String UID_CARD; String attendance_status; String user_card; Adafruit_PN532 nfc(PN532_SCK, PN532_MISO, PN532_MOSI, PN532_SS); //Adafruit_PN532 nfc(PN532_SS_1);

void setup(void) { pinMode(ledPin, OUTPUT); digitalWrite(ledPin, LOW); Serial.begin(250000); while (!Serial) delay(10); // for Leonardo/Micro/Zero nfc.begin(); Serial.println("Mesin Absen Gabut"); delay(2000); uint32_t versiondata = nfc.getFirmwareVersion(); if (! versiondata) { Serial.print("Didn't find PN53x board"); while (1); // halt } // Got ok data, print it out! Serial.print("Found chip PN5"); Serial.println((versiondata>>24) & 0xFF, HEX); Serial.print("Firmware ver. "); Serial.print((versiondata>>16) & 0xFF, DEC); Serial.print('.'); Serial.println((versiondata>>8) & 0xFF, DEC);

// configure board to read RFID tags nfc.SAMConfig(); Ethernet.begin(mac, ip); Serial.print("Local IP: "); Serial.println(Ethernet.localIP()); Serial.println("Waiting for an ISO14443A Card ..."); }

void loop(void) { uint8_t success; uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 }; // Buffer to store the returned UID uint8_t uidLength; // Length of the UID (4 or 7 bytes depending on ISO14443A card type)

success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLength);

if (success) { // Display some basic information about the card Serial.println("Found an ISO14443A card"); Serial.print(" UID Length: ");Serial.print(uidLength, DEC);Serial.println(" bytes"); Serial.print(" UID Value: "); nfc.PrintHex(uid, uidLength); Serial.println("");

uint32_t szUid;
String uidData;
for (szUid=0; szUid < uidLength; szUid++){
      uidData += String(uid[szUid]&0xFF, HEX);
}
uidData.toUpperCase(); //biarhuruf besar
Serial.println(uidData);
UID_CARD =uidData;

if (uidLength == 4){
  //Serial.println("Seems to be a Mifare Classic card (4 byte UID)");   
  //Data Nama disimpan di blok 4 data Status di blok 5
  Serial.println("Trying to authenticate block 4 with default KEYA value");
  uint8_t keya[6] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };

  //baca blok4
  success = nfc.mifareclassic_AuthenticateBlock(uid, uidLength, 4, 0, keya);

  if (success){
    Serial.println("Blocks 4) has been authenticated");
    uint8_t data[16];
    // Try to read the contents of block 4
    success = nfc.mifareclassic_ReadDataBlock(4, data);

    if (success){
      // Data seems to have been read ... spit it out
      Serial.println("Reading Block 4:");
      nfc.PrintHexChar(data, 16);
      Serial.println("");

      uint32_t szPos;
      String phrase;
      for (szPos=0; szPos < 16; szPos++){
            phrase += (char)data[szPos];
      }
      Serial.print("User: ");
      Serial.println(phrase);//Nama pengguna
      user_card=phrase;
      //user_card += "";
    }
    else{
      Serial.println("Ooops ... unable to read the requested block.  Try another key?");
    }
  }
  else{
    Serial.println("Ooops ... authentication failed: Try another key?");
  }

  //baca blok5
  success = nfc.mifareclassic_AuthenticateBlock(uid, uidLength, 5, 0, keya);
  if (success){
    Serial.println("Blocks 5) has been authenticated");
    uint8_t data1[16];
    // Try to read the contents of block 5
    success = nfc.mifareclassic_ReadDataBlock(5, data1);

    if (success){
      // Data seems to have been read ... spit it out
      Serial.println("Reading Block 5:");
      nfc.PrintHexChar(data1, 16);
      Serial.println("");

      uint32_t szPos;
      String phrase;
      for (szPos=0; szPos < 16; szPos++){
            phrase += (char)data1[szPos];
      }

      Serial.println(phrase);
      if ((phrase == "IN") || (phrase == "START")){
          digitalWrite(ledPin, HIGH);
          memcpy(data1, (const uint8_t[]){ 'O', 'U', 'T', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, sizeof data1);
          success = nfc.mifareclassic_WriteDataBlock (5, data1);
          attendance_status = "OUT";
          delay(200);
          digitalWrite(ledPin, LOW);
            Serial.print("Local IP: ");
            Serial.println(Ethernet.localIP());

       }else if (phrase == "OUT"){
          digitalWrite(ledPin, HIGH);
          memcpy(data1, (const uint8_t[]){ 'I', 'N', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, sizeof data1);
          success = nfc.mifareclassic_WriteDataBlock (5, data1);
          attendance_status = "IN";
          delay(200);
          digitalWrite(ledPin, LOW);
            Serial.print("Local IP: ");
            Serial.println(Ethernet.localIP());
       }else{
        Serial.println("invalid card");
       }

      // Wait a bit before reading the card again
      delay(4000);
    }
    else{
      Serial.println("Ooops ... unable to read the requested block.  Try another key?");
    }
  }
  else{
    Serial.println("Ooops ... authentication failed: Try another key?");
  }
}

if (uidLength == 7){
  Serial.println("Kartu anda ilegal, colongan ya?");
}

} }

adafruit / Adafruit-PN532

Problems combining Adafruit_PN532.h V1.2.2 (SPI) with Ethernet.h V2.0 #98

define PN532_MISO (50)

define PN532_MOSI (51)

define PN532_SCK (52)

define PN532_SS (34)