print at serial only when a new card its avaiable

[Jonesmendes]

dear friend, i test the example pn5180-readuid and the reader its looping, and i would like to read and print the uid at serial only a new card has been detected at reader, its possible? the actual code its same this

void loop() { Serial.println(F("----------------------------------")); Serial.print(F("Loop #")); Serial.println(loopCnt++);

if defined(ARDUINO_ARCH_ESP32)

Serial.println("Free heap: " + String(ESP.getFreeHeap())); 

endif

uint8_t uid[10]; // check for ISO-14443 card nfc14443.reset(); nfc14443.setupRF(); if (nfc14443.isCardPresent()) { uint8_t uidLength = nfc14443.readCardSerial(uid); if (uidLength > 0) { Serial.print(F("ISO14443 card found, UID=")); for (int i=0; i<uidLength; i++) { Serial.print(uid[i] < 0x10 ? " 0" : " "); Serial.print(uid[i], HEX); } Serial.println(); Serial.println(F("----------------------------------")); delay(1000); return; } }

// check for ISO-15693 card nfc15693.reset(); nfc15693.setupRF(); // check for ICODE-SLIX2 password protected tag uint8_t password[] = {0x01, 0x02, 0x03, 0x04}; // put your privacy password here ISO15693ErrorCode myrc = nfc15693.disablePrivacyMode(password); if (ISO15693_EC_OK == myrc) { Serial.println("disablePrivacyMode successful"); } // try to read ISO15693 inventory ISO15693ErrorCode rc = nfc15693.getInventory(uid); if (rc == ISO15693_EC_OK) { Serial.print(F("ISO15693 card found, UID=")); for (int i=0; i<8; i++) { Serial.print(uid[7-i] < 0x10 ? " 0" : " "); Serial.print(uid[7-i], HEX); // LSB is first } Serial.println(); // enable privacy mode ISO15693ErrorCode myrc = nfc15693.enablePrivacyMode(password); if (ISO15693_EC_OK == myrc) { Serial.println("enablePrivacyMode successful"); } Serial.println(); Serial.println(F("----------------------------------")); delay(1000); return; }

// no card detected Serial.println(F("*** No card detected!")); }