Page 30 - MDP2022-2

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();
}

void NFC_USE() {
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 ISO
14443A card type)

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

if (success) {
// Display some basic information about the card
Serial.print("Found an ISO14443A card");

if (uidLength == 4)
{
hexString = "";
for (int i = 0; i < uidLength; i++) {
hexString += String(uid[i] / 16, HEX);
hexString += String(uid[i] % 16, HEX);
}
mp3_play(1);
uid_1 = hexString[0];
uid_2 = hexString[1];
uid_3 = hexString[2];
uid_4 = hexString[3];
uid_5 = hexString[4];
uid_6 = hexString[5];
uid_7 = hexString[6];
uid_8 = hexString[7];
hexString = "00000000";

nfc.PrintHexChar(uid, uidLength);
flag = 1;
}
}