What is the data format of the RFID1356MIFARE output ? But I don't know where it starts or where it ends. Success = nfc.mifareultralight_ReadPage (4, data) Try to read the first general-purpose user page (#4) Serial.println("Seems to be a Mifare Ultralight tag (7 byte UID)") We probably have a Mifare Ultralight card. authentication failed: Try another key?") Wait a bit before reading the card again Success = nfc.mifareclassic_ReadDataBlock(4, data) success = nfc.mifareclassic_WriteDataBlock (4, data) Serial.println("Waiting for an ISO14443A Card. Serial.print('.') Serial.println((versiondata>8) & 0xFF, DEC) ") Serial.print((versiondata>16) & 0xFF, DEC) Serial.print("Found chip PN5") Serial.println((versiondata>24) & 0xFF, HEX) Uint32_t versiondata = nfc.getFirmwareVersion() Code Select Expand PN532_HSU pn532hsu(Serial1)
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