Open serkanersozz opened 4 months ago
I'm trying to read from mifare 13,56 rfid tags. I can read UID successfully but not payload.
Below what I tried recently and i'm kinda lost it because it shouldn't this hard so I'm looking in the wrong direction, probably.
String dump_byte_array(byte *buffer, byte bufferSize) { String data = ""; for (byte i = 0; i < bufferSize; i++) { data.concat(String(buffer[i] < 0x10 ? "0" : "")); data.concat(String(buffer[i], HEX)); } Serial.println(data); return data; } // Running in a device loop so reader is the device index if (mfrc522[reader].PICC_IsNewCardPresent() && mfrc522[reader].PICC_ReadCardSerial()) { byte buffer[18]; byte size = sizeof(buffer); mfrc522[reader].MIFARE_Read(4, buffer, &size); // BELOW DOES NOT WORKS. PRINTS 300426EE00000000000000009022FB3F dump_byte_array(buffer, 16); // BELOW WORKS card_id = dump_byte_array(mfrc522[reader].uid.uidByte, mfrc522[reader].uid.size); mfrc522[reader].PICC_HaltA(); mfrc522[reader].PCD_StopCrypto1(); }
Step 1: Describe your environment
I'm trying to read from mifare 13,56 rfid tags. I can read UID successfully but not payload.
Below what I tried recently and i'm kinda lost it because it shouldn't this hard so I'm looking in the wrong direction, probably.