Dear Forum Members,
I'm new with arduino and working with the RC522 and code of miguelbalboa form github. I was experimenting with the code and the last code before i was getting a error "PCD_Authenticatie Failed..." was:
#include <SPI.h>
#include <MFRC522.h>
#define SS_PIN 10 //Arduino Uno
#define RST_PIN 9
MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance.
void setup() {
Serial.begin(9600); // Initialize serial communications with the PC
SPI.begin(); // Init SPI bus
mfrc522.PCD_Init(); // Init MFRC522 card
Serial.println(F("Write personal data on a MIFARE PICC "));
}
void loop() {
// Prepare key - all keys are set to FFFFFFFFFFFFh at chip delivery from the factory.
MFRC522::MIFARE_Key key;
for (byte i = 0; i < 6; i++) key.keyByte[i] = 0xFF;
// Look for new cards
if ( ! mfrc522.PICC_IsNewCardPresent()) {
return;
}
// Select one of the cards
if ( ! mfrc522.PICC_ReadCardSerial()) return;
Serial.print(F("Card UID:")); //Dump UID
for (byte i = 0; i < mfrc522.uid.size; i++) {
Serial.print(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ");
Serial.print(mfrc522.uid.uidByte[i], HEX);
}
Serial.print(F(" PICC type: ")); // Dump PICC type
byte piccType = mfrc522.PICC_GetType(mfrc522.uid.sak);
Serial.println(mfrc522.PICC_GetTypeName(piccType));
byte buffer[34];
byte block;
byte status, len;
Serial.setTimeout(20000L) ; // wait until 20 seconds for input from serial
// Ask personal data: Family name
Serial.println(F("Type Family name, ending with #"));
len=Serial.readBytesUntil('#', (char *) buffer, 30) ; // read family name from serial
for (byte i = len; i < 30; i++) buffer[i] = '\s'; // pad with spaces
block = 2;
//Serial.println(F("Authenticating using key A..."));
status = mfrc522.PCD_Authenticate(MFRC522::PICC_CMD_MF_AUTH_KEY_A, block, &key, &(mfrc522.uid));
if (status != MFRC522::STATUS_OK) {
Serial.print(F("PCD_Authenticate() failed: "));
Serial.println(mfrc522.GetStatusCodeName(status));
return;
}
// Write block
status = mfrc522.MIFARE_Write(block, &buffer[16], 16);
if (status != MFRC522::STATUS_OK) {
Serial.print(F("MIFARE_Write() failed: "));
Serial.println(mfrc522.GetStatusCodeName(status));
return;
}
else Serial.println(F("MIFARE_Write() success: "));
Serial.println(" ");
mfrc522.PICC_HaltA(); // Halt PICC
mfrc522.PCD_StopCrypto1(); // Stop encryption on PCD
}
My card won't able anymore to authenticate with any code or divice. I think i write block 0 because if i read the full card with dumpinfo the block 0 Failed. please help my to reset of fix the card. Thank you for helping!!