Hi All!
I Am working on a school project, and it is due next week, so I hope someone can help me figure this out…
I am using the Elechouse PN532 NFC Module V3 with the arduino PN532 library. It was working fine via I2C.
Today I changed The wiring of other parts in the system, I didnt change the RFID reader wiring.
But still it doesnt work anymore, and I cant figure out why…
If I connect VCC and Ground to the board, the PWR LED doesnt light up, until I connect the reset line, I dont know if it is supposed to do that, or not but I thougth this could maybe help solve my issue.
This is a simpler and seperate programm that I use to programm the RFID cards, It allways worked, but not anymore…
#include <Wire.h>
#include <SPI.h>
#include <Adafruit_PN532.h>
#define PN532_IRQ (3)
#define PN532_RESET (2)
bool Write = false;
uint8_t myname = 0;
void PrintString(const byte * data);
Adafruit_PN532 nfc(PN532_IRQ, PN532_RESET);
void setup() {
Serial.begin(115200);
Serial.println("Hello!");
nfc.begin();
uint32_t versiondata = nfc.getFirmwareVersion();
if (! versiondata) {
Serial.print("Didn't find PN53x board");
while (1); // halt
}
// Connected to RFID Reader
Serial.println("Connected");
// configure board to read RFID tags
nfc.SAMConfig();
Serial.print("Waiting for Card to be ");
if (Write) {
Serial.println("Writen !");
}
else {
Serial.println("read");
}
Serial.println("");
}
void loop()
{
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 ISO14443A card type)
// Wait for an ISO14443A type cards (Mifare, etc.). When one is found
// 'uid' will be populated with the UID, and uidLength will indicate
// if the uid is 4 bytes (Mifare Classic) or 7 bytes (Mifare Ultralight)
success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLength);
if (success) {
// Display some basic information about the card
Serial.print("Card ID: ");
nfc.PrintHex(uid, uidLength);
if (uidLength == 4) {
// Now we need to try to authenticate it for read/write access
// Try with the factory default KeyA: 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF
// Serial.println("Trying to authenticate block 4 with default KEY");
uint8_t keya[6] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
// Start with block 4 (the first block of sector 1) since sector 0
// contains the manufacturer data and it's probably better just
// to leave it alone unless you know what you're doing
success = nfc.mifareclassic_AuthenticateBlock(uid, uidLength, 4, 0, keya);
if (success) {
uint8_t data[16] ;
if (Write) {
success = nfc.mifareclassic_WriteDataBlock (4, myname);
Serial.println("Information updated");
}
success = nfc.mifareclassic_ReadDataBlock(4, data);
if (success) {
// Data seems to have been read ... spit it out
Serial.print("Data: ");
PrintString(data);
Serial.println("");
}
else
{
Serial.println("Ooops ... unable to read the requested block. Try another key?");
Serial.println("");
}
}
}
// Wait a bit before reading the card again
delay(1000);
}
}
void PrintString(const byte * data)
{
uint32_t szPos = 0;
while ((data[szPos] != 0) && (szPos < 16))
{
Serial.print((char)data[szPos]);
szPos++;
}
Serial.println();
}
Any help is appreciated.
