how to write new id on my nfc card with arduino and pn532

Other Hardware Sensors
1

i am using default pn532 example code to write ID on my nfc card but i cant it is not go foreword after authenticate block.

2

No link to the hardware used, no code in the post that is used. Did you really read the sticky post at the top of the topic?

3

sorry i am using
nfc reader :- https://www.amazon.in/gp/product/B072TD45XB/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1

nfc cards :- https://www.amazon.in/gp/product/B07234WDNZ/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1

code:-

// This example writes a MIFARE memory block 0x08. It is tested with a new MIFARE 1K cards. Uses default keys.
// Note: Memory block 0 is readonly and contains manufacturer data. Do not write to Sector Trailer block
// unless you know what you are doing. Otherwise, the MIFARE card may be unusable in the future.

//Contributed by Seeed Technology Inc (www.seeedstudio.com)

#include <PN532.h>
#include <SPI.h>

/Chip select pin can be connected to D10 or D9 which is hareware optional/
/if you the version of NFC Shield from SeeedStudio is v2.0./
#define PN532_CS 10
PN532 nfc(PN532_CS);

uint8_t written=0;
#define NFC_DEMO_DEBUG 1

void setup(void) {
#ifdef NFC_DEMO_DEBUG
Serial.begin(9600);
Serial.println("Hello!");
#endif
nfc.begin();

uint32_t versiondata = nfc.getFirmwareVersion();
if (! versiondata) {
#ifdef NFC_DEMO_DEBUG
Serial.print("Didn't find PN53x board");
#endif
while (1); // halt
}
#ifdef NFC_DEMO_DEBUG
// 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);
Serial.print("Supports ");
Serial.println(versiondata & 0xFF, HEX);
#endif
// configure board to read RFID tags and cards
nfc.SAMConfig();
}

void loop(void)
{
uint32_t id;
// look for MiFare type cards
id = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A);

if (id != 0)
{
#ifdef NFC_DEMO_DEBUG
Serial.print("Read card #");
Serial.println(id);
Serial.println();
#endif
uint8_t keys[]= {
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF };
uint8_t writeBuffer[16];
for(uint8_t i = 0;i < 16;i ++)
{
writeBuffer*=i; //Fill buffer with 0,1,2....F*

  • }*
  • if(nfc.authenticateBlock(1, id ,0x08,KEY_A,keys)) //authenticate block 0x08*
  • {*
  • //if authentication successful*
  • if(written == 0) //Not written*
  • {*
  • written = nfc.writeMemoryBlock(1,0x08,writeBuffer); // Write writeBuffer[] to block 0x08*
  • if(written)*
    #ifdef NFC_DEMO_DEBUG
  • Serial.println("Write Successful"); *
    #endif
  • }*
  • uint8_t block[16];*
  • //read memory block 0x08*
  • if(nfc.readMemoryBlock(1,0x08,block))*
  • {*
    #ifdef NFC_DEMO_DEBUG
  • Serial.println("Read block 0x08:");*
  • //if read operation is successful*
  • for(uint8_t i=0;i<16;i++)*
  • {*
  • //print memory block*
    _ Serial.print(block*,HEX);_
    _     Serial.print(" ");_
    _     }_
    _     Serial.println();_
    _    #endif*_
    * }*
    * }*
    * }*
    * delay(500);*
    }
    Output:-
    Hello!
    Found chip PN532
    Firmware ver. 1.6
    Supports 7
    Found 1 tags
    Sens Response: 0x44
    Sel Response: 0x0
    0x4 0x42 0xC7 0xBA 0x20 0x4B 0x80Read card #3122678656
4

Code tags please!! You code was mangled by the forum system because you didn't use code tags! Edit your post and add code tags!