AN4430 datasheet(40/42 Pages) STMICROELECTRONICS

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How to use ST NFC package to implement HW enhanced features

AN4430

40/42

DocID025722 Rev 1

Write Example

//***********************************************************************/

//* the function send an WriteSingle command (0x0A 0x21) || (0x02 0x21)

//* the argument myTag is the intent triggered with the TAG_DISCOVERED

//* example : StartAddress {0x00, 0x02} DataToWrite : {0x04 0x14 0xFF 0xB2}

//* the function will write {0x04 0x14 0xFF 0xB2} at the address 0002

//***********************************************************************/

public static byte[] SendWriteSingleBlockCommand (Tag myTag, byte[] StartAddress, byte[]

DataToWrite, DataDevice ma)

{

byte[] response = new byte[] {(byte) 0xFF};

byte[] WriteSingleBlockFrame;

WriteSingleBlockFrame = new byte[]{(byte) 0x02, (byte) 0x21, StartAddress[1],

DataToWrite[0], DataToWrite[1], DataToWrite[2], DataToWrite[3]};

int errorOccured = 1;

while(errorOccured != 0)

{

try

{

NfcV nfcvTag = NfcV.get(myTag);

nfcvTag.close();

nfcvTag.connect();

response = nfcvTag.transceive(WriteSingleBlockFrame);

if(response[0] == (byte) 0x00 || response[0] == (byte) 0x01)

errorOccured = 0;

}

catch(Exception e)

{… }

return response;

}

AN4430 Datasheet(PDF) 40 Page - STMicroelectronics