1 (edited by G33kLabs 2014-04-28 13:35:08)

Topic: Why first byte of the block 5 is always 0x44 ?

Hi,

I'm working on NFC chips since a few days, and I've a question !

Regarding to the documentation, user data on NTAG203 can start at the first byte of the fifth page.
But on my empty tags (never encoded) or when i write tag with my phone, 0x44 is always starting at the page 5 and then the NDEF message.

I'm actually developing a NFC writer for the industry and as I've only a few chips for the moment, I don't want to lock a chip smile

Empty Card
--------------
Block  0: XX XX XX 1c
Block  1: XX XX XX XX
Block  2: f7 48 00 00
Block  3: e1 10 12 00
Block  4: 01 03 a0 10
Block  5: 44 03 00 fe
Block  6: 00 00 00 00
Block  7: 00 00 00 00
Block  8: 00 00 00 00
Block  9: 00 00 00 00
Block 10: 00 00 00 00
Block 11: 00 00 00 00
Block 12: 00 00 00 00
Block 13: 00 00 00 00
Block 14: 00 00 00 00
Block 15: 00 00 00 00
Block 16: 00 00 00 00
Block 17: 00 00 00 00
Block 18: 00 00 00 00
Block 19: 00 00 00 00
Block 20: 00 00 00 00
Block 21: 00 00 00 00
Block 22: 00 00 00 00
Block 23: 00 00 00 00
Block 24: 00 00 00 00
Block 25: 00 00 00 00
Block 26: 00 00 00 00
Block 27: 00 00 00 00
Block 28: 00 00 00 00
Block 29: 00 00 00 00
Block 30: 00 00 00 00
Block 31: 00 00 00 00
Block 32: 00 00 00 00
Block 33: 00 00 00 00
Block 34: 00 00 00 00
Block 35: 00 00 00 00
Block 36: 00 00 00 00
Block 37: 00 00 00 00
Block 38: 00 00 00 00
Block 39: 00 00 00 00
Block 40: 00 00 00 00
Block 41: 00 00 00 00
Encoded By NFC Writter Android App
--------------------------------------------
Block  0: XX XX XX 36
Block  1: XX XX XX XX
Block  2: 93 48 00 00
Block  3: e1 10 12 00
Block  4: 01 03 a0 10
Block  5: 44 03 10 d1
Block  6: 01 0c 55 03
Block  7: 6a 73 32 6e
Block  8: 6f 64 65 2e
Block  9: 63 6f 6d fe
Block 10: de ad be ef
Block 11: 00 00 00 00
Block 12: 00 00 00 00
Block 13: 00 00 00 00
Block 14: 00 00 00 00
Block 15: 00 00 00 00
Block 16: 00 00 00 00
Block 17: 00 00 00 00
Block 18: 00 00 00 00
Block 19: 00 00 00 00
Block 20: 00 00 00 00
Block 21: 00 00 00 00
Block 22: 00 00 00 00
Block 23: 00 00 00 00
Block 24: 00 00 00 00
Block 25: 00 00 00 00
Block 26: 00 00 00 00
Block 27: 00 00 00 00
Block 28: 00 00 00 00
Block 29: 00 00 00 00
Block 30: 00 00 00 00
Block 31: 00 00 00 00
Block 32: 00 00 00 00
Block 33: 00 00 00 00
Block 34: 00 00 00 00
Block 35: 00 00 00 00
Block 36: 00 00 00 00
Block 37: 00 00 00 00
Block 38: 00 00 00 00
Block 39: 00 00 00 00
Block 40: 00 00 00 00
Block 41: 00 00 00 00