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I'm trying to read NTAG213. The read is successful for pages below 16.
I'm reading 4 pages block with READ (0x30) command. If I read a block starting from page 15, page 15 is read correctly and then the rest of the data is from page 0, 1, 2.
If I try to start reading from page 16 and above, I don't get any reply from trf7970a, and reading timeouts.
The function that reads block sends the following sequence:
8F 91 3D 00 20 30 [BLOCK_ADDRESS]
8F 91 3D 00 20 30 0C ------------------> OK
8F 91 3D 00 20 30 10 ------------------> NOT OK
For pages bellow 16 I get write interrupt after ~0.53 ms, send command to reset FIFO, and then get read interrupt after ~1.5 ms
I don't get read interrupt if BLOCK_ADDRESS >= 16
I have two tags, and I can read the content of a tag with NFC TagInfo app, thus I think it means no pages are under password.
We are using custom board and tms320C28xx microcontroller.
I am researching this since I do not have any of these tags currently. I also ordered some tags to work with, but won't receive them until Friday. When you read using the NFC TagInfo app, can you confirm it reads all pages of the tag? I also have a sniffer, so when I receive the tags, I can sniff the communication between the phone and tag to determine exactly what commands are being used.
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In reply to Eddie LaCost:
In reply to Oleksandr Kozaruk78:
This was resolved outside of the e2e forums with Sasha. I have attached the Saleae logic analyzer shots of the correct reading of NTAG213. ntag213_read_39_blocks_of_data.logicdata
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