Question

my main issue for now, is managing to handle Ultralight EV1 tag. for that we are used to send raw APDU. I have tried, to use the nfc.transmit method, but I suppose it needs to receive more than just the basic apdu code, and it's more low level than I expect. Basically I'm used to transceive : 0x60 -> GET_VERSION 0x1B... -> PWD_AUTH 0x30... -> FAST_READ ... But here passing those value give me errors. I had no issue using the m1_authenticate m1_read_block m1_write_block If you have some sample code, managing to read/write or send the GET_VERSION apdu to an ultralight code, it should be enough for me to take after.

Answer 1

com.common.apiutil.nfc.Nfc

byte[] ultraigh_pwd_auth(byte noBlock, byte[] pwd)

byte[] ultraigh_read_page(byte noBlock)

void ultraigh_write_page(byte noBlock, byte[] inBuf, int inLen)

you can use above 3 to access ultralight card.

if you want to use APDU  , you can use this.

byte[] transmit(byte[] sendBuffer, int sendBufferLength)

Comments

Hello, but this method:

byte[] transmit(byte[] sendBuffer, int sendBufferLength)

triggers errors, because i also tried a quick read using 0x30, but there was no luck.
If there is any sample code of how to send and decode the low level commands. It would be a great help.

Thanks

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Please check the tenth point of the official document: MIFARE Ultralight EV1
commands
https://www.nxp.com.cn/docs/en/data-sheet/MF0ULX1.pdf

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Yeah, Thanks for pointer,
I have been using the 10th point to send the command. I have tried with the GET_VERSION commmand (0x60) but I keep getting the error: cpu_transmit return error code = -1009
and com.common.apiutil.CommonException.

How can I go about this error:

thanks