ST25DV64K read more than 64 blocks at once

[Greidimar]

I use the Flutter NFC Kit library.
I enter the password and then use: Extended Read Multiple Blocks

"2033XXXXXXXXXXXXXXX00003F00"

Request_flags -> 20
Extended Read Multiple Block -> 33
UID -> XXXXXXXXXXXXXXX
First block number -> 0000
Number of blocks -> 3F00 == decimal 63 blocks (total read 64 blocks)

With this line of code, I read 64 blocks, but if I try to read a larger number of blocks, for example, 128 blocks, passing 80h for Number of blocks, I receive an error message and the blocks are not read.

Is it possible to read more than 64 blocks with smartphones?

[JL. Lebon · Accepted solution]

Hello, 

Looking at the command bytes, it looks like you have set the data rate to low data rate in the request flag (value 20)

I think iPhones do not support low data rate, only high data rate.

Can you try with: 2233XXXXXXXXXXXXXXX00003F00 ?

Best regards.