Hello, It looks like the value you are writing in RFA1SS is 0x01. This sets the field PWD_CTRL_A1=01b and say to the ST25DV to protect the area1 with password 1.But you didn't put the right value in the other fields of RFA1SS.With RFA1SS=0x01, the fi...
Hello, "I wrote a test function, which writes a 16-byte array to the user memory and tries to read it back. I really see that if the delay between writing and reading is about 800 us, reading fails because I don't get ACK" -> what you observe is corr...
Hello, "I'm always writing to the first 256 bytes of the memory so that effectively do 1 cycle every time I update the record. Is that correct ? " -> yes correct."If I write to a new memory address every time, would the phone be able to pick up the U...
Hello, The "Set Memory Protection" command (02 BA) doesn't exist for the ST25DV04KC (it is a command of the ST25TV02KC). Please see the command supported in the datasheet in chapter 7.6.2 Command codes list.In order to protect an area, you need to wr...
