ST25DV HOW TO USE FAST MAILBOX ?

[oziesin]

How can i use FTM buffer i do not understand what should I do exactly. I have problems first step. I can read all block of system memory , user memory and dynamic registers also i can write on user memory(EEPROM) but when i try to initalize Fast transfer mode , i encountered problem that cannot change static configuration registers like i want. 

I am waiting your advises.

[Brian TIDAL]

Hi,

X-CUBE-NFC4 software package provides a mailbox application example with source code. This can help you to develop your own application.

Rgds

BT

[oziesin]

Basically, why the problem that writing incorrect value on static registers exist. it can be anyone of them. I cannot understand where is the problem ? Software part or hardware part. I confused. What could I be missing ?

[Brian TIDAL]

Hi,

have you followed §4.3 of the datasheet: "static registers located in the system configuration area can be accessed with I2C read and write

commands with device select E2=1. Readable system areas could be read in continuity. I2C security session must first be open, by presenting a valid I2C password, to grant write access to system configuration registers."

I would recommend to base your development on middleware provided on st.com rather that starting from scratch. An example of FTM is provided in X-CUBE-NFC4. Also, a user lever FTM library is provided as part of the ST25 Embedded NFC library . See AN5512 ST25 fast transfer mode embedded library. This FTM library provides support for chaining, error detection and recovery.

Feel free to provide more information about your application .

Rgds

BT

[oziesin]

Thanks for reply,

I am going to check it.

[oziesin]

I solved the problem. it was a pointer problem. Function has pointer type but i was writing single number if i write any variable before passing argument that is working. Maybe helps someone.