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RFID RC522 Module Issue

Hello everyone,
I've been recently trying to get the MFRC522 module working with Raspberry Pi 3 + Linx. My code was based on a C library written for the usage with Arduino (Module uses SPI protocol for communication). Despite many tries, I wasn't able to get this thing working. Now, I am trying to do the easiest task I can imagine - initialize the module ale read a value of some register (for example, register with the current timer value). The library for Arduino itself is pretty complex for me, but the initialization and reading register look simple - I have no idea what mistake I made. The vi runs, but no matter what register I choose, I always get a 0, which is not possible. I will be most grateful for any kind of help with this.

Link to the Arduino library: https://github.com/miguelbalboa/rfid
Below i attached the images of the vi's but i can provide all the project files if needed (I didnt want to upload too much clutter).

I know there is a special board for Linx users, but I post this also here so I can get all the attention I can 🙂

 

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