SPI Communication with LTC6803-2

[PPatl.1]

Hello, I'm trying to make a battery management system with LTC6803 but i can't read any values at all. All libraries i found are based on Arduino and i don't have any Arduino which i can try if are they working (so i can try porting the code to STM). IC uses SPI to communicate which i can use between two STM32F4-DISCO cards without any problem. I have actually tried to port an Arduino project but failed to read anything, any ideas what is wrong ?