Two engineers ask your some protocol problems and c language. describe SPI and IIC, focus on low level drive and setting, also c languages . not at the same time, one engineer ask you ofirst, after he finished ask then next continue, I also introduce them my background.

Interview process was nicely conducted. After first round of interview, it took 4 weeks to get call for next round (probably other candidates were also evaluated at that time). But after 2nd round, further rounds were conducted in fast manner and offer release within a week after final HR round.