Written test consists of Technical and Apti quiestions. Negatie marks will be there, so be prepared well with your core concepts.
In F2F Interview, started with basic C questions from arrays, strings, pointers, structures, bit wise operators etc... also be prepared with advanced C concepts as well like dynamic memory allocation, data structures and compilers.
Basics on Embedded Systems Concepts like SPI, I2C and Basic CAN protocols. OS/RTOS Concepts, PIC/any Micro controller timer/counter programs etc...
As the requirement was for camera team, few questions from ADAS, like ADAS Concepts related and digital Camera working etc....