After the initial screening, it has 2 rounds - one Technical and one HR Round. The technical interview is very elaborate and mostly the deciding round of the interview.
If you have an in-depth knowledge of embedded software and hardware-software interaction, you are good to go.
Tips:
1. Brush up your low-level firmware skills - I2C, SPI, Timers, etc.
2. Brush up the fundamentals of RTOS - Scheduling, Race Conditions, etc.
3. Brush up on IPC concepts
