First round was telephonic, they asked mainly from the resume , communication protocols, computer architecture, interrupts,cross compilation ,GSM,GPS, diference between timer and counter, watchdog timer,difference between SPI and I2C communication protocol, about modbus ,difference between RS232 and Rs485

First-round is technical. The second is the managerial round. In first-round questions are based on embedded hardware and software. Hardware questions are a bit difficult compared to software questions. Software questions are based on array pointers and pointers. DMA-related questions are also included.