Odisha Power Generation Corporation Interview Questions and Answers

Interview questions for Embedded Software Engineer

• Embedded systems are hardware and software combined to perform a specific task

• Embedded software is the software component of an embedded system

• Linux is open-source, customizable, and widely used in embedded systems

• Windows is proprietary, less customizable, and not commonly used in embedded systems

• Microcontrollers have built-in memory and peripherals, making them more suitable for embedded systems

• Microprocessors require externa...read more

I have used STM32 microcontroller in my academics.

• I have worked on STM32F4 Discovery board for a project in my final year.

• I have also used STM32CubeMX software for code generation and debugging.

• I have experience in programming STM32 microcontrollers using C language.

To toggle a particular bit in C, use bitwise XOR operator with 1 at the desired bit position.

• Use bitwise XOR operator (^) with 1 at the desired bit position to toggle it.

• Example: To toggle the 3rd bit of a variable 'x', use x ^= (1 << 2);

• Make sure to use the correct bit position starting from 0 for the least significant bit.

Program to iterate an array using pointer

• Declare a pointer variable and initialize it to the base address of the array

• Use a loop to iterate through the array using the pointer variable

• Increment the pointer variable in each iteration to point to the next element

• Stop the loop when the pointer variable reaches the end of the array

Embedded C is a subset of C language used for programming embedded systems.

• Embedded C has limited resources and memory compared to C

• Embedded C has specific libraries and functions for hardware control

• Embedded C has specific syntax for interrupt handling and low-level programming

• C is a general-purpose language while Embedded C is specific to embedded systems

• Example: C can be used for desktop applications while Embedded C is used for programming microcontrollers

Embedded systems are computer systems designed to perform specific tasks within a larger system.

• Embedded systems are found in a wide range of devices, from simple household appliances to complex medical equipment.

• They typically have limited processing power, memory, and storage compared to general-purpose computers.

• They often run on real-time operating systems and require specialized programming languages and tools.

• Examples of embedded systems include pacemakers, automotive c...read more

A microcontroller is a small computer on a single integrated circuit that contains a processor core, memory, and programmable input/output peripherals.

• Microcontrollers are used in embedded systems for controlling various devices and processes.

• They are commonly found in everyday devices such as microwave ovens, washing machines, and remote controls.

• Microcontrollers are programmed using specialized software tools and languages like C or assembly language.

• They are designed to be...read more

ADC stands for Analog-to-Digital Converter, which is used to convert analog signals into digital data through a process called sampling.

• ADC is used in embedded systems to convert physical quantities such as voltage, temperature, or light intensity into digital data for processing by a microcontroller.

• Sampling is the process of measuring the amplitude of an analog signal at regular intervals to create a digital representation of the signal.

• ADCs have a resolution, which determi...read more