10+ Embedded Software Developer Interview Questions and Answers for Freshers

volatile constant and constant volatile are different in terms of read and write access.

• volatile constant means the value can be changed by external factors but cannot be modified by the program

• constant volatile means the value cannot be changed by external factors but can be modified by the program

• the order of volatile and constant keywords matter

• example: volatile const int a = 5; const volatile int *b = &a;

• a can be changed by external factors but cannot be modified by the p...read more

Interrupt service routine handles interrupts, watchdog timer resets system if it hangs, lambda function is an anonymous function, baud rate is data transfer rate, CAN frame format is used in Controller Area Network, SPI is Serial Peripheral Interface, Autosar is an automotive software architecture.

• ISR is a function that handles interrupts from hardware devices

• Watchdog timer resets the system if it hangs or stops responding

• Lambda function is an anonymous function that can be p...read more

Interfacing microprocessor kit with I/O devices involves selecting appropriate communication protocol and configuring the microprocessor pins.

• Select appropriate communication protocol (e.g. SPI, I2C, UART)

• Configure microprocessor pins for communication

• Write code to communicate with I/O devices

• Test and debug the interface

Constructor is a special member function used for initializing objects. Virtual constructor is not possible in C++. Virtual destructor can be implemented.

• Constructor is a special member function with the same name as the class, used for initializing objects.

• Virtual constructor is not possible in C++ as constructors cannot be virtual.

• Virtual destructor is possible in C++ and is used to ensure proper cleanup of resources when an object is destroyed.

• Example: virtual ~ClassName()...read more

Understanding getter setter, virtual function, encapsulation, abstraction in OOP

• Getter and setter methods are used to access and modify private class members respectively

• Virtual functions in C++ allow dynamic binding and are overridden in derived classes

• Encapsulation is bundling data and methods that operate on the data together

• Abstraction is hiding the complex implementation details and showing only necessary features

• OOP focuses on creating objects that interact with each ot...read more

LED interfacing involves connecting LEDs to a microcontroller and controlling them using software.

• Connect LED to microcontroller output pin

• Use software to set output pin high or low to turn LED on or off

• Use PWM to control LED brightness

• Use external driver circuit for high-power LEDs

• Use resistors to limit current and prevent damage to LED

Latest embedded C programming includes features like dynamic memory allocation, multi-threading, and object-oriented programming.

• Dynamic memory allocation allows for more efficient use of memory

• Multi-threading enables concurrent execution of multiple tasks

• Object-oriented programming allows for better code organization and reusability

Networks are essential for communication and data transfer between devices and systems.

• Networks enable devices to communicate and share data with each other.

• They allow for remote access and control of devices.

• Networks facilitate the transfer of large amounts of data quickly and efficiently.

• They enable the creation of complex systems and applications that rely on multiple devices and components.

• Examples include the internet, local area networks (LANs), and wireless networks.

Function pointer is a variable that stores the address of a function. Structures are user-defined data types that group related data. Linked list is a data structure that consists of a sequence of nodes, each containing a reference to the next node.

• Function pointer is used to pass a function as an argument to another function.

• Structures can be used to represent complex data types, such as a person with name, age, and address.

• Linked list is useful for dynamic memory allocation...read more

Embedded new ideas refer to innovative concepts and solutions that can be implemented in embedded systems.

• Embedded new ideas can improve the functionality, performance, and efficiency of embedded systems.

• Examples of embedded new ideas include the use of machine learning algorithms, IoT integration, and real-time data processing.

• Embedded new ideas can also involve the development of new hardware components or the optimization of existing ones.

• Incorporating security features an...read more