Senior Embedded Software Engineer

Senior Embedded Software Engineer Interview Questions and Answers

Updated 16 Apr 2023

Q1. difference between SPI and I2c protocol 2. difference between structure and union 3. What is bitfied in c and how to define them 4. What is 16.,32,64 bit microconroller means 5. How to define structure

Ans.

Answers to questions related to SPI and I2C protocols, structures and unions, bitfields in C, and microcontrollers.

SPI is a synchronous protocol with a master-slave architecture, while I2C is a synchronous protocol with a multi-master architecture.
A structure is a collection of variables of different data types, while a union is a collection of variables that share the same memory location.
Bitfields in C allow for the creation of variables that occupy less than one byte of me...read more

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Communication protocols used in embedded devices include SPI, I2C, UART, CAN, Ethernet, and Bluetooth.

SPI (Serial Peripheral Interface) is a synchronous serial communication protocol used for short distance communication between microcontrollers and peripheral devices.
I2C (Inter-Integrated Circuit) is a synchronous serial communication protocol used for communication between integrated circuits on a circuit board.
UART (Universal Asynchronous Receiver/Transmitter) is an asynch...read more

Senior Embedded Software Engineer Interview Questions and Answers for Freshers

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M2M stands for machine-to-machine communication, while IoT stands for internet of things. M2M is a subset of IoT.

M2M refers to direct communication between devices without human intervention.
IoT refers to the connection of devices to the internet, enabling them to send and receive data.
M2M is typically used in industrial settings, while IoT is used in consumer settings.
Examples of M2M include sensors communicating with each other in a manufacturing plant, while examples of Io...read more

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A communication protocol is a set of rules that govern the exchange of data between two or more devices.

Communication protocols define the format, timing, sequencing, and error checking of messages exchanged between devices.
Examples of communication protocols include TCP/IP, Bluetooth, USB, and CAN bus.
Protocols can be either proprietary or open standards.
Protocols can be categorized as either synchronous or asynchronous, depending on whether they require a clock signal to sy...read more

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Ans.

A relay is an electrically operated switch that uses an electromagnet to mechanically open or close a circuit.

Relays are commonly used in electronic circuits to control high power devices such as motors, lights, and heaters.
They can also be used to switch between different circuits or to isolate one circuit from another.
Relays work by using a small amount of current to activate an electromagnet, which then moves a set of contacts to make or break a circuit.
There are many diff...read more

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Macros are extensively used in embedded C for code optimization and abstraction.

Macros can be used for defining constants, functions, and conditional compilation.
They can also be used for code optimization by replacing repetitive code with a macro.
However, macros can also lead to code readability issues and should be used judiciously.
Examples of commonly used macros in embedded C include #define, #ifdef, and #ifndef.

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Arduino is an open-source electronics platform based on easy-to-use hardware and software.

Arduino boards are used to create interactive objects or environments
It uses a simplified version of C++ programming language
Arduino has a large community of users and developers who share their projects and code online
It can be used for a wide range of applications, from robotics to home automation
Arduino boards can be programmed using the Arduino IDE (Integrated Development Environment...read more