Webber ElectroCorp Embedded Firmware Engineer Interview Questions and Answers

Q1. Write a code by using recursive function. Basic embedded C questions
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Q1. Bare metal code for blinking an LED,
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Blinking an LED using bare metal code involves directly manipulating hardware registers without an operating system.
• Access the GPIO register for the specific pin connected to the LED

• Set the pin as an output

• Toggle the pin state at regular intervals to create the blinking effect
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Q2. Different types of pointers, volatile variable, storage classes, Static and extern keywords, ISR,
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Different types of pointers, volatile variable, storage classes, Static and extern keywords, ISR
• Pointers: Null pointer, void pointer, function pointer

• Volatile variable: Used to indicate that a variable may be changed by external factors

• Storage classes: auto, register, static, extern

• Static keyword: Used to declare variables that are only accessible within the same file

• Extern keyword: Used to declare variables that are d...read more
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Q1. Find nth largest number in a jumbled array
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Use sorting to find the nth largest number in a jumbled array.
• Sort the array in descending order.

• Access the nth element in the sorted array to find the nth largest number.
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Q2. Deeper questions on static, compilation
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Q1. What is basic of c
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Basics of C include syntax, data types, variables, functions, and control structures.
• C is a procedural programming language

• Variables must be declared before use

• Functions are blocks of code that perform a specific task

• Control structures include if-else, loops, and switch-case

• Data types in C include int, float, char, etc.
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Q2. What is basic of embedded
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Embedded systems are specialized computing systems designed to perform specific tasks within a larger system.
• Embedded systems are typically designed to be small, efficient, and reliable.

• They often have limited resources such as memory, processing power, and energy.

• Examples of embedded systems include microcontrollers in household appliances, automotive control systems, and industrial automation.

• Embedded software is spe...read more
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Q3. What is basic of contoller
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The basic of a controller is to manage and regulate the operation of a system or device.
• Controllers receive input signals and process them to generate output signals.

• They can be programmed to perform specific tasks or functions.

• Examples include microcontrollers, PLCs, and PID controllers.
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Q1. Volatile keyword
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Q2. Project specific
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Q1. Salary expectations
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Q2. Reason for job change
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Q1. Polymorphism code?
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Q2. Ho can you start a sequences
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To start a sequence, you need to define the sequence type, specify the starting value, and set the increment or decrement value.
• Define the sequence type: arithmetic, geometric, or custom

• Specify the starting value of the sequence

• Set the increment or decrement value for arithmetic or geometric sequences

• For custom sequences, define the sequence pattern or rule

• Examples: Arithmetic sequence starting from 1 with an increment...read more
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Q3. What is abstract class? Some basic sc and UVM questions
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Q4. Question over mentioned projects?
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Percentage, speed, series, logical abulity, differnces

Q1. C programs, protocols, Embedded C, pointers
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Q2. Strings swapping nibbles using c
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Swapping nibbles of strings in C
• Use bitwise operations to swap the nibbles of each character in the string

• Iterate through each character in the string and swap the nibbles

• Ensure to handle edge cases like strings with odd length or non-hex characters
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Q3. I2c, can, spi, uart
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Q1. Normal hr questions
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Q2. Self, company details
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Q1. Basic question on coding , digital electronics
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Q2. Difference between d ram and s ram
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DRAM is volatile memory that stores data temporarily, while SRAM is faster and more expensive but retains data as long as power is supplied.
• DRAM stands for Dynamic Random Access Memory, while SRAM stands for Static Random Access Memory.

• DRAM requires refreshing to retain data, while SRAM does not.

• DRAM is slower and less expensive than SRAM.

• Examples of DRAM include DDR3 and DDR4, while examples of SRAM include L1, L2, an
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Very basic c questions like an array