Logitech Senior Firmware Engineer Interview Questions and Answers

Q1. Write monitor for APB protocol
Ans. 
A monitor for APB protocol is a verification component that checks for protocol compliance in APB transactions.
• Monitor should check for valid address, data, and control signals in APB transactions

• It should detect and report any protocol violations or errors

• Monitor should be able to track the state of the APB bus and ensure proper communication between master and slave devices
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Q2. Design FSM - halway with 2 detectors, accuire amout of pepole in room - only one person can pass halway each time.
Ans. 
Design a finite state machine to count the number of people passing through a hallway with 2 detectors, allowing only one person at a time.
• Create states for each detector and the hallway

• Transition between states based on detector inputs

• Use counters to keep track of the number of people passing through

• Implement logic to prevent multiple people from passing simultaneously
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Q1. Projects related questions
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Q2. C program for array swapping
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A C program to swap elements in an array of strings
• Use a temporary variable to swap elements in the array

• Iterate through the array and swap elements at each index
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Basics of c, c++, python languages
Any one os environment

Q1. Not yet done.,...,......
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Q2. .. Not yet done.........
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Q1. I got an link to mail which contain 25 C language MCQ's . Most of the questions are medium level and some are hard level.
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Q1. They asked all the concepts of C and given some small programming tasks too
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Q1. Asked about some C questions & linked list concepts and some programs too.(Delete a node without head pointer)
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Q1. Here some extent concentrated on C & remaining 70% is purely on previous projects and on micro controllers and on some on RTOS multi-threading and communication protocols
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Q1. 60% is purely on technical skills and 40% is on manager questions like related to some general questions which will test logical skills and remaining are 1. why should I hire you 2. How you wanna see your...read more
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Q1. Bit manipulation
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Q2. Volatile keywords in c work in which way
Ans. 
Volatile keyword in C is used to indicate that a variable may be changed unexpectedly by external factors.
• Volatile keyword tells the compiler not to optimize the variable because it can be changed by external factors.

• Commonly used for memory-mapped hardware registers or variables accessed by multiple threads.

• Example: volatile int *ptr = (int *)0x1234; // pointer to a memory-mapped hardware register
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Q1. How do you handle stress
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Q2. How do you achieve work life balance
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Q1. Basic about project
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Q2. C coding question
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Simple 20 questions basic questions and c questions in 40 minutes 40 questions