2- Describe I2C with frame
Embedded Analyst Interview Questions
6,858 embedded analyst interview questions shared by candidates
C programming Problem solving Embedded concepts RTOS Automotive networks
The technical test and HR interview
why using void with main() and which is preferred int or void
Valeo interview experience Part one : 1 The interviewer and the interviewee introduce themselves I mentioned in the cv the knowledge of MISRA C and git/github, and I was asked what I know about them 2 You are requested to talk about a project that you're comfortable with and through it, You will get to explain the main embedded systems concepts like (adc pwm serial communications... etc ) *I explained the concepts in details using illustrations and equations ... No code was required, only how each component was configured. 3 I was asked directly what do you know about " Data Structures " Then, I was asked to simply construct a linked list that contains the elements 1,2,3 Then, I was asked to make a linked list in an unconventional way of not using dynamic allocation or arrays 4 I was asked to make a "complete executable program" which is a simple compression algorithm that accepts an array of 8 bytes erase the MSB and concatenate the bytes so at the end instead of having 8 bytes you will have 7 bytes Through out discussing the program, I was asked about the scope of the memory in a program where the variables are kept ... etc I was asked about the startup code and bootloaders Can I edit the memory locations ? Return by value and return by reference. Why always the array is sent as a pointer and not by its value? Part Two: At the end I asked about some carrier guidance tips : What microcontrollers are currently used in the industry and would knowing various versions of the same processor is important like for example knowing different arm versions (tiva C and stm32 for example) ? Currently, The industry use 8bit (which have the challenge of writing codes for small resources ), and 32bits and not the 16bit ones as their costs is too close to the 32 ones but of course the 8bits are still very cheap compared to the 32bits so they are still in use knowing different versions of microcontrollers is not important (...I believe bcz companies use AUTOSAR ??!) Is embedded linux used in the industry !? Embedded linux cannot be used widely in the automotive industry, As it doesn't “directly” support real time response (and I was asked to search on why :D), but is used in interfacing the screens. Further, I was advised to deeply study operating systems mainly “RTOS” and data structures. Review : Embedded systems interviews are all the same, in focusing on the same topics, solve several related questions and practice on an IDE.
The Interview was quiet good , Introduce yourself, Team work questions , Situations were you acted as a leader and faced difficulties, an achievement you're proud of...
Write a swap function between two arrays with different sizes
• What is Cache? Explain the basics of it and how does it work at hardware level. • Explain cache mapping • Explain cache coherence • What is interrupt? And what does the CPU do when an interrupt occurs? • Explain registers in Arm cortex processor • What is Cache? How does it work? • Explain cache mapping • Explain cache coherence • What is interrupt? And what does the CPU do when an interrupt occurs? • Explain registers in Arm cortex processor • What does r14 register do? • What is context switch and how does it happen? • Explain the usage of Volatile keyword. • Explain the usage of Extern keyword • Explain the usage of Static keyword with examples • What happens if a variable has both extern and static keyword? • What is DMA? • What is MMU? • What is Mutex? What is semaphore? What is the difference between semaphore and a mutex? and few more questions
I was not selected for an interview for the role, and I appreciate the fact that ARM HR communicated their decision very promptly.
High level Interview scope 1) Briefing details provided in Resume. 2) Core skill specific to project or hobby experience. 3) Skills required for a current opening. 4) problem-solving experience 5) Handling various circumstances associated with project execution
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