Infineon Technologies Interview Questions, Process, and Tips

Difficulty level is 4/5

Q1. Basics of C and pointers
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Q2. Whats is the null pointer
Ans. 
A null pointer is a pointer that does not point to any memory location.
• Null pointers are used in programming languages to represent that a pointer does not point to a valid object or memory location.

• Attempting to dereference a null pointer can result in a segmentation fault or other runtime error.

• Example: int* ptr = nullptr; // ptr is a null pointer
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Q1. Can make a simple button debounce circuit ?
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Yes, a simple button debounce circuit can be created using a resistor and a capacitor.
• Use a resistor and a capacitor in series with the button to create a low-pass filter.

• Connect the output of the filter to a Schmitt trigger to clean up the signal.

• Adjust the values of the resistor and capacitor to achieve the desired debounce time.

• Example: Use a 10k ohm resistor and a 0.1uF capacitor for a debounce time of 10ms.
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Q1. Write a structured embedded C program to read button input, remove glitches.
Ans. 
Program to read button input and remove glitches in embedded C.
• Use a state machine to debounce the button input.

• Implement a delay to filter out glitches.

• Consider using interrupts for efficient button handling.
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Q1. Explain functional and code coverage.
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Functional coverage ensures all functions are tested, while code coverage ensures all lines of code are executed.
• Functional coverage focuses on testing the functionality of the design.

• Code coverage ensures that all lines of code are executed during testing.

• Functional coverage helps in identifying missing or incomplete functionality.

• Code coverage helps in identifying untested code paths.

• Example: Functional coverage may ...read more
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Q1. Questions on AHB protocol.
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Q1. Digital design based questions.
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Basic c question , quant

Q1. Embedded c volatile ,static
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Q2. Operation systems , rtos
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Q1. Aim , where you see yourself in next 10 years
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Q1. Do you have knowledge of Embedded systems?
Ans. 
Yes, I have knowledge of Embedded systems.
• Experience with programming microcontrollers such as Arduino, Raspberry Pi, or ESP8266

• Understanding of real-time operating systems (RTOS)

• Knowledge of communication protocols like SPI, I2C, UART

• Familiarity with embedded software development tools like Keil, MPLAB, or Arduino IDE
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There were total 10 sections including Aptitude, C++, Java, Python, DSA, OS, Embedded C, ML, Web development, C sharp. Total of 90 MCQ's in 120 mins, no negative marking.

Q1. Total 5 interactions with 5 different people. Round 1. 2 DSA questions and Project discussion from resume. Round 2. 2 DSA questions, questions on OOP with code writing, 1 Puzzle. Round 3. Questions on C, ...read more
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