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Serial communication protocols are methods used for data transmission between devices. I2C and UART are two common protocols used in embedded systems.
I2C (Inter-Integrated Circuit) is a synchronous serial communication protocol that uses a master-slave architecture and supports multiple devices on the same bus.
UART (Universal Asynchronous Receiver-Transmitter) is an asynchronous serial communication protocol that uses ...
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I applied via Naukri.com and was interviewed in Apr 2021. There were 4 interview rounds.
A watchdog timer is a hardware or software component that monitors the operation of a system and resets it if necessary.
A watchdog timer is used to prevent system crashes or lock-ups by resetting the system if it becomes unresponsive.
It is typically implemented as a counter that needs to be periodically reset by the system software.
If the watchdog timer is not reset within a certain time period, it triggers a system re...
Semaphore is a synchronization object used to control access to a shared resource.
Semaphore is a signaling mechanism used to control access to a shared resource
It allows multiple processes/threads to access the shared resource simultaneously
Semaphore maintains a count of the number of resources available
When a process/thread requests access to the resource, the count is decremented
When the process/thread releases the r...
Interrupt latency is the time delay between the occurrence of an interrupt and the start of the routine that services the interrupt.
Interrupt latency is a critical factor in real-time systems
It can be affected by factors such as the priority of the interrupt and the current state of the processor
Reducing interrupt latency can improve system performance and responsiveness
Examples of interrupts include hardware interrupt...
DMA address deals with data transfer between memory and peripherals without CPU intervention.
DMA stands for Direct Memory Access.
DMA address is used to transfer data between memory and peripherals without CPU intervention.
DMA address is used to reduce the load on the CPU and improve system performance.
Examples of peripherals that use DMA include network cards, sound cards, and hard drives.
I applied via campus placement at Sastra University and was interviewed in Nov 2020. There were 4 interview rounds.
I applied via Company Website and was interviewed in May 2021. There were 3 interview rounds.
Verbal reasoning, grammer, spelling mistake, analogies, sentence correction, critical reasoning.
posted on 30 Dec 2024
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.
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...
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.
I applied via Approached by Company and was interviewed in Oct 2024. There were 2 interview rounds.
posted on 4 Apr 2024
I applied via Naukri.com and was interviewed in Oct 2023. There were 3 interview rounds.
Percentage, speed, series, logical abulity, differnces
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
Online c programming test using online tool
Syllabus based question
I applied via Recruitment Consulltant and was interviewed in Dec 2022. There were 2 interview rounds.
based on 1 review
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