Senior Firmware Engineer Interview Questions and Answers

To bring up a device requiring a mobile host for onboarding, establish communication between the device and mobile host.

• Establish communication between the device and mobile host using Bluetooth, Wi-Fi, or other wireless protocols.

• Develop firmware on the device to enable it to detect and connect to the mobile host.

• Implement a user-friendly interface on the mobile host for device onboarding process.

• Ensure secure communication between the device and mobile host to protect sensi...read more

Design and implementation of a real-time embedded system for monitoring and controlling a solar-powered irrigation system

• Developed a low-power wireless sensor network for data acquisition

• Implemented a control algorithm for efficient water usage

• Designed a user interface for remote monitoring and control

• Evaluated the system's performance in a real-world setting

Rotate a single linked list

• Create a new pointer to the last node of the linked list

• Make the next of the last node point to the head of the linked list

• Make the head of the linked list point to the second node

• Update the new last node to point to null

LRU cache is a data structure that stores the most recently used items, discarding the least recently used items when the cache is full.

• LRU stands for Least Recently Used.

• It operates on the principle of discarding the least recently used items first when the cache reaches its capacity.

• It typically involves a combination of a doubly linked list and a hash map for efficient operations.

• Example: If the cache has a capacity of 3 and items A, B, C are accessed in that order, then a...read more