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Deepin Linux
Deepin Linux
Sep 10, 2024 · Fundamentals

Comprehensive Embedded Software Interview Guide: Memory Management, IPC, DMA, Kernel Allocation, and Core Concepts

This article provides an extensive overview of embedded software fundamentals, covering heap vs. stack differences, wild pointers, DMA roles, inter‑process communication methods, memory allocation strategies, malloc vs. new, volatile usage, pointer concepts, Linux kernel locks, FreeRTOS mechanisms, stack overflow prevention, compilation stages, quick‑sort algorithm, header inclusion, CAN identifiers, struct memory optimization, STM32 interrupt handling, user‑to‑kernel transitions, and condition‑variable thundering‑herd effects.

C++DMAEmbedded Systems
0 likes · 121 min read
Comprehensive Embedded Software Interview Guide: Memory Management, IPC, DMA, Kernel Allocation, and Core Concepts
OPPO Kernel Craftsman
OPPO Kernel Craftsman
Jan 14, 2022 · Fundamentals

FreeRTOS Memory Allocation Methods, Interfaces, and Management Schemes

FreeRTOS supports both static and dynamic memory allocation, allowing tasks, timers, semaphores and mutexes to use either a pre‑allocated region or the system heap, provides pvPortMalloc/vPortFree APIs, and offers five heap schemes (heap_1‑5) ranging from simple non‑freeing allocation to multi‑region coalescing management for flexible embedded applications.

Embedded SystemsFreeRTOSMemory Management
0 likes · 8 min read
FreeRTOS Memory Allocation Methods, Interfaces, and Management Schemes