Using volatile in Embedded C: Stop the Compiler from Caching Your Hardware Flags
The volatile keyword prevents compiler optimizations that break interrupt flags and memory-mapped I/O, but it does not guarantee atomic access.
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embeddedcUsing volatile for Memory‑Mapped Register Access in Bare‑Metal Embedded C
A concise architecture note that shows when and how to apply the volatile qualifier to hardware registers, what the compiler guarantees, where extra barriers are needed, and how to verify the generated code.
volatile in Embedded C: What It Guarantees for Memory-Mapped Registers
volatile stops the compiler from optimizing away register accesses, but it does not make them atomic or ordered. Here is how to use it safely and what to verify.
Handling Asynchronous Events with Arduino Interrupts
Learn how to use Interrupt Service Routines (ISRs) in Arduino to capture high-speed hardware events without polling, including the critical use of volatile variables and atomic access.
Diagnosing and Fixing Stack Overflow in Resource-Constrained Embedded C
Unexpected resets and hard faults in embedded C often trace to stack overflow. Learn how to paint the stack, measure the high-water mark, and fix the root cause without corrupting adjacent memory.
Static vs Dynamic Memory in Embedded C: A UART Driver Case Study
Choosing the right memory allocation strategy prevents data loss in UART drivers. Static allocation guarantees deterministic behavior, while dynamic allocation introduces unpredictability.
Choosing a Memory Allocation Strategy for Bare-Metal Embedded C
A decision guide for choosing between static, dynamic, and pool-based memory allocation in bare-metal Embedded C, featuring a MISRA-compliant implementation.
Why volatile Matters for Memory‑Mapped Registers in Embedded C
Explains why the volatile qualifier is essential for memory‑mapped I/O in embedded C, shows a concrete LED‑toggle example, and gives a practical verification workflow.
Static Allocation vs Dynamic Memory in Embedded C: A Practical Guide to Deterministic Systems
Choosing static allocation over dynamic memory in embedded C guarantees deterministic timing and prevents heap fragmentation. This guide shows why, with a UART ring‑buffer example, how to place data in Flash, align structures, and verify placement via the linker map.