소프트웨어 공장

ARM Cortex-M 하드폴트(Hard Fault) 디버깅: 레지스터 추적으로 원인 코드 찾는 법

Quick Summary (TL;DR) - For Global DevelopersSymptom: The MCU suddenly stops executing normal code and jumps to an infinite loop inside the HardFault_Handler(), often causing the watchdog timer to reset the system.Cause: Execution of illegal instructions, memory access violations (such as null pointer dereferencing or unaligned memory access), or stacking failures during exception entry.Solution..

[C언어 임베디드] 버퍼 오버플로우(Buffer Overflow) 에러 예방과 안전한 메모리 복사

[Quick Summary (TL;DR) - For Global Developers]Symptom: Unexpected modification of adjacent variables, sudden system resets, or immediate jumps to HardFault_Handler during data parsing.Cause: Writing data beyond the allocated array boundary, which overwrites the Stack Frame (return address) or adjacent global variables in RAM.Solution: Implement strict input validation (Bounds Checking) before a..

[Quick Summary (TL;DR) - For Global Developers]Symptom: Random system resets, infinite loops in HardFault_Handler, unexpected peripheral behaviors, or silent data corruption that alters operation based on Compiler Optimization levels.Cause: Dereferencing uninitialized pointer variables (Wild Pointer) or accessing memory addresses that have already been deallocated from the heap or stack frame (D..

[Quick Summary (TL;DR) - For Global Developers]Symptom: MCU enters HardFault_Handler or suddenly resets, causing memory corruption and unpredictable runtime behavior.Cause: A thread or function exceeds its allocated stack space due to large local variables, deep recursion, or high interrupt nesting.Solution: Optimize local memory allocation using static or dynamic memory, increase stack size in ..