As we all know, embedded development is a “cross-border battlefield” between software and hardware, and C/C++ serves as the main assembly language, requiring a balance between performance and hardware control. If you want to become an embedded engineer, what key points should you focus on learning in these two languages?!
Interrupt Latency Optimization:
Disable global interrupts (critical section <10μs)
Use a hybrid architecture of interrupts and polling (e.g., UART reception)
Code Density Compression:
Use __attribute__((packed)) to eliminate structure padding
Enable compiler -Os optimization (GCC’s -flto option)
Cross-Platform Abstraction:
Design a Hardware Abstraction Layer (HAL) (e.g., hal_gpio.h)
Isolate architecture differences with conditional compilation (#ifdef STM32)
Compilation Debugging:
arm-none-eabi-gcc cross-compilation
GDB+OpenOCD remote debugging (JTAG/SWD)
Static Analysis:
Cppcheck to detect uninitialized variables
PC-Lint to enforce coding style (MISRA-C compliance)
Performance Profiling:
Use perf tool to analyze hot functions
Custom counters to measure task execution time
This article is an original piece by Wanyi Education, please indicate the source when reprinting!