Memory Overhead Issues
Virtual Function Table Overhead: Each polymorphic class increases vtable memory usage
RTTI Support Cost: Runtime Type Identification consumes additional FLASH space
Exception Handling Bloat: The try-catch mechanism significantly increases code size
Uncontrollable Performance
Constructor Hidden Operations: Static initialization order is uncontrollable
Dynamic Memory Allocation Risks: new/delete can lead to fragmentation in a non-OS environment
Template Instantiation Bloat: Code size explodes after compilation
Difficult Hardware Adaptation
Interrupt Response Delay: C++ context saving complicates interrupt performance
Register Operation Barriers: Syntax is not suitable for direct hardware register manipulation
Memory Mapping Limitations: Difficult to control variable storage locations precisely
Development Environment Constraints
Limited Compiler Support: Most microcontroller toolchains have inadequate C++ support
Increased Debugging Difficulty: Complex syntax leads to poor readability of debugging information
Team Collaboration Resistance: Hardware engineers are generally more familiar with C language
Cost-Benefit Imbalance
High Learning Cost: Hardware engineers require additional time investment to master C++
High Maintenance Cost: Debugging complex projects becomes exponentially more difficult
Increased Hardware Costs: Requires larger memory and storage space to support C++ features
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