In a C-based embedded system using memory-mapped I/O, what is the required volatile keyword usage to ensure the compiler does not optimize away repeated reads to a status register?

To prevent the compiler from optimizing away repeated reads to a memory-mapped status register, you must declare the pointer to that register using the volatile keyword. Memory-mapped I/O refers to a technique where hardware peripheral registers are assigned specific memory addresses, allowing the processor to communicate with hardware components using standard load and store instructions. Compilers are designed to optimize code by assuming that memory contents remain const....