easy5 pts · first answer countsembedded-cregisters

A register access macro

Why is volatile used in this register macro?

#define GPIOA_ODR (*(volatile uint32_t *)0x40020014u)

A.So the register is stored in flash memoryB.So every read and write really reaches the hardwareC.So the compiler checks the address is validD.So the value is kept after a reset

Discussion 0

Join free to post in the discussion.

A register access macro

Discussion 0

Related questions