[Solved] What will be the effect of the following code?RCC->AHBENR &= ~(1 — Ans: Disables the clock for GPIO port A | ARM Architecture

ARM Architecture - Bus Architecture

What will be the effect of the following code?

RCC->AHBENR &= ~(1 << 17);

ADisables the clock for GPIO port A

BEnables the clock for GPIO port A

CResets the GPIO port A peripheral

DNo effect on GPIO port A clock

Step-by-Step Solution

Solution:

Step 1: Understand bit clearing operation
The &=~ operator clears the specified bit to 0.
Step 2: Identify bit 17 meaning
Bit 17 in RCC->AHBENR controls GPIO port A clock enable; clearing disables it.
Final Answer:
Disables the clock for GPIO port A -> Option A
Quick Check:
Clearing bit disables clock [OK]

Quick Trick: Clear bit with &=~ to disable clock [OK]

Common Mistakes:

Master "Bus Architecture" in ARM Architecture

9 interactive learning modes - each teaches the same concept differently

More ARM Architecture Quizzes

What will be the effect of the following code?