[Solved] What is wrong with this code to enable ADC clock?RCC->APB2ENR |= (1 APB2ENR &= ~(1 — Ans: Clock is enabled then immediately disabled | ARM Architecture

ARM Architecture - Bus Architecture

What is wrong with this code to enable ADC clock?

RCC->APB2ENR |= (1 << 9);
RCC->APB2ENR &= ~(1 << 9);

ABit 9 does not control ADC clock

BIncorrect register used

CMissing clock enable delay

DClock is enabled then immediately disabled

Step-by-Step Solution

Solution:

Step 1: Analyze sequence of operations
First line enables ADC clock by setting bit 9.
Step 2: Effect of second line
Second line clears bit 9, disabling the clock immediately.
Final Answer:
Clock is enabled then immediately disabled -> Option D
Quick Check:
Enable then disable cancels out [OK]

Quick Trick: Avoid clearing bits right after setting them [OK]

Common Mistakes:

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What is wrong with this code to enable ADC clock?