[Solved] What will be the output of this code snippet if the button connected to... What will be the output of this code snippet if the button connected to pin 22 is pressed (assuming pressed means HIGH)? | Raspberry Pi

Raspberry Pi - GPIO Basics with Python

What will be the output of this code snippet if the button connected to pin 22 is pressed (assuming pressed means HIGH)?

import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BCM)
GPIO.setup(22, GPIO.IN)
state = GPIO.input(22)
print(state)

ATrue

B22

CFalse

DError

Step-by-Step Solution

Solution:

Step 1: Understand pin setup and input reading
Pin 22 is set as input. When the button is pressed, the pin reads HIGH, so GPIO.input(22) returns True.
Step 2: Check the print output
The variable state holds True, so print(state) outputs True.
Final Answer:
True -> Option A
Quick Check:
Pressed button = True output [OK]

Quick Trick: Pressed button means pin HIGH, so GPIO.input returns True [OK]

Common Mistakes:

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What will be the output of this code snippet if the button connected to pin 22 is pressed (assuming pressed means HIGH)?