Raspberry Pi - GPIO Basics with Python
Why does
GPIO.cleanup() not always fix issues if called multiple times in a program?Why does GPIO.cleanup() not always fix issues if called multiple times in a program?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand how GPIO.cleanup() works internally
It resets pins that were set up since the last cleanup call.Step 2: Why multiple calls may not fix all issues
If pins were set before last cleanup, they remain unchanged until next cleanup.Final Answer:
Because cleanup only resets pins used since last cleanup -> Option BQuick Check:
Cleanup resets recent pins only [OK]
Quick Trick: Cleanup resets pins used since last cleanup call [OK]
Common Mistakes:
- Thinking cleanup disables GPIO permanently
- Assuming cleanup reboots Pi
- Believing multiple cleanup calls reset all pins always
Master "GPIO Basics with Python" in Raspberry Pi
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