Raspberry Pi - GPIO Basics with Python
Which of the following is the correct syntax to set GPIO pin 22 to LOW using
GPIO.output()?Which of the following is the correct syntax to set GPIO pin 22 to LOW using GPIO.output()?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Use correct constant for LOW state
GPIO.LOW is the proper constant to represent a LOW voltage level in the GPIO library.Step 2: Confirm parameter order
The first argument is the pin number, second is the state constant.Final Answer:
GPIO.output(22, GPIO.LOW) -> Option AQuick Check:
GPIO.output(pin, GPIO.LOW) = Set pin LOW [OK]
Quick Trick: Always use GPIO.LOW constant, not just LOW or 0 [OK]
Common Mistakes:
- Using LOW without GPIO prefix
- Swapping parameters
- Using numeric 0 instead of GPIO.LOW
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