[Solved] Which of the following is the correct way to open an I2C bus safely using smbus2 in Python? - Ans: with SMBus(1) as bus: # use bus | Raspberry Pi

Raspberry Pi - I2C Communication

Which of the following is the correct way to open an I2C bus safely using smbus2 in Python?

Aopen(SMBus(1)) # use bus

Bbus = SMBus(1) # use bus bus.close()

Cbus = SMBus() # use bus

Dwith SMBus(1) as bus: # use bus

Step-by-Step Solution

Solution:

Step 1: Identify the recommended safe usage
The recommended way is to use a context manager: with SMBus(1) as bus: which automatically opens and closes the bus safely.
Step 2: Check other options for correctness
bus = SMBus(1) # use bus bus.close() manually opens and closes but is less safe. bus = SMBus() # use bus misses the bus number. open(SMBus(1)) # use bus uses invalid syntax.
Final Answer:
with SMBus(1) as bus: # use bus -> Option D
Quick Check:
Use 'with' to open SMBus safely [OK]

Quick Trick: Use 'with SMBus(bus_number) as bus:' for safe bus handling [OK]

Common Mistakes:

MISTAKES

Master "I2C Communication" in Raspberry Pi

9 interactive learning modes - each teaches the same concept differently

More Raspberry Pi Quizzes

Which of the following is the correct way to open an I2C bus safely using smbus2 in Python?