How can you write a sequence of commands conditionally to an I2C device only if the device address is valid and the bus is open?

hard🚀 Application Q9 of 15

Raspberry Pi - I2C Communication

AWrite commands directly without checks

BUse write_byte_data without opening the bus

CCheck device presence with a quick read, then use write_byte_data inside a try-except block

DOnly use read_byte_data to verify device

Step-by-Step Solution

Solution:

Step 1: Verify device presence
Perform a quick read or ping to confirm the device is connected.
Step 2: Use try-except for safe writing
Wrap write_byte_data calls in try-except to handle errors gracefully.
Final Answer:
Check device presence with a quick read, then use write_byte_data inside a try-except block -> Option C
Quick Check:
Safe conditional write = check + try-except [OK]

Quick Trick: Always verify device and handle errors when writing [OK]

Common Mistakes:

MISTAKES

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