Raspberry Pi - I2C Communication
Which of the following is the correct syntax to write the byte value 0x1A to register 0x10 of an I2C device at address 0x20 using
smbus2 in Python?Which of the following is the correct syntax to write the byte value 0x1A to register 0x10 of an I2C device at address 0x20 using smbus2 in Python?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Identify the parameter order for write_byte_data
The function signature iswrite_byte_data(i2c_addr, register, value).Step 2: Match parameters to values
Address is 0x20, register is 0x10, and value is 0x1A, so call isbus.write_byte_data(0x20, 0x10, 0x1A).Final Answer:
bus.write_byte_data(0x20, 0x10, 0x1A) -> Option AQuick Check:
Address, register, value order = D [OK]
Quick Trick: Remember parameter order: address, register, value [OK]
Common Mistakes:
MISTAKES- Swapping address and register parameters
- Using write_byte instead of write_byte_data
- Incorrect number of arguments
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