[Solved] What will be the output of this code snippet using smbus2 if the device at address 0x50 returns 0xAB for register 0x01?from smbus2 import SMBus with SMBus(1) as bus: data = bus.... | Raspberry Pi

Raspberry Pi - I2C Communication

What will be the output of this code snippet using smbus2 if the device at address 0x50 returns 0xAB for register 0x01?

from smbus2 import SMBus
with SMBus(1) as bus:
    data = bus.read_byte_data(0x50, 0x01)
    print(hex(data))

A0xab

B0x50

C1

DError: Device not found

Step-by-Step Solution

Solution:

Step 1: Understand read_byte_data behavior
The method reads a byte from the specified register of the device and returns it as an integer.
Step 2: Convert returned byte to hex string
Printing with hex() converts the integer 0xAB to string '0xab'.
Final Answer:
0xab -> Option A
Quick Check:
read_byte_data returns byte value = 0xab [OK]

Quick Trick: read_byte_data returns int; hex() converts to hex string [OK]

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What will be the output of this code snippet using smbus2 if the device at address 0x50 returns 0xAB for register 0x01?