[Solved] What will this code print if the sensor at address 0x40 returns 0x1A for read_byte_data? import smbus bus = smbus.SMBus(1) value = bus.read_byte_data(0x40, 0x00) print(hex(value)) | Raspberry Pi

Raspberry Pi - I2C Communication

What will this code print if the sensor at address 0x40 returns 0x1A for read_byte_data?

import smbus
bus = smbus.SMBus(1)
value = bus.read_byte_data(0x40, 0x00)
print(hex(value))

AError: read_byte_data requires only one argument

B0x1a

C0x00

D26

Step-by-Step Solution

Solution:

Step 1: Understand read_byte_data usage
read_byte_data(address, register) reads a byte from a specific register; returns integer.
Step 2: Convert returned integer to hex string
print(hex(value)) converts 26 decimal to '0x1a'.
Final Answer:
0x1a -> Option B
Quick Check:
read_byte_data returns integer, hex() formats it [OK]

Quick Trick: Use hex() to display byte data in hex format [OK]

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What will this code print if the sensor at address 0x40 returns 0x1A for read_byte_data?