[Solved] What will this Python code print on Raspberry Pi if the serial device sends the string 'World'? import serial ser = serial.Serial('/dev/ttyS0', 9600) data = ser.read(5).decode('utf-8') print(data) | Raspberry Pi

Raspberry Pi - Serial UART Communication

What will this Python code print on Raspberry Pi if the serial device sends the string 'World'?

import serial
ser = serial.Serial('/dev/ttyS0', 9600)
data = ser.read(5).decode('utf-8')
print(data)

AWorld

BWorl

CHello

DError

Step-by-Step Solution

Solution:

Step 1: Understand ser.read(5)
This reads exactly 5 bytes from the serial port.
Step 2: Decode bytes to string
The bytes are decoded using UTF-8, converting them to the string 'World'.
Final Answer:
World -> Option A
Quick Check:
Read 5 bytes matches 'World' length [OK]

Quick Trick: Read count matches string length [OK]

Common Mistakes:

MISTAKES

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What will this Python code print on Raspberry Pi if the serial device sends the string 'World'?