pyserial library usage in Raspberry Pi - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the pyserial library.

Raspberry Pi

import [1]

Drag options to blanks, or click blank then click option'

Aserialport

Bpyserial

Cserial

Dpyserialport

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to import 'pyserial' instead of 'serial'.

Using incorrect module names like 'serialport'.

The pyserial library is imported using import serial. This allows you to use serial communication functions.

2fill in blank

medium

Complete the code to open a serial connection on port '/dev/ttyUSB0' with baud rate 9600.

Raspberry Pi

ser = serial.Serial(port=[1], baudrate=9600)

Drag options to blanks, or click blank then click option'

A"COM3"

B"COM1"

C"/dev/ttyS0"

D"/dev/ttyUSB0"

Attempts:

3 left

💡 Hint

Common Mistakes

Using Windows port names on Raspberry Pi.

Forgetting to put the port name in quotes.

On Raspberry Pi, USB serial devices usually appear as /dev/ttyUSB0. This is the correct port string to open.

3fill in blank

hard

Fix the error in the code to read one line from the serial port and decode it as UTF-8.

Raspberry Pi

line = ser.readline().[1]('utf-8').strip()

Drag options to blanks, or click blank then click option'

Awrite

Bdecode

Cread

Dencode

Attempts:

3 left

💡 Hint

Common Mistakes

Using encode instead of decode.

Trying to read without decoding bytes.

The data read from serial is bytes. To convert it to a string, use decode('utf-8').

4fill in blank

hard

Fill both blanks to write the string 'Hello' followed by a newline to the serial port.

Raspberry Pi

ser.write([1].[2]('utf-8'))

Drag options to blanks, or click blank then click option'

A"Hello"

Bencode

Cdecode

D"Hello\n"

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting to encode the string before writing.

Not adding newline if needed.

To send data, convert the string to bytes using encode('utf-8'). Adding \n sends a newline.

5fill in blank

hard

Fill all three blanks to create a serial connection on port '/dev/ttyAMA0' with baud rate 115200 and timeout 1 second.

Raspberry Pi

ser = serial.Serial(port=[1], baudrate=[2], timeout=[3])

Drag options to blanks, or click blank then click option'

A"/dev/ttyAMA0"

B115200

C1

D"/dev/ttyS1"

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong port names.

Setting baudrate as a string instead of a number.

This code opens the serial port /dev/ttyAMA0 at 115200 baud with a 1 second timeout for reading.