Baud rate and timeout configuration in Raspberry Pi - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set the baud rate to 9600 when opening the serial port.

Raspberry Pi

import serial
ser = serial.Serial('/dev/ttyUSB0', baudrate=[1])

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

A19200

B9600

C4800

D115200

Attempts:

3 left

💡 Hint

Common Mistakes

Using a baud rate that is too high or too low for the device.

The baudrate parameter sets the communication speed. 9600 is a common default baud rate.

2fill in blank

medium

Complete the code to set the timeout to 1 second for the serial connection.

Raspberry Pi

import serial
ser = serial.Serial('/dev/ttyUSB0', baudrate=9600, timeout=[1])

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

A1

B0

CNone

D-1

Attempts:

3 left

💡 Hint

Common Mistakes

Setting timeout to 0 disables waiting, which may cause immediate return.

The timeout parameter sets how long the read waits for data. 1 means 1 second.

3fill in blank

hard

Fix the error in the code to correctly set the baud rate and timeout.

Raspberry Pi

import serial
ser = serial.Serial('/dev/ttyUSB0', baudrate=9600, timeout=[1])

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

A1

BNone

CTrue

D'1'

Attempts:

3 left

💡 Hint

Common Mistakes

Putting quotes around numbers, making them strings.

The timeout must be a number, not a string. So 1 (integer) is correct, not '1' (string).

4fill in blank

hard

Fill both blanks to create a serial connection with baud rate 115200 and timeout 0.5 seconds.

Raspberry Pi

import serial
ser = serial.Serial('/dev/ttyUSB0', baudrate=[1], timeout=[2])

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

A115200

B9600

C0.5

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing baud rate and timeout values or using wrong types.

115200 is a common high baud rate. Timeout 0.5 means half a second wait time.

5fill in blank

hard

Fill all three blanks to open a serial port '/dev/ttyS1' with baud rate 19200, timeout 2 seconds, and write timeout 1 second.

Raspberry Pi

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

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

A'/dev/ttyS1'

B19200

C2

D'/dev/ttyUSB0'

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting quotes around port name or using wrong baud rate.

Use the correct port string '/dev/ttyS1', baud rate 19200, and timeout 2 seconds.