GPS module data reading in Raspberry Pi - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the module needed to read serial data from the GPS module.

Raspberry Pi

import [1]

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

Aserial

Bgps

Ctime

Dos

Attempts:

3 left

💡 Hint

Common Mistakes

Importing 'gps' which is not a standard Python module for serial communication.

Importing 'time' or 'os' which are unrelated to serial data reading.

The serial module is used to read data from the GPS module via serial communication.

2fill in blank

medium

Complete the code to open the serial port to read GPS data at 9600 baud rate.

Raspberry Pi

ser = serial.Serial('/dev/ttyS0', [1])

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

A9600

B115200

C4800

D19200

Attempts:

3 left

💡 Hint

Common Mistakes

Using a baud rate that does not match the GPS module's setting, causing no data to be read.

Using 4800 which is an older standard but not common for modern GPS modules.

The GPS module commonly communicates at 9600 baud rate, so we set it accordingly.

3fill in blank

hard

Fix the error in reading a line from the GPS serial port.

Raspberry Pi

line = ser.[1]()

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

Areadlinee

Breadline

Creadlines

Dread

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'readlines' which reads all lines and returns a list, not suitable here.

Typo in method name like 'readlinee' causing AttributeError.

The readline() method reads one line of data from the serial port, which is needed to get one GPS sentence.

4fill in blank

hard

Fill both blanks to decode the GPS data line and check if it starts with the correct prefix.

Raspberry Pi

data = line.[1]('utf-8')
if data.[2]('$GPGGA'):

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Adecode

Bstartswith

Csplit

Dstrip

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to use 'split' or 'strip' instead of 'startswith' to check the prefix.

Not decoding bytes before checking the string.

GPS data from serial is bytes, so we decode it to a string. Then we check if the string starts with '$GPGGA' which is a GPS sentence type.

5fill in blank

hard

Fill all three blanks to create a dictionary with latitude, longitude, and fix quality from the GPS data fields.

Raspberry Pi

fields = data.split(',')
gps_info = { [1]: fields[int([2])], [3]: fields[4], 'fix_quality': fields[6] }

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

A'latitude'

B2

C'longitude'

D4

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up field indexes for latitude and longitude.

Using wrong keys or forgetting to quote dictionary keys.

The latitude is in field 2, longitude in field 4, and fix quality in field 6. We create keys 'latitude' and 'longitude' for those fields.