i2cdetect for device scanning in Raspberry Pi - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to scan I2C devices on bus 1 using i2cdetect.

Raspberry Pi

sudo i2cdetect -y [1]

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

A1

B3

C2

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Using bus number 0 instead of 1

Omitting the '-y' flag which disables interactive mode

The Raspberry Pi commonly uses I2C bus 1 for device communication. The command sudo i2cdetect -y 1 scans this bus for connected devices.

2fill in blank

medium

Complete the command to scan I2C bus 1 and show addresses in hexadecimal.

Raspberry Pi

sudo i2cdetect -y [1]

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

A1

B0

C16

D2

Attempts:

3 left

💡 Hint

Common Mistakes

Using an incorrect bus number

Trying to add extra options for hex display which is default

The -y option disables interactive mode, and the bus number 1 is the standard I2C bus on Raspberry Pi. The addresses are shown in hexadecimal by default.

3fill in blank

hard

Fix the error in the command to scan I2C bus 1 without confirmation prompts.

Raspberry Pi

sudo i2cdetect [1] 1

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

A-h

B-r

C-y

D-v

Attempts:

3 left

💡 Hint

Common Mistakes

Using -r which is for read mode

Using -h which shows help

Using -v which is verbose mode

The -y option disables the confirmation prompt, allowing the scan to run automatically on bus 1.

4fill in blank

hard

Fill both blanks to scan I2C bus 1 and show addresses in decimal format.

Raspberry Pi

sudo i2cdetect [1] [2]

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

A-y

B-d

C1

D-r

Attempts:

3 left

💡 Hint

Common Mistakes

Using -d to try to get decimal output

Forgetting to specify the bus number

The -y option disables confirmation prompts, and 1 specifies the I2C bus. The -d option is not valid for decimal display; i2cdetect shows addresses in hex by default.

5fill in blank

hard

Fill all three blanks to scan I2C bus 1, disable confirmation, and perform a quick scan.

Raspberry Pi

sudo i2cdetect [1] [2] [3]

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

A-r

B1

C-y

D-q

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up -r and -q

Omitting the bus number

The -y option disables confirmation prompts, 1 specifies the I2C bus, and -q performs a quick scan.