Wake-up sources in ARM Architecture - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the sentence to identify a common wake-up source in ARM systems.

ARM Architecture

A typical wake-up source from low power mode is a [1].

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

Atimer

Bkeyboard

Cscreen

Dbattery

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'keyboard' which is an input device but not always a wake-up source.

Selecting 'screen' which is an output device.

A timer is a common wake-up source that triggers the processor to resume operation after a set time.

2fill in blank

medium

Complete the sentence to name a hardware event that can wake up an ARM processor.

ARM Architecture

An external [1] signal can be used as a wake-up source.

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

Areset

Bdisplay

Cinterrupt

Dpower

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'reset' which restarts the system but is not a wake-up source.

Selecting 'display' which is unrelated to wake-up signals.

An external interrupt signal is commonly used to wake up the processor from sleep or low power modes.

3fill in blank

hard

Fix the error in the statement about wake-up sources.

ARM Architecture

The [1] source is not used to wake up ARM processors from low power mode.

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

Ainterrupt

Bpower button

Ctimer

Dnetwork

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'power button' which is a common wake-up source.

Selecting 'timer' which is also a valid wake-up source.

Network activity is generally not a direct wake-up source for ARM processors; other hardware signals like interrupts or timers are used.

4fill in blank

hard

Fill both blanks to complete the dictionary comprehension describing wake-up sources and their types.

ARM Architecture

wake_sources = {"timer": "[1]", "gpio": "[2]"}

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

Ahardware

Bsoftware

Cinput

Doutput

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'software' which is incorrect for these physical sources.

Choosing 'input' or 'output' which describe signal direction, not source type.

Both timer and GPIO are hardware wake-up sources, so the value for each is 'hardware'.

5fill in blank

hard

Fill all three blanks to complete the set describing wake-up sources, their triggers, and power modes.

ARM Architecture

wake_sources = {"rtc": "[1]", "usb": "[2]", "power_button": "[3]"}

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

Atimer

Binterrupt

Chardware

Dsoftware

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing software and hardware incorrectly.

Confusing triggers like timer and interrupt.

The RTC uses a timer trigger, USB uses interrupts, and the power button is a hardware wake-up source.