Wake-up sources configuration in Embedded C - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to enable the wake-up source for the timer.

Embedded C

WAKEUP_EnableSource([1]);

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AWAKEUP_SOURCE_GPIO

BWAKEUP_SOURCE_UART

CWAKEUP_SOURCE_TIMER

DWAKEUP_SOURCE_ADC

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing a wake-up source unrelated to the timer.

Using a peripheral name instead of a wake-up source constant.

The timer wake-up source is enabled by passing WAKEUP_SOURCE_TIMER to the function.

2fill in blank

medium

Complete the code to configure the GPIO pin as a wake-up source.

Embedded C

WAKEUP_ConfigGPIO([1], GPIO_PIN_5);

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AGPIO_PORT_B

BGPIO_PORT_C

CGPIO_PORT_A

DGPIO_PORT_D

Attempts:

3 left

💡 Hint

Common Mistakes

Selecting the wrong GPIO port.

Confusing pin numbers with port names.

GPIO_PORT_B is the correct port to configure pin 5 as a wake-up source.

3fill in blank

hard

Fix the error in the code to correctly disable the UART wake-up source.

Embedded C

WAKEUP_DisableSource([1]);

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AWAKEUP_SOURCE_TIMER

BWAKEUP_SOURCE_GPIO

CWAKEUP_SOURCE_ADC

DWAKEUP_SOURCE_UART

Attempts:

3 left

💡 Hint

Common Mistakes

Passing the wrong wake-up source constant.

Confusing enable and disable functions.

To disable the UART wake-up source, WAKEUP_SOURCE_UART must be passed to the function.

4fill in blank

hard

Fill both blanks to configure and enable the ADC as a wake-up source.

Embedded C

WAKEUP_ConfigADC([1]);
WAKEUP_EnableSource([2]);

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AADC_CHANNEL_3

BADC_CHANNEL_5

CWAKEUP_SOURCE_ADC

DWAKEUP_SOURCE_TIMER

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing ADC channels with wake-up source constants.

Enabling the wrong wake-up source.

ADC_CHANNEL_5 is configured and WAKEUP_SOURCE_ADC is enabled as the wake-up source.

5fill in blank

hard

Fill all three blanks to create a wake-up source dictionary with GPIO and Timer sources.

Embedded C

const WakeupSourceConfig wakeup_sources = {
    [1]: GPIO_PIN_7,
    [2]: TIMER_2,
    [3]: UART_1
};

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AWAKEUP_SOURCE_GPIO

BWAKEUP_SOURCE_TIMER

CWAKEUP_SOURCE_UART

DWAKEUP_SOURCE_ADC

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect constants for the dictionary keys.

Mixing up peripheral names and wake-up source constants.

The dictionary keys must be the wake-up source constants for GPIO, Timer, and UART respectively.