Multi-channel ADC scanning in Embedded C - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start ADC conversion.

Embedded C

ADC_Start([1]);

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AADC_CHANNEL_2

BADC_CHANNEL_1

CADC_CHANNEL_0

DADC_CHANNEL_3

Attempts:

3 left

💡 Hint

Common Mistakes

Using a channel number that is not defined or out of range.

The function ADC_Start requires the channel number to start conversion. Here, ADC_CHANNEL_0 is the first channel.

2fill in blank

medium

Complete the code to read the ADC value from the specified channel.

Embedded C

uint16_t value = ADC_Read([1]);

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AADC_CHANNEL_1

BADC_CHANNEL_2

CADC_CHANNEL_3

DADC_CHANNEL_0

Attempts:

3 left

💡 Hint

Common Mistakes

Reading from a channel that was not started or configured.

The ADC_Read function reads the value from the given channel. Here, ADC_CHANNEL_0 is used to read from the first channel.

3fill in blank

hard

Fix the error in the code to correctly configure ADC for multi-channel scanning.

Embedded C

ADC_ConfigTypeDef adcConfig;
adcConfig.scanConvMode = [1];
adcConfig.continuousConvMode = ENABLE;

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ADISABLE

BENABLE

CSTART

DSTOP

Attempts:

3 left

💡 Hint

Common Mistakes

Setting scan mode to DISABLE disables multi-channel scanning.

To enable multi-channel scanning, scanConvMode must be set to ENABLE.

4fill in blank

hard

Fill both blanks to set the number of channels and the first channel in the ADC sequence.

Embedded C

adcConfig.NbrOfConversion = [1];
adcConfig.Channel = [2];

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A3

BADC_CHANNEL_0

CADC_CHANNEL_1

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Setting the wrong number of conversions or wrong starting channel.

The number of conversions is set to 3, and the first channel in the sequence is ADC_CHANNEL_0.

5fill in blank

hard

Fill all three blanks to complete the loop that reads ADC values from multiple channels.

Embedded C

for (int i = 0; i < [1]; i++) {
    adcValues[i] = ADC_Read([2] + i);
}
ProcessValues(adcValues, [3]);

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A4

BADC_CHANNEL_0

D3

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong loop count or wrong channel start index.

The loop runs 3 times to read 3 channels starting from ADC_CHANNEL_0. The processing function is called with 3 values.