SPI with SD card module in Arduino - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to include the SD library needed for SPI communication with the SD card module.

Arduino

#include <[1]>

void setup() {
  Serial.begin(9600);
}

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ASPI.h

BWire.h

CSD.h

DEEPROM.h

Attempts:

3 left

💡 Hint

Common Mistakes

Including SPI.h instead of SD.h

Including Wire.h which is for I2C communication

Forgetting to include any library

The SD library is required to communicate with the SD card module over SPI.

2fill in blank

medium

Complete the code to initialize the SD card on chip select pin 10.

Arduino

const int chipSelect = [1];

void setup() {
  Serial.begin(9600);
  if (!SD.begin(chipSelect)) {
    Serial.println("Initialization failed!");
    return;
  }
  Serial.println("Initialization done.");
}

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A4

B7

C13

D10

Attempts:

3 left

💡 Hint

Common Mistakes

Using pin 13 which is the SPI clock pin

Using pin 4 which is sometimes used but not standard

Using pin 7 which is unrelated

Pin 10 is commonly used as the chip select pin for SD card modules on Arduino Uno.

3fill in blank

hard

Fix the error in the code to open a file named "test.txt" for writing.

Arduino

File dataFile = SD.[1]("test.txt", FILE_WRITE);

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Aopen

BopenFile

CopenNextFile

Attempts:

3 left

💡 Hint

Common Mistakes

Using openFile which does not exist

Using openNextFile which is for directory iteration

Using open with wrong capitalization

The correct function to open a file on the SD card is SD.open().

4fill in blank

hard

Fill both blanks to write the string "Hello" to the file and then close it.

Arduino

File dataFile = SD.open("test.txt", FILE_WRITE);
if (dataFile) {
  dataFile.[1]("Hello");
  dataFile.[2]();
} else {
  Serial.println("Error opening file");
}

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Aprint

Bwrite

Cclose

Dflush

Attempts:

3 left

💡 Hint

Common Mistakes

Using write() which writes bytes, not strings

Using flush() instead of close()

Forgetting to close the file

Use print() to write text and close() to close the file properly.

5fill in blank

hard

Fill all three blanks to read from "test.txt" and print each character to Serial until the file ends.

Arduino

File dataFile = SD.open("test.txt");
if (dataFile) {
  while (dataFile.[1]()) {
    char c = dataFile.[2]();
    Serial.[3](c);
  }
  dataFile.close();
} else {
  Serial.println("Error opening file");
}

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Aavailable

Bread

Cprint

Dpeek

Attempts:

3 left

💡 Hint

Common Mistakes

Using peek() which only previews data

Using write() instead of print() for Serial output

Not checking if data is available before reading

Use available() to check if data remains, read() to get a character, and print() to output it.