Chip select management in Embedded C - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to activate the chip select line.

Embedded C

GPIO_WritePin(GPIOA, [1], GPIO_PIN_RESET);

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AGPIO_PIN_4

BGPIO_PIN_5

CGPIO_PIN_6

DGPIO_PIN_7

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong GPIO pin number.

Setting the pin to GPIO_PIN_SET instead of GPIO_PIN_RESET.

The chip select line is connected to GPIO_PIN_4, so setting it low activates the chip.

2fill in blank

medium

Complete the code to deactivate the chip select line.

Embedded C

GPIO_WritePin(GPIOA, GPIO_PIN_4, [1]);

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AGPIO_PIN_RESET

BGPIO_PIN_TOGGLE

CGPIO_PIN_SET

DGPIO_PIN_HIGH

Attempts:

3 left

💡 Hint

Common Mistakes

Using GPIO_PIN_RESET instead of GPIO_PIN_SET.

Using undefined constants like GPIO_PIN_HIGH.

Setting the chip select pin high deactivates the chip.

3fill in blank

hard

Fix the error in the chip select initialization code.

Embedded C

GPIO_InitTypeDef GPIO_InitStruct = {0};
GPIO_InitStruct.Pin = [1];
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

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AGPIO_PIN_5

BGPIO_PIN_4

CGPIO_PIN_7

DGPIO_PIN_6

Attempts:

3 left

💡 Hint

Common Mistakes

Initializing the wrong GPIO pin.

Forgetting to initialize the chip select pin.

The chip select pin is GPIO_PIN_4, so it must be set in the initialization.

4fill in blank

hard

Fill both blanks to create a function that activates and then deactivates chip select.

Embedded C

void ChipSelectControl() {
    GPIO_WritePin(GPIOA, [1], GPIO_PIN_RESET);
    HAL_Delay(10);
    GPIO_WritePin(GPIOA, [2], GPIO_PIN_SET);
}

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AGPIO_PIN_4

BGPIO_PIN_5

CGPIO_PIN_6

DGPIO_PIN_7

Attempts:

3 left

💡 Hint

Common Mistakes

Using different pins for activation and deactivation.

Using pins other than GPIO_PIN_4.

The chip select pin is GPIO_PIN_4 for both activation and deactivation.

5fill in blank

hard

Fill all three blanks to implement a safe chip select toggle with delay and pin initialization.

Embedded C

GPIO_InitTypeDef GPIO_InitStruct = {0};
GPIO_InitStruct.Pin = [1];
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

GPIO_WritePin(GPIOA, [2], GPIO_PIN_RESET);
HAL_Delay(5);
GPIO_WritePin(GPIOA, [3], GPIO_PIN_SET);

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AGPIO_PIN_4

BGPIO_PIN_5

CGPIO_PIN_6

DGPIO_PIN_7

Attempts:

3 left

💡 Hint

Common Mistakes

Using different pins in initialization and toggling.

Forgetting to initialize the chip select pin.

All operations use GPIO_PIN_4 for chip select initialization and toggling.