quasar_button.h

This module configures buttons and provides functions to control each of them.

Copyright

Copyright (C) 2026 SPARK Microsystems International Inc. All rights reserved.

License

This source code is proprietary and subject to the SPARK Microsystems Software EULA found in this package in file EULA.txt.

Author

SPARK FW Team.

Typedefs

typedef enum quasar_button_selection quasar_button_selection_t

Quasar BSP button peripherals selection.

Enums

enum quasar_button_selection

Quasar BSP button peripherals selection.

Values:

enumerator QUASAR_BUTTON_USER_1

User application button.

enumerator QUASAR_BUTTON_USER_2

User application button.

enumerator QUASAR_BUTTON_USER_3

User application button.

enumerator QUASAR_BUTTON_USER_4

User application button.

Functions

void quasar_button_init(void)

Initialize button peripherals.

void quasar_button_deinit(void)

Deinitialize button peripherals.

void quasar_button_configure_irq(quasar_button_selection_t button_selection, quasar_irq_priority_t irq_priority)

Configure and enable the interrupt for the selected button.

Parameters:

• button_selection – [in] Selected button.

• irq_priority – [in] IRQ priority.

void quasar_button_enable_irq(quasar_button_selection_t button_selection)

Enable the interrupt for the selected button.

Parameters:

button_selection – [in] Selected button.

void quasar_button_disable_irq(quasar_button_selection_t button_selection)

Disable the interrupt for the selected button.

Parameters:

button_selection – [in] Selected button.

void quasar_button_set_button1_callback(void (*irq_callback)(void))

Set button 1 interrupt callback.

Parameters:

irq_callback – [in] Button 1 callback.

void quasar_button_set_button2_callback(void (*irq_callback)(void))

Set button 2 interrupt callback.

Parameters:

irq_callback – [in] Button 2 callback.

void quasar_button_set_button3_callback(void (*irq_callback)(void))

Set button 3 interrupt callback.

Note

The same EXTI is also used for USB detection.

Parameters:

irq_callback – [in] Button 3 callback.

void quasar_button_set_button4_callback(void (*irq_callback)(void))

Set button 4 interrupt callback.

Parameters:

irq_callback – [in] Button 4 callback.

bool quasar_button_read_state(quasar_button_selection_t button_peripheral)

Read button state.

Note

The GPIO must have been initialized in input mode. Since the button is connected to VDD and the GPIO has a pull-down resistor, the return value is true if the button is pressed, false otherwise.

Parameters:

button_peripheral – [in] Selected button peripheral.

Returns:

Return true if the button is pressed, flase otherwise.