NCS Bare Metal Buttons library

Buttons management module. More...

Data Structures
struct	bm_buttons_config
	Button configuration. More...

Macros
#define	BM_BUTTONS_DETECTION_DELAY_MIN_US    (2 * k_ticks_to_us_ceil32(MAX(1, BM_TIMER_MIN_TIMEOUT_TICKS)))
	Minimum detection delay in microseconds.

Typedefs
typedef void(*	bm_buttons_handler_t) (uint8_t pin_number, enum bm_buttons_evt_type action)
	Button event handler type.

Enumerations
enum	bm_buttons_evt_type { BM_BUTTONS_RELEASE = 0 , BM_BUTTONS_PRESS = 1 }
enum	bm_buttons_active_state { BM_BUTTONS_ACTIVE_LOW = 0 , BM_BUTTONS_ACTIVE_HIGH = 1 }
enum	bm_buttons_pin_pull { BM_BUTTONS_PIN_NOPULL = NRF_GPIO_PIN_NOPULL , BM_BUTTONS_PIN_PULLDOWN = NRF_GPIO_PIN_PULLDOWN , BM_BUTTONS_PIN_PULLUP = NRF_GPIO_PIN_PULLUP }
	Enumerator used for selecting the pin to be pulled down or up at the time of pin configuration. More...

Functions
int	bm_buttons_init (const struct bm_buttons_config *configs, uint8_t num_configs, uint32_t detection_delay)
	Initialize buttons.
int	bm_buttons_deinit (void)
	Deinitialize buttons.
int	bm_buttons_enable (void)
	Enable button detection.
int	bm_buttons_disable (void)
	Disable button detection.
bool	bm_buttons_is_pressed (uint8_t pin)
	Check if a button is being pressed.

Detailed Description

Buttons management module.

The bm_buttons library uses the nrfx_gpiote to detect that a button has been pressed. To handle debouncing, it will start a bm_timer. The button will only be reported as pressed if the corresponding pin is still active when the timer expires. If there is a new GPIOTE event while the timer is running, the timer is restarted.