Input logic (pure)

Debounce + press-edge detection + button->ui_event mapping, no hardware. More...

Collaboration diagram for Input logic (pure):

Files
file	components/services/input/input_logic.c
	Pure debounce + press-edge detection + button->ui_event mapping (no hardware).

Data Structures
struct	input_debounce_t
	Debounce/edge state. Zero-initialise before the first call (memset or {0}). More...

Macros
#define	INPUT_BTN_COUNT   6
	Number of physical buttons handled (5 expander + A).
#define	INPUT_DEBOUNCE_MS   30
	Leading-edge lockout in ms: a button's press is accepted only this long after the previous accepted press, which swallows contact bounce (must exceed the bounce duration).

Functions
int	input_logic_update (input_debounce_t *st, uint8_t exp_port, bool a_pressed, uint32_t now_ms, ui_event_t *out, int out_cap)
	Fold one button sample into the debounce state, emitting just-pressed UI events.

Detailed Description

Debounce + press-edge detection + button->ui_event mapping, no hardware.

Macro Definition Documentation

INPUT_BTN_COUNT

#define INPUT_BTN_COUNT   6

Number of physical buttons handled (5 expander + A).

INPUT_DEBOUNCE_MS

#define INPUT_DEBOUNCE_MS   30

Leading-edge lockout in ms: a button's press is accepted only this long after the previous accepted press, which swallows contact bounce (must exceed the bounce duration).

Function Documentation

input_logic_update()

int input_logic_update	(	input_debounce_t *	st,
		uint8_t	exp_port,
		bool	a_pressed,
		uint32_t	now_ms,
		ui_event_t *	out,
		int	out_cap )

Fold one button sample into the debounce state, emitting just-pressed UI events.

Detects the rising edge (released -> pressed) of each button and, if it clears the INPUT_DEBOUNCE_MS lockout, appends that button's ui_event_t to out. Releases and holds emit nothing; the expander's IO7 (charger INOKB) is never a button and is ignored.

Parameters

	st	Debounce state, carried across calls (zero-initialised on first use).
	exp_port	Raw expander input port byte (bit n = channel n; buttons are active-low).
	a_pressed	A button pressed (true when GPIO39 reads high — A is active-high).
	now_ms	Monotonic timestamp in ms (e.g. esp_timer_get_time()/1000).
[out]	out	Receives the events for newly pressed buttons.
	out_cap	Capacity of out (use INPUT_BTN_COUNT to never truncate).

Returns

Number of events written to out (0..out_cap).