input_logic.h File Reference

Pure button-state -> UI-event logic: debounce + press-edge detection + mapping. More...

#include "event.h"
#include <stdint.h>
#include <stdbool.h>

Go to the source code of this file.

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

Pure button-state -> UI-event logic: debounce + press-edge detection + mapping.

The hardware-free core of the Input service service, split out so it can be exercised off-target (test/host/input_test.c). It takes a raw expander input byte, the A button level, and a millisecond timestamp, and returns the UI events for buttons that were just pressed. No I2C, no ISR, no RTC: feed it samples, get events. The service (input.c) supplies the real samples from the IRQ-driven task.

Note

Développé avec l'assistance de Claude Opus 4.8 (Anthropic), sous la direction de Y. Dos Santos : spécification, revue et validation sur cible par l'auteur.