infrared.h

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#pragma once
#include <stdbool.h>
#include <stdint.h>

// TYPES

typedef struct hw_infrared_rx_t {
  void *ctx; 
} hw_infrared_rx_t;

typedef enum hw_infrared_event_t {
  HW_INFRARED_EVENT_TIMEOUT = (1 << 0),
  HW_INFRARED_EVENT_MARK = (1 << 1),
  HW_INFRARED_EVENT_SPACE = (1 << 2)
} hw_infrared_event_t;

typedef void (*hw_infrared_rx_callback_t)(hw_infrared_event_t event,
                                          uint32_t duration_us,
                                          void *user_data);

// LIFECYCLE

hw_infrared_rx_t hw_infrared_rx_init(uint8_t gpio,
                                     hw_infrared_rx_callback_t callback,
                                     void *user_data);

bool hw_infrared_rx_valid(hw_infrared_rx_t *rx);

void hw_infrared_rx_finalize(hw_infrared_rx_t *rx);