sai.h

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#ifndef SAFECOMM_SAI_H
#define SAFECOMM_SAI_H
 
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
 
#include "safecomm/status.h"
#include "safecomm/saf/saf.h"
 
#ifdef __cplusplus
extern "C" {
#endif

typedef struct
{
    uint32_t ec_period_ms;  
    uint16_t seq_window;    
    uint8_t  ec_alarm_state; 
} safecomm_sai_config_t;

typedef struct
{
    safecomm_saf_conn_t   *saf;   
    safecomm_sai_config_t  cfg;
    uint16_t seq_tx;
    uint16_t seq_rx;
    bool     seq_rx_valid;
    uint32_t ec_tx;
    uint32_t peer_ec_period_ms;
    double   ratio;         
    double   expected_ec;   
    uint32_t last_rx_ec;
    bool     ec_initialized;
    int      ec_state;      
} safecomm_sai_conn_t;

safecomm_status_t safecomm_sai_init(safecomm_sai_conn_t *conn, safecomm_saf_conn_t *saf,
                                    const safecomm_sai_config_t *cfg);

safecomm_status_t safecomm_sai_start(safecomm_sai_conn_t *conn);

safecomm_status_t safecomm_sai_send(safecomm_sai_conn_t *conn, const uint8_t *pdu, size_t pdu_len);

safecomm_status_t safecomm_sai_recv(safecomm_sai_conn_t *conn, uint8_t *out, size_t out_cap, size_t *out_len);

void safecomm_sai_tick(safecomm_sai_conn_t *conn);
 
#ifdef __cplusplus
}
#endif
 
#endif /* SAFECOMM_SAI_H */