hitec_rx_link.h

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#ifndef RCBENCH_HITEC_RX_LINK_H
#define RCBENCH_HITEC_RX_LINK_H
 
#include <stdbool.h>
#include <stdint.h>
 
#ifdef __cplusplus
extern "C" {
#endif

#define HITEC_RX_LINK_ACK       0
#define HITEC_RX_LINK_NO_ANSWER (-1)

#define HITEC_RX_LINK_RETRY_MS 500u

typedef enum {
    HITEC_RX_LINK_HELD = 0,
    HITEC_RX_LINK_PENDING,
    HITEC_RX_LINK_REFUSED,
    HITEC_RX_LINK_OLD,
    HITEC_RX_LINK_NO_LINE,
} hitec_rx_link_mark_t;

typedef struct {
    uint32_t sent_ms;   
    uint8_t  want;      
    uint8_t  up;        
    uint8_t  minor;     
    uint8_t  owed;      
    uint8_t  refused;   
    uint8_t  waiting;   
} hitec_rx_link_t;

void hitec_rx_link_init(hitec_rx_link_t *l);

void hitec_rx_link_want(hitec_rx_link_t *l, uint8_t mode);

void hitec_rx_link_came_up(hitec_rx_link_t *l, uint16_t minor);

void hitec_rx_link_lost(hitec_rx_link_t *l);

bool hitec_rx_link_next(const hitec_rx_link_t *l, uint32_t now_ms,
                        uint16_t *value);

void hitec_rx_link_done(hitec_rx_link_t *l, int result, uint32_t now_ms);

hitec_rx_link_mark_t hitec_rx_link_mark(const hitec_rx_link_t *l);
 
#ifdef __cplusplus
}
#endif
 
#endif /* RCBENCH_HITEC_RX_LINK_H */