ext_sens.h

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#ifndef EXT_SENS_H
#define EXT_SENS_H
 
#include <stdint.h>
#include "vl53l1x.h"
#include "sensor_bus.h"
 
#define EXT_PERIOD_MS   10u
#define EXT_PROBE_MS    5000u
#define EXT_ERR_LIMIT   50u      
enum { EXT_TOF = 1, EXT_FLOW = 2 };
 
typedef struct {
    uint8_t  kind;            
    uint8_t  status;          
    uint16_t tof_mm;
    int16_t  dx, dy;          
    uint8_t  squal;
    float    dt_s;            
    uint32_t t_ms;
} ext_sample_t;
 
typedef struct {
    vl53_bus_t   tof;
    sensor_bus_t flow;
} ext_buses_t;
 
/* ---- logic (ExtTask context; host-testable) ---- */
void     ext_init(const ext_buses_t *buses);
void     ext_step(uint32_t now_ms);       
/* ---- RTOS shell (firmware only) ---- */
void     ext_sens_start(void);            
/* ---- readers ---- */
int      ext_take(ext_sample_t *s);       
uint16_t ext_sensors(void);               
uint32_t ext_errors(void);
 
#endif /* EXT_SENS_H */