Stuff

typedef struct
{
    super_tone_rx_descriptor_t *desc;
    float energy;
    float total_energy;
    int detected_tone;
    int rotation;
    void (*tone_callback)(void *data, int code);
    void (*segment_callback)(void *data, int f1, int f2, int duration);
    void *callback_data;
    super_tone_rx_segment_t segments[11];
    goertzel_state_t state[0];
    uint8_t filler[80];
} super_tone_rx_state_t;