SR_PRIV int hp_3478a_get_status_bytes(const struct sr_dev_inst *sdi);
SR_PRIV int hp_3478a_receive_data(int fd, int revents, void *cb_data);
SR_PRIV int hp_3478a_get_status_bytes(const struct sr_dev_inst *sdi);
SR_PRIV int hp_3478a_receive_data(int fd, int revents, void *cb_data);