SR_PRIV int digitek_dt4000zc_receive_data(int fd, int revents, void *cb_data);
SR_PRIV int tekpower_tp4000zc_receive_data(int fd, int revents, void *cb_data);
SR_PRIV int metex_me31_receive_data(int fd, int revents, void *cb_data);
SR_PRIV int digitek_dt4000zc_receive_data(int fd, int revents, void *cb_data);
SR_PRIV int tekpower_tp4000zc_receive_data(int fd, int revents, void *cb_data);
SR_PRIV int metex_me31_receive_data(int fd, int revents, void *cb_data);