SR_PRIV int va_va18b_receive_data(int fd, int revents, void *cb_data);
SR_PRIV int metex_m3640d_receive_data(int fd, int revents, void *cb_data);
SR_PRIV int peaktech_4370_receive_data(int fd, int revents, void *cb_data);
SR_PRIV int va_va18b_receive_data(int fd, int revents, void *cb_data);
SR_PRIV int metex_m3640d_receive_data(int fd, int revents, void *cb_data);
SR_PRIV int peaktech_4370_receive_data(int fd, int revents, void *cb_data);