+SR_PRIV struct sr_scpi_dev_inst *scpi_dev_inst_new(const char *resource,
+ const char *serialcomm);
+SR_PRIV int sr_scpi_open(struct sr_scpi_dev_inst *scpi);
+SR_PRIV int sr_scpi_source_add(struct sr_scpi_dev_inst *scpi, int events,
+ int timeout, sr_receive_data_callback_t cb, void *cb_data);
+SR_PRIV int sr_scpi_source_remove(struct sr_scpi_dev_inst *scpi);
+SR_PRIV int sr_scpi_send(struct sr_scpi_dev_inst *scpi,
+ const char *format, ...);
+SR_PRIV int sr_scpi_send_variadic(struct sr_scpi_dev_inst *scpi,
+ const char *format, va_list args);
+SR_PRIV int sr_scpi_read_begin(struct sr_scpi_dev_inst *scpi);
+SR_PRIV int sr_scpi_read_data(struct sr_scpi_dev_inst *scpi, char *buf, int maxlen);
+SR_PRIV int sr_scpi_read_complete(struct sr_scpi_dev_inst *scpi);
+SR_PRIV int sr_scpi_close(struct sr_scpi_dev_inst *scpi);
+SR_PRIV void sr_scpi_free(struct sr_scpi_dev_inst *scpi);
+
+SR_PRIV int sr_scpi_get_string(struct sr_scpi_dev_inst *scpi,
+ const char *command, char **scpi_response);
+SR_PRIV int sr_scpi_get_bool(struct sr_scpi_dev_inst *scpi,
+ const char *command, gboolean *scpi_response);
+SR_PRIV int sr_scpi_get_int(struct sr_scpi_dev_inst *scpi,
+ const char *command, int *scpi_response);
+SR_PRIV int sr_scpi_get_float(struct sr_scpi_dev_inst *scpi,
+ const char *command, float *scpi_response);
+SR_PRIV int sr_scpi_get_double(struct sr_scpi_dev_inst *scpi,
+ const char *command, double *scpi_response);
+SR_PRIV int sr_scpi_get_opc(struct sr_scpi_dev_inst *scpi);
+SR_PRIV int sr_scpi_get_floatv(struct sr_scpi_dev_inst *scpi,
+ const char *command, GArray **scpi_response);
+SR_PRIV int sr_scpi_get_uint8v(struct sr_scpi_dev_inst *scpi,
+ const char *command, GArray **scpi_response);
+SR_PRIV int sr_scpi_get_hw_id(struct sr_scpi_dev_inst *scpi,
+ struct sr_scpi_hw_info **scpi_response);
+SR_PRIV void sr_scpi_hw_info_free(struct sr_scpi_hw_info *hw_info);