+
+static int get_flags(unsigned char *configblock)
+{
+ int flags;
+
+ flags = (configblock[32] | (configblock[33] << 8)) & 0x1fff;
+ sr_spew("Read flags (0x%.4x).", flags);
+
+ return flags;
+}
+
+static int set_flags(unsigned char *configblock, int flags)
+{
+
+ sr_spew("Setting flags to 0x%.4x.", flags);
+ configblock[32] = flags & 0xff;
+ configblock[33] = (flags >> 8) & 0x1f;
+
+ return flags;
+}
+
+SR_PRIV int lascar_is_logging(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ struct sr_usb_dev_inst *usb;
+ int dummy, flags, ret;
+
+ devc = sdi->priv;
+ usb = sdi->conn;
+
+ if (lascar_get_config(usb->devhdl, devc->config, &dummy) != SR_OK)
+ return -1;
+
+ flags = get_flags(devc->config);
+ if (flags & 0x0100)
+ ret = 1;
+ else
+ ret = 0;
+
+ return ret;
+}
+
+SR_PRIV int lascar_start_logging(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ struct sr_usb_dev_inst *usb;
+ int len, flags, ret;
+
+ devc = sdi->priv;
+ usb = sdi->conn;
+
+ if (lascar_get_config(usb->devhdl, devc->config, &len) != SR_OK)
+ return SR_ERR;
+
+ /* Turn on logging. */
+ flags = get_flags(devc->config);
+ flags |= 0x0100;
+ set_flags(devc->config, flags);
+
+ /* Start logging in 0 seconds. */
+ memset(devc->config + 24, 0, 4);
+
+ ret = lascar_save_config(usb->devhdl, devc->config, len);
+ sr_info("Started internal logging.");
+
+ return ret;
+}
+
+SR_PRIV int lascar_stop_logging(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ struct sr_usb_dev_inst *usb;
+ int len, flags, ret;
+
+ devc = sdi->priv;
+ usb = sdi->conn;
+
+ if (lascar_get_config(usb->devhdl, devc->config, &len) != SR_OK)
+ return SR_ERR;
+
+ flags = get_flags(devc->config);
+ flags &= ~0x0100;
+ set_flags(devc->config, flags);
+
+ ret = lascar_save_config(usb->devhdl, devc->config, len);
+ sr_info("Stopped internal logging.");
+
+ return ret;
+}
+