]> sigrok.org Git - libsigrok.git/blobdiff - src/hardware/scpi-pps/api.c
Change type of SR_CONF keys to uint32_t.
[libsigrok.git] / src / hardware / scpi-pps / api.c
index ec84db74eabf856bcb6224bde03782a744bf937f..aea3bd5e26833c95cee54ea3c7e850dc98cfcd61 100644 (file)
 
 SR_PRIV struct sr_dev_driver scpi_pps_driver_info;
 static struct sr_dev_driver *di = &scpi_pps_driver_info;
-SR_PRIV const struct scpi_pps pps_profiles[] = {};
-unsigned int num_pps_profiles;
+extern unsigned int num_pps_profiles;
+extern const struct scpi_pps pps_profiles[];
 
-static const int32_t scanopts[] = {
+static const uint32_t scanopts[] = {
        SR_CONF_CONN,
        SR_CONF_SERIALCOMM,
 };
 
+static struct pps_channel_instance pci[] = {
+       { SR_MQ_VOLTAGE, SCPI_CMD_GET_MEAS_VOLTAGE, "V" },
+       { SR_MQ_CURRENT, SCPI_CMD_GET_MEAS_CURRENT, "I" },
+       { SR_MQ_POWER, SCPI_CMD_GET_MEAS_POWER, "P" },
+};
+
 static int init(struct sr_context *sr_ctx)
 {
        return std_init(sr_ctx, di, LOG_PREFIX);
@@ -43,10 +49,16 @@ static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)
        struct sr_channel_group *cg;
        struct sr_channel *ch;
        const struct scpi_pps *device;
+       struct pps_channel *pch;
        const struct channel_group_spec *cgs;
        struct pps_channel_group *pcg;
+       GRegex *model_re;
+       GMatchInfo *model_mi;
+       GSList *l;
        uint64_t mask;
-       unsigned int i, j;
+       unsigned int ch_num, ch_idx, i, j;
+       const char *vendor;
+       char ch_name[16];
 
        if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
                sr_info("Couldn't get IDN response.");
@@ -55,18 +67,23 @@ static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)
 
        device = NULL;
        for (i = 0; i < num_pps_profiles; i++) {
-               if (!strcasecmp(hw_info->manufacturer, pps_profiles[i].idn_vendor) &&
-                               !strcmp(hw_info->model, pps_profiles[i].idn_model)) {
+               vendor = get_vendor(hw_info->manufacturer);
+               if (strcasecmp(vendor, pps_profiles[i].vendor))
+                       continue;
+               model_re = g_regex_new(pps_profiles[i].model, 0, 0, NULL);
+               if (g_regex_match(model_re, hw_info->model, 0, &model_mi))
                        device = &pps_profiles[i];
+               g_match_info_unref(model_mi);
+               g_regex_unref(model_re);
+               if (device)
                        break;
-               }
        }
        if (!device) {
                sr_scpi_hw_info_free(hw_info);
                return NULL;
        }
 
-       sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, device->vendor, device->idn_model,
+       sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, vendor, hw_info->model,
                        hw_info->firmware_version);
        sdi->conn = scpi;
        sdi->driver = di;
@@ -75,10 +92,22 @@ static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)
        devc->device = device;
        sdi->priv = devc;
 
-       for (i = 0; i < device->num_channels; i++) {
-               ch = sr_channel_new(i, SR_CHANNEL_ANALOG, TRUE,
-                               device->channels[i].name);
-               sdi->channels = g_slist_append(sdi->channels, ch);
+       ch_idx = 0;
+       for (ch_num = 0; ch_num < device->num_channels; ch_num++) {
+               /* Create one channel per measurable output unit. */
+               for (i = 0; i < ARRAY_SIZE(pci); i++) {
+                       if (!scpi_cmd_get(sdi, pci[i].command))
+                               continue;
+                       g_snprintf(ch_name, 16, "%s%s", pci[i].prefix,
+                                       device->channels[ch_num].name);
+                       ch = sr_channel_new(ch_idx++, SR_CHANNEL_ANALOG, TRUE, ch_name);
+                       pch = g_malloc0(sizeof(struct pps_channel));
+                       pch->hw_output_idx = ch_num;
+                       pch->hwname = device->channels[ch_num].name;
+                       pch->mq = pci[i].mq;
+                       ch->priv = pch;
+                       sdi->channels = g_slist_append(sdi->channels, ch);
+               }
        }
 
        for (i = 0; i < device->num_channel_groups; i++) {
@@ -87,8 +116,12 @@ static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)
                cg->name = g_strdup(cgs->name);
                for (j = 0, mask = 1; j < 64; j++, mask <<= 1) {
                        if (cgs->channel_index_mask & mask) {
-                               ch = g_slist_nth_data(sdi->channels, j);
-                               cg->channels = g_slist_append(cg->channels, ch);
+                               for (l = sdi->channels; l; l = l->next) {
+                                       ch = l->data;
+                                       pch = ch->priv;
+                                       if (pch->hw_output_idx == j)
+                                               cg->channels = g_slist_append(cg->channels, ch);
+                               }
                        }
                }
                pcg = g_malloc0(sizeof(struct pps_channel_group));
@@ -157,14 +190,16 @@ static int cleanup(void)
        return SR_OK;
 }
 
-static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
+static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
                const struct sr_channel_group *cg)
 {
        struct dev_context *devc;
        struct sr_scpi_dev_inst *scpi;
        struct sr_channel *ch;
-       double d;
-       int ret;
+       struct pps_channel *pch;
+       const GVariantType *gvtype;
+       unsigned int i;
+       int cmd, ret;
        char *s;
 
        if (!sdi)
@@ -173,47 +208,91 @@ static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
        devc = sdi->priv;
        scpi = sdi->conn;
 
-       ret = SR_OK;
-       if (!cg) {
-               /* No channel group: global options. */
-               switch (key) {
-               case SR_CONF_OVER_TEMPERATURE_PROTECTION:
-                       ret = SR_ERR;
-                       if (scpi_cmd(sdi, SCPI_CMD_GET_OVER_TEMPERATURE_PROTECTION) == SR_OK) {
-                               if (sr_scpi_get_string(scpi, NULL, &s) == SR_OK) {
-                                       *data = g_variant_new_boolean(!strcmp(s, "ON"));
-                                       ret = SR_OK;
-                               }
-                       }
-                       break;
-                       return SR_ERR_NA;
-                       break;
-               case SR_CONF_OUTPUT_CHANNEL_CONFIG:
-                       ret = SR_ERR;
-                       if (scpi_cmd(sdi, SCPI_CMD_GET_OUTPUT_CHANNEL_CONFIG) == SR_OK) {
-                               if (sr_scpi_get_string(scpi, NULL, &s) == SR_OK) {
-                                       *data = g_variant_new_string(s);
-                                       g_free(s);
-                                       ret = SR_OK;
-                               }
-                       }
-                       break;
-               default:
-                       return SR_ERR_NA;
-               }
-       } else {
+       if (cg) {
                /*
                 * These options only apply to channel groups with a single
                 * channel -- they're per-channel settings for the device.
                 */
-               if (g_slist_length(cg->channels) > 1)
-                       return SR_ERR_NA;
+
+               /*
+                * Config keys are handled below depending on whether a channel
+                * group was provided by the frontend. However some of these
+                * take a CG on one PPS but not on others. Check the device's
+                * profile for that here, and NULL out the channel group as needed.
+                */
+               for (i = 0; i < devc->device->num_devopts; i++) {
+                       if (devc->device->devopts[i] == key) {
+                               cg = NULL;
+                               break;
+                       }
+               }
+
                ch = cg->channels->data;
+               pch = ch->priv;
+       }
 
+       gvtype = NULL;
+       cmd = -1;
+       switch (key) {
+       case SR_CONF_OUTPUT_ENABLED:
+               gvtype = G_VARIANT_TYPE_BOOLEAN;
+               cmd = SCPI_CMD_GET_OUTPUT_ENABLED;
+               break;
+       case SR_CONF_OUTPUT_VOLTAGE:
+               gvtype = G_VARIANT_TYPE_DOUBLE;
+               cmd = SCPI_CMD_GET_MEAS_VOLTAGE;
+               break;
+       case SR_CONF_OUTPUT_VOLTAGE_MAX:
+               gvtype = G_VARIANT_TYPE_DOUBLE;
+               cmd = SCPI_CMD_GET_VOLTAGE_MAX;
+               break;
+       case SR_CONF_OUTPUT_CURRENT:
+               gvtype = G_VARIANT_TYPE_DOUBLE;
+               cmd = SCPI_CMD_GET_MEAS_CURRENT;
+               break;
+       case SR_CONF_OUTPUT_CURRENT_MAX:
+               gvtype = G_VARIANT_TYPE_DOUBLE;
+               cmd = SCPI_CMD_GET_CURRENT_MAX;
+               break;
+       case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
+               gvtype = G_VARIANT_TYPE_BOOLEAN;
+               cmd = SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_ENABLED;
+               break;
+       case SR_CONF_OVER_VOLTAGE_PROTECTION_ACTIVE:
+               gvtype = G_VARIANT_TYPE_BOOLEAN;
+               cmd = SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_ACTIVE;
+               break;
+       case SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD:
+               gvtype = G_VARIANT_TYPE_DOUBLE;
+               cmd = SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_THRESHOLD;
+               break;
+       case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
+               gvtype = G_VARIANT_TYPE_BOOLEAN;
+               cmd = SCPI_CMD_GET_OVER_CURRENT_PROTECTION_ENABLED;
+               break;
+       case SR_CONF_OVER_CURRENT_PROTECTION_ACTIVE:
+               gvtype = G_VARIANT_TYPE_BOOLEAN;
+               cmd = SCPI_CMD_GET_OVER_CURRENT_PROTECTION_ACTIVE;
+               break;
+       case SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD:
+               gvtype = G_VARIANT_TYPE_DOUBLE;
+               cmd = SCPI_CMD_GET_OVER_CURRENT_PROTECTION_THRESHOLD;
+               break;
+       case SR_CONF_OVER_TEMPERATURE_PROTECTION:
+               gvtype = G_VARIANT_TYPE_BOOLEAN;
+               cmd = SCPI_CMD_GET_OVER_TEMPERATURE_PROTECTION;
+               break;
+       }
+       if (gvtype) {
+               if (cg)
+                       ret = scpi_cmd_resp(sdi, data, gvtype, cmd, pch->hwname);
+               else
+                       ret = scpi_cmd_resp(sdi, data, gvtype, cmd);
+       } else if (cg) {
                switch (key) {
                case SR_CONF_OUTPUT_REGULATION:
                        ret = SR_ERR;
-                       if (scpi_cmd(sdi, SCPI_CMD_GET_OUTPUT_REGULATION, ch->name) == SR_OK) {
+                       if (scpi_cmd(sdi, SCPI_CMD_GET_OUTPUT_REGULATION, pch->hwname) == SR_OK) {
                                if (sr_scpi_get_string(scpi, NULL, &s) == SR_OK) {
                                        if (strcmp(s, "CC") && strcmp(s, "CV") && strcmp(s, "UR")) {
                                                sr_dbg("Unknown response to SCPI_CMD_GET_OUTPUT_REGULATION: %s", s);
@@ -225,194 +304,89 @@ static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
                                }
                        }
                        break;
-               case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
-                       ret = SR_ERR;
-                       if (scpi_cmd(sdi, SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_ENABLED,
-                                       ch->name) == SR_OK) {
-                               if (sr_scpi_get_string(scpi, NULL, &s) == SR_OK) {
-                                       *data = g_variant_new_boolean(!strcmp(s, "ON"));
-                                       ret = SR_OK;
-                               }
-                       }
-                       break;
-               case SR_CONF_OVER_VOLTAGE_PROTECTION_ACTIVE:
-                       ret = SR_ERR;
-                       if (scpi_cmd(sdi, SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_ACTIVE,
-                                       ch->name) == SR_OK) {
-                               if (sr_scpi_get_string(scpi, NULL, &s) == SR_OK) {
-                                       *data = g_variant_new_boolean(!strcmp(s, "YES"));
-                                       ret = SR_OK;
-                               }
-                       }
-                       break;
-               case SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD:
-                       ret = SR_ERR;
-                       if (scpi_cmd(sdi, SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_THRESHOLD,
-                                       ch->name) == SR_OK) {
-                               if (sr_scpi_get_double(scpi, NULL, &d) == SR_OK) {
-                                       *data = g_variant_new_double(d);
-                                       ret = SR_OK;
-                               }
-                       }
-                       break;
-               case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
-                       ret = SR_ERR;
-                       if (scpi_cmd(sdi, SCPI_CMD_GET_OVER_CURRENT_PROTECTION_ENABLED,
-                                       ch->name) == SR_OK) {
-                               if (sr_scpi_get_string(scpi, NULL, &s) == SR_OK) {
-                                       *data = g_variant_new_boolean(!strcmp(s, "ON"));
-                                       ret = SR_OK;
-                               }
-                       }
-                       break;
-               case SR_CONF_OVER_CURRENT_PROTECTION_ACTIVE:
-                       ret = SR_ERR;
-                       if (scpi_cmd(sdi, SCPI_CMD_GET_OVER_CURRENT_PROTECTION_ACTIVE,
-                                       ch->name) == SR_OK) {
-                               if (sr_scpi_get_string(scpi, NULL, &s) == SR_OK) {
-                                       *data = g_variant_new_boolean(!strcmp(s, "YES"));
-                                       ret = SR_OK;
-                               }
-                       }
-                       break;
-               case SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD:
-                       ret = SR_ERR;
-                       if (scpi_cmd(sdi, SCPI_CMD_GET_OVER_CURRENT_PROTECTION_THRESHOLD,
-                                       ch->name) == SR_OK) {
-                               if (sr_scpi_get_double(scpi, NULL, &d) == SR_OK) {
-                                       *data = g_variant_new_double(d);
-                                       ret = SR_OK;
-                               }
-                       }
-                       break;
-               case SR_CONF_OUTPUT_VOLTAGE:
-                       ret = SR_ERR;
-                       if (scpi_cmd(sdi, SCPI_CMD_GET_MEAS_VOLTAGE, ch->name) == SR_OK) {
-                               if (sr_scpi_get_double(scpi, NULL, &d) == SR_OK) {
-                                       *data = g_variant_new_double(d);
-                                       ret = SR_OK;
-                               }
-                       }
-                       break;
-               case SR_CONF_OUTPUT_VOLTAGE_MAX:
-                       ret = SR_ERR;
-                       if (scpi_cmd(sdi, SCPI_CMD_GET_VOLTAGE_MAX, ch->name) == SR_OK) {
-                               if (sr_scpi_get_double(scpi, NULL, &d) == SR_OK) {
-                                       *data = g_variant_new_double(d);
-                                       ret = SR_OK;
-                               }
-                       }
-                       break;
-               case SR_CONF_OUTPUT_CURRENT:
-                       ret = SR_ERR;
-                       if (scpi_cmd(sdi, SCPI_CMD_GET_MEAS_CURRENT, ch->name) == SR_OK) {
-                               if (sr_scpi_get_double(scpi, NULL, &d) == SR_OK) {
-                                       *data = g_variant_new_double(d);
-                                       ret = SR_OK;
-                               }
-                       }
-                       break;
-               case SR_CONF_OUTPUT_CURRENT_MAX:
-                       ret = SR_ERR;
-                       if (scpi_cmd(sdi, SCPI_CMD_GET_CURRENT_MAX, ch->name) == SR_OK) {
-                               if (sr_scpi_get_double(scpi, NULL, &d) == SR_OK) {
-                                       *data = g_variant_new_double(d);
-                                       ret = SR_OK;
-                               }
-                       }
-                       break;
-               case SR_CONF_OUTPUT_ENABLED:
-                       ret = SR_ERR;
-                       if (scpi_cmd(sdi, SCPI_CMD_GET_OUTPUT_ENABLED, ch->name) == SR_OK) {
-                               if (sr_scpi_get_string(scpi, NULL, &s) == SR_OK) {
-                                       *data = g_variant_new_boolean(!strcmp(s, "ON"));
-                                       ret = SR_OK;
-                               }
-                       }
-                       break;
                default:
-                       return SR_ERR_NA;
+                       ret = SR_ERR_NA;
                }
-       }
+       } else
+               ret = SR_ERR_NA;
 
        return ret;
 }
 
-static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
+static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
                const struct sr_channel_group *cg)
 {
        struct sr_channel *ch;
+       struct pps_channel *pch;
        double d;
        int ret;
        const char *s;
 
+       if (!sdi)
+               return SR_ERR_ARG;
+
        if (sdi->status != SR_ST_ACTIVE)
                return SR_ERR_DEV_CLOSED;
 
-
        ret = SR_OK;
        if (!cg) {
                switch (key) {
                /* No channel group: global options. */
-               case SR_CONF_OVER_TEMPERATURE_PROTECTION:
+               case SR_CONF_OUTPUT_ENABLED:
                        s = g_variant_get_boolean(data) ? "ON" : "OFF";
-                       if (scpi_cmd(sdi, SCPI_CMD_SET_OVER_TEMPERATURE_PROTECTION, s) < 0)
-                               ret = SR_ERR;
+                       ret = scpi_cmd(sdi, SCPI_CMD_SET_OUTPUT_ENABLED, s);
                        break;
-               case SR_CONF_OUTPUT_CHANNEL_CONFIG:
-                       s = g_variant_get_string(data, NULL);
-                       if (scpi_cmd(sdi, SCPI_CMD_SET_OUTPUT_CHANNEL_CONFIG, s) < 0)
-                               ret = SR_ERR;
+               case SR_CONF_OUTPUT_VOLTAGE_MAX:
+                       d = g_variant_get_double(data);
+                       ret = scpi_cmd(sdi, SCPI_CMD_SET_VOLTAGE_MAX, d);
+                       break;
+               case SR_CONF_OUTPUT_CURRENT_MAX:
+                       d = g_variant_get_double(data);
+                       ret = scpi_cmd(sdi, SCPI_CMD_SET_CURRENT_MAX, d);
+                       break;
+               case SR_CONF_OVER_TEMPERATURE_PROTECTION:
+                       s = g_variant_get_boolean(data) ? "ON" : "OFF";
+                       ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_TEMPERATURE_PROTECTION, s);
                        break;
                default:
                        ret = SR_ERR_NA;
                }
        } else {
                /* Channel group specified. */
-               if (!sdi)
-                       return SR_ERR_ARG;
-               if (g_slist_length(cg->channels) > 1)
-                       return SR_ERR_NA;
                ch = cg->channels->data;
+               pch = ch->priv;
                switch (key) {
+               case SR_CONF_OUTPUT_ENABLED:
+                       s = g_variant_get_boolean(data) ? "ON" : "OFF";
+                       ret = scpi_cmd(sdi, SCPI_CMD_SET_OUTPUT_ENABLED, pch->hwname, s);
+                       break;
                case SR_CONF_OUTPUT_VOLTAGE_MAX:
                        d = g_variant_get_double(data);
-                       if (scpi_cmd(sdi, SCPI_CMD_SET_VOLTAGE_MAX, ch->name, d) < 0)
-                               ret = SR_ERR;
+                       ret = scpi_cmd(sdi, SCPI_CMD_SET_VOLTAGE_MAX, pch->hwname, d);
                        break;
                case SR_CONF_OUTPUT_CURRENT_MAX:
                        d = g_variant_get_double(data);
-                       if (scpi_cmd(sdi, SCPI_CMD_SET_CURRENT_MAX, ch->name, d) < 0)
-                               ret = SR_ERR;
-                       break;
-               case SR_CONF_OUTPUT_ENABLED:
-                       s = g_variant_get_boolean(data) ? "ON" : "OFF";
-                       if (scpi_cmd(sdi, SCPI_CMD_SET_OUTPUT_ENABLED, ch->name, s) < 0)
-                               ret = SR_ERR;
+                       ret = scpi_cmd(sdi, SCPI_CMD_SET_CURRENT_MAX, pch->hwname, d);
                        break;
                case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
                        s = g_variant_get_boolean(data) ? "ON" : "OFF";
-                       if (scpi_cmd(sdi, SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_ENABLED,
-                                       ch->name, s) < 0)
-                               ret = SR_ERR;
+                       ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_ENABLED,
+                                       pch->hwname, s);
                        break;
                case SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD:
                        d = g_variant_get_double(data);
-                       if (scpi_cmd(sdi, SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_THRESHOLD,
-                                       ch->name, d) < 0)
-                               ret = SR_ERR;
+                       ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_THRESHOLD,
+                                       pch->hwname, d);
                        break;
                case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
                        s = g_variant_get_boolean(data) ? "ON" : "OFF";
-                       if (scpi_cmd(sdi, SCPI_CMD_SET_OVER_CURRENT_PROTECTION_ENABLED,
-                                       ch->name, s) < 0)
-                               ret = SR_ERR;
+                       ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_CURRENT_PROTECTION_ENABLED,
+                                       pch->hwname, s);
                        break;
                case SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD:
                        d = g_variant_get_double(data);
-                       if (scpi_cmd(sdi, SCPI_CMD_SET_OVER_CURRENT_PROTECTION_THRESHOLD,
-                                       ch->name, d) < 0)
-                               ret = SR_ERR;
+                       ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_CURRENT_PROTECTION_THRESHOLD,
+                                       pch->hwname, d);
                        break;
                default:
                        ret = SR_ERR_NA;
@@ -422,7 +396,7 @@ static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
        return ret;
 }
 
-static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
+static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
                const struct sr_channel_group *cg)
 {
        struct dev_context *devc;
@@ -435,8 +409,8 @@ static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
 
        /* Always available, even without sdi. */
        if (key == SR_CONF_SCAN_OPTIONS) {
-               *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
-                               scanopts, ARRAY_SIZE(scanopts), sizeof(int32_t));
+               *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
+                               scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
                return SR_OK;
        }
 
@@ -449,11 +423,12 @@ static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
                /* No channel group: global options. */
                switch (key) {
                case SR_CONF_DEVICE_OPTIONS:
-                       *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
+                       *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
                                        devc->device->devopts, devc->device->num_devopts,
-                                       sizeof(int32_t));
+                                       sizeof(uint32_t));
                        break;
                case SR_CONF_OUTPUT_CHANNEL_CONFIG:
+                       /* Not used. */
                        i = 0;
                        if (devc->device->features & PPS_INDEPENDENT)
                                s[i++] = "Independent";
@@ -475,24 +450,19 @@ static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
                }
        } else {
                /* Channel group specified. */
-               if (!sdi)
-                       return SR_ERR_ARG;
                /*
                 * Per-channel-group options depending on a channel are actually
                 * done with the first channel. Channel groups in PPS can have
                 * more than one channel, but they will typically be of equal
-                * specification for use in series or parallel mode. Drop requests
-                * for groups with more than one channel just to make sure.
+                * specification for use in series or parallel mode.
                 */
-               if (g_slist_length(cg->channels) > 1)
-                       return SR_ERR_NA;
                ch = cg->channels->data;
 
                switch (key) {
                case SR_CONF_DEVICE_OPTIONS:
-                       *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
+                       *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
                                        devc->device->devopts_cg, devc->device->num_devopts_cg,
-                                       sizeof(int32_t));
+                                       sizeof(uint32_t));
                        break;
                case SR_CONF_OUTPUT_VOLTAGE_MAX:
                        ch_spec = &(devc->device->channels[ch->index]);
@@ -528,7 +498,8 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi,
        struct dev_context *devc;
        struct sr_scpi_dev_inst *scpi;
        struct sr_channel *ch;
-       int ret;
+       struct pps_channel *pch;
+       int cmd, ret;
 
        if (sdi->status != SR_ST_ACTIVE)
                return SR_ERR_DEV_CLOSED;
@@ -537,23 +508,30 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi,
        scpi = sdi->conn;
        devc->cb_data = cb_data;
 
-       if ((ret = sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 100,
+       if ((ret = sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 10,
                        scpi_pps_receive_data, (void *)sdi)) != SR_OK)
                return ret;
        std_session_send_df_header(sdi, LOG_PREFIX);
 
-       /* Prime the pipe. */
-       devc->state = STATE_VOLTAGE;
+       /* Prime the pipe with the first channel's fetch. */
        ch = sdi->channels->data;
+       pch = ch->priv;
        devc->cur_channel = ch;
-       scpi_cmd(sdi, SCPI_CMD_GET_MEAS_VOLTAGE, ch->name);
+       if (pch->mq == SR_MQ_VOLTAGE)
+               cmd = SCPI_CMD_GET_MEAS_VOLTAGE;
+       else if (pch->mq == SR_MQ_CURRENT)
+               cmd = SCPI_CMD_GET_MEAS_CURRENT;
+       else if (pch->mq == SR_MQ_POWER)
+               cmd = SCPI_CMD_GET_MEAS_POWER;
+       else
+               return SR_ERR;
+       scpi_cmd(sdi, cmd, pch->hwname);
 
        return SR_OK;
 }
 
 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 {
-       struct dev_context *devc;
        struct sr_scpi_dev_inst *scpi;
        float f;
 
@@ -562,7 +540,6 @@ static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
        if (sdi->status != SR_ST_ACTIVE)
                return SR_ERR_DEV_CLOSED;
 
-       devc = sdi->priv;
        scpi = sdi->conn;
 
        /*
@@ -573,9 +550,6 @@ static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
        sr_scpi_get_float(scpi, NULL, &f);
        sr_scpi_source_remove(sdi->session, scpi);
 
-       /* Just in case something is queued up. */
-       devc->state = STATE_STOP;
-
        return SR_OK;
 }