]> sigrok.org Git - libsigrok.git/blobdiff - src/hardware/hameg-hmo/api.c
hameg-hmo: Only update states after successful SCPI SET.
[libsigrok.git] / src / hardware / hameg-hmo / api.c
index 00d57c5ef3a8d103877b11a041a9189b9dc469ba..a7204219a736aa3427930144562e32a30d3f4d1c 100644 (file)
@@ -2,6 +2,7 @@
  * This file is part of the libsigrok project.
  *
  * Copyright (C) 2013 poljar (Damir Jelić) <poljarinho@gmail.com>
+ * Copyright (C) 2018 Guido Trentalancia <guido@trentalancia.com>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -22,8 +23,6 @@
 #include "scpi.h"
 #include "protocol.h"
 
-#define SERIALCOMM "115200/8n1/flow=1"
-
 static struct sr_dev_driver hameg_hmo_driver_info;
 
 static const char *manufacturers[] = {
@@ -31,15 +30,15 @@ static const char *manufacturers[] = {
        "Rohde&Schwarz",
 };
 
-static const uint32_t drvopts[] = {
-       SR_CONF_OSCILLOSCOPE,
-};
-
 static const uint32_t scanopts[] = {
        SR_CONF_CONN,
        SR_CONF_SERIALCOMM,
 };
 
+static const uint32_t drvopts[] = {
+       SR_CONF_OSCILLOSCOPE,
+};
+
 enum {
        CG_INVALID = -1,
        CG_NONE,
@@ -47,18 +46,7 @@ enum {
        CG_DIGITAL,
 };
 
-static int check_manufacturer(const char *manufacturer)
-{
-       unsigned int i;
-
-       for (i = 0; i < ARRAY_SIZE(manufacturers); i++)
-               if (!strcmp(manufacturer, manufacturers[i]))
-                       return SR_OK;
-
-       return SR_ERR;
-}
-
-static struct sr_dev_inst *hmo_probe_serial_device(struct sr_scpi_dev_inst *scpi)
+static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)
 {
        struct sr_dev_inst *sdi;
        struct dev_context *devc;
@@ -73,7 +61,7 @@ static struct sr_dev_inst *hmo_probe_serial_device(struct sr_scpi_dev_inst *scpi
                goto fail;
        }
 
-       if (check_manufacturer(hw_info->manufacturer) != SR_OK)
+       if (std_str_idx_s(hw_info->manufacturer, ARRAY_AND_SIZE(manufacturers)) < 0)
                goto fail;
 
        sdi = g_malloc0(sizeof(struct sr_dev_inst));
@@ -98,10 +86,8 @@ static struct sr_dev_inst *hmo_probe_serial_device(struct sr_scpi_dev_inst *scpi
        return sdi;
 
 fail:
-       if (hw_info)
-               sr_scpi_hw_info_free(hw_info);
-       if (sdi)
-               sr_dev_inst_free(sdi);
+       sr_scpi_hw_info_free(hw_info);
+       sr_dev_inst_free(sdi);
        g_free(devc);
 
        return NULL;
@@ -109,57 +95,40 @@ fail:
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)
 {
-       return sr_scpi_scan(di->context, options, hmo_probe_serial_device);
+       return sr_scpi_scan(di->context, options, probe_device);
 }
 
-static void clear_helper(void *priv)
+static void clear_helper(struct dev_context *devc)
 {
-       struct dev_context *devc;
-
-       devc = priv;
-
        hmo_scope_state_free(devc->model_state);
-
        g_free(devc->analog_groups);
        g_free(devc->digital_groups);
-
-       g_free(devc);
 }
 
 static int dev_clear(const struct sr_dev_driver *di)
 {
-       return std_dev_clear(di, clear_helper);
+       return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
 }
 
 static int dev_open(struct sr_dev_inst *sdi)
 {
-       if (sdi->status != SR_ST_ACTIVE && sr_scpi_open(sdi->conn) != SR_OK)
+       if (sr_scpi_open(sdi->conn) != SR_OK)
                return SR_ERR;
 
        if (hmo_scope_state_get(sdi) != SR_OK)
                return SR_ERR;
 
-       sdi->status = SR_ST_ACTIVE;
-
        return SR_OK;
 }
 
 static int dev_close(struct sr_dev_inst *sdi)
 {
-       if (sdi->status == SR_ST_INACTIVE)
-               return SR_OK;
-
-       sr_scpi_close(sdi->conn);
-
-       sdi->status = SR_ST_INACTIVE;
-
-       return SR_OK;
+       return sr_scpi_close(sdi->conn);
 }
 
 static int check_channel_group(struct dev_context *devc,
                             const struct sr_channel_group *cg)
 {
-       unsigned int i;
        const struct scope_config *model;
 
        model = devc->model_config;
@@ -167,24 +136,21 @@ static int check_channel_group(struct dev_context *devc,
        if (!cg)
                return CG_NONE;
 
-       for (i = 0; i < model->analog_channels; i++)
-               if (cg == devc->analog_groups[i])
-                       return CG_ANALOG;
+       if (std_cg_idx(cg, devc->analog_groups, model->analog_channels) >= 0)
+               return CG_ANALOG;
 
-       for (i = 0; i < model->digital_pods; i++)
-               if (cg == devc->digital_groups[i])
-                       return CG_DIGITAL;
+       if (std_cg_idx(cg, devc->digital_groups, model->digital_pods) >= 0)
+               return CG_DIGITAL;
 
        sr_err("Invalid channel group specified.");
 
        return CG_INVALID;
 }
 
-static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
-                     const struct sr_channel_group *cg)
+static int config_get(uint32_t key, GVariant **data,
+       const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 {
-       int ret, cg_type;
-       unsigned int i;
+       int cg_type, idx;
        struct dev_context *devc;
        const struct scope_config *model;
        struct scope_state *state;
@@ -197,127 +163,101 @@ static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *s
        if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
                return SR_ERR;
 
-       ret = SR_ERR_NA;
        model = devc->model_config;
        state = devc->model_state;
 
        switch (key) {
        case SR_CONF_NUM_HDIV:
                *data = g_variant_new_int32(model->num_xdivs);
-               ret = SR_OK;
                break;
        case SR_CONF_TIMEBASE:
                *data = g_variant_new("(tt)", (*model->timebases)[state->timebase][0],
                                      (*model->timebases)[state->timebase][1]);
-               ret = SR_OK;
                break;
        case SR_CONF_NUM_VDIV:
-               if (cg_type == CG_NONE) {
-                       sr_err("No channel group specified.");
+               if (!cg)
                        return SR_ERR_CHANNEL_GROUP;
-               } else if (cg_type == CG_ANALOG) {
-                       for (i = 0; i < model->analog_channels; i++) {
-                               if (cg != devc->analog_groups[i])
-                                       continue;
-                               *data = g_variant_new_int32(model->num_ydivs);
-                               ret = SR_OK;
-                               break;
-                       }
-
-               } else {
-                       ret = SR_ERR_NA;
-               }
+               if (cg_type != CG_ANALOG)
+                       return SR_ERR_NA;
+               if (std_cg_idx(cg, devc->analog_groups, model->analog_channels) < 0)
+                       return SR_ERR_ARG;
+               *data = g_variant_new_int32(model->num_ydivs);
                break;
        case SR_CONF_VDIV:
-               if (cg_type == CG_NONE) {
-                       sr_err("No channel group specified.");
+               if (!cg)
                        return SR_ERR_CHANNEL_GROUP;
-               } else if (cg_type == CG_ANALOG) {
-                       for (i = 0; i < model->analog_channels; i++) {
-                               if (cg != devc->analog_groups[i])
-                                       continue;
-                               *data = g_variant_new("(tt)",
-                                                     (*model->vdivs)[state->analog_channels[i].vdiv][0],
-                                                     (*model->vdivs)[state->analog_channels[i].vdiv][1]);
-                               ret = SR_OK;
-                               break;
-                       }
-
-               } else {
-                       ret = SR_ERR_NA;
-               }
+               if (cg_type != CG_ANALOG)
+                       return SR_ERR_NA;
+               if ((idx = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
+                       return SR_ERR_ARG;
+               *data = g_variant_new("(tt)",
+                                     (*model->vdivs)[state->analog_channels[idx].vdiv][0],
+                                     (*model->vdivs)[state->analog_channels[idx].vdiv][1]);
                break;
        case SR_CONF_TRIGGER_SOURCE:
                *data = g_variant_new_string((*model->trigger_sources)[state->trigger_source]);
-               ret = SR_OK;
                break;
        case SR_CONF_TRIGGER_SLOPE:
                *data = g_variant_new_string((*model->trigger_slopes)[state->trigger_slope]);
-               ret = SR_OK;
+               break;
+       case SR_CONF_TRIGGER_PATTERN:
+               *data = g_variant_new_string(state->trigger_pattern);
                break;
        case SR_CONF_HORIZ_TRIGGERPOS:
                *data = g_variant_new_double(state->horiz_triggerpos);
-               ret = SR_OK;
                break;
        case SR_CONF_COUPLING:
-               if (cg_type == CG_NONE) {
-                       sr_err("No channel group specified.");
+               if (!cg)
                        return SR_ERR_CHANNEL_GROUP;
-               } else if (cg_type == CG_ANALOG) {
-                       for (i = 0; i < model->analog_channels; i++) {
-                               if (cg != devc->analog_groups[i])
-                                       continue;
-                               *data = g_variant_new_string((*model->coupling_options)[state->analog_channels[i].coupling]);
-                               ret = SR_OK;
-                               break;
-                       }
-
-               } else {
-                       ret = SR_ERR_NA;
-               }
+               if (cg_type != CG_ANALOG)
+                       return SR_ERR_NA;
+               if ((idx = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
+                       return SR_ERR_ARG;
+               *data = g_variant_new_string((*model->coupling_options)[state->analog_channels[idx].coupling]);
                break;
        case SR_CONF_SAMPLERATE:
                *data = g_variant_new_uint64(state->sample_rate);
-               ret = SR_OK;
+               break;
+       case SR_CONF_LOGIC_THRESHOLD:
+               if (!cg)
+                       return SR_ERR_CHANNEL_GROUP;
+               if (cg_type != CG_DIGITAL)
+                       return SR_ERR_NA;
+               if (!model)
+                       return SR_ERR_ARG;
+               if ((idx = std_cg_idx(cg, devc->digital_groups, model->digital_pods)) < 0)
+                       return SR_ERR_ARG;
+               *data = g_variant_new_string((*model->logic_threshold)[state->digital_pods[idx].threshold]);
+               break;
+       case SR_CONF_LOGIC_THRESHOLD_CUSTOM:
+               if (!cg)
+                       return SR_ERR_CHANNEL_GROUP;
+               if (cg_type != CG_DIGITAL)
+                       return SR_ERR_NA;
+               if (!model)
+                       return SR_ERR_ARG;
+               if ((idx = std_cg_idx(cg, devc->digital_groups, model->digital_pods)) < 0)
+                       return SR_ERR_ARG;
+               if (strcmp("USER2", (*model->logic_threshold)[state->digital_pods[idx].threshold]))
+                       return SR_ERR_NA;
+               *data = g_variant_new_double(state->digital_pods[idx].user_threshold);
                break;
        default:
-               ret = SR_ERR_NA;
-       }
-
-       return ret;
-}
-
-static GVariant *build_tuples(const uint64_t (*array)[][2], unsigned int n)
-{
-       unsigned int i;
-       GVariant *rational[2];
-       GVariantBuilder gvb;
-
-       g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
-
-       for (i = 0; i < n; i++) {
-               rational[0] = g_variant_new_uint64((*array)[i][0]);
-               rational[1] = g_variant_new_uint64((*array)[i][1]);
-
-               /* FIXME: Valgrind reports a memory leak here. */
-               g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2));
+               return SR_ERR_NA;
        }
 
-       return g_variant_builder_end(&gvb);
+       return SR_OK;
 }
 
-static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
-                     const struct sr_channel_group *cg)
+static int config_set(uint32_t key, GVariant *data,
+       const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 {
-       int ret, cg_type;
-       unsigned int i, j;
-       char command[MAX_COMMAND_SIZE], float_str[30];
+       int ret, cg_type, idx, j;
+       char command[MAX_COMMAND_SIZE], float_str[30], *tmp_str;
        struct dev_context *devc;
        const struct scope_config *model;
        struct scope_state *state;
-       const char *tmp;
-       uint64_t p, q;
-       double tmp_d;
+       double tmp_d, tmp_d2;
        gboolean update_sample_rate;
 
        if (!sdi)
@@ -332,156 +272,182 @@ static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sd
        state = devc->model_state;
        update_sample_rate = FALSE;
 
-       ret = SR_ERR_NA;
-
        switch (key) {
+       case SR_CONF_LIMIT_SAMPLES:
+               devc->samples_limit = g_variant_get_uint64(data);
+               ret = SR_OK;
+               break;
        case SR_CONF_LIMIT_FRAMES:
                devc->frame_limit = g_variant_get_uint64(data);
                ret = SR_OK;
                break;
        case SR_CONF_TRIGGER_SOURCE:
-               tmp = g_variant_get_string(data, NULL);
-               for (i = 0; (*model->trigger_sources)[i]; i++) {
-                       if (g_strcmp0(tmp, (*model->trigger_sources)[i]) != 0)
-                               continue;
-                       state->trigger_source = i;
-                       g_snprintf(command, sizeof(command),
-                                  (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SOURCE],
-                                  (*model->trigger_sources)[i]);
-
-                       ret = sr_scpi_send(sdi->conn, command);
-                       break;
-               }
+               if ((idx = std_str_idx(data, *model->trigger_sources, model->num_trigger_sources)) < 0)
+                       return SR_ERR_ARG;
+               g_snprintf(command, sizeof(command),
+                          (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SOURCE],
+                          (*model->trigger_sources)[idx]);
+               if (sr_scpi_send(sdi->conn, command) != SR_OK ||
+                   sr_scpi_get_opc(sdi->conn) != SR_OK)
+                       return SR_ERR;
+               state->trigger_source = idx;
+               ret = SR_OK;
                break;
        case SR_CONF_VDIV:
-               if (cg_type == CG_NONE) {
-                       sr_err("No channel group specified.");
+               if (!cg)
                        return SR_ERR_CHANNEL_GROUP;
-               }
-
-               g_variant_get(data, "(tt)", &p, &q);
-
-               for (i = 0; i < model->num_vdivs; i++) {
-                       if (p != (*model->vdivs)[i][0] ||
-                           q != (*model->vdivs)[i][1])
-                               continue;
-                       for (j = 1; j <= model->analog_channels; j++) {
-                               if (cg != devc->analog_groups[j - 1])
-                                       continue;
-                               state->analog_channels[j - 1].vdiv = i;
-                               g_ascii_formatd(float_str, sizeof(float_str), "%E", (float) p / q);
-                               g_snprintf(command, sizeof(command),
-                                          (*model->scpi_dialect)[SCPI_CMD_SET_VERTICAL_DIV],
-                                          j, float_str);
-
-                               if (sr_scpi_send(sdi->conn, command) != SR_OK ||
-                                   sr_scpi_get_opc(sdi->conn) != SR_OK)
-                                       return SR_ERR;
-
-                               break;
-                       }
-
-                       ret = SR_OK;
-                       break;
-               }
+               if ((idx = std_u64_tuple_idx(data, *model->vdivs, model->num_vdivs)) < 0)
+                       return SR_ERR_ARG;
+               if ((j = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
+                       return SR_ERR_ARG;
+               g_ascii_formatd(float_str, sizeof(float_str), "%E",
+                       (float) (*model->vdivs)[idx][0] / (*model->vdivs)[idx][1]);
+               g_snprintf(command, sizeof(command),
+                          (*model->scpi_dialect)[SCPI_CMD_SET_VERTICAL_DIV],
+                          j + 1, float_str);
+               if (sr_scpi_send(sdi->conn, command) != SR_OK ||
+                   sr_scpi_get_opc(sdi->conn) != SR_OK)
+                       return SR_ERR;
+               state->analog_channels[j].vdiv = idx;
+               ret = SR_OK;
                break;
        case SR_CONF_TIMEBASE:
-               g_variant_get(data, "(tt)", &p, &q);
-
-               for (i = 0; i < model->num_timebases; i++) {
-                       if (p != (*model->timebases)[i][0] ||
-                           q != (*model->timebases)[i][1])
-                               continue;
-                       state->timebase = i;
-                       g_ascii_formatd(float_str, sizeof(float_str), "%E", (float) p / q);
-                       g_snprintf(command, sizeof(command),
-                                  (*model->scpi_dialect)[SCPI_CMD_SET_TIMEBASE],
-                                  float_str);
-
-                       ret = sr_scpi_send(sdi->conn, command);
-                       update_sample_rate = TRUE;
-                       break;
-               }
+               if ((idx = std_u64_tuple_idx(data, *model->timebases, model->num_timebases)) < 0)
+                       return SR_ERR_ARG;
+               g_ascii_formatd(float_str, sizeof(float_str), "%E",
+                       (float) (*model->timebases)[idx][0] / (*model->timebases)[idx][1]);
+               g_snprintf(command, sizeof(command),
+                          (*model->scpi_dialect)[SCPI_CMD_SET_TIMEBASE],
+                          float_str);
+               if (sr_scpi_send(sdi->conn, command) != SR_OK ||
+                   sr_scpi_get_opc(sdi->conn) != SR_OK)
+                       return SR_ERR;
+               state->timebase = idx;
+               ret = SR_OK;
+               update_sample_rate = TRUE;
                break;
        case SR_CONF_HORIZ_TRIGGERPOS:
                tmp_d = g_variant_get_double(data);
-
                if (tmp_d < 0.0 || tmp_d > 1.0)
                        return SR_ERR;
-
-               state->horiz_triggerpos = tmp_d;
-               tmp_d = -(tmp_d - 0.5) *
+               tmp_d2 = -(tmp_d - 0.5) *
                        ((double) (*model->timebases)[state->timebase][0] /
                        (*model->timebases)[state->timebase][1])
                         * model->num_xdivs;
-
-               g_ascii_formatd(float_str, sizeof(float_str), "%E", tmp_d);
+               g_ascii_formatd(float_str, sizeof(float_str), "%E", tmp_d2);
                g_snprintf(command, sizeof(command),
                           (*model->scpi_dialect)[SCPI_CMD_SET_HORIZ_TRIGGERPOS],
                           float_str);
-
-               ret = sr_scpi_send(sdi->conn, command);
+               if (sr_scpi_send(sdi->conn, command) != SR_OK ||
+                   sr_scpi_get_opc(sdi->conn) != SR_OK)
+                       return SR_ERR;
+               state->horiz_triggerpos = tmp_d;
+               ret = SR_OK;
                break;
        case SR_CONF_TRIGGER_SLOPE:
-               tmp = g_variant_get_string(data, NULL);
-               for (i = 0; (*model->trigger_slopes)[i]; i++) {
-                       if (g_strcmp0(tmp, (*model->trigger_slopes)[i]) != 0)
-                               continue;
-                       state->trigger_slope = i;
-                       g_snprintf(command, sizeof(command),
-                                  (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SLOPE],
-                                  (*model->trigger_slopes)[i]);
-
-                       ret = sr_scpi_send(sdi->conn, command);
-                       break;
-               }
+               if ((idx = std_str_idx(data, *model->trigger_slopes, model->num_trigger_slopes)) < 0)
+                       return SR_ERR_ARG;
+               g_snprintf(command, sizeof(command),
+                          (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SLOPE],
+                          (*model->trigger_slopes)[idx]);
+               if (sr_scpi_send(sdi->conn, command) != SR_OK ||
+                   sr_scpi_get_opc(sdi->conn) != SR_OK)
+                       return SR_ERR;
+               state->trigger_slope = idx;
+               ret = SR_OK;
+               break;
+       case SR_CONF_TRIGGER_PATTERN:
+               tmp_str = (char *)g_variant_get_string(data, 0);
+               idx = strlen(tmp_str);
+               if (idx == 0 || idx > model->analog_channels + model->digital_channels)
+                       return SR_ERR_ARG;
+               g_snprintf(command, sizeof(command),
+                          (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_PATTERN],
+                          tmp_str);
+               if (sr_scpi_send(sdi->conn, command) != SR_OK ||
+                   sr_scpi_get_opc(sdi->conn) != SR_OK)
+                       return SR_ERR;
+               g_free(state->trigger_pattern);
+               state->trigger_pattern = g_strdup(tmp_str);
+               ret = SR_OK;
                break;
        case SR_CONF_COUPLING:
-               if (cg_type == CG_NONE) {
-                       sr_err("No channel group specified.");
+               if (!cg)
                        return SR_ERR_CHANNEL_GROUP;
-               }
-
-               tmp = g_variant_get_string(data, NULL);
-
-               for (i = 0; (*model->coupling_options)[i]; i++) {
-                       if (strcmp(tmp, (*model->coupling_options)[i]) != 0)
-                               continue;
-                       for (j = 1; j <= model->analog_channels; j++) {
-                               if (cg != devc->analog_groups[j - 1])
-                                       continue;
-                               state->analog_channels[j-1].coupling = i;
-
-                               g_snprintf(command, sizeof(command),
-                                          (*model->scpi_dialect)[SCPI_CMD_SET_COUPLING],
-                                          j, tmp);
-
-                               if (sr_scpi_send(sdi->conn, command) != SR_OK ||
-                                   sr_scpi_get_opc(sdi->conn) != SR_OK)
-                                       return SR_ERR;
-                               break;
-                       }
-
-                       ret = SR_OK;
-                       break;
-               }
+               if ((idx = std_str_idx(data, *model->coupling_options, model->num_coupling_options)) < 0)
+                       return SR_ERR_ARG;
+               if ((j = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
+                       return SR_ERR_ARG;
+               g_snprintf(command, sizeof(command),
+                          (*model->scpi_dialect)[SCPI_CMD_SET_COUPLING],
+                          j + 1, (*model->coupling_options)[idx]);
+               if (sr_scpi_send(sdi->conn, command) != SR_OK ||
+                   sr_scpi_get_opc(sdi->conn) != SR_OK)
+                       return SR_ERR;
+               state->analog_channels[j].coupling = idx;
+               ret = SR_OK;
+               break;
+       case SR_CONF_LOGIC_THRESHOLD:
+               if (!cg)
+                       return SR_ERR_CHANNEL_GROUP;
+               if (cg_type != CG_DIGITAL)
+                       return SR_ERR_NA;
+               if (!model)
+                       return SR_ERR_ARG;
+               if ((idx = std_str_idx(data, *model->logic_threshold, model->num_logic_threshold)) < 0)
+                       return SR_ERR_ARG;
+               if ((j = std_cg_idx(cg, devc->digital_groups, model->digital_pods)) < 0)
+                       return SR_ERR_ARG;
+               g_snprintf(command, sizeof(command),
+                          (*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_THRESHOLD],
+                          j + 1, (*model->logic_threshold)[idx]);
+               if (sr_scpi_send(sdi->conn, command) != SR_OK ||
+                   sr_scpi_get_opc(sdi->conn) != SR_OK)
+                       return SR_ERR;
+               state->digital_pods[j].threshold = idx;
+               ret = SR_OK;
+               break;
+       case SR_CONF_LOGIC_THRESHOLD_CUSTOM:
+               if (!cg)
+                       return SR_ERR_CHANNEL_GROUP;
+               if (cg_type != CG_DIGITAL)
+                       return SR_ERR_NA;
+               if (!model)
+                       return SR_ERR_ARG;
+               if ((j = std_cg_idx(cg, devc->digital_groups, model->digital_pods)) < 0)
+                       return SR_ERR_ARG;
+               tmp_d = g_variant_get_double(data);
+               if (tmp_d < -2.0 || tmp_d > 8.0)
+                       return SR_ERR;
+               g_ascii_formatd(float_str, sizeof(float_str), "%E", tmp_d);
+               g_snprintf(command, sizeof(command),
+                          (*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_USER_THRESHOLD],
+                          j + 1, 2, float_str); // USER2 for custom logic_threshold setting
+               if (sr_scpi_send(sdi->conn, command) != SR_OK ||
+                   sr_scpi_get_opc(sdi->conn) != SR_OK)
+                       return SR_ERR;
+               g_snprintf(command, sizeof(command),
+                          (*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_THRESHOLD],
+                          j + 1, "USER2");
+               if (sr_scpi_send(sdi->conn, command) != SR_OK ||
+                   sr_scpi_get_opc(sdi->conn) != SR_OK)
+                       return SR_ERR;
+               state->digital_pods[j].user_threshold = tmp_d;
+               ret = SR_OK;
                break;
        default:
                ret = SR_ERR_NA;
                break;
        }
 
-       if (ret == SR_OK)
-               ret = sr_scpi_get_opc(sdi->conn);
-
        if (ret == SR_OK && update_sample_rate)
                ret = hmo_update_sample_rate(sdi);
 
        return ret;
 }
 
-static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
-                      const struct sr_channel_group *cg)
+static int config_list(uint32_t key, GVariant **data,
+       const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 {
        int cg_type = CG_NONE;
        struct dev_context *devc = NULL;
@@ -497,53 +463,57 @@ static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *
 
        switch (key) {
        case SR_CONF_SCAN_OPTIONS:
-               *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
-                               scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
+               *data = std_gvar_array_u32(ARRAY_AND_SIZE(scanopts));
                break;
        case SR_CONF_DEVICE_OPTIONS:
-               if (cg_type == CG_NONE) {
+               if (!cg) {
                        if (model)
-                               *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
-                                       model->devopts, model->num_devopts, sizeof(uint32_t));
+                               *data = std_gvar_array_u32(*model->devopts, model->num_devopts);
                        else
-                               *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
-                                       drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
+                               *data = std_gvar_array_u32(ARRAY_AND_SIZE(drvopts));
                } else if (cg_type == CG_ANALOG) {
-                       *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
-                               model->analog_devopts, model->num_analog_devopts,
-                               sizeof(uint32_t));
+                       *data = std_gvar_array_u32(*model->devopts_cg_analog, model->num_devopts_cg_analog);
+               } else if (cg_type == CG_DIGITAL) {
+                       *data = std_gvar_array_u32(*model->devopts_cg_digital, model->num_devopts_cg_digital);
                } else {
-                       *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
-                               NULL, 0, sizeof(uint32_t));
+                       *data = std_gvar_array_u32(NULL, 0);
                }
                break;
        case SR_CONF_COUPLING:
-               if (cg_type == CG_NONE)
+               if (!cg)
                        return SR_ERR_CHANNEL_GROUP;
-               *data = g_variant_new_strv(*model->coupling_options,
-                          g_strv_length((char **)*model->coupling_options));
+               if (!model)
+                       return SR_ERR_ARG;
+               *data = g_variant_new_strv(*model->coupling_options, model->num_coupling_options);
                break;
        case SR_CONF_TRIGGER_SOURCE:
                if (!model)
                        return SR_ERR_ARG;
-               *data = g_variant_new_strv(*model->trigger_sources,
-                          g_strv_length((char **)*model->trigger_sources));
+               *data = g_variant_new_strv(*model->trigger_sources, model->num_trigger_sources);
                break;
        case SR_CONF_TRIGGER_SLOPE:
                if (!model)
                        return SR_ERR_ARG;
-               *data = g_variant_new_strv(*model->trigger_slopes,
-                          g_strv_length((char **)*model->trigger_slopes));
+               *data = g_variant_new_strv(*model->trigger_slopes, model->num_trigger_slopes);
                break;
        case SR_CONF_TIMEBASE:
                if (!model)
                        return SR_ERR_ARG;
-               *data = build_tuples(model->timebases, model->num_timebases);
+               *data = std_gvar_tuple_array(*model->timebases, model->num_timebases);
                break;
        case SR_CONF_VDIV:
-               if (cg_type == CG_NONE)
+               if (!cg)
                        return SR_ERR_CHANNEL_GROUP;
-               *data = build_tuples(model->vdivs, model->num_vdivs);
+               if (!model)
+                       return SR_ERR_ARG;
+               *data = std_gvar_tuple_array(*model->vdivs, model->num_vdivs);
+               break;
+       case SR_CONF_LOGIC_THRESHOLD:
+               if (!cg)
+                       return SR_ERR_CHANNEL_GROUP;
+               if (!model)
+                       return SR_ERR_ARG;
+               *data = g_variant_new_strv(*model->logic_threshold, model->num_logic_threshold);
                break;
        default:
                return SR_ERR_NA;
@@ -592,34 +562,50 @@ static int hmo_check_channels(GSList *channels)
 {
        GSList *l;
        struct sr_channel *ch;
-       gboolean enabled_pod1, enabled_pod2, enabled_chan3, enabled_chan4;
+       gboolean enabled_chan[MAX_ANALOG_CHANNEL_COUNT];
+       gboolean enabled_pod[MAX_DIGITAL_GROUP_COUNT];
+       size_t idx;
 
-       enabled_pod1 = enabled_pod2 = enabled_chan3 = enabled_chan4 = FALSE;
+       /* Preset "not enabled" for all channels / pods. */
+       for (idx = 0; idx < ARRAY_SIZE(enabled_chan); idx++)
+               enabled_chan[idx] = FALSE;
+       for (idx = 0; idx < ARRAY_SIZE(enabled_pod); idx++)
+               enabled_pod[idx] = FALSE;
 
+       /*
+        * Determine which channels / pods are required for the caller's
+        * specified configuration.
+        */
        for (l = channels; l; l = l->next) {
                ch = l->data;
                switch (ch->type) {
                case SR_CHANNEL_ANALOG:
-                       if (ch->index == 2)
-                               enabled_chan3 = TRUE;
-                       else if (ch->index == 3)
-                               enabled_chan4 = TRUE;
+                       idx = ch->index;
+                       if (idx < ARRAY_SIZE(enabled_chan))
+                               enabled_chan[idx] = TRUE;
                        break;
                case SR_CHANNEL_LOGIC:
-                       if (ch->index < 8)
-                               enabled_pod1 = TRUE;
-                       else
-                               enabled_pod2 = TRUE;
+                       idx = ch->index / 8;
+                       if (idx < ARRAY_SIZE(enabled_pod))
+                               enabled_pod[idx] = TRUE;
                        break;
                default:
                        return SR_ERR;
                }
        }
 
-       if ((enabled_pod1 && enabled_chan3) ||
-           (enabled_pod2 && enabled_chan4))
+       /*
+        * Check for resource conflicts. Some channels can be either
+        * analog or digital, but never both at the same time.
+        *
+        * Note that the constraints might depend on the specific model.
+        * These tests might need some adjustment when support for more
+        * models gets added to the driver.
+        */
+       if (enabled_pod[0] && enabled_chan[2])
+               return SR_ERR;
+       if (enabled_pod[1] && enabled_chan[3])
                return SR_ERR;
-
        return SR_OK;
 }
 
@@ -634,6 +620,7 @@ static int hmo_setup_channels(const struct sr_dev_inst *sdi)
        struct sr_channel *ch;
        struct dev_context *devc;
        struct sr_scpi_dev_inst *scpi;
+       int ret;
 
        devc = sdi->priv;
        scpi = sdi->conn;
@@ -653,8 +640,10 @@ static int hmo_setup_channels(const struct sr_dev_inst *sdi)
                                   (*model->scpi_dialect)[SCPI_CMD_SET_ANALOG_CHAN_STATE],
                                   ch->index + 1, ch->enabled);
 
-                       if (sr_scpi_send(scpi, command) != SR_OK)
+                       if (sr_scpi_send(scpi, command) != SR_OK) {
+                               g_free(pod_enabled);
                                return SR_ERR;
+                       }
                        state->analog_channels[ch->index].state = ch->enabled;
                        setup_changed = TRUE;
                        break;
@@ -672,30 +661,37 @@ static int hmo_setup_channels(const struct sr_dev_inst *sdi)
                                   (*model->scpi_dialect)[SCPI_CMD_SET_DIG_CHAN_STATE],
                                   ch->index, ch->enabled);
 
-                       if (sr_scpi_send(scpi, command) != SR_OK)
+                       if (sr_scpi_send(scpi, command) != SR_OK) {
+                               g_free(pod_enabled);
                                return SR_ERR;
+                       }
 
                        state->digital_channels[ch->index] = ch->enabled;
                        setup_changed = TRUE;
                        break;
                default:
+                       g_free(pod_enabled);
                        return SR_ERR;
                }
        }
 
-       for (i = 1; i <= model->digital_pods; i++) {
-               if (state->digital_pods[i - 1] == pod_enabled[i - 1])
+       ret = SR_OK;
+       for (i = 0; i < model->digital_pods; i++) {
+               if (state->digital_pods[i].state == pod_enabled[i])
                        continue;
                g_snprintf(command, sizeof(command),
                           (*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_STATE],
-                          i, pod_enabled[i - 1]);
-               if (sr_scpi_send(scpi, command) != SR_OK)
-                       return SR_ERR;
-               state->digital_pods[i - 1] = pod_enabled[i - 1];
+                          i + 1, pod_enabled[i]);
+               if (sr_scpi_send(scpi, command) != SR_OK) {
+                       ret = SR_ERR;
+                       break;
+               }
+               state->digital_pods[i].state = pod_enabled[i];
                setup_changed = TRUE;
        }
-
        g_free(pod_enabled);
+       if (ret != SR_OK)
+               return ret;
 
        if (setup_changed && hmo_update_sample_rate(sdi) != SR_OK)
                return SR_ERR;
@@ -713,12 +709,12 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
        struct sr_scpi_dev_inst *scpi;
        int ret;
 
-       if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR_DEV_CLOSED;
-
        scpi = sdi->conn;
        devc = sdi->priv;
 
+       devc->num_samples = 0;
+       devc->num_frames = 0;
+
        /* Preset empty results. */
        for (group = 0; group < ARRAY_SIZE(digital_added); group++)
                digital_added[group] = FALSE;
@@ -797,11 +793,9 @@ static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 
        std_session_send_df_end(sdi);
 
-       if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR_DEV_CLOSED;
-
        devc = sdi->priv;
 
+       devc->num_samples = 0;
        devc->num_frames = 0;
        g_slist_free(devc->enabled_channels);
        devc->enabled_channels = NULL;