]> sigrok.org Git - libsigrok.git/blobdiff - hardware/hameg-hmo/api.c
Reorganize project tree.
[libsigrok.git] / hardware / hameg-hmo / api.c
diff --git a/hardware/hameg-hmo/api.c b/hardware/hameg-hmo/api.c
deleted file mode 100644 (file)
index ff045f1..0000000
+++ /dev/null
@@ -1,806 +0,0 @@
-/*
- * This file is part of the libsigrok project.
- *
- * Copyright (C) 2013 poljar (Damir Jelić) <poljarinho@gmail.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
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdlib.h>
-#include "protocol.h"
-
-#define SERIALCOMM "115200/8n1/flow=1"
-
-SR_PRIV struct sr_dev_driver hameg_hmo_driver_info;
-static struct sr_dev_driver *di = &hameg_hmo_driver_info;
-
-static const char *manufacturers[] = {
-       "HAMEG",
-};
-
-static const int32_t hwopts[] = {
-       SR_CONF_CONN,
-       SR_CONF_SERIALCOMM,
-};
-
-enum {
-       CG_INVALID = -1,
-       CG_NONE,
-       CG_ANALOG,
-       CG_DIGITAL,
-};
-
-static int init(struct sr_context *sr_ctx)
-{
-       return std_init(sr_ctx, di, LOG_PREFIX);
-}
-
-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)
-{
-       struct sr_dev_inst *sdi;
-       struct dev_context *devc;
-       struct sr_scpi_hw_info *hw_info;
-
-       sdi = NULL;
-       devc = NULL;
-       hw_info = NULL;
-
-       if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
-               sr_info("Couldn't get IDN response.");
-               goto fail;
-       }
-
-       if (check_manufacturer(hw_info->manufacturer) != SR_OK)
-               goto fail;
-
-       if (!(sdi = sr_dev_inst_new(0, SR_ST_ACTIVE,
-                                   hw_info->manufacturer, hw_info->model,
-                                   hw_info->firmware_version))) {
-               goto fail;
-       }
-       sr_scpi_hw_info_free(hw_info);
-       hw_info = NULL;
-
-       if (!(devc = g_try_malloc0(sizeof(struct dev_context))))
-               goto fail;
-
-       sdi->driver = di;
-       sdi->priv = devc;
-       sdi->inst_type = SR_INST_SCPI;
-       sdi->conn = scpi;
-
-       if (hmo_init_device(sdi) != SR_OK)
-               goto fail;
-
-       sr_scpi_close(sdi->conn);
-
-       sdi->status = SR_ST_INACTIVE;
-
-       return sdi;
-
-fail:
-       if (hw_info)
-               sr_scpi_hw_info_free(hw_info);
-       if (sdi)
-               sr_dev_inst_free(sdi);
-       if (devc)
-               g_free(devc);
-
-       return NULL;
-}
-
-static GSList *scan(GSList *options)
-{
-       return sr_scpi_scan(di->priv, options, hmo_probe_serial_device);
-}
-
-static GSList *dev_list(void)
-{
-       return ((struct drv_context *)(di->priv))->instances;
-}
-
-static void clear_helper(void *priv)
-{
-       unsigned int i;
-       struct dev_context *devc;
-       struct scope_config *model;
-
-       devc = priv;
-       model = devc->model_config;
-
-       hmo_scope_state_free(devc->model_state);
-
-       for (i = 0; i < model->analog_channels; ++i)
-               g_slist_free(devc->analog_groups[i].channels);
-
-       for (i = 0; i < model->digital_pods; ++i) {
-               g_slist_free(devc->digital_groups[i].channels);
-               g_free(devc->digital_groups[i].name);
-       }
-
-       g_free(devc->analog_groups);
-       g_free(devc->digital_groups);
-
-       g_free(devc);
-}
-
-static int dev_clear(void)
-{
-       return std_dev_clear(di, clear_helper);
-}
-
-static int dev_open(struct sr_dev_inst *sdi)
-{
-       if (sdi->status != SR_ST_ACTIVE && 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;
-}
-
-static int cleanup(void)
-{
-       dev_clear();
-
-       return SR_OK;
-}
-
-static int check_channel_group(struct dev_context *devc,
-                            const struct sr_channel_group *cg)
-{
-       unsigned int i;
-       struct scope_config *model;
-
-       model = devc->model_config;
-
-       if (!cg)
-               return CG_NONE;
-
-       for (i = 0; i < model->analog_channels; ++i)
-               if (cg == &devc->analog_groups[i])
-                       return CG_ANALOG;
-
-       for (i = 0; i < model->digital_pods; ++i)
-               if (cg == &devc->digital_groups[i])
-                       return CG_DIGITAL;
-
-       sr_err("Invalid channel group specified.");
-
-       return CG_INVALID;
-}
-
-static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
-                     const struct sr_channel_group *cg)
-{
-       int ret, cg_type;
-       unsigned int i;
-       struct dev_context *devc;
-       struct scope_config *model;
-       struct scope_state *state;
-
-       if (!sdi || !(devc = sdi->priv))
-               return SR_ERR_ARG;
-
-       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_TIMEBASE:
-               *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.");
-                       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;
-               }
-               break;
-       case SR_CONF_VDIV:
-               if (cg_type == CG_NONE) {
-                       sr_err("No channel group specified.");
-                       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;
-               }
-               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_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.");
-                       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;
-               }
-               break;
-       case SR_CONF_SAMPLERATE:
-               *data = g_variant_new_uint64(state->sample_rate);
-               ret = SR_OK;
-               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 g_variant_builder_end(&gvb);
-}
-
-static int config_set(int 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];
-       struct dev_context *devc;
-       struct scope_config *model;
-       struct scope_state *state;
-       const char *tmp;
-       uint64_t p, q;
-       double tmp_d;
-       gboolean update_sample_rate;
-
-       if (!sdi || !(devc = sdi->priv))
-               return SR_ERR_ARG;
-
-       if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
-               return SR_ERR;
-
-       model = devc->model_config;
-       state = devc->model_state;
-       update_sample_rate = FALSE;
-
-       ret = SR_ERR_NA;
-
-       switch (key) {
-       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;
-               }
-               break;
-       case SR_CONF_VDIV:
-               if (cg_type == CG_NONE) {
-                       sr_err("No channel group specified.");
-                       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;
-               }
-               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;
-               }
-               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) *
-                       ((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_snprintf(command, sizeof(command),
-                          (*model->scpi_dialect)[SCPI_CMD_SET_HORIZ_TRIGGERPOS],
-                          float_str);
-
-               ret = sr_scpi_send(sdi->conn, command);
-               break;
-       case SR_CONF_TRIGGER_SLOPE:
-               tmp = g_variant_get_string(data, NULL);
-
-               if (!tmp || !(tmp[0] == 'f' || tmp[0] == 'r'))
-                       return SR_ERR_ARG;
-
-               state->trigger_slope = (tmp[0] == 'r') ? 0 : 1;
-
-               g_snprintf(command, sizeof(command),
-                          (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SLOPE],
-                          (state->trigger_slope == 0) ? "POS" : "NEG");
-
-               ret = sr_scpi_send(sdi->conn, command);
-               break;
-       case SR_CONF_COUPLING:
-               if (cg_type == CG_NONE) {
-                       sr_err("No channel group specified.");
-                       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;
-               }
-               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(int key, GVariant **data, const struct sr_dev_inst *sdi,
-                      const struct sr_channel_group *cg)
-{
-       int cg_type;
-       struct dev_context *devc;
-       struct scope_config *model;
-
-       if (!sdi || !(devc = sdi->priv))
-               return SR_ERR_ARG;
-
-       if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
-               return SR_ERR;
-
-       model = devc->model_config;
-
-       switch (key) {
-       case SR_CONF_DEVICE_OPTIONS:
-               if (cg_type == CG_NONE) {
-                       *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
-                               model->hw_caps, model->num_hwcaps,
-                               sizeof(int32_t));
-               } else if (cg_type == CG_ANALOG) {
-                       *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
-                               model->analog_hwcaps, model->num_analog_hwcaps,
-                               sizeof(int32_t));
-               } else {
-                       *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
-                               NULL, 0, sizeof(int32_t));
-               }
-               break;
-       case SR_CONF_COUPLING:
-               if (cg_type == CG_NONE)
-                       return SR_ERR_CHANNEL_GROUP;
-               *data = g_variant_new_strv(*model->coupling_options,
-                          g_strv_length((char **)*model->coupling_options));
-               break;
-       case SR_CONF_TRIGGER_SOURCE:
-               *data = g_variant_new_strv(*model->trigger_sources,
-                          g_strv_length((char **)*model->trigger_sources));
-               break;
-       case SR_CONF_TRIGGER_SLOPE:
-               *data = g_variant_new_strv(*model->trigger_slopes,
-                          g_strv_length((char **)*model->trigger_slopes));
-               break;
-       case SR_CONF_TIMEBASE:
-               *data = build_tuples(model->timebases, model->num_timebases);
-               break;
-       case SR_CONF_VDIV:
-               if (cg_type == CG_NONE)
-                       return SR_ERR_CHANNEL_GROUP;
-               *data = build_tuples(model->vdivs, model->num_vdivs);
-               break;
-       default:
-               return SR_ERR_NA;
-       }
-
-       return SR_OK;
-}
-
-SR_PRIV int hmo_request_data(const struct sr_dev_inst *sdi)
-{
-       char command[MAX_COMMAND_SIZE];
-       struct sr_channel *ch;
-       struct dev_context *devc;
-       struct scope_config *model;
-
-       devc = sdi->priv;
-       model = devc->model_config;
-
-       ch = devc->current_channel->data;
-
-       switch (ch->type) {
-       case SR_CHANNEL_ANALOG:
-               g_snprintf(command, sizeof(command),
-                          (*model->scpi_dialect)[SCPI_CMD_GET_ANALOG_DATA],
-                          ch->index + 1);
-               break;
-       case SR_CHANNEL_LOGIC:
-               g_snprintf(command, sizeof(command),
-                          (*model->scpi_dialect)[SCPI_CMD_GET_DIG_DATA],
-                          ch->index < 8 ? 1 : 2);
-               break;
-       default:
-               sr_err("Invalid channel type.");
-               break;
-       }
-
-       return sr_scpi_send(sdi->conn, command);
-}
-
-static int hmo_check_channels(GSList *channels)
-{
-       GSList *l;
-       struct sr_channel *ch;
-       gboolean enabled_pod1, enabled_pod2, enabled_chan3, enabled_chan4;
-
-       enabled_pod1 = enabled_pod2 = enabled_chan3 = enabled_chan4 = FALSE;
-
-       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;
-                       break;
-               case SR_CHANNEL_LOGIC:
-                       if (ch->index < 8)
-                               enabled_pod1 = TRUE;
-                       else
-                               enabled_pod2 = TRUE;
-                       break;
-               default:
-                       return SR_ERR;
-               }
-       }
-
-       if ((enabled_pod1 && enabled_chan3) ||
-           (enabled_pod2 && enabled_chan4))
-               return SR_ERR;
-
-       return SR_OK;
-}
-
-static int hmo_setup_channels(const struct sr_dev_inst *sdi)
-{
-       GSList *l;
-       unsigned int i;
-       gboolean *pod_enabled, setup_changed;
-       char command[MAX_COMMAND_SIZE];
-       struct scope_state *state;
-       struct scope_config *model;
-       struct sr_channel *ch;
-       struct dev_context *devc;
-       struct sr_scpi_dev_inst *scpi;
-
-       devc = sdi->priv;
-       scpi = sdi->conn;
-       state = devc->model_state;
-       model = devc->model_config;
-       setup_changed = FALSE;
-
-       pod_enabled = g_try_malloc0(sizeof(gboolean) * model->digital_pods);
-
-       for (l = sdi->channels; l; l = l->next) {
-               ch = l->data;
-               switch (ch->type) {
-               case SR_CHANNEL_ANALOG:
-                       if (ch->enabled == state->analog_channels[ch->index].state)
-                               break;
-                       g_snprintf(command, sizeof(command),
-                                  (*model->scpi_dialect)[SCPI_CMD_SET_ANALOG_CHAN_STATE],
-                                  ch->index + 1, ch->enabled);
-
-                       if (sr_scpi_send(scpi, command) != SR_OK)
-                               return SR_ERR;
-                       state->analog_channels[ch->index].state = ch->enabled;
-                       setup_changed = TRUE;
-                       break;
-               case SR_CHANNEL_LOGIC:
-                       /*
-                        * A digital POD needs to be enabled for every group of
-                        * 8 channels.
-                        */
-                       if (ch->enabled)
-                               pod_enabled[ch->index < 8 ? 0 : 1] = TRUE;
-
-                       if (ch->enabled == state->digital_channels[ch->index])
-                               break;
-                       g_snprintf(command, sizeof(command),
-                                  (*model->scpi_dialect)[SCPI_CMD_SET_DIG_CHAN_STATE],
-                                  ch->index, ch->enabled);
-
-                       if (sr_scpi_send(scpi, command) != SR_OK)
-                               return SR_ERR;
-
-                       state->digital_channels[ch->index] = ch->enabled;
-                       setup_changed = TRUE;
-                       break;
-               default:
-                       return SR_ERR;
-               }
-       }
-
-       for (i = 1; i <= model->digital_pods; ++i) {
-               if (state->digital_pods[i - 1] == pod_enabled[i - 1])
-                       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];
-               setup_changed = TRUE;
-       }
-
-       g_free(pod_enabled);
-
-       if (setup_changed && hmo_update_sample_rate(sdi) != SR_OK)
-               return SR_ERR;
-
-       return SR_OK;
-}
-
-static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
-{
-       GSList *l;
-       gboolean digital_added;
-       struct sr_channel *ch;
-       struct dev_context *devc;
-       struct sr_scpi_dev_inst *scpi;
-
-       if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR_DEV_CLOSED;
-
-       scpi = sdi->conn;
-       devc = sdi->priv;
-       digital_added = FALSE;
-
-       for (l = sdi->channels; l; l = l->next) {
-               ch = l->data;
-               if (!ch->enabled)
-                       continue;
-               /* Only add a single digital channel. */
-               if (ch->type != SR_CHANNEL_LOGIC || !digital_added) {
-                       devc->enabled_channels = g_slist_append(
-                                       devc->enabled_channels, ch);
-                       if (ch->type == SR_CHANNEL_LOGIC)
-                               digital_added = TRUE;
-               }
-       }
-
-       if (!devc->enabled_channels)
-               return SR_ERR;
-
-       if (hmo_check_channels(devc->enabled_channels) != SR_OK) {
-               sr_err("Invalid channel configuration specified!");
-               return SR_ERR_NA;
-       }
-
-       if (hmo_setup_channels(sdi) != SR_OK) {
-               sr_err("Failed to setup channel configuration!");
-               return SR_ERR;
-       }
-
-       sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50,
-                       hmo_receive_data, (void *)sdi);
-
-       /* Send header packet to the session bus. */
-       std_session_send_df_header(cb_data, LOG_PREFIX);
-
-       devc->current_channel = devc->enabled_channels;
-
-       return hmo_request_data(sdi);
-}
-
-static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
-{
-       struct dev_context *devc;
-       struct sr_scpi_dev_inst *scpi;
-       struct sr_datafeed_packet packet;
-
-       (void)cb_data;
-
-       packet.type = SR_DF_END;
-       packet.payload = NULL;
-       sr_session_send(sdi, &packet);
-
-       if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR_DEV_CLOSED;
-
-       devc = sdi->priv;
-
-       devc->num_frames = 0;
-       g_slist_free(devc->enabled_channels);
-       devc->enabled_channels = NULL;
-       scpi = sdi->conn;
-       sr_scpi_source_remove(sdi->session, scpi);
-
-       return SR_OK;
-}
-
-SR_PRIV struct sr_dev_driver hameg_hmo_driver_info = {
-       .name = "hameg-hmo",
-       .longname = "Hameg HMO",
-       .api_version = 1,
-       .init = init,
-       .cleanup = cleanup,
-       .scan = scan,
-       .dev_list = dev_list,
-       .dev_clear = dev_clear,
-       .config_get = config_get,
-       .config_set = config_set,
-       .config_list = config_list,
-       .dev_open = dev_open,
-       .dev_close = dev_close,
-       .dev_acquisition_start = dev_acquisition_start,
-       .dev_acquisition_stop = dev_acquisition_stop,
-       .priv = NULL,
-};