]> sigrok.org Git - libsigrok.git/blobdiff - hardware/hameg-hmo/api.c
Make SCPI functions device independent, with separate serial backend.
[libsigrok.git] / hardware / hameg-hmo / api.c
index 70d91a5a9ca19c45b08f495adf07f6648bd9742e..6a16bb1dba832419eed31d151e8e06dad74bc218 100644 (file)
@@ -19,7 +19,6 @@
 
 #include <stdlib.h>
 #include <glib/gstdio.h>
-
 #include "protocol.h"
 
 #define SERIALCOMM "115200/8n1/flow=1"
@@ -32,17 +31,18 @@ static const int32_t hwopts[] = {
 struct usb_id_info {
        uint16_t vendor_id;
        uint16_t product_id;
-} usb_id_info;
+};
 
 static struct usb_id_info ho_models[] = {
-       {
-               .vendor_id  = 0x0403,
-               .product_id = 0xed72, /* HO720 */
-       },
-       {
-               .vendor_id  = 0x0403,
-               .product_id = 0xed73, /* HO730 */
-       },
+       { 0x0403, 0xed72 }, /* HO720 */
+       { 0x0403, 0xed73 }, /* HO730 */
+};
+
+enum {
+       PG_INVALID = -1,
+       PG_NONE,
+       PG_ANALOG,
+       PG_DIGITAL,
 };
 
 static int init(struct sr_context *sr_ctx)
@@ -53,27 +53,31 @@ static int init(struct sr_context *sr_ctx)
 /**
  * Find USB serial devices via the USB vendor ID and product ID.
  *
- * @param vendor_id vendor ID of the USB device.
- * @param product_id product ID of the USB device.
+ * @param vendor_id Vendor ID of the USB device.
+ * @param product_id Product ID of the USB device.
  *
- * @return A GSList of strings containing the path of the serial device or null
- * if no serial device is found. The returned list must be freed by the caller.
+ * @return A GSList of strings containing the path of the serial device or
+ *         NULL if no serial device is found. The returned list must be freed
+ *         by the caller.
  */
-static GSList *auto_find_usb(unsigned long vendor_id,
-                            unsigned long product_id)
+static GSList *auto_find_usb(uint16_t vendor_id, uint16_t product_id)
 {
 #ifdef __linux__
        const gchar *usb_dev;
        const char device_tree[] = "/sys/bus/usb/devices/";
-
-       GDir *devices_dir;
-
+       GDir *devices_dir, *device_dir;
        GSList *l = NULL;
-       GSList *tty_devices;
+       GSList *tty_devs;
        GSList *matched_paths;
+       FILE *fd;
+       char tmp[5];
+       gchar *vendor_path, *product_path, *path_copy;
+       gchar *prefix, *subdir_path, *device_path, *tty_path;
+       unsigned long read_vendor_id, read_product_id;
+       const char *file;
 
        l = NULL;
-       tty_devices = NULL;
+       tty_devs = NULL;
        matched_paths = NULL;
 
        if (!(devices_dir = g_dir_open(device_tree, 0, NULL)))
@@ -81,18 +85,9 @@ static GSList *auto_find_usb(unsigned long vendor_id,
 
        /*
         * Find potential candidates using the vendor ID and product ID
-        * and store them in matched_paths
+        * and store them in matched_paths.
         */
        while ((usb_dev = g_dir_read_name(devices_dir))) {
-               FILE *fd;
-               char tmp[5];
-
-               gchar *vendor_path;
-               gchar *product_path;
-
-               unsigned long read_vendor_id;
-               unsigned long read_product_id;
-
                vendor_path = g_strconcat(device_tree,
                                          usb_dev, "/idVendor", NULL);
                product_path = g_strconcat(device_tree,
@@ -126,29 +121,19 @@ static GSList *auto_find_usb(unsigned long vendor_id,
 
                if (vendor_id == read_vendor_id &&
                    product_id == read_product_id) {
-                       gchar *path_copy;
-
                        path_copy = g_strdup(usb_dev);
                        matched_paths = g_slist_prepend(matched_paths,
                                                        path_copy);
                }
 
-       skip_device:
+skip_device:
                g_free(vendor_path);
                g_free(product_path);
        }
        g_dir_close(devices_dir);
 
-       /* For every matched device try to find a ttyUSBX subfolder */
+       /* For every matched device try to find a ttyUSBX subfolder. */
        for (l = matched_paths; l; l = l->next) {
-               const char *file;
-
-               GDir *device_dir;
-
-               gchar *prefix;
-               gchar *subdir_path;
-               gchar *device_path;
-
                subdir_path = NULL;
 
                device_path = g_strconcat(device_tree, l->data, NULL);
@@ -163,8 +148,7 @@ static GSList *auto_find_usb(unsigned long vendor_id,
                while ((file = g_dir_read_name(device_dir))) {
                        if (g_str_has_prefix(file, prefix)) {
                                subdir_path = g_strconcat(device_path,
-                                                         "/", file,
-                                                         NULL);
+                                               "/", file, NULL);
                                break;
                        }
                }
@@ -182,14 +166,12 @@ static GSList *auto_find_usb(unsigned long vendor_id,
 
                        while ((file = g_dir_read_name(device_dir))) {
                                if (g_str_has_prefix(file, "ttyUSB")) {
-                                       gchar *tty_path;
-
                                        tty_path = g_strconcat("/dev/",
                                                               file, NULL);
-                                       sr_dbg("Found USB device %04x:%04x attached to %s",
+                                       sr_dbg("Found USB device %04x:%04x attached to %s.",
                                               vendor_id, product_id, tty_path);
-                                       tty_devices = g_slist_prepend(tty_devices,
-                                                                     tty_path);
+                                       tty_devs = g_slist_prepend(tty_devs,
+                                                       tty_path);
                                        break;
                                }
                        }
@@ -198,7 +180,7 @@ static GSList *auto_find_usb(unsigned long vendor_id,
        }
        g_slist_free_full(matched_paths, g_free);
 
-       return tty_devices;
+       return tty_devs;
 #else
        return NULL;
 #endif
@@ -207,16 +189,14 @@ static GSList *auto_find_usb(unsigned long vendor_id,
 static GSList *scan(GSList *options)
 {
        GSList *devices;
-
        struct drv_context *drvc;
        struct sr_dev_inst *sdi;
-
-       const char *serial_device;
-       const char *serial_options;
+       const char *serial_device, *serial_options;
+       GSList *l, *tty_devs;
+       unsigned int i;
 
        serial_device = NULL;
        serial_options = SERIALCOMM;
-
        sdi = NULL;
        devices = NULL;
        drvc = di->priv;
@@ -224,38 +204,30 @@ static GSList *scan(GSList *options)
 
        if (sr_serial_extract_options(options, &serial_device,
                                      &serial_options) == SR_OK) {
-               sdi = hameg_probe_serial_device(serial_device, serial_options);
-
+               sdi = hmo_probe_serial_device(serial_device, serial_options);
                if (sdi != NULL) {
                        devices = g_slist_append(devices, sdi);
                        drvc->instances = g_slist_append(drvc->instances, sdi);
                }
-
        } else {
-               GSList *l;
-               GSList *tty_devices;
-
-               unsigned int i;
-
-               tty_devices = NULL;
+               tty_devs = NULL;
 
                for (i = 0; i < ARRAY_SIZE(ho_models); i++) {
                        if ((l = auto_find_usb(ho_models[i].vendor_id,
                                           ho_models[i].product_id)) == NULL)
                                continue;
-
-                       tty_devices = g_slist_concat(tty_devices, l);
+                       tty_devs = g_slist_concat(tty_devs, l);
                }
 
-               for (l = tty_devices; l; l = l->next) {
-                       sdi = hameg_probe_serial_device(l->data, serial_options);
+               for (l = tty_devs; l; l = l->next) {
+                       sdi = hmo_probe_serial_device(l->data, serial_options);
                        if (sdi != NULL) {
                                devices = g_slist_append(devices, sdi);
                                drvc->instances = g_slist_append(drvc->instances, sdi);
                        }
                }
 
-               g_slist_free_full(tty_devices, g_free);
+               g_slist_free_full(tty_devs, g_free);
        }
 
        return devices;
@@ -269,18 +241,16 @@ static GSList *dev_list(void)
 static void clear_helper(void *priv)
 {
        unsigned int i;
-
        struct dev_context *devc;
        struct scope_config *model;
 
        devc = priv;
        model = devc->model_config;
 
-       scope_state_free(devc->model_state);
+       hmo_scope_state_free(devc->model_state);
 
-       for (i = 0; i < model->analog_channels; ++i) {
+       for (i = 0; i < model->analog_channels; ++i)
                g_slist_free(devc->analog_groups[i].probes);
-       }
 
        for (i = 0; i < model->digital_pods; ++i) {
                g_slist_free(devc->digital_groups[i].probes);
@@ -300,11 +270,10 @@ static int dev_clear(void)
 
 static int dev_open(struct sr_dev_inst *sdi)
 {
-       if (sdi->status != SR_ST_ACTIVE &&
-           serial_open(sdi->conn, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
+       if (sdi->status != SR_ST_ACTIVE && sr_scpi_open(sdi->conn) != SR_OK)
                return SR_ERR;
 
-       if (scope_state_get(sdi) != SR_OK)
+       if (hmo_scope_state_get(sdi) != SR_OK)
                return SR_ERR;
 
        sdi->status = SR_ST_ACTIVE;
@@ -317,7 +286,7 @@ static int dev_close(struct sr_dev_inst *sdi)
        if (sdi->status == SR_ST_INACTIVE)
                return SR_OK;
 
-       serial_close(sdi->conn);
+       sr_scpi_close(sdi->conn);
 
        sdi->status = SR_ST_INACTIVE;
 
@@ -351,16 +320,15 @@ static int check_probe_group(struct dev_context *devc,
                        return PG_DIGITAL;
 
        sr_err("Invalid probe group specified.");
+
        return PG_INVALID;
 }
 
 static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
                      const struct sr_probe_group *probe_group)
 {
-       int ret;
-       int pg_type;
+       int ret, pg_type;
        unsigned int i;
-
        struct dev_context *devc;
        struct scope_config *model;
 
@@ -378,26 +346,23 @@ static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
                *data = g_variant_new_int32(model->num_xdivs);
                ret = SR_OK;
                break;
-
        case SR_CONF_NUM_VDIV:
                if (pg_type == PG_NONE) {
                        sr_err("No probe group specified.");
                        return SR_ERR_PROBE_GROUP;
-
                } else if (pg_type == PG_ANALOG) {
                        for (i = 0; i < model->analog_channels; ++i) {
-                               if (probe_group == &devc->analog_groups[i]) {
-                                       *data = g_variant_new_int32(model->num_ydivs);
-                                       ret = SR_OK;
-                                       break;
-                               }
+                               if (probe_group != &devc->analog_groups[i])
+                                       continue;
+                               *data = g_variant_new_int32(model->num_ydivs);
+                               ret = SR_OK;
+                               break;
                        }
 
                } else {
                        ret = SR_ERR_NA;
                }
                break;
-
        default:
                ret = SR_ERR_NA;
        }
@@ -408,7 +373,6 @@ static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
 static GVariant *build_tuples(const uint64_t (*array)[][2], unsigned int n)
 {
        unsigned int i;
-
        GVariant *rational[2];
        GVariantBuilder gvb;
 
@@ -418,7 +382,7 @@ static GVariant *build_tuples(const uint64_t (*array)[][2], unsigned int n)
                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 */
+               /* FIXME: Valgrind reports a memory leak here. */
                g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2));
        }
 
@@ -428,14 +392,15 @@ static GVariant *build_tuples(const uint64_t (*array)[][2], unsigned int n)
 static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
                      const struct sr_probe_group *probe_group)
 {
-       int ret;
-       int pg_type;
-       unsigned int i;
+       int ret, pg_type;
+       unsigned int i, j;
        char command[MAX_COMMAND_SIZE];
-
        struct dev_context *devc;
        struct scope_config *model;
        struct scope_state *state;
+       const char *tmp;
+       uint64_t p, q, tmp_u64;
+       double tmp_d;
 
        if (!sdi || !(devc = sdi->priv))
                return SR_ERR_ARG;
@@ -453,33 +418,21 @@ static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
                devc->frame_limit = g_variant_get_uint64(data);
                ret = SR_OK;
                break;
-
        case SR_CONF_TRIGGER_SOURCE:
-       {
-               const char *tmp;
-
                tmp = g_variant_get_string(data, NULL);
-
                for (i = 0; (*model->trigger_sources)[i]; i++) {
-                       if (!g_strcmp0(tmp, (*model->trigger_sources)[i])) {
-                               state->trigger_source = i;
-
-                               g_snprintf(command, sizeof(command),
-                                          (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SOURCE],
-                                          (*model->trigger_sources)[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;
-                       }
+                       ret = sr_scpi_send(sdi->conn, command);
+                       break;
                }
-       }
-       break;
-
+               break;
        case SR_CONF_VDIV:
-       {
-               unsigned int j;
-               uint64_t p, q;
-
                if (pg_type == PG_NONE) {
                        sr_err("No probe group specified.");
                        return SR_ERR_PROBE_GROUP;
@@ -488,93 +441,72 @@ static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
                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]){
-                               for (j = 1; j <= model->analog_channels; ++j) {
-                                       if (probe_group == &devc->analog_groups[j - 1]) {
-                                               state->analog_channels[j-1].vdiv = (float) p / q;
-                                               g_snprintf(command, sizeof(command),
-                                                          (*model->scpi_dialect)[SCPI_CMD_SET_VERTICAL_DIV],
-                                                          j, state->analog_channels[j-1].vdiv);
-
-                                               if (sr_scpi_send(sdi->conn, command) != SR_OK ||
-                                                   sr_scpi_get_opc(sdi->conn) != SR_OK)
-                                                       return SR_ERR;
-
-                                               break;
-                                       }
-                               }
+                       if (p != (*model->vdivs)[i][0] ||
+                           q != (*model->vdivs)[i][1])
+                               continue;
+                       for (j = 1; j <= model->analog_channels; ++j) {
+                               if (probe_group != &devc->analog_groups[j - 1])
+                                       continue;
+                               state->analog_channels[j - 1].vdiv = (float) p / q;
+                               g_snprintf(command, sizeof(command),
+                                          (*model->scpi_dialect)[SCPI_CMD_SET_VERTICAL_DIV],
+                                          j, state->analog_channels[j-1].vdiv);
+
+                               if (sr_scpi_send(sdi->conn, command) != SR_OK ||
+                                   sr_scpi_get_opc(sdi->conn) != SR_OK)
+                                       return SR_ERR;
 
-                               ret = SR_OK;
                                break;
                        }
-               }
-       }
-       break;
 
+                       ret = SR_OK;
+                       break;
+               }
+               break;
        case SR_CONF_TIMEBASE:
-       {
-               uint64_t p, q;
-
                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]){
-                               state->timebase = (float) p / q;
-                               g_snprintf(command, sizeof(command),
-                                          (*model->scpi_dialect)[SCPI_CMD_SET_TIMEBASE],
-                                          state->timebase);
+                       if (p != (*model->timebases)[i][0] ||
+                           q != (*model->timebases)[i][1])
+                               continue;
+                       state->timebase = (float) p / q;
+                       g_snprintf(command, sizeof(command),
+                                  (*model->scpi_dialect)[SCPI_CMD_SET_TIMEBASE],
+                                  state->timebase);
 
-                               ret = sr_scpi_send(sdi->conn, command);
-                               break;
-                       }
+                       ret = sr_scpi_send(sdi->conn, command);
+                       break;
                }
-       }
-       break;
-
+               break;
        case SR_CONF_HORIZ_TRIGGERPOS:
-       {
-               double tmp;
+               tmp_d = g_variant_get_double(data);
 
-               tmp = g_variant_get_double(data);
-
-               if (tmp < 0.0 || tmp > 1.0)
+               if (tmp_d < 0.0 || tmp_d > 1.0)
                        return SR_ERR;
 
-               state->horiz_triggerpos = -(tmp - 0.5) * state->timebase * model->num_xdivs;
+               state->horiz_triggerpos = -(tmp_d - 0.5) * state->timebase * model->num_xdivs;
                g_snprintf(command, sizeof(command),
                           (*model->scpi_dialect)[SCPI_CMD_SET_HORIZ_TRIGGERPOS],
                           state->horiz_triggerpos);
 
                ret = sr_scpi_send(sdi->conn, command);
-       }
-       break;
-
+               break;
        case SR_CONF_TRIGGER_SLOPE:
-       {
-               uint64_t tmp;
+               tmp_u64 = g_variant_get_uint64(data);
 
-               tmp = g_variant_get_uint64(data);
-
-               if (tmp != 0 && tmp != 1)
+               if (tmp_u64 != 0 && tmp_u64 != 1)
                        return SR_ERR;
 
-               state->trigger_slope = tmp;
+               state->trigger_slope = tmp_u64;
 
                g_snprintf(command, sizeof(command),
                           (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SLOPE],
-                          tmp ? "POS" : "NEG");
+                          tmp_u64 ? "POS" : "NEG");
 
                ret = sr_scpi_send(sdi->conn, command);
-       }
-       break;
-
+               break;
        case SR_CONF_COUPLING:
-       {
-               unsigned int j;
-               const char *tmp;
-
                if (pg_type == PG_NONE) {
                        sr_err("No probe group specified.");
                        return SR_ERR_PROBE_GROUP;
@@ -583,29 +515,27 @@ static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
                tmp = g_variant_get_string(data, NULL);
 
                for (i = 0; (*model->coupling_options)[i]; i++) {
-                       if (!strcmp(tmp, (*model->coupling_options)[i])) {
-                               for (j = 1; j <= model->analog_channels; ++j) {
-                                       if (probe_group == &devc->analog_groups[j - 1]) {
-                                               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;
-                                       }
-                               }
+                       if (strcmp(tmp, (*model->coupling_options)[i]) != 0)
+                               continue;
+                       for (j = 1; j <= model->analog_channels; ++j) {
+                               if (probe_group != &devc->analog_groups[j - 1])
+                                       continue;
+                               state->analog_channels[j-1].coupling = i;
 
-                               ret = SR_OK;
+                               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;
                        }
-               }
-       }
-       break;
 
+                       ret = SR_OK;
+                       break;
+               }
+               break;
        default:
                ret = SR_ERR_NA;
                break;
@@ -618,10 +548,9 @@ static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
 }
 
 static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
-                     const struct sr_probe_group *probe_group)
+                      const struct sr_probe_group *probe_group)
 {
        int pg_type;
-
        struct dev_context *devc;
        struct scope_config *model;
 
@@ -637,44 +566,35 @@ static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
        case SR_CONF_DEVICE_OPTIONS:
                if (pg_type == PG_NONE) {
                        *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
-                                                         model->hw_caps,
-                                                         model->num_hwcaps,
-                                                         sizeof(int32_t));
+                               model->hw_caps, model->num_hwcaps,
+                               sizeof(int32_t));
                } else if (pg_type == PG_ANALOG) {
                        *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
-                                                         model->analog_hwcaps,
-                                                         model->num_analog_hwcaps,
-                                                         sizeof(int32_t));
+                               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));
+                               NULL, 0, sizeof(int32_t));
                }
                break;
-
        case SR_CONF_COUPLING:
                if (pg_type == PG_NONE)
                        return SR_ERR_PROBE_GROUP;
-
                *data = g_variant_new_strv(*model->coupling_options,
-                                          g_strv_length((char **) *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));
+                          g_strv_length((char **)*model->trigger_sources));
                break;
-
        case SR_CONF_TIMEBASE:
                *data = build_tuples(model->timebases, model->num_timebases);
                break;
-
        case SR_CONF_VDIV:
                if (pg_type == PG_NONE)
                        return SR_ERR_PROBE_GROUP;
-
                *data = build_tuples(model->vdivs, model->num_vdivs);
                break;
-
        default:
                return SR_ERR_NA;
        }
@@ -685,7 +605,6 @@ static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
 SR_PRIV int hmo_request_data(const struct sr_dev_inst *sdi)
 {
        char command[MAX_COMMAND_SIZE];
-
        struct sr_probe *probe;
        struct dev_context *devc;
        struct scope_config *model;
@@ -707,7 +626,7 @@ SR_PRIV int hmo_request_data(const struct sr_dev_inst *sdi)
                           probe->index < 8 ? 1 : 2);
                break;
        default:
-               sr_err("Invalid probe type");
+               sr_err("Invalid probe type.");
                break;
        }
 
@@ -717,21 +636,13 @@ SR_PRIV int hmo_request_data(const struct sr_dev_inst *sdi)
 static int hmo_check_probes(GSList *probes)
 {
        GSList *l;
-       gboolean enabled_pod1;
-       gboolean enabled_pod2;
-       gboolean enabled_chan3;
-       gboolean enabled_chan4;
-
        struct sr_probe *probe;
+       gboolean enabled_pod1, enabled_pod2, enabled_chan3, enabled_chan4;
 
-       enabled_pod1 = FALSE;
-       enabled_pod2 = FALSE;
-       enabled_chan3 = FALSE;
-       enabled_chan4 = FALSE;
+       enabled_pod1 = enabled_pod2 = enabled_chan3 = enabled_chan4 = FALSE;
 
        for (l = probes; l; l = l->next) {
                probe = l->data;
-
                switch (probe->type) {
                case SR_PROBE_ANALOG:
                        if (probe->index == 2)
@@ -739,14 +650,12 @@ static int hmo_check_probes(GSList *probes)
                        else if (probe->index == 3)
                                enabled_chan4 = TRUE;
                        break;
-
                case SR_PROBE_LOGIC:
                        if (probe->index < 8)
                                enabled_pod1 = TRUE;
                        else
                                enabled_pod2 = TRUE;
                        break;
-
                default:
                        return SR_ERR;
                }
@@ -765,16 +674,14 @@ static int hmo_setup_probes(const struct sr_dev_inst *sdi)
        unsigned int i;
        gboolean *pod_enabled;
        char command[MAX_COMMAND_SIZE];
-
        struct scope_state *state;
        struct scope_config *model;
-
        struct sr_probe *probe;
        struct dev_context *devc;
-       struct sr_serial_dev_inst *serial;
+       struct sr_scpi_dev_inst *scpi;
 
        devc = sdi->priv;
-       serial = sdi->conn;
+       scpi = sdi->conn;
        state = devc->model_state;
        model = devc->model_config;
 
@@ -782,24 +689,19 @@ static int hmo_setup_probes(const struct sr_dev_inst *sdi)
 
        for (l = sdi->probes; l; l = l->next) {
                probe = l->data;
-
                switch (probe->type) {
                case SR_PROBE_ANALOG:
-               {
-                       if (probe->enabled != state->analog_channels[probe->index].state) {
-                               g_snprintf(command, sizeof(command),
-                                          (*model->scpi_dialect)[SCPI_CMD_SET_ANALOG_CHAN_STATE],
-                                          probe->index + 1, probe->enabled);
-
-                               if (sr_scpi_send(serial, command) != SR_OK)
-                                       return SR_ERR;
-                               state->analog_channels[probe->index].state = probe->enabled;
-                       }
-               }
-               break;
+                       if (probe->enabled == state->analog_channels[probe->index].state)
+                               break;
+                       g_snprintf(command, sizeof(command),
+                                  (*model->scpi_dialect)[SCPI_CMD_SET_ANALOG_CHAN_STATE],
+                                  probe->index + 1, probe->enabled);
 
+                       if (sr_scpi_send(scpi, command) != SR_OK)
+                               return SR_ERR;
+                       state->analog_channels[probe->index].state = probe->enabled;
+                       break;
                case SR_PROBE_LOGIC:
-               {
                        /*
                         * A digital POD needs to be enabled for every group of
                         * 8 probes.
@@ -807,35 +709,31 @@ static int hmo_setup_probes(const struct sr_dev_inst *sdi)
                        if (probe->enabled)
                                pod_enabled[probe->index < 8 ? 0 : 1] = TRUE;
 
-                       if (probe->enabled != state->digital_channels[probe->index]) {
-                               g_snprintf(command, sizeof(command),
-                                          (*model->scpi_dialect)[SCPI_CMD_SET_DIG_CHAN_STATE],
-                                          probe->index, probe->enabled);
-
-                               if (sr_scpi_send(serial, command) != SR_OK)
-                                       return SR_ERR;
+                       if (probe->enabled == state->digital_channels[probe->index])
+                               break;
+                       g_snprintf(command, sizeof(command),
+                                  (*model->scpi_dialect)[SCPI_CMD_SET_DIG_CHAN_STATE],
+                                  probe->index, probe->enabled);
 
-                               state->digital_channels[probe->index] = probe->enabled;
-                       }
-               }
-               break;
+                       if (sr_scpi_send(scpi, command) != SR_OK)
+                               return SR_ERR;
 
+                       state->digital_channels[probe->index] = probe->enabled;
+                       break;
                default:
                        return SR_ERR;
                }
        }
 
        for (i = 1; i <= model->digital_pods; ++i) {
-               if (state->digital_pods[i-1] != pod_enabled[i-1]) {
-                       g_snprintf(command, sizeof(command),
-                                  (*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_STATE],
-                                  i, pod_enabled[i-1]);
-
-                       if (sr_scpi_send(serial, command) != SR_OK)
-                               return SR_ERR;
-
-                       state->digital_pods[i-1] = pod_enabled[i-1];
-               }
+               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];
        }
 
        g_free(pod_enabled);
@@ -847,29 +745,27 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
 {
        GSList *l;
        gboolean digital_added;
-
        struct sr_probe *probe;
        struct dev_context *devc;
-       struct sr_serial_dev_inst *serial;
+       struct sr_scpi_dev_inst *scpi;
 
        if (sdi->status != SR_ST_ACTIVE)
                return SR_ERR_DEV_CLOSED;
 
-       serial = sdi->conn;
+       scpi = sdi->conn;
        devc = sdi->priv;
        digital_added = FALSE;
 
        for (l = sdi->probes; l; l = l->next) {
                probe = l->data;
-
-               if (probe->enabled) {
-                       /* Only add a single digital probe */
-                       if (probe->type != SR_PROBE_LOGIC  || !digital_added) {
-                               devc->enabled_probes = g_slist_append(devc->enabled_probes,
-                                                                     probe);
-                               if (probe->type == SR_PROBE_LOGIC)
-                                       digital_added = TRUE;
-                       }
+               if (!probe->enabled)
+                       continue;
+               /* Only add a single digital probe. */
+               if (probe->type != SR_PROBE_LOGIC || !digital_added) {
+                       devc->enabled_probes = g_slist_append(
+                                       devc->enabled_probes, probe);
+                       if (probe->type == SR_PROBE_LOGIC)
+                               digital_added = TRUE;
                }
        }
 
@@ -886,7 +782,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
                return SR_ERR;
        }
 
-       sr_source_add(serial->fd, G_IO_IN, 50, hameg_hmo_receive_data, (void *)sdi);
+       sr_scpi_source_add(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);
@@ -899,7 +795,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 {
        struct dev_context *devc;
-       struct sr_serial_dev_inst *serial;
+       struct sr_scpi_dev_inst *scpi;
 
        (void)cb_data;
 
@@ -910,15 +806,15 @@ static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 
        g_slist_free(devc->enabled_probes);
        devc->enabled_probes = NULL;
-       serial = sdi->conn;
-       sr_source_remove(serial->fd);
+       scpi = sdi->conn;
+       sr_scpi_source_remove(scpi);
 
        return SR_OK;
 }
 
 SR_PRIV struct sr_dev_driver hameg_hmo_driver_info = {
        .name = "hameg-hmo",
-       .longname = "Hameg HMO scope driver",
+       .longname = "Hameg HMO",
        .api_version = 1,
        .init = init,
        .cleanup = cleanup,