#define SERIALCOMM "115200/8n1/flow=1"
-SR_PRIV struct sr_dev_driver hameg_hmo_driver_info;
+static struct sr_dev_driver hameg_hmo_driver_info;
static const char *manufacturers[] = {
"HAMEG",
struct dev_context *devc = NULL;
const struct scope_config *model = NULL;
- if (sdi && (devc = sdi->priv)) {
+ if (sdi) {
+ devc = sdi->priv;
if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
return SR_ERR;
case SR_CHANNEL_ANALOG:
g_snprintf(command, sizeof(command),
(*model->scpi_dialect)[SCPI_CMD_GET_ANALOG_DATA],
+#ifdef WORDS_BIGENDIAN
+ "MSBF",
+#else
+ "LSBF",
+#endif
ch->index + 1);
break;
case SR_CHANNEL_LOGIC:
static int dev_acquisition_start(const struct sr_dev_inst *sdi)
{
GSList *l;
- gboolean digital_added;
+ gboolean digital_added[MAX_DIGITAL_GROUP_COUNT];
+ size_t group, pod_count;
struct sr_channel *ch;
struct dev_context *devc;
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;
- digital_added = FALSE;
+ /* Preset empty results. */
+ for (group = 0; group < ARRAY_SIZE(digital_added); group++)
+ digital_added[group] = FALSE;
g_slist_free(devc->enabled_channels);
devc->enabled_channels = NULL;
+ /*
+ * Contruct the list of enabled channels. Determine the highest
+ * number of digital pods involved in the acquisition.
+ */
+ pod_count = 0;
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) {
+ /* Only add a single digital channel per group (pod). */
+ group = ch->index / 8;
+ if (ch->type != SR_CHANNEL_LOGIC || !digital_added[group]) {
devc->enabled_channels = g_slist_append(
devc->enabled_channels, ch);
- if (ch->type == SR_CHANNEL_LOGIC)
- digital_added = TRUE;
+ if (ch->type == SR_CHANNEL_LOGIC) {
+ digital_added[group] = TRUE;
+ if (pod_count < group + 1)
+ pod_count = group + 1;
+ }
}
}
-
if (!devc->enabled_channels)
return SR_ERR;
+ devc->pod_count = pod_count;
+ devc->logic_data = NULL;
+ /*
+ * Check constraints. Some channels can be either analog or
+ * digital, but not both at the same time.
+ */
if (hmo_check_channels(devc->enabled_channels) != SR_OK) {
sr_err("Invalid channel configuration specified!");
- return SR_ERR_NA;
+ ret = SR_ERR_NA;
+ goto free_enabled;
}
+ /*
+ * Configure the analog and digital channels and the
+ * corresponding digital pods.
+ */
if (hmo_setup_channels(sdi) != SR_OK) {
sr_err("Failed to setup channel configuration!");
- return SR_ERR;
+ ret = SR_ERR;
+ goto free_enabled;
}
+ /*
+ * Start acquisition on the first enabled channel. The
+ * receive routine will continue driving the acquisition.
+ */
sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50,
hmo_receive_data, (void *)sdi);
- std_session_send_df_header(sdi, LOG_PREFIX);
+ std_session_send_df_header(sdi);
devc->current_channel = devc->enabled_channels;
return hmo_request_data(sdi);
+
+free_enabled:
+ g_slist_free(devc->enabled_channels);
+ devc->enabled_channels = NULL;
+ return ret;
}
static int dev_acquisition_stop(struct sr_dev_inst *sdi)
struct dev_context *devc;
struct sr_scpi_dev_inst *scpi;
- std_session_send_df_end(sdi, LOG_PREFIX);
+ std_session_send_df_end(sdi);
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
return SR_OK;
}
-SR_PRIV struct sr_dev_driver hameg_hmo_driver_info = {
+static struct sr_dev_driver hameg_hmo_driver_info = {
.name = "hameg-hmo",
.longname = "Hameg HMO",
.api_version = 1,
.dev_acquisition_stop = dev_acquisition_stop,
.context = NULL,
};
+SR_REGISTER_DEV_DRIVER(hameg_hmo_driver_info);