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[libsigrok.git] / src / hardware / rigol-ds / protocol.c

diff --git a/src/hardware/rigol-ds/protocol.c b/src/hardware/rigol-ds/protocol.c
index 453ab658edf21444fc85ba1caa751cd26dfdac4f..26b492053b653a72a92d2dd3866a6db81e5405e7 100644 (file)
--- a/src/hardware/rigol-ds/protocol.c
+++ b/src/hardware/rigol-ds/protocol.c
@@ -333,12 +333,17 @@ SR_PRIV int rigol_ds_capture_start(const struct sr_dev_inst *sdi)
        struct dev_context *devc;
        gchar *trig_mode;
        unsigned int num_channels, i, j;
+       int buffer_samples;
 
        if (!(devc = sdi->priv))
                return SR_ERR;
 
-       sr_dbg("Starting data capture for frameset %" PRIu64 " of %" PRIu64,
-              devc->num_frames + 1, devc->limit_frames);
+       if (devc->limit_frames == 0)
+               sr_dbg("Starting data capture for frameset %" PRIu64,
+                      devc->num_frames + 1);
+       else
+               sr_dbg("Starting data capture for frameset %" PRIu64 " of %"
+                      PRIu64, devc->num_frames + 1, devc->limit_frames);
 
        switch (devc->model->series->protocol) {
        case PROTOCOL_V1:
@@ -394,12 +399,29 @@ SR_PRIV int rigol_ds_capture_start(const struct sr_dev_inst *sdi)
                                        }
                                }
 
-                               devc->analog_frame_size = devc->digital_frame_size =
-                                       num_channels == 1 ?
-                                               devc->model->series->buffer_samples :
-                                                       num_channels == 2 ?
-                                                               devc->model->series->buffer_samples / 2 :
-                                                               devc->model->series->buffer_samples / 4;
+                               buffer_samples = devc->model->series->buffer_samples;
+                               if (buffer_samples == 0)
+                               {
+                                       /* The DS4000 series does not have a fixed memory depth, it
+                                        * can be chosen from the menu and also varies with number
+                                        * of active channels. Retrieve the actual number with the
+                                        * ACQ:MDEP command. */
+                                       sr_scpi_get_int(sdi->conn, "ACQ:MDEP?", &buffer_samples);
+                                       devc->analog_frame_size = devc->digital_frame_size =
+                                                       buffer_samples;
+                               }
+                               else
+                               {
+                                       /* The DS1000Z series has a fixed memory depth which we
+                                        * need to divide correctly according to the number of
+                                        * active channels. */
+                                       devc->analog_frame_size = devc->digital_frame_size =
+                                               num_channels == 1 ?
+                                                       buffer_samples :
+                                                               num_channels == 2 ?
+                                                                       buffer_samples / 2 :
+                                                                       buffer_samples / 4;
+                               }
                        }
 
                        if (rigol_ds_config_set(sdi, ":SING") != SR_OK)
@@ -474,10 +496,20 @@ SR_PRIV int rigol_ds_channel_start(const struct sr_dev_inst *sdi)
 
        if (devc->model->series->protocol >= PROTOCOL_V3 &&
                        ch->type == SR_CHANNEL_ANALOG) {
+               /* Vertical increment. */
+               if (sr_scpi_get_float(sdi->conn, ":WAV:YINC?",
+                               &devc->vert_inc[ch->index]) != SR_OK)
+                       return SR_ERR;
+               /* Vertical origin. */
+               if (sr_scpi_get_float(sdi->conn, ":WAV:YOR?",
+                       &devc->vert_origin[ch->index]) != SR_OK)
+                       return SR_ERR;
                /* Vertical reference. */
                if (sr_scpi_get_int(sdi->conn, ":WAV:YREF?",
                                &devc->vert_reference[ch->index]) != SR_OK)
                        return SR_ERR;
+       } else if (ch->type == SR_CHANNEL_ANALOG) {
+               devc->vert_inc[ch->index] = devc->vdiv[ch->index] / 25.6;
        }
 
        rigol_ds_set_wait_event(devc, WAIT_BLOCK);
@@ -557,7 +589,7 @@ SR_PRIV int rigol_ds_receive(int fd, int revents, void *cb_data)
        struct sr_analog_meaning meaning;
        struct sr_analog_spec spec;
        struct sr_datafeed_logic logic;
-       double vdiv, offset;
+       double vdiv, offset, origin;
        int len, i, vref;
        struct sr_channel *ch;
        gsize expected_data_bytes;
@@ -677,11 +709,12 @@ SR_PRIV int rigol_ds_receive(int fd, int revents, void *cb_data)
 
        if (ch->type == SR_CHANNEL_ANALOG) {
                vref = devc->vert_reference[ch->index];
-               vdiv = devc->vdiv[ch->index] / 25.6;
+               vdiv = devc->vert_inc[ch->index];
+               origin = devc->vert_origin[ch->index];
                offset = devc->vert_offset[ch->index];
                if (devc->model->series->protocol >= PROTOCOL_V3)
                        for (i = 0; i < len; i++)
-                               devc->data[i] = ((int)devc->buffer[i] - vref) * vdiv - offset;
+                               devc->data[i] = ((int)devc->buffer[i] - vref - origin) * vdiv;
                else
                        for (i = 0; i < len; i++)
                                devc->data[i] = (128 - devc->buffer[i]) * vdiv - offset;
@@ -723,7 +756,8 @@ SR_PRIV int rigol_ds_receive(int fd, int revents, void *cb_data)
                        if (devc->data_source != DATA_SOURCE_LIVE)
                                rigol_ds_set_wait_event(devc, WAIT_BLOCK);
                }
-               if (!sr_scpi_read_complete(scpi)) {
+               /* End acquisition when data for all channels is acquired. */
+               if (!sr_scpi_read_complete(scpi) && !devc->channel_entry->next) {
                        sr_err("Read should have been completed");
                        packet.type = SR_DF_FRAME_END;
                        sr_session_send(sdi, &packet);
@@ -867,7 +901,8 @@ SR_PRIV int rigol_ds_get_dev_cfg(const struct sr_dev_inst *sdi)
        sr_dbg("Current trigger source %s", devc->trigger_source);
 
        /* Horizontal trigger position. */
-       if (sr_scpi_get_float(sdi->conn, ":TIM:OFFS?", &devc->horiz_triggerpos) != SR_OK)
+       if (sr_scpi_get_float(sdi->conn, devc->model->cmds[CMD_GET_HORIZ_TRIGGERPOS].str,
+                       &devc->horiz_triggerpos) != SR_OK)
                return SR_ERR;
        sr_dbg("Current horizontal trigger position %g", devc->horiz_triggerpos);