/*
* This file is part of the libsigrok project.
*
- * Copyright (C) 2018 mhooijboer <marchelh@gmail.com>
+ * Siglent implementation:
+ * Copyright (C) 2016 mhooijboer <marchelh@gmail.com>
+ *
+ * The Siglent implementation is based on Rigol driver sources, which are:
+ * Copyright (C) 2012 Martin Ling <martin-git@earth.li>
+ * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
+ * Copyright (C) 2013 Mathias Grimmberger <mgri@zaphod.sax.de>
*
* 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
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#define _GNU_SOURCE
+
#include <config.h>
+
+#include <errno.h>
+#include <glib.h>
+#include <glib-2.0/glib/gmacros.h>
+#include <glib-2.0/glib/gmain.h>
+#include <math.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <libsigrok/libsigrok.h>
+#include "libsigrok-internal.h"
+#include "scpi.h"
#include "protocol.h"
-SR_PRIV int siglent_sds_receive_data(int fd, int revents, void *cb_data)
+/* Set the next event to wait for in siglent_sds_receive */
+static void siglent_sds_set_wait_event(struct dev_context *devc, enum wait_events event)
+{
+
+ if (event == WAIT_STOP) {
+ devc->wait_status = 2;
+ } else {
+ devc->wait_status = 1;
+ devc->wait_event = event;
+ }
+}
+
+/*
+ * Waiting for a event will return a timeout after 2 to 3 seconds in order
+ * to not block the application.
+ */
+static int siglent_sds_event_wait(const struct sr_dev_inst *sdi)
+{
+ char *buf;
+ long s;
+ int out;
+ struct dev_context *devc;
+ time_t start;
+
+ if (!(devc = sdi->priv))
+ return SR_ERR;
+
+ start = time(NULL);
+
+ s = 10000; /* Sleep time for status refresh */
+ if (devc->wait_status == 1) {
+ do {
+ if (time(NULL) - start >= 3) {
+ sr_dbg("Timeout waiting for trigger");
+ return SR_ERR_TIMEOUT;
+ }
+
+ if (sr_scpi_get_string(sdi->conn, ":INR?", &buf) != SR_OK)
+ return SR_ERR;
+ sr_atoi(buf, &out);
+ g_usleep(s);
+ } while (out == 0);
+ sr_dbg("Device triggerd");
+ if (devc->timebase < 0.51) {
+ if (devc->timebase > 0.99e-6) {
+ /*
+ * Timebase * num hor. divs * 85(%) * 1e6(usecs) / 100
+ * -> 85 percent of sweep time
+ */
+ s = (devc->timebase * devc->model->series->num_horizontal_divs * 1000);
+ sr_spew("Sleeping for %ld usecs after trigger, to let the acq buffer in the device fill", s);
+ g_usleep(s);
+ }
+
+ }
+ }
+ if (devc->wait_status == 2) {
+ do {
+ if (time(NULL) - start >= 3) {
+ sr_dbg("Timeout waiting for trigger");
+ return SR_ERR_TIMEOUT;
+ }
+ if (sr_scpi_get_string(sdi->conn, ":INR?", &buf) != SR_OK)
+ return SR_ERR;
+ sr_atoi(buf, &out);
+ g_usleep(s);
+ /* XXX
+ * Now this loop condition looks suspicious! A bitwise
+ * OR of a variable and a non-zero literal should be
+ * non-zero. Logical AND of several non-zero values
+ * should be non-zero. Are many parts of the condition
+ * not taking effect? Was some different condition meant
+ * to get encoded? This needs review, and adjustment.
+ */
+ } while ((out | DEVICE_STATE_TRIG_RDY && out | DEVICE_STATE_DATA_ACQ) && out | DEVICE_STATE_STOPPED);
+ sr_dbg("Device triggerd 2");
+ siglent_sds_set_wait_event(devc, WAIT_NONE);
+ }
+
+ return SR_OK;
+}
+
+static int siglent_sds_trigger_wait(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+
+ if (!(devc = sdi->priv))
+ return SR_ERR;
+ return siglent_sds_event_wait(sdi);
+}
+
+/* Wait for scope to got to "Stop" in single shot mode */
+static int siglent_sds_stop_wait(const struct sr_dev_inst *sdi)
+{
+
+ return siglent_sds_event_wait(sdi);
+}
+
+/* Send a configuration setting. */
+SR_PRIV int siglent_sds_config_set(const struct sr_dev_inst *sdi, const char *format, ...)
+{
+ va_list args;
+ int ret;
+
+ va_start(args, format);
+ ret = sr_scpi_send_variadic(sdi->conn, format, args);
+ va_end(args);
+
+ if (ret != SR_OK) {
+ return SR_ERR;
+ }
+
+ return SR_OK;
+}
+
+/* Start capturing a new frameset */
+SR_PRIV int siglent_sds_capture_start(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+
+ if (!(devc = sdi->priv))
+ return SR_ERR;
+
+ switch (devc->model->series->protocol) {
+ case SPO_MODEL:
+ if (devc->data_source == DATA_SOURCE_SCREEN) {
+ char *buf;
+ int out;
+
+ sr_dbg("Starting data capture for active frameset %" PRIu64 " of %" PRIu64,
+ devc->num_frames + 1, devc->limit_frames);
+ if (siglent_sds_config_set(sdi, "ARM") != SR_OK)
+ return SR_ERR;
+ if (sr_scpi_get_string(sdi->conn, ":INR?", &buf) != SR_OK)
+ return SR_ERR;
+ sr_atoi(buf, &out);
+ if (out == DEVICE_STATE_TRIG_RDY) {
+ siglent_sds_set_wait_event(devc, WAIT_TRIGGER);
+ } else if (out == DEVICE_STATE_TRIG_RDY + 1) {
+ sr_spew("Device Triggerd");
+ siglent_sds_set_wait_event(devc, WAIT_BLOCK);
+ return SR_OK;
+ } else {
+ sr_spew("Device did not enter ARM mode");
+ return SR_ERR;
+ }
+ } else { //TODO implement History retrieval
+ unsigned int framecount;
+ char buf[200];
+ int ret;
+
+ sr_dbg("Starting data capture for history frameset");
+ if (siglent_sds_config_set(sdi, "FPAR?") != SR_OK)
+ return SR_ERR;
+ ret = sr_scpi_read_data(sdi->conn, buf, 200);
+ if (ret < 0) {
+ sr_err("Read error while reading data header.");
+ return SR_ERR;
+ }
+ memcpy(&framecount, buf + 40, 4);
+ if (devc->limit_frames > framecount) {
+ sr_err("Frame limit higher that frames in buffer of device!");
+ } else if (devc->limit_frames == 0) {
+ devc->limit_frames = framecount;
+ }
+ sr_dbg("Starting data capture for history frameset %" PRIu64 " of %" PRIu64,
+ devc->num_frames + 1, devc->limit_frames);
+ if (siglent_sds_config_set(sdi, "FRAM %i", devc->num_frames + 1) != SR_OK)
+ return SR_ERR;
+ if (siglent_sds_channel_start(sdi) != SR_OK)
+ return SR_ERR;
+ siglent_sds_set_wait_event(devc, WAIT_STOP);
+ }
+ break;
+ case NON_SPO_MODEL:
+ siglent_sds_set_wait_event(devc, WAIT_TRIGGER);
+ break;
+ }
+
+ return SR_OK;
+}
+
+/* Start reading data from the current channel */
+SR_PRIV int siglent_sds_channel_start(const struct sr_dev_inst *sdi)
{
- const struct sr_dev_inst *sdi;
struct dev_context *devc;
+ struct sr_channel *ch;
+
+ if (!(devc = sdi->priv))
+ return SR_ERR;
+
+ ch = devc->channel_entry->data;
+
+ sr_dbg("Starting reading data from channel %d", ch->index + 1);
+
+ switch (devc->model->series->protocol) {
+ case NON_SPO_MODEL:
+ case SPO_MODEL:
+ if (ch->type == SR_CHANNEL_LOGIC) {
+ if (sr_scpi_send(sdi->conn, "D%d:WF?",
+ ch->index + 1) != SR_OK)
+ return SR_ERR;
+ } else {
+ if (sr_scpi_send(sdi->conn, "C%d:WF? ALL",
+ ch->index + 1) != SR_OK)
+ return SR_ERR;
+ }
+ siglent_sds_set_wait_event(devc, WAIT_NONE);
+ break;
+ }
+
+ siglent_sds_set_wait_event(devc, WAIT_BLOCK);
+
+ devc->num_channel_bytes = 0;
+ devc->num_header_bytes = 0;
+ devc->num_block_bytes = 0;
+
+ return SR_OK;
+}
+
+/* Read the header of a data block */
+static int siglent_sds_read_header(struct sr_dev_inst *sdi, int channelIndex)
+{
+ struct sr_scpi_dev_inst *scpi = sdi->conn;
+ struct dev_context *devc = sdi->priv;
+ char *buf = (char *)devc->buffer;
+ int ret;
+ int descLength;
+ int blockOffset = 15; // Offset for Descriptor block.
+ long dataLength = 0;
+
+ /* Read header from device */
+ ret = sr_scpi_read_data(scpi, buf + devc->num_header_bytes, devc->model->series->buffer_samples);
+ if (ret < 346) {
+ sr_err("Read error while reading data header.");
+ return SR_ERR;
+ }
+ sr_dbg("Device returned %i bytes", ret);
+ devc->num_header_bytes += ret;
+ buf += blockOffset; //Skip to start Descriptor block
+
+ // Parse WaveDescriptor Header
+ memcpy(&descLength, buf + 36, 4); // Descriptor block length
+ memcpy(&dataLength, buf + 60, 4); // Data block length
+
+ devc->vdiv[channelIndex] = 2;
+ devc->vert_offset[channelIndex] = 0;
+ devc->blockHeaderSize = descLength + 15;
+ ret = dataLength;
+ sr_dbg("Received data block header: '%s' -> block length %d", buf, ret);
+ return ret;
+}
+
+SR_PRIV int siglent_sds_receive(int fd, int revents, void *cb_data)
+{
+ struct sr_dev_inst *sdi;
+ struct sr_scpi_dev_inst *scpi;
+ struct dev_context *devc;
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_analog analog;
+ struct sr_analog_encoding encoding;
+ struct sr_analog_meaning meaning;
+ struct sr_analog_spec spec;
+ struct sr_datafeed_logic logic;
+ int len, i;
+ struct sr_channel *ch;
+ gsize expected_data_bytes = 0;
+ char *memsize;
(void)fd;
if (!(devc = sdi->priv))
return TRUE;
- if (revents == G_IO_IN) {
- /* TODO */
+ scpi = sdi->conn;
+
+ if (!(revents == G_IO_IN || revents == 0))
+ return TRUE;
+
+ memsize = NULL;
+ if (sr_scpi_get_string(sdi->conn, "MSIZ?", &memsize) != SR_OK)
+ return SR_ERR;
+
+ switch (devc->wait_event) {
+ case WAIT_NONE:
+ break;
+ case WAIT_TRIGGER:
+ if (siglent_sds_trigger_wait(sdi) != SR_OK)
+ return TRUE;
+ if (siglent_sds_channel_start(sdi) != SR_OK)
+ return TRUE;
+ return TRUE;
+ case WAIT_BLOCK:
+ if (siglent_sds_channel_start(sdi) != SR_OK)
+ return TRUE;
+ break;
+ case WAIT_STOP:
+ if (siglent_sds_stop_wait(sdi) != SR_OK) {
+ return TRUE;
+ }
+ if (siglent_sds_channel_start(sdi) != SR_OK) {
+ return TRUE;
+ }
+ return TRUE;
+ default:
+ sr_err("BUG: Unknown event target encountered");
+ break;
+ }
+
+ ch = devc->channel_entry->data;
+
+ if (devc->num_block_bytes == 0) {
+
+ if (g_ascii_strcasecmp(memsize, "14M") == 0){
+ sr_err("Device memory depth is set to 14Mpts, so please be patient");
+ g_usleep(4900000); // Sleep for large memory set
+ }
+ sr_dbg("New block header expected");
+ len = siglent_sds_read_header(sdi, ch->index);
+ expected_data_bytes = len;
+ if (len == 0)
+ /* Still reading the header. */
+ return TRUE;
+ if (len == -1) {
+ sr_err("Read error, aborting capture.");
+ packet.type = SR_DF_FRAME_END;
+ sr_session_send(sdi, &packet);
+ sdi->driver->dev_acquisition_stop(sdi);
+ return TRUE;
+ }
+
+ if (devc->data_source == DATA_SOURCE_SCREEN
+ && (unsigned)len < expected_data_bytes) {
+ sr_dbg("Discarding short data block");
+ sr_scpi_read_data(scpi, (char *)devc->buffer, len + 1);
+ return TRUE;
+ }
+ devc->num_block_bytes = len;
+ devc->num_block_read = 0;
+ }
+
+ len = devc->num_block_bytes - devc->num_block_read;
+ if (len > ACQ_BUFFER_SIZE)
+ len = ACQ_BUFFER_SIZE;
+
+ /*Offset the data block buffer past the IEEE header and Description Header*/
+ devc->buffer += devc->blockHeaderSize;
+
+ if (len == -1) {
+ sr_err("Read error, aborting capture.");
+ packet.type = SR_DF_FRAME_END;
+ sr_session_send(sdi, &packet);
+ sdi->driver->dev_acquisition_stop(sdi);
+ return TRUE;
}
+ sr_dbg("Received %d bytes.", len);
+
+ devc->num_block_read += len;
+
+ if (ch->type == SR_CHANNEL_ANALOG) {
+ float vdiv = devc->vdiv[ch->index];
+ float offset = devc->vert_offset[ch->index];
+ GArray *float_data;
+ static GArray *data;
+ float voltage;
+ float vdivlog;
+ int digits;
+
+ data = g_array_sized_new(FALSE, FALSE, sizeof(uint8_t), len);
+ g_array_append_vals(data, devc->buffer, len);
+ float_data = g_array_new(FALSE, FALSE, sizeof(float));
+ for (i = 0; i < len; i++) {
+ voltage = (float)g_array_index(data, int8_t, i) / 25;
+ voltage = ((vdiv * voltage) - offset);
+ g_array_append_val(float_data, voltage);
+ }
+ vdivlog = log10f(vdiv);
+ digits = -(int) vdivlog + (vdivlog < 0.0);
+ sr_analog_init(&analog, &encoding, &meaning, &spec, digits);
+ analog.meaning->channels = g_slist_append(NULL, ch);
+ analog.num_samples = float_data->len;
+ analog.data = (float *)float_data->data;
+ analog.meaning->mq = SR_MQ_VOLTAGE;
+ analog.meaning->unit = SR_UNIT_VOLT;
+ analog.meaning->mqflags = 0;
+ packet.type = SR_DF_ANALOG;
+ packet.payload = &analog;
+ sr_session_send(sdi, &packet);
+ g_slist_free(analog.meaning->channels);
+ g_array_free(data, TRUE);
+ } else {
+ logic.length = len;
+ logic.unitsize = 1;
+ logic.data = devc->buffer;
+ packet.type = SR_DF_LOGIC;
+ packet.payload = &logic;
+ sr_session_send(sdi, &packet);
+ }
+
+ if (devc->num_block_read == devc->num_block_bytes) {
+ sr_dbg("Block has been completed");
+ /* Prepare for possible next block */
+ sr_dbg("Prepare for possible next block");
+ devc->num_header_bytes = 0;
+ devc->num_block_bytes = 0;
+ if (devc->data_source != DATA_SOURCE_SCREEN) {
+ siglent_sds_set_wait_event(devc, WAIT_BLOCK);
+ }
+ if (!sr_scpi_read_complete(scpi)) {
+ sr_err("Read should have been completed");
+ packet.type = SR_DF_FRAME_END;
+ sr_session_send(sdi, &packet);
+ sdi->driver->dev_acquisition_stop(sdi);
+ return TRUE;
+ }
+ devc->num_block_read = 0;
+ } else {
+ sr_dbg("%" PRIu64 " of %" PRIu64 " block bytes read",
+ devc->num_block_read, devc->num_block_bytes);
+ }
+ devc->num_channel_bytes += len;
+ if (devc->num_channel_bytes < expected_data_bytes) {
+ /* Don't have the full data for this channel yet, re-run. */
+ return TRUE;
+ }
+ if (devc->channel_entry->next) {
+ /* We got the frame for this channel, now get the next channel. */
+ devc->channel_entry = devc->channel_entry->next;
+ siglent_sds_channel_start(sdi);
+ } else {
+ /* Done with this frame. */
+ packet.type = SR_DF_FRAME_END;
+ sr_session_send(sdi, &packet);
+
+ if (++devc->num_frames == devc->limit_frames) {
+ /* Last frame, stop capture. */
+ sdi->driver->dev_acquisition_stop(sdi);
+ } else {
+ /* Get the next frame, starting with the first channel. */
+ devc->channel_entry = devc->enabled_channels;
+ siglent_sds_capture_start(sdi);
+
+ /* Start of next frame. */
+ packet.type = SR_DF_FRAME_BEGIN;
+ sr_session_send(sdi, &packet);
+ }
+ }
return TRUE;
}
+
+SR_PRIV int siglent_sds_get_dev_cfg(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ struct sr_channel *ch;
+ char *cmd;
+ unsigned int i;
+ int res;
+ char *response;
+ gchar **tokens;
+ int num_tokens;
+
+ devc = sdi->priv;
+
+ /* Analog channel state. */
+ for (i = 0; i < devc->model->analog_channels; i++) {
+ cmd = g_strdup_printf("C%i:TRA?", i + 1);
+ res = sr_scpi_get_bool(sdi->conn, cmd, &devc->analog_channels[i]);
+ g_free(cmd);
+ if (res != SR_OK)
+ return SR_ERR;
+ ch = g_slist_nth_data(sdi->channels, i);
+ ch->enabled = devc->analog_channels[i];
+ }
+ sr_dbg("Current analog channel state:");
+ for (i = 0; i < devc->model->analog_channels; i++)
+ sr_dbg("CH%d %s", i + 1, devc->analog_channels[i] ? "On" : "Off");
+
+ /* Digital channel state. */
+ if (devc->model->has_digital) {
+ gboolean status;
+
+ sr_dbg("Check Logic Analyzer channel state");
+ devc->la_enabled = FALSE;
+ cmd = g_strdup_printf("DGST?");
+ res = sr_scpi_get_bool(sdi->conn, cmd, &status);
+ g_free(cmd);
+ if (res != SR_OK)
+ return SR_ERR;
+ sr_dbg("Logic Analyzer status: %s", status ? "On" : "Off");
+ if (status) {
+ devc->la_enabled = TRUE;
+ for (i = 0; i < ARRAY_SIZE(devc->digital_channels); i++) {
+ cmd = g_strdup_printf("D%i:DGCH?", i);
+ res = sr_scpi_get_bool(sdi->conn, cmd, &devc->digital_channels[i]);
+ g_free(cmd);
+ if (res != SR_OK)
+ return SR_ERR;
+ ch = g_slist_nth_data(sdi->channels, i + devc->model->analog_channels);
+ ch->enabled = devc->digital_channels[i];
+ sr_dbg("D%d: %s", i, devc->digital_channels[i] ? "On" : "Off");
+ }
+ } else {
+ for (i = 0; i < ARRAY_SIZE(devc->digital_channels); i++) {
+ ch = g_slist_nth_data(sdi->channels, i + devc->model->analog_channels);
+ devc->digital_channels[i] = FALSE;
+ ch->enabled = devc->digital_channels[i];
+ sr_dbg("D%d: %s", i, devc->digital_channels[i] ? "On" : "Off");
+ }
+ }
+ }
+
+ /* Timebase. */
+ if (sr_scpi_get_float(sdi->conn, ":TDIV?", &devc->timebase) != SR_OK)
+ return SR_ERR;
+ sr_dbg("Current timebase %g", devc->timebase);
+
+ /* Probe attenuation. */
+ for (i = 0; i < devc->model->analog_channels; i++) {
+ cmd = g_strdup_printf("C%d:ATTN?", i + 1);
+ res = sr_scpi_get_float(sdi->conn, cmd, &devc->attenuation[i]);
+ g_free(cmd);
+ if (res != SR_OK)
+ return SR_ERR;
+ }
+ sr_dbg("Current probe attenuation:");
+ for (i = 0; i < devc->model->analog_channels; i++)
+ sr_dbg("CH%d %g", i + 1, devc->attenuation[i]);
+
+ /* Vertical gain and offset. */
+ if (siglent_sds_get_dev_cfg_vertical(sdi) != SR_OK)
+ return SR_ERR;
+
+ /* Coupling. */
+ for (i = 0; i < devc->model->analog_channels; i++) {
+ cmd = g_strdup_printf("C%d:CPL?", i + 1);
+ res = sr_scpi_get_string(sdi->conn, cmd, &devc->coupling[i]);
+ g_free(cmd);
+ if (res != SR_OK)
+ return SR_ERR;
+ }
+
+ sr_dbg("Current coupling:");
+ for (i = 0; i < devc->model->analog_channels; i++)
+ sr_dbg("CH%d %s", i + 1, devc->coupling[i]);
+
+ /* Trigger source. */
+ response = NULL;
+ tokens = NULL;
+ if (sr_scpi_get_string(sdi->conn, "TRSE?", &response) != SR_OK)
+ return SR_ERR;
+ tokens = g_strsplit(response, ",", 0);
+ for (num_tokens = 0; tokens[num_tokens] != NULL; num_tokens++);
+ if (num_tokens < 4) {
+ sr_dbg("IDN response not according to spec: %80.s.", response);
+ g_strfreev(tokens);
+ g_free(response);
+ return SR_ERR_DATA;
+ }
+ g_free(response);
+ devc->trigger_source = g_strstrip(g_strdup(tokens[2]));
+ sr_dbg("Current trigger source %s", devc->trigger_source);
+
+ /* TODO Horizontal trigger position. */
+
+ devc->horiz_triggerpos = 0;
+ sr_dbg("Current horizontal trigger position %g", devc->horiz_triggerpos);
+
+ /* Trigger slope. */
+ cmd = g_strdup_printf("%s:TRSL?", devc->trigger_source);
+ res = sr_scpi_get_string(sdi->conn, cmd, &devc->trigger_slope);
+ g_free(cmd);
+ if (res != SR_OK)
+ return SR_ERR;
+ sr_dbg("Current trigger slope %s", devc->trigger_slope);
+
+ /* Trigger level. */
+ cmd = g_strdup_printf("%s:TRLV?", devc->trigger_source);
+ res = sr_scpi_get_float(sdi->conn, cmd, &devc->trigger_level);
+ g_free(cmd);
+ if (res != SR_OK)
+ return SR_ERR;
+ sr_dbg("Current trigger level %g", devc->trigger_level);
+ return SR_OK;
+}
+
+SR_PRIV int siglent_sds_get_dev_cfg_vertical(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ char *cmd;
+ unsigned int i;
+ int res;
+
+ devc = sdi->priv;
+
+ /* Vertical gain. */
+ for (i = 0; i < devc->model->analog_channels; i++) {
+ cmd = g_strdup_printf("C%d:VDIV?", i + 1);
+ res = sr_scpi_get_float(sdi->conn, cmd, &devc->vdiv[i]);
+ g_free(cmd);
+ if (res != SR_OK)
+ return SR_ERR;
+ }
+ sr_dbg("Current vertical gain:");
+ for (i = 0; i < devc->model->analog_channels; i++)
+ sr_dbg("CH%d %g", i + 1, devc->vdiv[i]);
+
+ /* Vertical offset. */
+ for (i = 0; i < devc->model->analog_channels; i++) {
+ cmd = g_strdup_printf("C%d:OFST?", i + 1);
+ res = sr_scpi_get_float(sdi->conn, cmd, &devc->vert_offset[i]);
+ g_free(cmd);
+ if (res != SR_OK)
+ return SR_ERR;
+ }
+ sr_dbg("Current vertical offset:");
+ for (i = 0; i < devc->model->analog_channels; i++)
+ sr_dbg("CH%d %g", i + 1, devc->vert_offset[i]);
+
+ return SR_OK;
+}
+
+SR_PRIV int siglent_sds_get_dev_cfg_horizontal(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ char *cmd;
+ int res;
+ char *samplePointsString;
+ float samplerateScope;
+ float fvalue;
+ char *first, *concat;
+
+ devc = sdi->priv;
+ cmd = g_strdup_printf("SANU? C1");
+ res = sr_scpi_get_string(sdi->conn, cmd, &samplePointsString);
+ g_free(cmd);
+ if (res != SR_OK)
+ return SR_ERR;
+ if (strcasestr(samplePointsString, "Mpts") != NULL) {
+ samplePointsString[strlen(samplePointsString) - 4] = '\0';
+
+ if (strcasestr(samplePointsString, ".") != NULL) {
+ first = strtok(samplePointsString, ".");
+ concat = strcat(first, strtok(NULL, "."));
+ if (sr_atof_ascii(concat, &fvalue) != SR_OK || fvalue == 0.0) {
+ sr_dbg("Invalid float converted from scope response.");
+ return SR_ERR;
+ }
+ } else {
+ if (sr_atof_ascii(samplePointsString, &fvalue) != SR_OK || fvalue == 0.0) {
+ sr_dbg("Invalid float converted from scope response.");
+ return SR_ERR;
+ }
+ }
+ samplerateScope = fvalue * 100000;
+ } else {
+ samplePointsString[strlen(samplePointsString) - 4] = '\0';
+ if (sr_atof_ascii(samplePointsString, &fvalue) != SR_OK || fvalue == 0.0) {
+ sr_dbg("Invalid float converted from scope response.");
+ return SR_ERR;
+ }
+ samplerateScope = fvalue * 1000;
+ }
+ /* Get the Timebase. */
+ if (sr_scpi_get_float(sdi->conn, ":TDIV?", &devc->timebase) != SR_OK)
+ return SR_ERR;
+ sr_dbg("Current timebase %g", devc->timebase);
+ devc->sampleRate = samplerateScope / (devc->timebase * devc->model->series->num_horizontal_divs);
+ return SR_OK;
+}
projects / libsigrok.git / blobdiff