*/
#include <config.h>
+#include <math.h>
+#include <stdlib.h>
+#include "scpi.h"
#include "protocol.h"
+struct lecroy_wavedesc_2_x {
+ uint16_t comm_type;
+ uint16_t comm_order; /* 1 - little endian */
+ uint32_t wave_descriptor_length;
+ uint32_t user_text_len;
+ uint32_t res_desc1;
+ uint32_t trigtime_array_length;
+ uint32_t ris_time1_array_length;
+ uint32_t res_array1;
+ uint32_t wave_array1_length;
+ uint32_t wave_array2_length;
+ uint32_t wave_array3_length;
+ uint32_t wave_array4_length;
+ char instrument_name[16];
+ uint32_t instrument_number;
+ char trace_label[16];
+ uint32_t reserved;
+ uint32_t wave_array_count;
+ uint32_t points_per_screen;
+ uint32_t first_valid_point;
+ uint32_t last_valid_point;
+ uint32_t first_point;
+ uint32_t sparsing_factor;
+ uint32_t segment_index;
+ uint32_t subarray_count;
+ uint32_t sweeps_per_acq;
+ uint16_t points_per_pair;
+ uint16_t pair_offset;
+ float vertical_gain;
+ float vertical_offset;
+ float max_value;
+ float min_value;
+ uint16_t nominal_bits;
+ uint16_t nom_subarray_count;
+ float horiz_interval;
+ double horiz_offset;
+ double pixel_offset;
+ char vertunit[48];
+ char horunit[48];
+ uint32_t reserved1;
+ double trigger_time;
+} __attribute__((packed));
+
+struct lecroy_wavedesc {
+ char descriptor_name[16];
+ char template_name[16];
+ union {
+ struct lecroy_wavedesc_2_x version_2_x;
+ };
+} __attribute__((packed));
+
+static const char *coupling_options[] = {
+ "A1M", // AC with 1 MOhm termination
+ "D50", // DC with 50 Ohm termination
+ "D1M", // DC with 1 MOhm termination
+ "GND",
+ "OVL",
+};
+
+static const char *scope_trigger_slopes[] = {
+ "POS", "NEG",
+};
+
+static const char *trigger_sources[] = {
+ "C1", "C2", "C3", "C4", "LINE", "EXT",
+};
+
+static const uint64_t timebases[][2] = {
+ /* picoseconds */
+ { 20, 1000000000000 },
+ { 50, 1000000000000 },
+ { 100, 1000000000000 },
+ { 200, 1000000000000 },
+ { 500, 1000000000000 },
+ /* nanoseconds */
+ { 1, 1000000000 },
+ { 2, 1000000000 },
+ { 5, 1000000000 },
+ { 10, 1000000000 },
+ { 20, 1000000000 },
+ { 50, 1000000000 },
+ { 100, 1000000000 },
+ { 200, 1000000000 },
+ { 500, 1000000000 },
+ /* microseconds */
+ { 1, 1000000 },
+ { 2, 1000000 },
+ { 5, 1000000 },
+ { 10, 1000000 },
+ { 20, 1000000 },
+ { 50, 1000000 },
+ { 100, 1000000 },
+ { 200, 1000000 },
+ { 500, 1000000 },
+ /* milliseconds */
+ { 1, 1000 },
+ { 2, 1000 },
+ { 5, 1000 },
+ { 10, 1000 },
+ { 20, 1000 },
+ { 50, 1000 },
+ { 100, 1000 },
+ { 200, 1000 },
+ { 500, 1000 },
+ /* seconds */
+ { 1, 1 },
+ { 2, 1 },
+ { 5, 1 },
+ { 10, 1 },
+ { 20, 1 },
+ { 50, 1 },
+ { 100, 1 },
+ { 200, 1 },
+ { 500, 1 },
+ { 1000, 1 },
+};
+
+static const uint64_t vdivs[][2] = {
+ /* millivolts */
+ { 1, 1000 },
+ { 2, 1000 },
+ { 5, 1000 },
+ { 10, 1000 },
+ { 20, 1000 },
+ { 50, 1000 },
+ { 100, 1000 },
+ { 200, 1000 },
+ { 500, 1000 },
+ /* volts */
+ { 1, 1 },
+ { 2, 1 },
+ { 5, 1 },
+ { 10, 1 },
+ { 20, 1 },
+ { 50, 1 },
+};
+
+static const char *scope_analog_channel_names[] = {
+ "CH1", "CH2", "CH3", "CH4",
+};
+
+static const struct scope_config scope_models[] = {
+ {
+ .name = { "WP7000", "WP7100", "WP7200", "WP7300" },
+
+ .analog_channels = 4,
+ .analog_names = &scope_analog_channel_names,
+
+ .coupling_options = &coupling_options,
+ .num_coupling_options = ARRAY_SIZE(coupling_options),
+
+ .trigger_sources = &trigger_sources,
+ .num_trigger_sources = ARRAY_SIZE(trigger_sources),
+
+ .trigger_slopes = &scope_trigger_slopes,
+ .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
+
+ .timebases = &timebases,
+ .num_timebases = ARRAY_SIZE(timebases),
+
+ .vdivs = &vdivs,
+ .num_vdivs = ARRAY_SIZE(vdivs),
+
+ .num_xdivs = 10,
+ .num_ydivs = 8,
+ },
+};
+
+static void scope_state_dump(const struct scope_config *config,
+ struct scope_state *state)
+{
+ unsigned int i;
+ char *tmp;
+
+ for (i = 0; i < config->analog_channels; i++) {
+ tmp = sr_voltage_string((*config->vdivs)[state->analog_channels[i].vdiv][0],
+ (*config->vdivs)[state->analog_channels[i].vdiv][1]);
+ sr_info("State of analog channel %d -> %s : %s (coupling) %s (vdiv) %2.2e (offset)",
+ i + 1, state->analog_channels[i].state ? "On" : "Off",
+ (*config->coupling_options)[state->analog_channels[i].coupling],
+ tmp, state->analog_channels[i].vertical_offset);
+ }
+
+ tmp = sr_period_string((*config->timebases)[state->timebase][0],
+ (*config->timebases)[state->timebase][1]);
+ sr_info("Current timebase: %s", tmp);
+ g_free(tmp);
+
+ tmp = sr_samplerate_string(state->sample_rate);
+ sr_info("Current samplerate: %s", tmp);
+ g_free(tmp);
+
+ sr_info("Current trigger: %s (source), %s (slope) %.2f (offset)",
+ (*config->trigger_sources)[state->trigger_source],
+ (*config->trigger_slopes)[state->trigger_slope],
+ state->horiz_triggerpos);
+}
+
+static int scope_state_get_array_option(const char *resp,
+ const char *(*array)[], unsigned int n, int *result)
+{
+ unsigned int i;
+
+ for (i = 0; i < n; i++) {
+ if (!g_strcmp0(resp, (*array)[i])) {
+ *result = i;
+ return SR_OK;
+ }
+ }
+
+ return SR_ERR;
+}
+
+/**
+ * This function takes a value of the form "2.000E-03" and returns the index
+ * of an array where a matching pair was found.
+ *
+ * @param value The string to be parsed.
+ * @param array The array of s/f pairs.
+ * @param array_len The number of pairs in the array.
+ * @param result The index at which a matching pair was found.
+ *
+ * @return SR_ERR on any parsing error, SR_OK otherwise.
+ */
+static int array_float_get(gchar *value, const uint64_t array[][2],
+ int array_len, unsigned int *result)
+{
+ struct sr_rational rval;
+ struct sr_rational aval;
+
+ if (sr_parse_rational(value, &rval) != SR_OK)
+ return SR_ERR;
+
+ for (int i = 0; i < array_len; i++) {
+ sr_rational_set(&aval, array[i][0], array[i][1]);
+ if (sr_rational_eq(&rval, &aval)) {
+ *result = i;
+ return SR_OK;
+ }
+ }
+
+ return SR_ERR;
+}
+
+static int analog_channel_state_get(struct sr_scpi_dev_inst *scpi,
+ const struct scope_config *config,
+ struct scope_state *state)
+{
+ unsigned int i, j;
+ char command[MAX_COMMAND_SIZE];
+ char *tmp_str;
+
+ for (i = 0; i < config->analog_channels; i++) {
+ g_snprintf(command, sizeof(command), "C%d:TRACE?", i + 1);
+
+ if (sr_scpi_get_bool(scpi, command,
+ &state->analog_channels[i].state) != SR_OK)
+ return SR_ERR;
+
+ g_snprintf(command, sizeof(command), "C%d:VDIV?", i + 1);
+
+ if (sr_scpi_get_string(scpi, command, &tmp_str) != SR_OK)
+ return SR_ERR;
+
+ if (array_float_get(tmp_str, ARRAY_AND_SIZE(vdivs), &j) != SR_OK) {
+ g_free(tmp_str);
+ sr_err("Could not determine array index for vertical div scale.");
+ return SR_ERR;
+ }
+
+ g_free(tmp_str);
+ state->analog_channels[i].vdiv = j;
+
+ g_snprintf(command, sizeof(command), "C%d:OFFSET?", i + 1);
+
+ if (sr_scpi_get_float(scpi, command, &state->analog_channels[i].vertical_offset) != SR_OK)
+ return SR_ERR;
+
+ g_snprintf(command, sizeof(command), "C%d:COUPLING?", i + 1);
+
+ if (sr_scpi_get_string(scpi, command, &tmp_str) != SR_OK)
+ return SR_ERR;
+
+
+ if (scope_state_get_array_option(tmp_str, config->coupling_options,
+ config->num_coupling_options,
+ &state->analog_channels[i].coupling) != SR_OK)
+ return SR_ERR;
+
+ g_free(tmp_str);
+ }
+
+ return SR_OK;
+}
+
+SR_PRIV int lecroy_xstream_update_sample_rate(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ struct scope_state *state;
+ const struct scope_config *config;
+ float memsize, timediv;
+
+ devc = sdi->priv;
+ state = devc->model_state;
+ config = devc->model_config;
+
+ if (sr_scpi_get_float(sdi->conn, "MEMORY_SIZE?", &memsize) != SR_OK)
+ return SR_ERR;
+
+ if (sr_scpi_get_float(sdi->conn, "TIME_DIV?", &timediv) != SR_OK)
+ return SR_ERR;
+
+ state->sample_rate = 1 / ((timediv * config->num_xdivs) / memsize);
+
+ return SR_OK;
+}
+
+SR_PRIV int lecroy_xstream_state_get(struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ struct scope_state *state;
+ const struct scope_config *config;
+ unsigned int i;
+ char *tmp_str, *tmp_str2, *tmpp, *p, *key;
+ char command[MAX_COMMAND_SIZE];
+ char *trig_source = NULL;
+
+ devc = sdi->priv;
+ config = devc->model_config;
+ state = devc->model_state;
+
+ sr_info("Fetching scope state");
+
+ if (analog_channel_state_get(sdi->conn, config, state) != SR_OK)
+ return SR_ERR;
+
+ if (sr_scpi_get_string(sdi->conn, "TIME_DIV?", &tmp_str) != SR_OK)
+ return SR_ERR;
+
+ if (array_float_get(tmp_str, ARRAY_AND_SIZE(timebases), &i) != SR_OK) {
+ g_free(tmp_str);
+ sr_err("Could not determine array index for timbase scale.");
+ return SR_ERR;
+ }
+ g_free(tmp_str);
+ state->timebase = i;
+
+ if (sr_scpi_get_string(sdi->conn, "TRIG_SELECT?", &tmp_str) != SR_OK)
+ return SR_ERR;
+
+ key = tmpp = NULL;
+ tmp_str2 = tmp_str;
+ i = 0;
+ while ((p = strtok_r(tmp_str2, ",", &tmpp))) {
+ tmp_str2 = NULL;
+ if (i == 0) {
+ /* trigger type */
+ } else if (i & 1) {
+ key = p;
+ /* key */
+ } else if (!(i & 1)) {
+ if (!strcmp(key, "SR"))
+ trig_source = p;
+ }
+ i++;
+ }
+
+ if (!trig_source || scope_state_get_array_option(trig_source, config->trigger_sources, config->num_trigger_sources, &state->trigger_source) != SR_OK)
+ return SR_ERR;
+
+ g_snprintf(command, sizeof(command), "%s:TRIG_SLOPE?", trig_source);
+ if (sr_scpi_get_string(sdi->conn, command, &tmp_str) != SR_OK)
+ return SR_ERR;
+
+ if (scope_state_get_array_option(tmp_str,
+ config->trigger_slopes, config->num_trigger_slopes, &state->trigger_slope) != SR_OK)
+ return SR_ERR;
+
+ if (sr_scpi_get_float(sdi->conn, "TRIG_DELAY?", &state->horiz_triggerpos) != SR_OK)
+ return SR_ERR;
+
+ if (lecroy_xstream_update_sample_rate(sdi) != SR_OK)
+ return SR_ERR;
+
+ sr_info("Fetching finished.");
+
+ scope_state_dump(config, state);
+
+ return SR_OK;
+}
+
+static struct scope_state *scope_state_new(const struct scope_config *config)
+{
+ struct scope_state *state;
+
+ state = g_malloc0(sizeof(struct scope_state));
+ state->analog_channels = g_malloc0_n(config->analog_channels,
+ sizeof(struct analog_channel_state));
+ return state;
+}
+
+SR_PRIV void lecroy_xstream_state_free(struct scope_state *state)
+{
+ g_free(state->analog_channels);
+ g_free(state);
+}
+
+SR_PRIV int lecroy_xstream_init_device(struct sr_dev_inst *sdi)
+{
+ char command[MAX_COMMAND_SIZE];
+ int model_index;
+ unsigned int i, j;
+ struct sr_channel *ch;
+ struct dev_context *devc;
+ gboolean channel_enabled;
+
+ devc = sdi->priv;
+ model_index = -1;
+
+ /* Find the exact model. */
+ for (i = 0; i < ARRAY_SIZE(scope_models); i++) {
+ for (j = 0; scope_models[i].name[j]; j++) {
+ if (!strcmp(sdi->model, scope_models[i].name[j])) {
+ model_index = i;
+ break;
+ }
+ }
+ if (model_index != -1)
+ break;
+ }
+
+ if (model_index == -1) {
+ sr_dbg("Unsupported LeCroy device.");
+ return SR_ERR_NA;
+ }
+
+ /* Set the desired response and format modes. */
+ sr_scpi_send(sdi->conn, "COMM_HEADER OFF");
+ sr_scpi_send(sdi->conn, "COMM_FORMAT OFF,WORD,BIN");
+
+ devc->analog_groups = g_malloc0(sizeof(struct sr_channel_group*) *
+ scope_models[model_index].analog_channels);
+
+ /* Add analog channels. */
+ for (i = 0; i < scope_models[model_index].analog_channels; i++) {
+ g_snprintf(command, sizeof(command), "C%d:TRACE?", i + 1);
+
+ if (sr_scpi_get_bool(sdi->conn, command, &channel_enabled) != SR_OK)
+ return SR_ERR;
+
+ g_snprintf(command, sizeof(command), "C%d:VDIV?", i + 1);
+
+ ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, channel_enabled,
+ (*scope_models[model_index].analog_names)[i]);
+
+ devc->analog_groups[i] = g_malloc0(sizeof(struct sr_channel_group));
+
+ devc->analog_groups[i]->name = g_strdup(
+ (char *)(*scope_models[model_index].analog_names)[i]);
+ devc->analog_groups[i]->channels = g_slist_append(NULL, ch);
+
+ sdi->channel_groups = g_slist_append(sdi->channel_groups,
+ devc->analog_groups[i]);
+ }
+
+ devc->model_config = &scope_models[model_index];
+ devc->frame_limit = 0;
+
+ if (!(devc->model_state = scope_state_new(devc->model_config)))
+ return SR_ERR_MALLOC;
+
+ return SR_OK;
+}
+
+static int lecroy_waveform_2_x_to_analog(GByteArray *data,
+ struct lecroy_wavedesc *desc,
+ struct sr_datafeed_analog *analog)
+{
+ struct sr_analog_encoding *encoding = analog->encoding;
+ struct sr_analog_meaning *meaning = analog->meaning;
+ struct sr_analog_spec *spec = analog->spec;
+ float *data_float;
+ int16_t *waveform_data;
+ unsigned int i, num_samples;
+
+ data_float = g_malloc(desc->version_2_x.wave_array_count * sizeof(float));
+ num_samples = desc->version_2_x.wave_array_count;
+
+ waveform_data = (int16_t *)(data->data +
+ + desc->version_2_x.wave_descriptor_length
+ + desc->version_2_x.user_text_len);
+
+ for (i = 0; i < num_samples; i++)
+ data_float[i] = (float)waveform_data[i]
+ * desc->version_2_x.vertical_gain
+ + desc->version_2_x.vertical_offset;
+
+ analog->data = data_float;
+ analog->num_samples = num_samples;
+
+ encoding->unitsize = sizeof(float);
+ encoding->is_signed = TRUE;
+ encoding->is_float = TRUE;
+ encoding->is_bigendian = FALSE;
+ encoding->scale.p = 1;
+ encoding->scale.q = 1;
+ encoding->offset.p = 0;
+ encoding->offset.q = 1;
+
+ encoding->digits = 6;
+ encoding->is_digits_decimal = FALSE;
+
+ if (strcmp(desc->version_2_x.vertunit, "A")) {
+ meaning->mq = SR_MQ_CURRENT;
+ meaning->unit = SR_UNIT_AMPERE;
+ } else {
+ /* Default to voltage. */
+ meaning->mq = SR_MQ_VOLTAGE;
+ meaning->unit = SR_UNIT_VOLT;
+ }
+
+ meaning->mqflags = 0;
+ spec->spec_digits = 3;
+
+ return SR_OK;
+}
+
+static int lecroy_waveform_to_analog(GByteArray *data,
+ struct sr_datafeed_analog *analog)
+{
+ struct lecroy_wavedesc *desc;
+
+ if (data->len < sizeof(struct lecroy_wavedesc))
+ return SR_ERR;
+
+ desc = (struct lecroy_wavedesc *)data->data;
+
+ if (!strncmp(desc->template_name, "LECROY_2_2", 16) ||
+ !strncmp(desc->template_name, "LECROY_2_3", 16)) {
+ return lecroy_waveform_2_x_to_analog(data, desc, analog);
+ }
+
+ sr_err("Waveformat template '%.16s' not supported.",
+ desc->template_name);
+
+ return SR_ERR;
+}
+
SR_PRIV int lecroy_xstream_receive_data(int fd, int revents, void *cb_data)
{
- const struct sr_dev_inst *sdi;
+ struct sr_channel *ch;
+ struct sr_dev_inst *sdi;
struct dev_context *devc;
+ struct sr_datafeed_packet packet;
+ GByteArray *data;
+ struct sr_datafeed_analog analog;
+ struct sr_analog_encoding encoding;
+ struct sr_analog_meaning meaning;
+ struct sr_analog_spec spec;
+ char buf[8];
(void)fd;
+ (void)revents;
+
+ data = NULL;
if (!(sdi = cb_data))
return TRUE;
if (!(devc = sdi->priv))
return TRUE;
- if (revents == G_IO_IN) {
- /* TODO */
+ ch = devc->current_channel->data;
+
+ /*
+ * Send "frame begin" packet upon reception of data for the
+ * first enabled channel.
+ */
+ if (devc->current_channel == devc->enabled_channels) {
+ packet.type = SR_DF_FRAME_BEGIN;
+ sr_session_send(sdi, &packet);
+ }
+
+ if (ch->type != SR_CHANNEL_ANALOG)
+ return SR_ERR;
+
+ /* Pass on the received data of the channel(s). */
+ if (sr_scpi_read_data(sdi->conn, buf, 4) != 4) {
+ sr_err("Reading header failed.");
+ return TRUE;
+ }
+
+ if (sr_scpi_get_block(sdi->conn, NULL, &data) != SR_OK) {
+ if (data)
+ g_byte_array_free(data, TRUE);
+ return TRUE;
+ }
+
+ analog.encoding = &encoding;
+ analog.meaning = &meaning;
+ analog.spec = &spec;
+
+ if (lecroy_waveform_to_analog(data, &analog) != SR_OK)
+ return SR_ERR;
+
+ meaning.channels = g_slist_append(NULL, ch);
+ packet.payload = &analog;
+ packet.type = SR_DF_ANALOG;
+ sr_session_send(sdi, &packet);
+
+ g_byte_array_free(data, TRUE);
+ data = NULL;
+
+ g_slist_free(meaning.channels);
+ g_free(analog.data);
+
+ /*
+ * Advance to the next enabled channel. When data for all enabled
+ * channels was received, then flush potentially queued logic data,
+ * and send the "frame end" packet.
+ */
+ if (devc->current_channel->next) {
+ devc->current_channel = devc->current_channel->next;
+ lecroy_xstream_request_data(sdi);
+ return TRUE;
+ }
+
+ packet.type = SR_DF_FRAME_END;
+ sr_session_send(sdi, &packet);
+
+ /*
+ * End of frame was reached. Stop acquisition after the specified
+ * number of frames, or continue reception by starting over at
+ * the first enabled channel.
+ */
+ if (++devc->num_frames == devc->frame_limit) {
+ sr_dev_acquisition_stop(sdi);
+ } else {
+ devc->current_channel = devc->enabled_channels;
+ lecroy_xstream_request_data(sdi);
}
return TRUE;
projects / libsigrok.git / blobdiff