* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <config.h>
+#include <math.h>
+#include <stdlib.h>
+#include "scpi.h"
#include "protocol.h"
static const char *hameg_scpi_dialect[] = {
{ 2, 1 },
{ 5, 1 },
{ 10, 1 },
+ { 20, 1 },
+ { 50, 1 },
};
static const char *scope_analog_channel_names[] = {
static const struct scope_config scope_models[] = {
{
- .name = {"HMO722", "HMO1022", "HMO1522", "HMO2022", NULL},
+ /* HMO2522/3032/3042/3052 support 16 digital channels but they're not supported yet. */
+ .name = {"HMO722", "HMO1022", "HMO1522", "HMO2022", "HMO2522",
+ "HMO3032", "HMO3042", "HMO3052", NULL},
.analog_channels = 2,
.digital_channels = 8,
.digital_pods = 1,
.scpi_dialect = &hameg_scpi_dialect,
},
{
- .name = {"HMO724", "HMO1024", "HMO1524", "HMO2024", NULL},
+ /* HMO2524/3034/3044/3054 support 16 digital channels but they're not supported yet. */
+ .name = {"HMO724", "HMO1024", "HMO1524", "HMO2024", "HMO2524",
+ "HMO3034", "HMO3044", "HMO3054", NULL},
.analog_channels = 4,
.digital_channels = 8,
.digital_pods = 1,
unsigned int i;
char *tmp;
- for (i = 0; i < config->analog_channels; ++i) {
+ 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)",
tmp, state->analog_channels[i].vertical_offset);
}
- for (i = 0; i < config->digital_channels; ++i) {
+ for (i = 0; i < config->digital_channels; i++) {
sr_info("State of digital channel %d -> %s", i,
state->digital_channels[i] ? "On" : "Off");
}
- for (i = 0; i < config->digital_pods; ++i) {
+ for (i = 0; i < config->digital_pods; i++) {
sr_info("State of digital POD %d -> %s", i,
state->digital_pods[i] ? "On" : "Off");
}
return SR_ERR;
}
- for (i = 0; (*array)[i]; ++i) {
+ for (i = 0; (*array)[i]; i++) {
if (!g_strcmp0(tmp, (*array)[i])) {
*result = i;
g_free(tmp);
return SR_OK;
}
+/**
+ * This function takes a value of the form "2.000E-03", converts it to a
+ * significand / factor pair and returns the index of an array where
+ * a matching pair was found.
+ *
+ * It's a bit convoluted because of floating-point issues. The value "10.00E-09"
+ * is parsed by g_ascii_strtod() as 0.000000009999999939, for example.
+ * Therefore it's easier to break the number up into two strings and handle
+ * them separately.
+ *
+ * @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)
+{
+ int i;
+ uint64_t f;
+ float s;
+ unsigned int s_int;
+ gchar ss[10], es[10];
+
+ memset(ss, 0, sizeof(ss));
+ memset(es, 0, sizeof(es));
+
+ strncpy(ss, value, 5);
+ strncpy(es, &(value[6]), 3);
+
+ if (sr_atof_ascii(ss, &s) != SR_OK)
+ return SR_ERR;
+ if (sr_atoi(es, &i) != SR_OK)
+ return SR_ERR;
+
+ /* Transform e.g. 10^-03 to 1000 as the array stores the inverse. */
+ f = pow(10, abs(i));
+
+ /*
+ * Adjust the significand/factor pair to make sure
+ * that f is a multiple of 1000.
+ */
+ while ((int)fmod(log10(f), 3) > 0) {
+ s *= 10;
+ f *= 10;
+ }
+
+ /* Truncate s to circumvent rounding errors. */
+ s_int = (unsigned int)s;
+
+ for (i = 0; i < array_len; i++) {
+ if ((s_int == array[i][0]) && (f == array[i][1])) {
+ *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;
- float tmp_float;
char command[MAX_COMMAND_SIZE];
+ char *tmp_str;
- for (i = 0; i < config->analog_channels; ++i) {
+ for (i = 0; i < config->analog_channels; i++) {
g_snprintf(command, sizeof(command),
(*config->scpi_dialect)[SCPI_CMD_GET_ANALOG_CHAN_STATE],
i + 1);
(*config->scpi_dialect)[SCPI_CMD_GET_VERTICAL_DIV],
i + 1);
- if (sr_scpi_get_float(scpi, command, &tmp_float) != SR_OK)
+ if (sr_scpi_get_string(scpi, command, &tmp_str) != SR_OK)
return SR_ERR;
- for (j = 0; j < config->num_vdivs; j++) {
- if (tmp_float == ((float) (*config->vdivs)[j][0] /
- (*config->vdivs)[j][1])) {
- state->analog_channels[i].vdiv = j;
- break;
- }
- }
- if (j == config->num_vdivs) {
+
+ if (array_float_get(tmp_str, hmo_vdivs, ARRAY_SIZE(hmo_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),
(*config->scpi_dialect)[SCPI_CMD_GET_VERTICAL_OFFSET],
i + 1);
unsigned int i;
char command[MAX_COMMAND_SIZE];
- for (i = 0; i < config->digital_channels; ++i) {
+ for (i = 0; i < config->digital_channels; i++) {
g_snprintf(command, sizeof(command),
(*config->scpi_dialect)[SCPI_CMD_GET_DIG_CHAN_STATE],
i);
return SR_ERR;
}
- for (i = 0; i < config->digital_pods; ++i) {
+ for (i = 0; i < config->digital_pods; i++) {
g_snprintf(command, sizeof(command),
(*config->scpi_dialect)[SCPI_CMD_GET_DIG_POD_STATE],
i + 1);
state = devc->model_state;
channel_found = FALSE;
- for (i = 0; i < config->analog_channels; ++i) {
+ for (i = 0; i < config->analog_channels; i++) {
if (state->analog_channels[i].state) {
g_snprintf(chan_name, sizeof(chan_name), "CHAN%d", i + 1);
g_snprintf(tmp_str, sizeof(tmp_str),
{
struct scope_state *state;
- if (!(state = g_try_malloc0(sizeof(struct scope_state))))
- return NULL;
-
- if (!(state->analog_channels = g_try_malloc0_n(config->analog_channels,
- sizeof(struct analog_channel_state))))
- goto fail;
-
- if (!(state->digital_channels = g_try_malloc0_n(
- config->digital_channels, sizeof(gboolean))))
- goto fail;
-
- if (!(state->digital_pods = g_try_malloc0_n(config->digital_pods,
- sizeof(gboolean))))
- goto fail;
+ state = g_malloc0(sizeof(struct scope_state));
+ state->analog_channels = g_malloc0_n(config->analog_channels,
+ sizeof(struct analog_channel_state));
+ state->digital_channels = g_malloc0_n(
+ config->digital_channels, sizeof(gboolean));
+ state->digital_pods = g_malloc0_n(config->digital_pods,
+ sizeof(gboolean));
return state;
-
-fail:
- if (state->analog_channels)
- g_free(state->analog_channels);
- if (state->digital_channels)
- g_free(state->digital_channels);
- if (state->digital_pods)
- g_free(state->digital_pods);
- g_free(state);
-
- return NULL;
}
SR_PRIV void hmo_scope_state_free(struct scope_state *state)
}
/* Add digital channel groups. */
- for (i = 0; i < scope_models[model_index].digital_pods; ++i) {
+ for (i = 0; i < scope_models[model_index].digital_pods; i++) {
g_snprintf(tmp, 25, "POD%d", i);
devc->digital_groups[i] = g_malloc0(sizeof(struct sr_channel_group));
struct dev_context *devc;
struct sr_datafeed_packet packet;
GArray *data;
- struct sr_datafeed_analog analog;
+ struct sr_datafeed_analog_old analog;
struct sr_datafeed_logic logic;
(void)fd;
if (!(devc = sdi->priv))
return TRUE;
- if (revents == G_IO_IN) {
- ch = devc->current_channel->data;
-
- switch (ch->type) {
- case SR_CHANNEL_ANALOG:
- if (sr_scpi_get_floatv(sdi->conn, NULL, &data) != SR_OK) {
- if (data)
- g_array_free(data, TRUE);
+ if (revents != G_IO_IN)
+ return TRUE;
- return TRUE;
- }
+ ch = devc->current_channel->data;
- packet.type = SR_DF_FRAME_BEGIN;
- sr_session_send(sdi, &packet);
-
- analog.channels = g_slist_append(NULL, ch);
- analog.num_samples = data->len;
- analog.data = (float *) data->data;
- analog.mq = SR_MQ_VOLTAGE;
- analog.unit = SR_UNIT_VOLT;
- analog.mqflags = 0;
- packet.type = SR_DF_ANALOG;
- packet.payload = &analog;
- sr_session_send(cb_data, &packet);
- g_slist_free(analog.channels);
- g_array_free(data, TRUE);
- data = NULL;
- break;
- case SR_CHANNEL_LOGIC:
- if (sr_scpi_get_uint8v(sdi->conn, NULL, &data) != SR_OK) {
- if (data)
- g_free(data);
- return TRUE;
- }
+ switch (ch->type) {
+ case SR_CHANNEL_ANALOG:
+ if (sr_scpi_get_floatv(sdi->conn, NULL, &data) != SR_OK) {
+ if (data)
+ g_array_free(data, TRUE);
- packet.type = SR_DF_FRAME_BEGIN;
- sr_session_send(sdi, &packet);
-
- logic.length = data->len;
- logic.unitsize = 1;
- logic.data = data->data;
- packet.type = SR_DF_LOGIC;
- packet.payload = &logic;
- sr_session_send(cb_data, &packet);
- g_array_free(data, TRUE);
- data = NULL;
- break;
- default:
- sr_err("Invalid channel type.");
- break;
+ return TRUE;
}
- packet.type = SR_DF_FRAME_END;
+ packet.type = SR_DF_FRAME_BEGIN;
sr_session_send(sdi, &packet);
- if (devc->current_channel->next) {
- devc->current_channel = devc->current_channel->next;
- hmo_request_data(sdi);
- } else if (++devc->num_frames == devc->frame_limit) {
- sdi->driver->dev_acquisition_stop(sdi, cb_data);
- } else {
- devc->current_channel = devc->enabled_channels;
- hmo_request_data(sdi);
+ analog.channels = g_slist_append(NULL, ch);
+ analog.num_samples = data->len;
+ analog.data = (float *) data->data;
+ analog.mq = SR_MQ_VOLTAGE;
+ analog.unit = SR_UNIT_VOLT;
+ analog.mqflags = 0;
+ packet.type = SR_DF_ANALOG_OLD;
+ packet.payload = &analog;
+ sr_session_send(cb_data, &packet);
+ g_slist_free(analog.channels);
+ g_array_free(data, TRUE);
+ data = NULL;
+ break;
+ case SR_CHANNEL_LOGIC:
+ if (sr_scpi_get_uint8v(sdi->conn, NULL, &data) != SR_OK) {
+ g_free(data);
+ return TRUE;
}
+
+ packet.type = SR_DF_FRAME_BEGIN;
+ sr_session_send(sdi, &packet);
+
+ logic.length = data->len;
+ logic.unitsize = 1;
+ logic.data = data->data;
+ packet.type = SR_DF_LOGIC;
+ packet.payload = &logic;
+ sr_session_send(cb_data, &packet);
+ g_array_free(data, TRUE);
+ data = NULL;
+ break;
+ default:
+ sr_err("Invalid channel type.");
+ break;
+ }
+
+ packet.type = SR_DF_FRAME_END;
+ sr_session_send(sdi, &packet);
+
+ if (devc->current_channel->next) {
+ devc->current_channel = devc->current_channel->next;
+ hmo_request_data(sdi);
+ } else if (++devc->num_frames == devc->frame_limit) {
+ sdi->driver->dev_acquisition_stop(sdi, cb_data);
+ } else {
+ devc->current_channel = devc->enabled_channels;
+ hmo_request_data(sdi);
}
return TRUE;
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