--- /dev/null
+/*
+ * This file is part of the libsigrok project.
+ *
+ * Copyright (C) 2017 Frank Stettner <frank-stettner@gmx.net>
+ *
+ * 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
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include "scpi.h"
+#include "protocol.h"
+
+static const uint32_t scanopts[] = {
+ SR_CONF_CONN,
+};
+
+static const uint32_t drvopts[] = {
+ SR_CONF_MULTIMETER,
+};
+
+static const uint32_t devopts[] = {
+ SR_CONF_CONTINUOUS,
+ SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
+ SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
+ SR_CONF_MEASURED_QUANTITY | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+};
+
+static const struct {
+ enum sr_mq mq;
+ enum sr_mqflag mqflag;
+} mqopts[] = {
+ {SR_MQ_VOLTAGE, SR_MQFLAG_DC},
+ {SR_MQ_VOLTAGE, SR_MQFLAG_DC | SR_MQFLAG_AUTORANGE},
+ {SR_MQ_VOLTAGE, SR_MQFLAG_AC | SR_MQFLAG_RMS},
+ {SR_MQ_VOLTAGE, SR_MQFLAG_AC | SR_MQFLAG_RMS | SR_MQFLAG_AUTORANGE},
+ {SR_MQ_CURRENT, SR_MQFLAG_DC},
+ {SR_MQ_CURRENT, SR_MQFLAG_DC | SR_MQFLAG_AUTORANGE},
+ {SR_MQ_CURRENT, SR_MQFLAG_AC | SR_MQFLAG_RMS},
+ {SR_MQ_CURRENT, SR_MQFLAG_AC | SR_MQFLAG_RMS | SR_MQFLAG_AUTORANGE},
+ {SR_MQ_RESISTANCE, 0},
+ {SR_MQ_RESISTANCE, 0 | SR_MQFLAG_AUTORANGE},
+ {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE},
+ {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE | SR_MQFLAG_AUTORANGE},
+};
+
+SR_PRIV struct sr_dev_driver hp_3478a_driver_info;
+
+static int create_front_channel(struct sr_dev_inst *sdi, int chan_idx)
+{
+ struct sr_channel *channel;
+ struct channel_context *chanc;
+
+ chanc = g_malloc(sizeof(*chanc));
+ chanc->location = TERMINAL_FRONT;
+
+ channel = sr_channel_new(sdi, chan_idx++, SR_CHANNEL_ANALOG, TRUE, "P1");
+ channel->priv = chanc;
+
+ return chan_idx;
+}
+
+static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)
+{
+ int ret;
+ struct sr_dev_inst *sdi;
+ struct dev_context *devc;
+
+ sdi = g_malloc0(sizeof(struct sr_dev_inst));
+ sdi->vendor = g_strdup("Hewlett-Packard");
+ sdi->model = g_strdup("3478A");
+ sdi->conn = scpi;
+ sdi->driver = &hp_3478a_driver_info;
+ sdi->inst_type = SR_INST_SCPI;
+
+ devc = g_malloc0(sizeof(struct dev_context));
+ sr_sw_limits_init(&devc->limits);
+ sdi->priv = devc;
+
+ /* Get actual status (function, digits, ...). */
+ ret = hp_3478a_get_status_bytes(sdi);
+ if (ret != SR_OK)
+ return NULL;
+
+ create_front_channel(sdi, 0);
+
+ return sdi;
+}
+
+static GSList *scan(struct sr_dev_driver *di, GSList *options)
+{
+ return sr_scpi_scan(di->context, options, probe_device);
+}
+
+static int dev_open(struct sr_dev_inst *sdi)
+{
+ return sr_scpi_open(sdi->conn);
+}
+
+static int dev_close(struct sr_dev_inst *sdi)
+{
+ return sr_scpi_close(sdi->conn);
+}
+
+static int config_get(uint32_t key, GVariant **data,
+ const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
+{
+ struct dev_context *devc;
+ int ret;
+ GVariant *arr[2];
+
+ (void)cg;
+
+ devc = sdi->priv;
+
+ switch (key) {
+ case SR_CONF_LIMIT_SAMPLES:
+ case SR_CONF_LIMIT_MSEC:
+ return sr_sw_limits_config_get(&devc->limits, key, data);
+ case SR_CONF_MEASURED_QUANTITY:
+ ret = hp_3478a_get_status_bytes(sdi);
+ if (ret != SR_OK)
+ return ret;
+ arr[0] = g_variant_new_uint32(devc->measurement_mq);
+ arr[1] = g_variant_new_uint64(devc->measurement_mq_flags);
+ *data = g_variant_new_tuple(arr, 2);
+ break;
+ default:
+ return SR_ERR_NA;
+ }
+
+ return SR_OK;
+}
+
+static int config_set(uint32_t key, GVariant *data,
+ const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
+{
+ struct dev_context *devc;
+ enum sr_mq mq;
+ enum sr_mqflag mq_flags;
+ GVariant *tuple_child;
+
+ (void)cg;
+
+ devc = sdi->priv;
+
+ switch (key) {
+ case SR_CONF_LIMIT_SAMPLES:
+ case SR_CONF_LIMIT_MSEC:
+ return sr_sw_limits_config_set(&devc->limits, key, data);
+ case SR_CONF_MEASURED_QUANTITY:
+ tuple_child = g_variant_get_child_value(data, 0);
+ mq = g_variant_get_uint32(tuple_child);
+ tuple_child = g_variant_get_child_value(data, 1);
+ mq_flags = g_variant_get_uint64(tuple_child);
+ g_variant_unref(tuple_child);
+ return hp_3478a_set_mq(sdi, mq, mq_flags);
+ default:
+ return SR_ERR_NA;
+ }
+
+ return SR_OK;
+}
+
+static int config_list(uint32_t key, GVariant **data,
+ const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
+{
+ unsigned int i;
+ GVariant *gvar, *arr[2];
+ GVariantBuilder gvb;
+
+ switch (key) {
+ case SR_CONF_SCAN_OPTIONS:
+ case SR_CONF_DEVICE_OPTIONS:
+ return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
+ case SR_CONF_MEASURED_QUANTITY:
+ /*
+ * TODO: move to std.c as
+ * SR_PRIV GVariant *std_gvar_measured_quantities()
+ */
+ g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
+ for (i = 0; i < ARRAY_SIZE(mqopts); i++) {
+ arr[0] = g_variant_new_uint32(mqopts[i].mq);
+ arr[1] = g_variant_new_uint64(mqopts[i].mqflag);
+ gvar = g_variant_new_tuple(arr, 2);
+ g_variant_builder_add_value(&gvb, gvar);
+ }
+ *data = g_variant_builder_end(&gvb);
+ break;
+ default:
+ return SR_ERR_NA;
+ }
+
+ return SR_OK;
+}
+
+static int dev_acquisition_start(const struct sr_dev_inst *sdi)
+{
+ struct sr_scpi_dev_inst *scpi;
+ struct dev_context *devc;
+
+ scpi = sdi->conn;
+ devc = sdi->priv;
+
+ sr_sw_limits_acquisition_start(&devc->limits);
+ std_session_send_df_header(sdi);
+
+ /*
+ * NOTE: For faster readings, there are some things one can do:
+ * - Turn off the display: sr_scpi_send(scpi, "D3SIGROK").
+ * - Set the line frequency to 60Hz via switch (back of the unit).
+ * - Set to 3.5 digits measurement (add config key SR_CONF_DIGITS).
+ */
+
+ /* Set to internal trigger. */
+ sr_scpi_send(scpi, "T1");
+ /* Get device status. */
+ hp_3478a_get_status_bytes(sdi);
+
+ return sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 100,
+ hp_3478a_receive_data, (void *)sdi);
+}
+
+static int dev_acquisition_stop(struct sr_dev_inst *sdi)
+{
+ struct sr_scpi_dev_inst *scpi;
+
+ scpi = sdi->conn;
+
+ sr_scpi_source_remove(sdi->session, scpi);
+ std_session_send_df_end(sdi);
+
+ /* Set to internal trigger. */
+ sr_scpi_send(scpi, "T1");
+ /* Turn on display. */
+ sr_scpi_send(scpi, "D1");
+
+ return SR_OK;
+}
+
+SR_PRIV struct sr_dev_driver hp_3478a_driver_info = {
+ .name = "hp-3478a",
+ .longname = "HP 3478A",
+ .api_version = 1,
+ .init = std_init,
+ .cleanup = std_cleanup,
+ .scan = scan,
+ .dev_list = std_dev_list,
+ .dev_clear = std_dev_clear,
+ .config_get = config_get,
+ .config_set = config_set,
+ .config_list = config_list,
+ .dev_open = dev_open,
+ .dev_close = dev_close,
+ .dev_acquisition_start = dev_acquisition_start,
+ .dev_acquisition_stop = dev_acquisition_stop,
+ .context = NULL,
+};
+
+SR_REGISTER_DEV_DRIVER(hp_3478a_driver_info);
projects / libsigrok.git / blobdiff