359 lines
10 KiB
C
359 lines
10 KiB
C
/*
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* This file is part of the libsigrok project.
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*
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* Copyright (C) 2017 Frank Stettner <frank-stettner@gmx.net>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include "scpi.h"
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#include "protocol.h"
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static const uint32_t scanopts[] = {
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SR_CONF_CONN,
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};
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static const uint32_t drvopts[] = {
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SR_CONF_MULTIMETER,
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};
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static const uint32_t devopts[] = {
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SR_CONF_CONTINUOUS,
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SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
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SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
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SR_CONF_MEASURED_QUANTITY | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
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SR_CONF_RANGE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
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};
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static const struct {
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enum sr_mq mq;
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enum sr_mqflag mqflag;
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} mqopts[] = {
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{SR_MQ_VOLTAGE, SR_MQFLAG_DC},
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{SR_MQ_VOLTAGE, SR_MQFLAG_AC},
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{SR_MQ_CURRENT, SR_MQFLAG_DC},
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{SR_MQ_CURRENT, SR_MQFLAG_AC},
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{SR_MQ_RESISTANCE, 0},
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{SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE},
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};
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static const struct {
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enum sr_mq mq;
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enum sr_mqflag mqflag;
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int range_exp;
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const char *range_str;
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} rangeopts[] = {
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/* -99 is a dummy exponent for auto ranging. */
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{SR_MQ_VOLTAGE, SR_MQFLAG_DC, -99, "Auto"},
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{SR_MQ_VOLTAGE, SR_MQFLAG_DC, -2, "30mV"},
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{SR_MQ_VOLTAGE, SR_MQFLAG_DC, -1, "300mV"},
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{SR_MQ_VOLTAGE, SR_MQFLAG_DC, 0, "3V"},
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{SR_MQ_VOLTAGE, SR_MQFLAG_DC, 1, "30V"},
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{SR_MQ_VOLTAGE, SR_MQFLAG_DC, 2, "300V"},
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/* -99 is a dummy exponent for auto ranging. */
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{SR_MQ_VOLTAGE, SR_MQFLAG_AC, -99, "Auto"},
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{SR_MQ_VOLTAGE, SR_MQFLAG_AC, -1, "300mV"},
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{SR_MQ_VOLTAGE, SR_MQFLAG_AC, 0, "3V"},
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{SR_MQ_VOLTAGE, SR_MQFLAG_AC, 1, "30V"},
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{SR_MQ_VOLTAGE, SR_MQFLAG_AC, 2, "300V"},
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/* -99 is a dummy exponent for auto ranging. */
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{SR_MQ_CURRENT, SR_MQFLAG_DC, -99, "Auto"},
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{SR_MQ_CURRENT, SR_MQFLAG_DC, -1, "300mV"},
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{SR_MQ_CURRENT, SR_MQFLAG_DC, 0, "3V"},
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/* -99 is a dummy exponent for auto ranging. */
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{SR_MQ_CURRENT, SR_MQFLAG_AC, -99, "Auto"},
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{SR_MQ_CURRENT, SR_MQFLAG_AC, -1, "300mV"},
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{SR_MQ_CURRENT, SR_MQFLAG_AC, 0, "3V"},
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/* -99 is a dummy exponent for auto ranging. */
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{SR_MQ_RESISTANCE, 0, -99, "Auto"},
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{SR_MQ_RESISTANCE, 0, 1, "30"},
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{SR_MQ_RESISTANCE, 0, 2, "300"},
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{SR_MQ_RESISTANCE, 0, 3, "3k"},
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{SR_MQ_RESISTANCE, 0, 4, "30k"},
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{SR_MQ_RESISTANCE, 0, 5, "300k"},
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{SR_MQ_RESISTANCE, 0, 6, "3M"},
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{SR_MQ_RESISTANCE, 0, 7, "30M"},
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/* -99 is a dummy exponent for auto ranging. */
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{SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, -99, "Auto"},
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{SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, 1, "30R"},
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{SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, 2, "300R"},
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{SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, 3, "3kR"},
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{SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, 4, "30kR"},
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{SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, 5, "300kR"},
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{SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, 6, "3MR"},
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{SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, 7, "30MR"},
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};
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static struct sr_dev_driver hp_3478a_driver_info;
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static int create_front_channel(struct sr_dev_inst *sdi, int chan_idx)
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{
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struct sr_channel *channel;
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struct channel_context *chanc;
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chanc = g_malloc(sizeof(*chanc));
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chanc->location = TERMINAL_FRONT;
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channel = sr_channel_new(sdi, chan_idx++, SR_CHANNEL_ANALOG, TRUE, "P1");
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channel->priv = chanc;
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return chan_idx;
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}
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static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)
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{
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int ret;
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struct sr_dev_inst *sdi;
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struct dev_context *devc;
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sdi = g_malloc0(sizeof(struct sr_dev_inst));
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sdi->vendor = g_strdup("Hewlett-Packard");
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sdi->model = g_strdup("3478A");
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sdi->conn = scpi;
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sdi->driver = &hp_3478a_driver_info;
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sdi->inst_type = SR_INST_SCPI;
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devc = g_malloc0(sizeof(struct dev_context));
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sr_sw_limits_init(&devc->limits);
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sdi->priv = devc;
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/* Get actual status (function, digits, ...). */
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ret = hp_3478a_get_status_bytes(sdi);
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if (ret != SR_OK)
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return NULL;
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create_front_channel(sdi, 0);
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return sdi;
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}
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static GSList *scan(struct sr_dev_driver *di, GSList *options)
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{
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return sr_scpi_scan(di->context, options, probe_device);
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}
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static int dev_open(struct sr_dev_inst *sdi)
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{
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return sr_scpi_open(sdi->conn);
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}
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static int dev_close(struct sr_dev_inst *sdi)
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{
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return sr_scpi_close(sdi->conn);
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}
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static int config_get(uint32_t key, GVariant **data,
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const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
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{
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struct dev_context *devc;
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int ret;
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GVariant *arr[2];
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unsigned int i;
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const char *range_str;
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(void)cg;
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devc = sdi->priv;
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switch (key) {
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case SR_CONF_LIMIT_SAMPLES:
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case SR_CONF_LIMIT_MSEC:
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return sr_sw_limits_config_get(&devc->limits, key, data);
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case SR_CONF_MEASURED_QUANTITY:
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ret = hp_3478a_get_status_bytes(sdi);
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if (ret != SR_OK)
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return ret;
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arr[0] = g_variant_new_uint32(devc->measurement_mq);
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arr[1] = g_variant_new_uint64(devc->measurement_mq_flags);
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*data = g_variant_new_tuple(arr, 2);
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break;
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case SR_CONF_RANGE:
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ret = hp_3478a_get_status_bytes(sdi);
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if (ret != SR_OK)
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return ret;
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range_str = "Auto";
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for (i = 0; i < ARRAY_SIZE(rangeopts); i++) {
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if (rangeopts[i].mq == devc->measurement_mq &&
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rangeopts[i].mqflag == devc->measurement_mq_flags &&
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rangeopts[i].range_exp == devc->range_exp) {
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range_str = rangeopts[i].range_str;
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break;
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}
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}
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*data = g_variant_new_string(range_str);
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break;
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default:
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return SR_ERR_NA;
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}
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return SR_OK;
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}
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static int config_set(uint32_t key, GVariant *data,
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const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
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{
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struct dev_context *devc;
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enum sr_mq mq;
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enum sr_mqflag mq_flags;
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GVariant *tuple_child;
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unsigned int i;
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const char *range_str;
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(void)cg;
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devc = sdi->priv;
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switch (key) {
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case SR_CONF_LIMIT_SAMPLES:
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case SR_CONF_LIMIT_MSEC:
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return sr_sw_limits_config_set(&devc->limits, key, data);
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case SR_CONF_MEASURED_QUANTITY:
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tuple_child = g_variant_get_child_value(data, 0);
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mq = g_variant_get_uint32(tuple_child);
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tuple_child = g_variant_get_child_value(data, 1);
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mq_flags = g_variant_get_uint64(tuple_child);
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g_variant_unref(tuple_child);
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return hp_3478a_set_mq(sdi, mq, mq_flags);
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case SR_CONF_RANGE:
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range_str = g_variant_get_string(data, NULL);
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for (i = 0; i < ARRAY_SIZE(rangeopts); i++) {
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if (rangeopts[i].mq == devc->measurement_mq &&
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rangeopts[i].mqflag == devc->measurement_mq_flags &&
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g_strcmp0(rangeopts[i].range_str, range_str) == 0) {
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return hp_3478a_set_range(sdi, rangeopts[i].range_exp);
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}
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}
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return SR_ERR_NA;
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default:
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return SR_ERR_NA;
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}
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return SR_OK;
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}
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static int config_list(uint32_t key, GVariant **data,
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const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
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{
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struct dev_context *devc;
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int ret;
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unsigned int i;
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GVariant *gvar, *arr[2];
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GVariantBuilder gvb;
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devc = sdi->priv;
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switch (key) {
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case SR_CONF_SCAN_OPTIONS:
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case SR_CONF_DEVICE_OPTIONS:
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return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
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case SR_CONF_MEASURED_QUANTITY:
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/*
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* TODO: move to std.c as
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* SR_PRIV GVariant *std_gvar_measured_quantities()
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*/
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g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
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for (i = 0; i < ARRAY_SIZE(mqopts); i++) {
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arr[0] = g_variant_new_uint32(mqopts[i].mq);
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arr[1] = g_variant_new_uint64(mqopts[i].mqflag);
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gvar = g_variant_new_tuple(arr, 2);
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g_variant_builder_add_value(&gvb, gvar);
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}
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*data = g_variant_builder_end(&gvb);
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break;
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case SR_CONF_RANGE:
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ret = hp_3478a_get_status_bytes(sdi);
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if (ret != SR_OK)
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return ret;
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g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
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for (i = 0; i < ARRAY_SIZE(rangeopts); i++) {
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if (rangeopts[i].mq == devc->measurement_mq &&
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rangeopts[i].mqflag == devc->measurement_mq_flags) {
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g_variant_builder_add(&gvb, "s", rangeopts[i].range_str);
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}
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}
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*data = g_variant_builder_end(&gvb);
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break;
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default:
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return SR_ERR_NA;
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}
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return SR_OK;
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}
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static int dev_acquisition_start(const struct sr_dev_inst *sdi)
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{
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struct sr_scpi_dev_inst *scpi;
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struct dev_context *devc;
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scpi = sdi->conn;
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devc = sdi->priv;
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sr_sw_limits_acquisition_start(&devc->limits);
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std_session_send_df_header(sdi);
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/*
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* NOTE: For faster readings, there are some things one can do:
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* - Turn off the display: sr_scpi_send(scpi, "D3SIGROK").
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* - Set the line frequency to 60Hz via switch (back of the unit).
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* - Set to 3.5 digits measurement (add config key SR_CONF_DIGITS).
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*/
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/* Set to internal trigger. */
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sr_scpi_send(scpi, "T1");
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/* Get device status. */
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hp_3478a_get_status_bytes(sdi);
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return sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 100,
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hp_3478a_receive_data, (void *)sdi);
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}
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static int dev_acquisition_stop(struct sr_dev_inst *sdi)
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{
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struct sr_scpi_dev_inst *scpi;
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scpi = sdi->conn;
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sr_scpi_source_remove(sdi->session, scpi);
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std_session_send_df_end(sdi);
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/* Set to internal trigger. */
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sr_scpi_send(scpi, "T1");
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/* Turn on display. */
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sr_scpi_send(scpi, "D1");
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return SR_OK;
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}
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static struct sr_dev_driver hp_3478a_driver_info = {
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.name = "hp-3478a",
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.longname = "HP 3478A",
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.api_version = 1,
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.init = std_init,
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.cleanup = std_cleanup,
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.scan = scan,
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.dev_list = std_dev_list,
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.dev_clear = std_dev_clear,
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.config_get = config_get,
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.config_set = config_set,
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.config_list = config_list,
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.dev_open = dev_open,
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.dev_close = dev_close,
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.dev_acquisition_start = dev_acquisition_start,
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.dev_acquisition_stop = dev_acquisition_stop,
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.context = NULL,
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};
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SR_REGISTER_DEV_DRIVER(hp_3478a_driver_info);
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