*/
#include <config.h>
+#include "scpi.h"
#include "protocol.h"
-static GSList *scan(struct sr_dev_driver *di, GSList *options)
+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,
+ SR_CONF_RANGE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+ SR_CONF_DIGITS | 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_AC},
+ {SR_MQ_CURRENT, SR_MQFLAG_DC},
+ {SR_MQ_CURRENT, SR_MQFLAG_AC},
+ {SR_MQ_RESISTANCE, 0},
+ {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE},
+};
+
+static const struct {
+ enum sr_mq mq;
+ enum sr_mqflag mqflag;
+ int range_exp;
+ const char *range_str;
+} rangeopts[] = {
+ /* -99 is a dummy exponent for auto ranging. */
+ {SR_MQ_VOLTAGE, SR_MQFLAG_DC, -99, "Auto"},
+ {SR_MQ_VOLTAGE, SR_MQFLAG_DC, -2, "30mV"},
+ {SR_MQ_VOLTAGE, SR_MQFLAG_DC, -1, "300mV"},
+ {SR_MQ_VOLTAGE, SR_MQFLAG_DC, 0, "3V"},
+ {SR_MQ_VOLTAGE, SR_MQFLAG_DC, 1, "30V"},
+ {SR_MQ_VOLTAGE, SR_MQFLAG_DC, 2, "300V"},
+ /* -99 is a dummy exponent for auto ranging. */
+ {SR_MQ_VOLTAGE, SR_MQFLAG_AC, -99, "Auto"},
+ {SR_MQ_VOLTAGE, SR_MQFLAG_AC, -1, "300mV"},
+ {SR_MQ_VOLTAGE, SR_MQFLAG_AC, 0, "3V"},
+ {SR_MQ_VOLTAGE, SR_MQFLAG_AC, 1, "30V"},
+ {SR_MQ_VOLTAGE, SR_MQFLAG_AC, 2, "300V"},
+ /* -99 is a dummy exponent for auto ranging. */
+ {SR_MQ_CURRENT, SR_MQFLAG_DC, -99, "Auto"},
+ {SR_MQ_CURRENT, SR_MQFLAG_DC, -1, "300mV"},
+ {SR_MQ_CURRENT, SR_MQFLAG_DC, 0, "3V"},
+ /* -99 is a dummy exponent for auto ranging. */
+ {SR_MQ_CURRENT, SR_MQFLAG_AC, -99, "Auto"},
+ {SR_MQ_CURRENT, SR_MQFLAG_AC, -1, "300mV"},
+ {SR_MQ_CURRENT, SR_MQFLAG_AC, 0, "3V"},
+ /* -99 is a dummy exponent for auto ranging. */
+ {SR_MQ_RESISTANCE, 0, -99, "Auto"},
+ {SR_MQ_RESISTANCE, 0, 1, "30"},
+ {SR_MQ_RESISTANCE, 0, 2, "300"},
+ {SR_MQ_RESISTANCE, 0, 3, "3k"},
+ {SR_MQ_RESISTANCE, 0, 4, "30k"},
+ {SR_MQ_RESISTANCE, 0, 5, "300k"},
+ {SR_MQ_RESISTANCE, 0, 6, "3M"},
+ {SR_MQ_RESISTANCE, 0, 7, "30M"},
+ /* -99 is a dummy exponent for auto ranging. */
+ {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, -99, "Auto"},
+ {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, 1, "30R"},
+ {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, 2, "300R"},
+ {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, 3, "3kR"},
+ {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, 4, "30kR"},
+ {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, 5, "300kR"},
+ {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, 6, "3MR"},
+ {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, 7, "30MR"},
+};
+
+/** Available digits as strings. */
+static const char *digits[] = {
+ "3.5", "4.5", "5.5",
+};
+
+/** Mapping between devc->spec_digits and digits string. */
+static const char *digits_map[] = {
+ "", "", "", "", "3.5", "4.5", "5.5",
+};
+
+static struct sr_dev_driver hp_3478a_driver_info;
+
+static int create_front_channel(struct sr_dev_inst *sdi, int chan_idx)
{
- struct drv_context *drvc;
- GSList *devices;
+ struct sr_channel *channel;
+ struct channel_context *chanc;
- (void)options;
+ chanc = g_malloc(sizeof(*chanc));
+ chanc->location = TERMINAL_FRONT;
- devices = NULL;
- drvc = di->context;
- drvc->instances = NULL;
+ channel = sr_channel_new(sdi, chan_idx++, SR_CHANNEL_ANALOG, TRUE, "P1");
+ channel->priv = chanc;
- /* TODO: scan for devices, either based on a SR_CONF_CONN option
- * or on a USB scan. */
+ return chan_idx;
+}
- return devices;
+static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)
+{
+ int ret;
+ struct sr_dev_inst *sdi;
+ struct dev_context *devc;
+
+ /*
+ * The device cannot get identified by means of SCPI queries.
+ * Neither shall non-SCPI requests get emitted before reliable
+ * identification of the device. Assume that we only get here
+ * when user specs led us to believe it's safe to communicate
+ * to the expected kind of device.
+ */
+
+ 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 int dev_open(struct sr_dev_inst *sdi)
+static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
- (void)sdi;
+ const char *conn;
- /* TODO: get handle from sdi->conn and open it. */
+ /* Only scan for a device when conn= was specified. */
+ conn = NULL;
+ (void)sr_serial_extract_options(options, &conn, NULL);
+ if (!conn)
+ return NULL;
- return SR_OK;
+ return sr_scpi_scan(di->context, options, probe_device);
}
-static int dev_close(struct sr_dev_inst *sdi)
+static int dev_open(struct sr_dev_inst *sdi)
{
- (void)sdi;
-
- /* TODO: get handle from sdi->conn and close it. */
+ return sr_scpi_open(sdi->conn);
+}
- return SR_OK;
+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];
+ unsigned int i;
+ const char *range_str;
- (void)sdi;
- (void)data;
(void)cg;
- ret = SR_OK;
+ devc = sdi ? sdi->priv : NULL;
+
switch (key) {
- /* TODO */
+ 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;
+ case SR_CONF_RANGE:
+ ret = hp_3478a_get_status_bytes(sdi);
+ if (ret != SR_OK)
+ return ret;
+ range_str = "Auto";
+ for (i = 0; i < ARRAY_SIZE(rangeopts); i++) {
+ if (rangeopts[i].mq == devc->measurement_mq &&
+ rangeopts[i].mqflag == devc->measurement_mq_flags &&
+ rangeopts[i].range_exp == devc->range_exp) {
+ range_str = rangeopts[i].range_str;
+ break;
+ }
+ }
+ *data = g_variant_new_string(range_str);
+ break;
+ case SR_CONF_DIGITS:
+ ret = hp_3478a_get_status_bytes(sdi);
+ if (ret != SR_OK)
+ return ret;
+ *data = g_variant_new_string(digits_map[devc->spec_digits]);
+ break;
default:
return SR_ERR_NA;
}
- return ret;
+ return SR_OK;
}
static int config_set(uint32_t key, GVariant *data,
const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
- int ret;
+ struct dev_context *devc;
+ enum sr_mq mq;
+ enum sr_mqflag mq_flags;
+ GVariant *tuple_child;
+ unsigned int i;
+ const char *range_str;
+ const char *digits_str;
- (void)sdi;
- (void)data;
(void)cg;
- ret = SR_OK;
+ devc = sdi ? sdi->priv : NULL;
+
switch (key) {
- /* TODO */
+ 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);
+ g_variant_unref(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);
+ case SR_CONF_RANGE:
+ range_str = g_variant_get_string(data, NULL);
+ for (i = 0; i < ARRAY_SIZE(rangeopts); i++) {
+ if (rangeopts[i].mq == devc->measurement_mq &&
+ rangeopts[i].mqflag == devc->measurement_mq_flags &&
+ g_strcmp0(rangeopts[i].range_str, range_str) == 0) {
+ return hp_3478a_set_range(sdi, rangeopts[i].range_exp);
+ }
+ }
+ return SR_ERR_NA;
+ case SR_CONF_DIGITS:
+ digits_str = g_variant_get_string(data, NULL);
+ for (i = 0; i < ARRAY_SIZE(rangeopts); i++) {
+ if (g_strcmp0(digits_map[i], digits_str) == 0)
+ return hp_3478a_set_digits(sdi, i);
+ }
+ return SR_ERR_NA;
default:
- ret = SR_ERR_NA;
+ return SR_ERR_NA;
}
- return ret;
+ return SR_OK;
}
static int config_list(uint32_t key, GVariant **data,
const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
+ struct dev_context *devc;
int ret;
+ unsigned int i;
+ GVariant *gvar, *arr[2];
+ GVariantBuilder gvb;
- (void)sdi;
- (void)data;
- (void)cg;
+ devc = sdi ? sdi->priv : NULL;
- ret = SR_OK;
switch (key) {
- /* TODO */
+ 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;
+ case SR_CONF_RANGE:
+ ret = hp_3478a_get_status_bytes(sdi);
+ if (ret != SR_OK)
+ return ret;
+ g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
+ for (i = 0; i < ARRAY_SIZE(rangeopts); i++) {
+ if (rangeopts[i].mq == devc->measurement_mq &&
+ rangeopts[i].mqflag == devc->measurement_mq_flags) {
+ g_variant_builder_add(&gvb, "s", rangeopts[i].range_str);
+ }
+ }
+ *data = g_variant_builder_end(&gvb);
+ break;
+ case SR_CONF_DIGITS:
+ *data = g_variant_new_strv(ARRAY_AND_SIZE(digits));
+ break;
default:
return SR_ERR_NA;
}
- return ret;
+ return SR_OK;
}
static int dev_acquisition_start(const struct sr_dev_inst *sdi)
{
- /* TODO: configure hardware, reset acquisition state, set up
- * callbacks and send header packet. */
+ struct sr_scpi_dev_inst *scpi;
+ struct dev_context *devc;
- (void)sdi;
+ scpi = sdi->conn;
+ devc = sdi->priv;
- return SR_OK;
+ 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.
+ */
+
+ /* 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)
{
- /* TODO: stop acquisition. */
+ struct sr_scpi_dev_inst *scpi;
+
+ scpi = sdi->conn;
- (void)sdi;
+ 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 = {
+static struct sr_dev_driver hp_3478a_driver_info = {
.name = "hp-3478a",
.longname = "HP 3478A",
.api_version = 1,
.dev_acquisition_stop = dev_acquisition_stop,
.context = NULL,
};
-
SR_REGISTER_DEV_DRIVER(hp_3478a_driver_info);
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