+/*
+ * This file is part of the sigrok project.
+ *
+ * Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
+ *
+ * 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 <glib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+#include <errno.h>
+#include "libsigrok.h"
+#include "libsigrok-internal.h"
+#include "agilent-dmm.h"
+
+static const int hwopts[] = {
+ SR_CONF_CONN,
+ SR_CONF_SERIALCOMM,
+ 0,
+};
+
+static const int hwcaps[] = {
+ SR_CONF_MULTIMETER,
+ SR_CONF_LIMIT_SAMPLES,
+ SR_CONF_LIMIT_MSEC,
+ SR_CONF_CONTINUOUS,
+ 0,
+};
+
+extern const struct agdmm_job agdmm_jobs_u123x[];
+extern const struct agdmm_recv agdmm_recvs_u123x[];
+extern const struct agdmm_job agdmm_jobs_u125x[];
+extern const struct agdmm_recv agdmm_recvs_u125x[];
+
+/* This works on all the Agilent U12xxA series, although the
+ * U127xA can apparently also run at 19200/8n1. */
+#define SERIALCOMM "9600/8n1"
+
+static const struct agdmm_profile supported_agdmm[] = {
+ { AGILENT_U1231A, "U1231A", agdmm_jobs_u123x, agdmm_recvs_u123x },
+ { AGILENT_U1232A, "U1232A", agdmm_jobs_u123x, agdmm_recvs_u123x },
+ { AGILENT_U1233A, "U1233A", agdmm_jobs_u123x, agdmm_recvs_u123x },
+ { AGILENT_U1251A, "U1251A", agdmm_jobs_u125x, agdmm_recvs_u125x },
+ { AGILENT_U1252A, "U1252A", agdmm_jobs_u125x, agdmm_recvs_u125x },
+ { AGILENT_U1253A, "U1253A", agdmm_jobs_u125x, agdmm_recvs_u125x },
+ { 0, NULL, NULL, NULL }
+};
+
+SR_PRIV struct sr_dev_driver agdmm_driver_info;
+static struct sr_dev_driver *di = &agdmm_driver_info;
+
+/* Properly close and free all devices. */
+static int clear_instances(void)
+{
+ struct sr_dev_inst *sdi;
+ struct drv_context *drvc;
+ struct dev_context *devc;
+ GSList *l;
+
+ if (!(drvc = di->priv))
+ return SR_OK;
+
+ drvc = di->priv;
+ for (l = drvc->instances; l; l = l->next) {
+ if (!(sdi = l->data))
+ continue;
+ if (!(devc = sdi->priv))
+ continue;
+ sr_serial_dev_inst_free(devc->serial);
+ sr_dev_inst_free(sdi);
+ }
+ g_slist_free(drvc->instances);
+ drvc->instances = NULL;
+
+ return SR_OK;
+}
+
+static int hw_init(struct sr_context *sr_ctx)
+{
+ return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN);
+}
+
+static GSList *hw_scan(GSList *options)
+{
+ struct sr_dev_inst *sdi;
+ struct drv_context *drvc;
+ struct dev_context *devc;
+ struct sr_config *src;
+ struct sr_probe *probe;
+ struct sr_serial_dev_inst *serial;
+ GSList *l, *devices;
+ int len, i;
+ const char *conn, *serialcomm;
+ char *buf, **tokens;
+
+ drvc = di->priv;
+ drvc->instances = NULL;
+
+ devices = NULL;
+ conn = serialcomm = NULL;
+ for (l = options; l; l = l->next) {
+ src = l->data;
+ switch (src->key) {
+ case SR_CONF_CONN:
+ conn = src->value;
+ break;
+ case SR_CONF_SERIALCOMM:
+ serialcomm = src->value;
+ break;
+ }
+ }
+ if (!conn)
+ return NULL;
+ if (!serialcomm)
+ serialcomm = SERIALCOMM;
+
+ if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
+ return NULL;
+
+ if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
+ return NULL;
+
+ serial_flush(serial);
+ if (serial_write(serial, "*IDN?\r\n", 7) == -1) {
+ sr_err("Unable to send identification string: %s.",
+ strerror(errno));
+ return NULL;
+ }
+
+ len = 128;
+ if (!(buf = g_try_malloc(len))) {
+ sr_err("Serial buffer malloc failed.");
+ return NULL;
+ }
+ serial_readline(serial, &buf, &len, 150);
+ if (!len)
+ return NULL;
+
+ tokens = g_strsplit(buf, ",", 4);
+ if (!strcmp("Agilent Technologies", tokens[0])
+ && tokens[2] && tokens[3]) {
+ for (i = 0; supported_agdmm[i].model; i++) {
+ if (strcmp(supported_agdmm[i].modelname, tokens[1]))
+ continue;
+ if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, tokens[0],
+ tokens[1], tokens[3])))
+ return NULL;
+ if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
+ sr_err("Device context malloc failed.");
+ return NULL;
+ }
+ devc->profile = &supported_agdmm[i];
+ devc->serial = serial;
+ devc->cur_mq = -1;
+ sdi->priv = devc;
+ sdi->driver = di;
+ if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1")))
+ return NULL;
+ sdi->probes = g_slist_append(sdi->probes, probe);
+ drvc->instances = g_slist_append(drvc->instances, sdi);
+ devices = g_slist_append(devices, sdi);
+ break;
+ }
+ }
+ g_strfreev(tokens);
+ g_free(buf);
+
+ serial_close(serial);
+ if (!devices)
+ sr_serial_dev_inst_free(serial);
+
+ return devices;
+}
+
+static GSList *hw_dev_list(void)
+{
+ return ((struct drv_context *)(di->priv))->instances;
+}
+
+static int hw_dev_open(struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+
+ if (!(devc = sdi->priv)) {
+ sr_err("sdi->priv was NULL.");
+ return SR_ERR_BUG;
+ }
+
+ if (serial_open(devc->serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
+ return SR_ERR;
+
+ sdi->status = SR_ST_ACTIVE;
+
+ return SR_OK;
+}
+
+static int hw_dev_close(struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+
+ devc = sdi->priv;
+
+ if (devc->serial && devc->serial->fd != -1) {
+ serial_close(devc->serial);
+ sdi->status = SR_ST_INACTIVE;
+ }
+
+ return SR_OK;
+}
+
+static int hw_cleanup(void)
+{
+
+ clear_instances();
+
+ return SR_OK;
+}
+
+static int config_set(int id, const void *value, const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+
+ if (sdi->status != SR_ST_ACTIVE)
+ return SR_ERR;
+
+ if (!(devc = sdi->priv)) {
+ sr_err("sdi->priv was NULL.");
+ return SR_ERR_BUG;
+ }
+
+ switch (id) {
+ case SR_CONF_LIMIT_MSEC:
+ /* TODO: not yet implemented */
+ if (*(const uint64_t *)value == 0) {
+ sr_err("LIMIT_MSEC can't be 0.");
+ return SR_ERR;
+ }
+ devc->limit_msec = *(const uint64_t *)value;
+ sr_dbg("Setting time limit to %" PRIu64 "ms.",
+ devc->limit_msec);
+ break;
+ case SR_CONF_LIMIT_SAMPLES:
+ devc->limit_samples = *(const uint64_t *)value;
+ sr_dbg("Setting sample limit to %" PRIu64 ".",
+ devc->limit_samples);
+ break;
+ default:
+ sr_err("Unknown capability: %d.", id);
+ return SR_ERR;
+ break;
+ }
+
+ return SR_OK;
+}
+
+static int config_list(int key, const void **data, const struct sr_dev_inst *sdi)
+{
+
+ (void)sdi;
+
+ switch (key) {
+ case SR_CONF_SCAN_OPTIONS:
+ *data = hwopts;
+ break;
+ case SR_CONF_DEVICE_OPTIONS:
+ *data = hwcaps;
+ break;
+ default:
+ return SR_ERR_ARG;
+ }
+
+ return SR_OK;
+}
+
+static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
+ void *cb_data)
+{
+ struct dev_context *devc;
+
+ if (!(devc = sdi->priv)) {
+ sr_err("sdi->priv was NULL.");
+ return SR_ERR_BUG;
+ }
+
+ devc->cb_data = cb_data;
+
+ /* Send header packet to the session bus. */
+ std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);
+
+ /* Poll every 100ms, or whenever some data comes in. */
+ sr_source_add(devc->serial->fd, G_IO_IN, 100, agdmm_receive_data, (void *)sdi);
+
+ return SR_OK;
+}
+
+static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
+{
+ struct sr_datafeed_packet packet;
+ struct dev_context *devc;
+
+ if (sdi->status != SR_ST_ACTIVE)
+ return SR_ERR;
+
+ if (!(devc = sdi->priv)) {
+ sr_err("sdi->priv was NULL.");
+ return SR_ERR_BUG;
+ }
+
+ sr_dbg("Stopping acquisition.");
+
+ sr_source_remove(devc->serial->fd);
+ hw_dev_close((struct sr_dev_inst *)sdi);
+
+ /* Send end packet to the session bus. */
+ sr_dbg("Sending SR_DF_END.");
+ packet.type = SR_DF_END;
+ sr_session_send(cb_data, &packet);
+
+
+ return SR_OK;
+}
+
+SR_PRIV struct sr_dev_driver agdmm_driver_info = {
+ .name = "agilent-dmm",
+ .longname = "Agilent U12xx series DMMs",
+ .api_version = 1,
+ .init = hw_init,
+ .cleanup = hw_cleanup,
+ .scan = hw_scan,
+ .dev_list = hw_dev_list,
+ .dev_clear = clear_instances,
+ .config_set = config_set,
+ .config_list = config_list,
+ .dev_open = hw_dev_open,
+ .dev_close = hw_dev_close,
+ .dev_acquisition_start = hw_dev_acquisition_start,
+ .dev_acquisition_stop = hw_dev_acquisition_stop,
+ .priv = NULL,
+};
projects / libsigrok.git / blobdiff