2 * This file is part of the libsigrok project.
4 * Copyright (C) 2014 Bert Vermeulen <bert@biot.com>
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
25 SR_PRIV const char *scpi_cmd_get(const struct sr_dev_inst *sdi, int command)
27 struct dev_context *devc;
33 for (i = 0; i < devc->device->num_commands; i++) {
34 if (devc->device->commands[i].command == command) {
35 cmd = devc->device->commands[i].string;
43 SR_PRIV int scpi_cmd(const struct sr_dev_inst *sdi, int command, ...)
45 struct sr_scpi_dev_inst *scpi;
50 if (!(cmd = scpi_cmd_get(sdi, command))) {
51 /* Device does not implement this command, that's OK. */
52 return SR_OK_CONTINUE;
56 va_start(args, command);
57 ret = sr_scpi_send_variadic(scpi, cmd, args);
63 SR_PRIV int scpi_cmd_resp(const struct sr_dev_inst *sdi, GVariant **gvar,
64 const GVariantType *gvtype, int command, ...)
66 struct sr_scpi_dev_inst *scpi;
73 if (!(cmd = scpi_cmd_get(sdi, command))) {
74 /* Device does not implement this command, that's OK. */
75 return SR_OK_CONTINUE;
79 va_start(args, command);
80 ret = sr_scpi_send_variadic(scpi, cmd, args);
85 /* Non-standard data type responses. */
86 if (command == SCPI_CMD_GET_OUTPUT_REGULATION) {
88 * The Rigol DP800 series return CV/CC/UR, Philips PM2800
89 * return VOLT/CURR. We always return a GVariant string in
92 if ((ret = sr_scpi_get_string(scpi, NULL, &s)) != SR_OK)
94 if (!strcmp(s, "CV") || !strcmp(s, "VOLT")) {
95 *gvar = g_variant_new_string("CV");
96 } else if (!strcmp(s, "CC") || !strcmp(s, "CURR")) {
97 *gvar = g_variant_new_string("CC");
98 } else if (!strcmp(s, "UR")) {
99 *gvar = g_variant_new_string("UR");
101 sr_dbg("Unknown response to SCPI_CMD_GET_OUTPUT_REGULATION: %s", s);
106 /* Straight SCPI getters to GVariant types. */
107 if (g_variant_type_equal(gvtype, G_VARIANT_TYPE_BOOLEAN)) {
108 if ((ret = sr_scpi_get_string(scpi, NULL, &s)) != SR_OK)
110 if (!strcasecmp(s, "ON") || !strcasecmp(s, "1") || !strcasecmp(s, "YES"))
111 *gvar = g_variant_new_boolean(TRUE);
112 else if (!strcasecmp(s, "OFF") || !strcasecmp(s, "0") || !strcasecmp(s, "NO"))
113 *gvar = g_variant_new_boolean(FALSE);
117 } if (g_variant_type_equal(gvtype, G_VARIANT_TYPE_DOUBLE)) {
118 if ((ret = sr_scpi_get_double(scpi, NULL, &d)) == SR_OK)
119 *gvar = g_variant_new_double(d);
120 } if (g_variant_type_equal(gvtype, G_VARIANT_TYPE_STRING)) {
121 if ((ret = sr_scpi_get_string(scpi, NULL, &s)) == SR_OK)
122 *gvar = g_variant_new_string(s);
129 SR_PRIV int select_channel(const struct sr_dev_inst *sdi, struct sr_channel *ch)
131 struct dev_context *devc;
132 struct pps_channel *cur_pch, *new_pch;
135 if (g_slist_length(sdi->channels) == 1)
139 if (ch == devc->cur_channel)
143 if (devc->cur_channel) {
144 cur_pch = devc->cur_channel->priv;
145 if (cur_pch->hw_output_idx == new_pch->hw_output_idx) {
146 /* Same underlying output channel. */
147 devc->cur_channel = ch;
152 if ((ret = scpi_cmd(sdi, SCPI_CMD_SELECT_CHANNEL, new_pch->hwname)) == SR_OK)
153 devc->cur_channel = ch;
158 SR_PRIV struct sr_channel *next_enabled_channel(const struct sr_dev_inst *sdi,
159 struct sr_channel *cur_channel)
161 struct sr_channel *next_channel;
164 next_channel = cur_channel;
166 l = g_slist_find(sdi->channels, next_channel);
168 next_channel = l->next->data;
170 next_channel = sdi->channels->data;
171 } while (!next_channel->enabled);
176 SR_PRIV int scpi_pps_receive_data(int fd, int revents, void *cb_data)
178 struct dev_context *devc;
179 struct sr_datafeed_packet packet;
180 struct sr_datafeed_analog analog;
181 const struct sr_dev_inst *sdi;
182 struct sr_channel *next_channel;
183 struct sr_scpi_dev_inst *scpi;
184 struct pps_channel *pch;
191 if (!(sdi = cb_data))
194 if (!(devc = sdi->priv))
199 /* Retrieve requested value for this state. */
200 if (sr_scpi_get_float(scpi, NULL, &f) == SR_OK) {
201 pch = devc->cur_channel->priv;
202 packet.type = SR_DF_ANALOG;
203 packet.payload = &analog;
204 analog.channels = g_slist_append(NULL, devc->cur_channel);
205 analog.num_samples = 1;
207 if (pch->mq == SR_MQ_VOLTAGE)
208 analog.unit = SR_UNIT_VOLT;
209 else if (pch->mq == SR_MQ_CURRENT)
210 analog.unit = SR_UNIT_AMPERE;
211 else if (pch->mq == SR_MQ_POWER)
212 analog.unit = SR_UNIT_WATT;
213 analog.mqflags = SR_MQFLAG_DC;
215 sr_session_send(sdi, &packet);
216 g_slist_free(analog.channels);
219 if (g_slist_length(sdi->channels) > 1) {
220 next_channel = next_enabled_channel(sdi, devc->cur_channel);
221 if (select_channel(sdi, next_channel) != SR_OK) {
222 sr_err("Failed to select channel %s", next_channel->name);
227 pch = devc->cur_channel->priv;
228 if (pch->mq == SR_MQ_VOLTAGE)
229 cmd = SCPI_CMD_GET_MEAS_VOLTAGE;
230 else if (pch->mq == SR_MQ_FREQUENCY)
231 cmd = SCPI_CMD_GET_MEAS_FREQUENCY;
232 else if (pch->mq == SR_MQ_CURRENT)
233 cmd = SCPI_CMD_GET_MEAS_CURRENT;
234 else if (pch->mq == SR_MQ_POWER)
235 cmd = SCPI_CMD_GET_MEAS_POWER;