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/>.
24 SR_PRIV const char *scpi_cmd_get(const struct sr_dev_inst *sdi, int command)
26 struct dev_context *devc;
32 for (i = 0; i < devc->device->num_commands; i++) {
33 if (devc->device->commands[i].command == command) {
34 cmd = devc->device->commands[i].string;
42 SR_PRIV int scpi_cmd(const struct sr_dev_inst *sdi, int command, ...)
44 struct sr_scpi_dev_inst *scpi;
49 if (!(cmd = scpi_cmd_get(sdi, command))) {
50 /* Device does not implement this command, that's OK. */
51 return SR_OK_CONTINUE;
55 va_start(args, command);
56 ret = sr_scpi_send_variadic(scpi, cmd, args);
62 SR_PRIV int scpi_cmd_resp(const struct sr_dev_inst *sdi, GVariant **gvar,
63 const GVariantType *gvtype, int command, ...)
65 struct sr_scpi_dev_inst *scpi;
72 if (!(cmd = scpi_cmd_get(sdi, command))) {
73 /* Device does not implement this command, that's OK. */
74 return SR_OK_CONTINUE;
78 va_start(args, command);
79 ret = sr_scpi_send_variadic(scpi, cmd, args);
84 /* Non-standard data type responses. */
85 if (command == SCPI_CMD_GET_OUTPUT_REGULATION) {
87 * The Rigol DP800 series return CV/CC/UR, Philips PM2800
88 * return VOLT/CURR. We always return a GVariant string in
91 if ((ret = sr_scpi_get_string(scpi, NULL, &s)) != SR_OK)
93 if (!strcmp(s, "CV") || !strcmp(s, "VOLT")) {
94 *gvar = g_variant_new_string("CV");
95 } else if (!strcmp(s, "CC") || !strcmp(s, "CURR")) {
96 *gvar = g_variant_new_string("CC");
97 } else if (!strcmp(s, "UR")) {
98 *gvar = g_variant_new_string("UR");
100 sr_dbg("Unknown response to SCPI_CMD_GET_OUTPUT_REGULATION: %s", s);
105 /* Straight SCPI getters to GVariant types. */
106 if (g_variant_type_equal(gvtype, G_VARIANT_TYPE_BOOLEAN)) {
107 if ((ret = sr_scpi_get_string(scpi, NULL, &s)) != SR_OK)
109 if (!strcasecmp(s, "ON") || !strcasecmp(s, "1") || !strcasecmp(s, "YES"))
110 *gvar = g_variant_new_boolean(TRUE);
111 else if (!strcasecmp(s, "OFF") || !strcasecmp(s, "0") || !strcasecmp(s, "NO"))
112 *gvar = g_variant_new_boolean(FALSE);
116 } if (g_variant_type_equal(gvtype, G_VARIANT_TYPE_DOUBLE)) {
117 if ((ret = sr_scpi_get_double(scpi, NULL, &d)) == SR_OK)
118 *gvar = g_variant_new_double(d);
119 } if (g_variant_type_equal(gvtype, G_VARIANT_TYPE_STRING)) {
120 if ((ret = sr_scpi_get_string(scpi, NULL, &s)) == SR_OK)
121 *gvar = g_variant_new_string(s);
128 SR_PRIV int select_channel(const struct sr_dev_inst *sdi, struct sr_channel *ch)
130 struct dev_context *devc;
131 struct pps_channel *cur_pch, *new_pch;
134 if (g_slist_length(sdi->channels) == 1)
138 if (ch == devc->cur_channel)
142 if (devc->cur_channel) {
143 cur_pch = devc->cur_channel->priv;
144 if (cur_pch->hw_output_idx == new_pch->hw_output_idx) {
145 /* Same underlying output channel. */
146 devc->cur_channel = ch;
151 if ((ret = scpi_cmd(sdi, SCPI_CMD_SELECT_CHANNEL, new_pch->hwname)) == SR_OK)
152 devc->cur_channel = ch;
157 SR_PRIV struct sr_channel *next_enabled_channel(const struct sr_dev_inst *sdi,
158 struct sr_channel *cur_channel)
160 struct sr_channel *next_channel;
163 next_channel = cur_channel;
165 l = g_slist_find(sdi->channels, next_channel);
167 next_channel = l->next->data;
169 next_channel = sdi->channels->data;
170 } while (!next_channel->enabled);
175 SR_PRIV int scpi_pps_receive_data(int fd, int revents, void *cb_data)
177 struct dev_context *devc;
178 struct sr_datafeed_packet packet;
179 struct sr_datafeed_analog analog;
180 const struct sr_dev_inst *sdi;
181 struct sr_channel *next_channel;
182 struct sr_scpi_dev_inst *scpi;
183 struct pps_channel *pch;
190 if (!(sdi = cb_data))
193 if (!(devc = sdi->priv))
198 /* Retrieve requested value for this state. */
199 if (sr_scpi_get_float(scpi, NULL, &f) == SR_OK) {
200 pch = devc->cur_channel->priv;
201 packet.type = SR_DF_ANALOG;
202 packet.payload = &analog;
203 analog.channels = g_slist_append(NULL, devc->cur_channel);
204 analog.num_samples = 1;
206 if (pch->mq == SR_MQ_VOLTAGE)
207 analog.unit = SR_UNIT_VOLT;
208 else if (pch->mq == SR_MQ_CURRENT)
209 analog.unit = SR_UNIT_AMPERE;
210 else if (pch->mq == SR_MQ_POWER)
211 analog.unit = SR_UNIT_WATT;
212 analog.mqflags = SR_MQFLAG_DC;
214 sr_session_send(sdi, &packet);
215 g_slist_free(analog.channels);
218 if (g_slist_length(sdi->channels) > 1) {
219 next_channel = next_enabled_channel(sdi, devc->cur_channel);
220 if (select_channel(sdi, next_channel) != SR_OK) {
221 sr_err("Failed to select channel %s", next_channel->name);
226 pch = devc->cur_channel->priv;
227 if (pch->mq == SR_MQ_VOLTAGE)
228 cmd = SCPI_CMD_GET_MEAS_VOLTAGE;
229 else if (pch->mq == SR_MQ_CURRENT)
230 cmd = SCPI_CMD_GET_MEAS_CURRENT;
231 else if (pch->mq == SR_MQ_POWER)
232 cmd = SCPI_CMD_GET_MEAS_POWER;