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ca1a7cb5 BV |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2014 Bert Vermeulen <bert@biot.com> | |
5 | * | |
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. | |
10 | * | |
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. | |
15 | * | |
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/>. | |
18 | */ | |
19 | ||
9e45cd41 | 20 | #include <string.h> |
ba464a12 | 21 | #include <strings.h> |
9e45cd41 | 22 | #include <stdarg.h> |
ca1a7cb5 BV |
23 | #include "protocol.h" |
24 | ||
329733d9 | 25 | SR_PRIV const char *scpi_cmd_get(const struct sr_dev_inst *sdi, int command) |
9e45cd41 | 26 | { |
9e45cd41 | 27 | struct dev_context *devc; |
9e45cd41 | 28 | unsigned int i; |
329733d9 | 29 | const char *cmd; |
9e45cd41 BV |
30 | |
31 | devc = sdi->priv; | |
32 | cmd = NULL; | |
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; | |
36 | break; | |
37 | } | |
38 | } | |
478c8d92 BV |
39 | |
40 | return cmd; | |
41 | } | |
42 | ||
43 | SR_PRIV int scpi_cmd(const struct sr_dev_inst *sdi, int command, ...) | |
44 | { | |
45 | struct sr_scpi_dev_inst *scpi; | |
46 | va_list args; | |
47 | int ret; | |
329733d9 | 48 | const char *cmd; |
478c8d92 BV |
49 | |
50 | if (!(cmd = scpi_cmd_get(sdi, command))) { | |
9e45cd41 BV |
51 | /* Device does not implement this command, that's OK. */ |
52 | return SR_OK_CONTINUE; | |
53 | } | |
54 | ||
55 | scpi = sdi->conn; | |
56 | va_start(args, command); | |
57 | ret = sr_scpi_send_variadic(scpi, cmd, args); | |
58 | va_end(args); | |
59 | ||
60 | return ret; | |
61 | } | |
62 | ||
478c8d92 BV |
63 | SR_PRIV int scpi_cmd_resp(const struct sr_dev_inst *sdi, GVariant **gvar, |
64 | const GVariantType *gvtype, int command, ...) | |
65 | { | |
66 | struct sr_scpi_dev_inst *scpi; | |
67 | va_list args; | |
68 | double d; | |
69 | int ret; | |
329733d9 UH |
70 | char *s; |
71 | const char *cmd; | |
478c8d92 BV |
72 | |
73 | if (!(cmd = scpi_cmd_get(sdi, command))) { | |
74 | /* Device does not implement this command, that's OK. */ | |
75 | return SR_OK_CONTINUE; | |
76 | } | |
77 | ||
78 | scpi = sdi->conn; | |
79 | va_start(args, command); | |
80 | ret = sr_scpi_send_variadic(scpi, cmd, args); | |
81 | va_end(args); | |
82 | if (ret != SR_OK) | |
83 | return ret; | |
84 | ||
c1d56d20 BV |
85 | /* Non-standard data type responses. */ |
86 | if (command == SCPI_CMD_GET_OUTPUT_REGULATION) { | |
87 | /* | |
88 | * The Rigol DP800 series return CV/CC/UR, Philips PM2800 | |
89 | * return VOLT/CURR. We always return a GVariant string in | |
90 | * the Rigol notation. | |
91 | */ | |
478c8d92 BV |
92 | if ((ret = sr_scpi_get_string(scpi, NULL, &s)) != SR_OK) |
93 | return ret; | |
c1d56d20 BV |
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"); | |
100 | } else { | |
101 | sr_dbg("Unknown response to SCPI_CMD_GET_OUTPUT_REGULATION: %s", s); | |
102 | ret = SR_ERR_DATA; | |
103 | } | |
104 | g_free(s); | |
105 | } else { | |
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) | |
109 | return ret; | |
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); | |
114 | else | |
115 | ret = SR_ERR; | |
116 | g_free(s); | |
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); | |
123 | } | |
478c8d92 BV |
124 | } |
125 | ||
126 | return ret; | |
127 | } | |
128 | ||
60475cd7 BV |
129 | SR_PRIV int select_channel(const struct sr_dev_inst *sdi, struct sr_channel *ch) |
130 | { | |
131 | struct dev_context *devc; | |
624503ae | 132 | struct pps_channel *cur_pch, *new_pch; |
60475cd7 BV |
133 | int ret; |
134 | ||
135 | if (g_slist_length(sdi->channels) == 1) | |
136 | return SR_OK; | |
137 | ||
138 | devc = sdi->priv; | |
139 | if (ch == devc->cur_channel) | |
140 | return SR_OK; | |
141 | ||
624503ae BV |
142 | new_pch = ch->priv; |
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; | |
148 | return SR_OK; | |
149 | } | |
150 | } | |
151 | ||
c1603f45 | 152 | if ((ret = scpi_cmd(sdi, SCPI_CMD_SELECT_CHANNEL, new_pch->hwname)) >= 0) |
60475cd7 BV |
153 | devc->cur_channel = ch; |
154 | ||
155 | return ret; | |
156 | } | |
157 | ||
624503ae BV |
158 | SR_PRIV struct sr_channel *next_enabled_channel(const struct sr_dev_inst *sdi, |
159 | struct sr_channel *cur_channel) | |
160 | { | |
161 | struct sr_channel *next_channel; | |
162 | GSList *l; | |
163 | ||
164 | next_channel = cur_channel; | |
165 | do { | |
166 | l = g_slist_find(sdi->channels, next_channel); | |
167 | if (l && l->next) | |
168 | next_channel = l->next->data; | |
169 | else | |
170 | next_channel = sdi->channels->data; | |
171 | } while (!next_channel->enabled); | |
172 | ||
173 | return next_channel; | |
174 | } | |
175 | ||
ca1a7cb5 BV |
176 | SR_PRIV int scpi_pps_receive_data(int fd, int revents, void *cb_data) |
177 | { | |
ca1a7cb5 | 178 | struct dev_context *devc; |
9e45cd41 BV |
179 | struct sr_datafeed_packet packet; |
180 | struct sr_datafeed_analog analog; | |
181 | const struct sr_dev_inst *sdi; | |
60475cd7 | 182 | struct sr_channel *next_channel; |
9e45cd41 | 183 | struct sr_scpi_dev_inst *scpi; |
01b0257a | 184 | struct pps_channel *pch; |
9e45cd41 | 185 | float f; |
01b0257a | 186 | int cmd; |
ca1a7cb5 BV |
187 | |
188 | (void)fd; | |
9e45cd41 | 189 | (void)revents; |
ca1a7cb5 BV |
190 | |
191 | if (!(sdi = cb_data)) | |
192 | return TRUE; | |
193 | ||
194 | if (!(devc = sdi->priv)) | |
195 | return TRUE; | |
196 | ||
9e45cd41 BV |
197 | scpi = sdi->conn; |
198 | ||
199 | /* Retrieve requested value for this state. */ | |
200 | if (sr_scpi_get_float(scpi, NULL, &f) == SR_OK) { | |
01b0257a | 201 | pch = devc->cur_channel->priv; |
9e45cd41 BV |
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; | |
01b0257a BV |
206 | analog.mq = pch->mq; |
207 | if (pch->mq == SR_MQ_VOLTAGE) | |
9e45cd41 | 208 | analog.unit = SR_UNIT_VOLT; |
01b0257a | 209 | else if (pch->mq == SR_MQ_CURRENT) |
9e45cd41 | 210 | analog.unit = SR_UNIT_AMPERE; |
01b0257a BV |
211 | else if (pch->mq == SR_MQ_POWER) |
212 | analog.unit = SR_UNIT_WATT; | |
9e45cd41 BV |
213 | analog.mqflags = SR_MQFLAG_DC; |
214 | analog.data = &f; | |
215 | sr_session_send(sdi, &packet); | |
216 | g_slist_free(analog.channels); | |
217 | } | |
218 | ||
60475cd7 | 219 | if (g_slist_length(sdi->channels) > 1) { |
624503ae BV |
220 | next_channel = next_enabled_channel(sdi, devc->cur_channel); |
221 | if (select_channel(sdi, next_channel) != SR_OK) { | |
60475cd7 BV |
222 | sr_err("Failed to select channel %s", next_channel->name); |
223 | return FALSE; | |
224 | } | |
225 | } | |
01b0257a BV |
226 | |
227 | pch = devc->cur_channel->priv; | |
228 | if (pch->mq == SR_MQ_VOLTAGE) | |
229 | cmd = SCPI_CMD_GET_MEAS_VOLTAGE; | |
4264f1c0 AG |
230 | else if (pch->mq == SR_MQ_FREQUENCY) |
231 | cmd = SCPI_CMD_GET_MEAS_FREQUENCY; | |
01b0257a BV |
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; | |
236 | else | |
237 | return SR_ERR; | |
624503ae | 238 | scpi_cmd(sdi, cmd); |
ca1a7cb5 BV |
239 | |
240 | return TRUE; | |
241 | } |