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sr_scpi_hw_info_free(): Allow NULL as argument.
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1/*
2 * This file is part of the libsigrok project.
3 *
4 * Copyright (C) 2016 Vlad Ivanov <vlad.ivanov@lab-systems.ru>
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
20#include <config.h>
21#include <libserialport.h>
22#include <scpi.h>
23#include <string.h>
24
25#include "protocol.h"
26
27SR_PRIV struct sr_dev_driver rohde_schwarz_sme_0x_driver_info;
28
29static const char *manufacturer = "Rohde&Schwarz";
30
31static const struct rs_device_model device_models[] = {
32 {
33 .model_str = "SME02",
34 .freq_max = SR_GHZ(1.5),
35 .freq_min = SR_KHZ(5),
36 .power_max = 16,
37 .power_min = -144,
38 },
39 {
40 .model_str = "SME03E",
41 .freq_max = SR_GHZ(2.2),
42 .freq_min = SR_KHZ(5),
43 .power_max = 16,
44 .power_min = -144,
45 },
46 {
47 .model_str = "SME03A",
48 .freq_max = SR_GHZ(3),
49 .freq_min = SR_KHZ(5),
50 .power_max = 16,
51 .power_min = -144,
52 },
53 {
54 .model_str = "SME03",
55 .freq_max = SR_GHZ(3),
56 .freq_min = SR_KHZ(5),
57 .power_max = 16,
58 .power_min = -144,
59 },
60 {
61 .model_str = "SME06",
62 .freq_max = SR_GHZ(1.5),
63 .freq_min = SR_KHZ(5),
64 .power_max = 16,
65 .power_min = -144,
66 }
67};
68
69static const uint32_t scanopts[] = {
70 SR_CONF_CONN,
71 SR_CONF_SERIALCOMM,
72};
73
74static const uint32_t drvopts[] = {
75 SR_CONF_SIGNAL_GENERATOR,
76};
77
78static const uint32_t devopts[] = {
79 SR_CONF_OUTPUT_FREQUENCY | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
80 SR_CONF_AMPLITUDE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
81};
82
83static int rs_init_device(struct sr_dev_inst *sdi)
84{
85 struct dev_context *devc;
86 uint8_t model_found;
87
88 devc = sdi->priv;
89 model_found = 0;
90
91 for (size_t i = 0; i < ARRAY_SIZE(device_models); i++) {
92 if (!strcmp(device_models[i].model_str, sdi->model)) {
93 model_found = 1;
94 devc->model_config = &device_models[i];
95 break;
96 }
97 }
98
99 if (!model_found) {
100 sr_dbg("Device %s %s is not supported by this driver.",
101 manufacturer, sdi->model);
102 return SR_ERR_NA;
103 }
104
105 return SR_OK;
106}
107
108static struct sr_dev_inst *rs_probe_serial_device(struct sr_scpi_dev_inst *scpi)
109{
110 struct sr_dev_inst *sdi;
111 struct dev_context *devc;
112 struct sr_scpi_hw_info *hw_info;
113
114 sdi = NULL;
115 devc = NULL;
116 hw_info = NULL;
117
118 rs_sme0x_mode_remote(scpi);
119
120 if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK)
121 goto fail;
122
123 if (strcmp(hw_info->manufacturer, manufacturer) != 0)
124 goto fail;
125
126 sdi = g_malloc0(sizeof(struct sr_dev_inst));
127 sdi->vendor = g_strdup(hw_info->manufacturer);
128 sdi->model = g_strdup(hw_info->model);
129 sdi->version = g_strdup(hw_info->firmware_version);
130 sdi->serial_num = g_strdup(hw_info->serial_number);
131 sdi->driver = &rohde_schwarz_sme_0x_driver_info;
132 sdi->inst_type = SR_INST_SCPI;
133 sdi->conn = scpi;
134
135 sr_scpi_hw_info_free(hw_info);
136 hw_info = NULL;
137
138 devc = g_malloc0(sizeof(struct dev_context));
139 sdi->priv = devc;
140
141 if (rs_init_device(sdi) != SR_OK)
142 goto fail;
143
144 return sdi;
145
146fail:
147 sr_scpi_hw_info_free(hw_info);
148 sr_dev_inst_free(sdi);
149 g_free(devc);
150 return NULL;
151}
152
153static GSList *scan(struct sr_dev_driver *di, GSList *options)
154{
155 return sr_scpi_scan(di->context, options, rs_probe_serial_device);
156}
157
158static int dev_clear(const struct sr_dev_driver *di)
159{
160 return std_dev_clear(di, NULL);
161}
162
163static int dev_open(struct sr_dev_inst *sdi)
164{
165 if ((sdi->status != SR_ST_ACTIVE) && (sr_scpi_open(sdi->conn) != SR_OK))
166 return SR_ERR;
167
168 sdi->status = SR_ST_ACTIVE;
169
170 return SR_OK;
171}
172
173static int dev_close(struct sr_dev_inst *sdi)
174{
175 if (sdi->status == SR_ST_INACTIVE)
176 return SR_OK;
177
178 sr_scpi_close(sdi->conn);
179
180 sdi->status = SR_ST_INACTIVE;
181
182 return SR_OK;
183}
184
185static int config_get(uint32_t key, GVariant **data,
186 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
187{
188 double value_f;
189
190 (void) cg;
191
192 switch (key) {
193 case SR_CONF_OUTPUT_FREQUENCY:
194 rs_sme0x_get_freq(sdi, &value_f);
195 *data = g_variant_new_double(value_f);
196 break;
197 case SR_CONF_AMPLITUDE:
198 rs_sme0x_get_power(sdi, &value_f);
199 *data = g_variant_new_double(value_f);
200 break;
201 default:
202 return SR_ERR_NA;
203 }
204
205 return SR_OK;
206}
207
208static int config_set(uint32_t key, GVariant *data,
209 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
210{
211 double value_f;
212
213 (void)cg;
214
215 if (!sdi)
216 return SR_ERR_ARG;
217
218 if (sdi->status != SR_ST_ACTIVE)
219 return SR_ERR_DEV_CLOSED;
220
221 switch (key) {
222 case SR_CONF_OUTPUT_FREQUENCY:
223 value_f = g_variant_get_double(data);
224 rs_sme0x_set_freq(sdi, value_f);
225 break;
226 case SR_CONF_AMPLITUDE:
227 value_f = g_variant_get_double(data);
228 rs_sme0x_set_power(sdi, value_f);
229 break;
230 default:
231 return SR_ERR_NA;
232 }
233
234 return SR_OK;
235}
236
237static int config_list(uint32_t key, GVariant **data,
238 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
239{
240 (void)sdi;
241 (void)cg;
242
243 /* Return drvopts without sdi (and devopts with sdi, see below). */
244 if (key == SR_CONF_DEVICE_OPTIONS && !sdi) {
245 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
246 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
247 return SR_OK;
248 }
249
250 switch (key) {
251 case SR_CONF_SCAN_OPTIONS:
252 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
253 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
254 break;
255 case SR_CONF_DEVICE_OPTIONS:
256 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
257 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
258 break;
259 default:
260 return SR_ERR_NA;
261 }
262
263 return SR_OK;
264}
265
266static int dev_acquisition_start(const struct sr_dev_inst *sdi)
267{
268 if (sdi->status != SR_ST_ACTIVE)
269 return SR_ERR_DEV_CLOSED;
270
271 return SR_OK;
272}
273
274SR_PRIV struct sr_dev_driver rohde_schwarz_sme_0x_driver_info = {
275 .name = "rohde-schwarz-sme-0x",
276 .longname = "Rohde&Schwarz SME-0x",
277 .api_version = 1,
278 .init = std_init,
279 .cleanup = std_cleanup,
280 .scan = scan,
281 .dev_list = std_dev_list,
282 .dev_clear = dev_clear,
283 .config_get = config_get,
284 .config_set = config_set,
285 .config_list = config_list,
286 .dev_open = dev_open,
287 .dev_close = dev_close,
288 .dev_acquisition_start = dev_acquisition_start,
289 .dev_acquisition_stop = std_serial_dev_acquisition_stop,
290 .context = NULL,
291};
292
293SR_REGISTER_DEV_DRIVER(rohde_schwarz_sme_0x_driver_info);