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rigol-ds: close SCPI device after using for scan.
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1/*
2 * This file is part of the libsigrok project.
3 *
4 * Copyright (C) 2012 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
20#include <glib.h>
21#include "libsigrok.h"
22#include "libsigrok-internal.h"
23#include "protocol.h"
24#include <sys/types.h>
25#include <sys/stat.h>
26#include <fcntl.h>
27#include <errno.h>
28#include <string.h>
29
30/* The Colead SL-5868P uses this. */
31#define SERIALCOMM "2400/8n1"
32
33static const int32_t hwopts[] = {
34 SR_CONF_CONN,
35 SR_CONF_SERIALCOMM,
36};
37
38static const int32_t hwcaps[] = {
39 SR_CONF_SOUNDLEVELMETER,
40 SR_CONF_LIMIT_SAMPLES,
41 SR_CONF_LIMIT_MSEC,
42 SR_CONF_CONTINUOUS,
43};
44
45SR_PRIV struct sr_dev_driver colead_slm_driver_info;
46static struct sr_dev_driver *di = &colead_slm_driver_info;
47
48static int dev_clear(void)
49{
50 return std_dev_clear(di, NULL);
51}
52
53static int init(struct sr_context *sr_ctx)
54{
55 return std_init(sr_ctx, di, LOG_PREFIX);
56}
57
58static GSList *scan(GSList *options)
59{
60 struct drv_context *drvc;
61 struct dev_context *devc;
62 struct sr_dev_inst *sdi;
63 struct sr_config *src;
64 struct sr_probe *probe;
65 GSList *devices, *l;
66 const char *conn, *serialcomm;
67
68 drvc = di->priv;
69 drvc->instances = NULL;
70
71 devices = NULL;
72
73 conn = serialcomm = NULL;
74 for (l = options; l; l = l->next) {
75 src = l->data;
76 switch (src->key) {
77 case SR_CONF_CONN:
78 conn = g_variant_get_string(src->data, NULL);
79 break;
80 case SR_CONF_SERIALCOMM:
81 serialcomm = g_variant_get_string(src->data, NULL);
82 break;
83 }
84 }
85 if (!conn)
86 return NULL;
87 if (!serialcomm)
88 serialcomm = SERIALCOMM;
89
90 if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Colead",
91 "SL-5868P", NULL)))
92 return NULL;
93
94 if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
95 sr_dbg("Device context malloc failed.");
96 return NULL;
97 }
98
99 if (!(sdi->conn = sr_serial_dev_inst_new(conn, serialcomm)))
100 return NULL;
101
102 sdi->inst_type = SR_INST_SERIAL;
103 sdi->priv = devc;
104 sdi->driver = di;
105 if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1")))
106 return NULL;
107 sdi->probes = g_slist_append(sdi->probes, probe);
108 drvc->instances = g_slist_append(drvc->instances, sdi);
109 devices = g_slist_append(devices, sdi);
110
111 return devices;
112}
113
114static GSList *dev_list(void)
115{
116 return ((struct drv_context *)(di->priv))->instances;
117}
118
119static int dev_open(struct sr_dev_inst *sdi)
120{
121 struct sr_serial_dev_inst *serial;
122
123 serial = sdi->conn;
124 if (serial_open(serial, SERIAL_RDWR) != SR_OK)
125 return SR_ERR;
126
127 sdi->status = SR_ST_ACTIVE;
128
129 return SR_OK;
130}
131
132static int dev_close(struct sr_dev_inst *sdi)
133{
134 struct sr_serial_dev_inst *serial;
135
136 serial = sdi->conn;
137 if (serial && serial->fd != -1) {
138 serial_close(serial);
139 sdi->status = SR_ST_INACTIVE;
140 }
141
142 return SR_OK;
143}
144
145static int cleanup(void)
146{
147 return dev_clear();
148}
149
150static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi,
151 const struct sr_probe_group *probe_group)
152{
153 struct dev_context *devc;
154
155 (void)probe_group;
156
157 if (sdi->status != SR_ST_ACTIVE)
158 return SR_ERR_DEV_CLOSED;
159
160 if (!(devc = sdi->priv)) {
161 sr_err("sdi->priv was NULL.");
162 return SR_ERR_BUG;
163 }
164
165 switch (id) {
166 case SR_CONF_LIMIT_MSEC:
167 /* TODO: not yet implemented */
168 if (g_variant_get_uint64(data) == 0) {
169 sr_err("LIMIT_MSEC can't be 0.");
170 return SR_ERR;
171 }
172 devc->limit_msec = g_variant_get_uint64(data);;
173 sr_dbg("Setting time limit to %" PRIu64 "ms.",
174 devc->limit_msec);
175 break;
176 case SR_CONF_LIMIT_SAMPLES:
177 devc->limit_samples = g_variant_get_uint64(data);
178 sr_dbg("Setting sample limit to %" PRIu64 ".",
179 devc->limit_samples);
180 break;
181 default:
182 return SR_ERR_NA;
183 }
184
185 return SR_OK;
186}
187
188static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
189 const struct sr_probe_group *probe_group)
190{
191 (void)sdi;
192 (void)probe_group;
193
194 switch (key) {
195 case SR_CONF_SCAN_OPTIONS:
196 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
197 hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
198 break;
199 case SR_CONF_DEVICE_OPTIONS:
200 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
201 hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
202 break;
203 default:
204 return SR_ERR_NA;
205 }
206
207 return SR_OK;
208}
209
210static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
211{
212 struct dev_context *devc;
213 struct sr_serial_dev_inst *serial;
214
215 if (sdi->status != SR_ST_ACTIVE)
216 return SR_ERR_DEV_CLOSED;
217
218 if (!(devc = sdi->priv)) {
219 sr_err("sdi->priv was NULL.");
220 return SR_ERR_BUG;
221 }
222
223 devc->cb_data = cb_data;
224
225 /* Send header packet to the session bus. */
226 std_session_send_df_header(cb_data, LOG_PREFIX);
227
228 /* Poll every 150ms, or whenever some data comes in. */
229 serial = sdi->conn;
230 sr_source_add(serial->fd, G_IO_IN, 150, colead_slm_receive_data,
231 (void *)sdi);
232
233 return SR_OK;
234}
235
236static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
237{
238 return std_dev_acquisition_stop_serial(sdi, cb_data, dev_close,
239 sdi->conn, LOG_PREFIX);
240}
241
242SR_PRIV struct sr_dev_driver colead_slm_driver_info = {
243 .name = "colead-slm",
244 .longname = "Colead SLM",
245 .api_version = 1,
246 .init = init,
247 .cleanup = cleanup,
248 .scan = scan,
249 .dev_list = dev_list,
250 .dev_clear = dev_clear,
251 .config_get = NULL,
252 .config_set = config_set,
253 .config_list = config_list,
254 .dev_open = dev_open,
255 .dev_close = dev_close,
256 .dev_acquisition_start = dev_acquisition_start,
257 .dev_acquisition_stop = dev_acquisition_stop,
258 .priv = NULL,
259};