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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2012 Uwe Hermann <uwe@hermann-uwe.de> | |
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 2 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, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include <fcntl.h> | |
22 | #include <glib.h> | |
23 | #include "libsigrok.h" | |
24 | #include "libsigrok-internal.h" | |
25 | #include "protocol.h" | |
26 | ||
27 | #define SERIALCOMM "9600/8e1" | |
28 | ||
29 | static const int hwopts[] = { | |
30 | SR_HWOPT_CONN, | |
31 | SR_HWOPT_SERIALCOMM, | |
32 | 0, | |
33 | }; | |
34 | ||
35 | static const int hwcaps[] = { | |
36 | SR_HWCAP_SOUNDLEVELMETER, | |
37 | SR_HWCAP_LIMIT_SAMPLES, | |
38 | SR_HWCAP_CONTINUOUS, | |
39 | 0, | |
40 | }; | |
41 | ||
42 | static const char *probe_names[] = { | |
43 | "P1", | |
44 | NULL, | |
45 | }; | |
46 | ||
47 | SR_PRIV struct sr_dev_driver tondaj_sl_814_driver_info; | |
48 | static struct sr_dev_driver *di = &tondaj_sl_814_driver_info; | |
49 | ||
50 | /* Properly close and free all devices. */ | |
51 | static int clear_instances(void) | |
52 | { | |
53 | struct sr_dev_inst *sdi; | |
54 | struct drv_context *drvc; | |
55 | struct dev_context *devc; | |
56 | GSList *l; | |
57 | ||
58 | if (!(drvc = di->priv)) | |
59 | return SR_OK; | |
60 | ||
61 | for (l = drvc->instances; l; l = l->next) { | |
62 | if (!(sdi = l->data)) | |
63 | continue; | |
64 | if (!(devc = sdi->priv)) | |
65 | continue; | |
66 | sr_serial_dev_inst_free(devc->serial); | |
67 | sr_dev_inst_free(sdi); | |
68 | } | |
69 | ||
70 | g_slist_free(drvc->instances); | |
71 | drvc->instances = NULL; | |
72 | ||
73 | return SR_OK; | |
74 | } | |
75 | ||
76 | static int hw_init(struct sr_context *sr_ctx) | |
77 | { | |
78 | struct drv_context *drvc; | |
79 | ||
80 | if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) { | |
81 | sr_err("Driver context malloc failed."); | |
82 | return SR_ERR_MALLOC; | |
83 | } | |
84 | ||
85 | drvc->sr_ctx = sr_ctx; | |
86 | di->priv = drvc; | |
87 | ||
88 | return SR_OK; | |
89 | } | |
90 | ||
91 | static GSList *hw_scan(GSList *options) | |
92 | { | |
93 | struct drv_context *drvc; | |
94 | struct dev_context *devc; | |
95 | struct sr_dev_inst *sdi; | |
96 | struct sr_hwopt *opt; | |
97 | struct sr_probe *probe; | |
98 | GSList *devices, *l; | |
99 | const char *conn, *serialcomm; | |
100 | ||
101 | devices = NULL; | |
102 | drvc = di->priv; | |
103 | drvc->instances = NULL; | |
104 | ||
105 | conn = serialcomm = NULL; | |
106 | for (l = options; l; l = l->next) { | |
107 | if (!(opt = l->data)) { | |
108 | sr_err("Invalid option data, skipping."); | |
109 | continue; | |
110 | } | |
111 | switch (opt->hwopt) { | |
112 | case SR_HWOPT_CONN: | |
113 | conn = opt->value; | |
114 | break; | |
115 | case SR_HWOPT_SERIALCOMM: | |
116 | serialcomm = opt->value; | |
117 | break; | |
118 | default: | |
119 | sr_err("Unknown option %d, skipping.", opt->hwopt); | |
120 | break; | |
121 | } | |
122 | } | |
123 | if (!conn) | |
124 | return NULL; | |
125 | if (!serialcomm) | |
126 | serialcomm = SERIALCOMM; | |
127 | ||
128 | if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Tondaj", | |
129 | "SL-814", NULL))) { | |
130 | sr_err("Failed to create device instance."); | |
131 | return NULL; | |
132 | } | |
133 | ||
134 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { | |
135 | sr_err("Device context malloc failed."); | |
136 | return NULL; | |
137 | } | |
138 | ||
139 | if (!(devc->serial = sr_serial_dev_inst_new(conn, serialcomm))) | |
140 | return NULL; | |
141 | ||
142 | if (serial_open(devc->serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK) | |
143 | return NULL; | |
144 | ||
145 | sdi->priv = devc; | |
146 | sdi->driver = di; | |
147 | probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, probe_names[0]); | |
148 | if (!probe) { | |
149 | sr_err("Failed to create probe."); | |
150 | return NULL; | |
151 | } | |
152 | sdi->probes = g_slist_append(sdi->probes, probe); | |
153 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
154 | devices = g_slist_append(devices, sdi); | |
155 | ||
156 | return devices; | |
157 | } | |
158 | ||
159 | static GSList *hw_dev_list(void) | |
160 | { | |
161 | struct drv_context *drvc; | |
162 | ||
163 | drvc = di->priv; | |
164 | ||
165 | return drvc->instances; | |
166 | } | |
167 | ||
168 | static int hw_dev_open(struct sr_dev_inst *sdi) | |
169 | { | |
170 | struct dev_context *devc; | |
171 | ||
172 | devc = sdi->priv; | |
173 | ||
174 | if (serial_open(devc->serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK) | |
175 | return SR_ERR; | |
176 | ||
177 | sdi->status = SR_ST_ACTIVE; | |
178 | ||
179 | return SR_OK; | |
180 | } | |
181 | ||
182 | static int hw_dev_close(struct sr_dev_inst *sdi) | |
183 | { | |
184 | struct dev_context *devc; | |
185 | ||
186 | devc = sdi->priv; | |
187 | ||
188 | if (devc->serial && devc->serial->fd != -1) { | |
189 | serial_close(devc->serial); | |
190 | sdi->status = SR_ST_INACTIVE; | |
191 | } | |
192 | ||
193 | return SR_OK; | |
194 | } | |
195 | ||
196 | static int hw_cleanup(void) | |
197 | { | |
198 | clear_instances(); | |
199 | ||
200 | return SR_OK; | |
201 | } | |
202 | ||
203 | static int hw_info_get(int info_id, const void **data, | |
204 | const struct sr_dev_inst *sdi) | |
205 | { | |
206 | (void)sdi; | |
207 | ||
208 | switch (info_id) { | |
209 | case SR_DI_HWOPTS: | |
210 | *data = hwopts; | |
211 | break; | |
212 | case SR_DI_HWCAPS: | |
213 | *data = hwcaps; | |
214 | break; | |
215 | case SR_DI_NUM_PROBES: | |
216 | *data = GINT_TO_POINTER(1); | |
217 | break; | |
218 | case SR_DI_PROBE_NAMES: | |
219 | *data = probe_names; | |
220 | break; | |
221 | default: | |
222 | sr_err("Unknown info_id: %d.", info_id); | |
223 | return SR_ERR_ARG; | |
224 | } | |
225 | ||
226 | return SR_OK; | |
227 | } | |
228 | ||
229 | static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, | |
230 | const void *value) | |
231 | { | |
232 | struct dev_context *devc; | |
233 | ||
234 | if (sdi->status != SR_ST_ACTIVE) { | |
235 | sr_err("Device inactive, can't set config options."); | |
236 | return SR_ERR; | |
237 | } | |
238 | ||
239 | devc = sdi->priv; | |
240 | ||
241 | switch (hwcap) { | |
242 | case SR_HWCAP_LIMIT_SAMPLES: | |
243 | devc->limit_samples = *(const uint64_t *)value; | |
244 | sr_dbg("Setting sample limit to %" PRIu64 ".", | |
245 | devc->limit_samples); | |
246 | break; | |
247 | default: | |
248 | sr_err("Unknown hardware capability: %d.", hwcap); | |
249 | return SR_ERR_ARG; | |
250 | } | |
251 | ||
252 | return SR_OK; | |
253 | } | |
254 | ||
255 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, | |
256 | void *cb_data) | |
257 | { | |
258 | struct sr_datafeed_packet packet; | |
259 | struct sr_datafeed_header header; | |
260 | struct sr_datafeed_meta_analog meta; | |
261 | struct dev_context *devc; | |
262 | ||
263 | devc = sdi->priv; | |
264 | devc->cb_data = cb_data; | |
265 | ||
266 | /* Send header packet to the session bus. */ | |
267 | sr_dbg("Sending SR_DF_HEADER."); | |
268 | packet.type = SR_DF_HEADER; | |
269 | packet.payload = (uint8_t *)&header; | |
270 | header.feed_version = 1; | |
271 | gettimeofday(&header.starttime, NULL); | |
272 | sr_session_send(devc->cb_data, &packet); | |
273 | ||
274 | /* Send metadata about the SR_DF_ANALOG packets to come. */ | |
275 | sr_dbg("Sending SR_DF_META_ANALOG."); | |
276 | packet.type = SR_DF_META_ANALOG; | |
277 | packet.payload = &meta; | |
278 | meta.num_probes = 1; | |
279 | sr_session_send(devc->cb_data, &packet); | |
280 | ||
281 | /* Poll every 500ms, or whenever some data comes in. */ | |
282 | sr_source_add(devc->serial->fd, G_IO_IN, 500, | |
283 | tondaj_sl_814_receive_data, (void *)sdi); | |
284 | ||
285 | return SR_OK; | |
286 | } | |
287 | ||
288 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
289 | { | |
290 | int ret, final_ret; | |
291 | struct sr_datafeed_packet packet; | |
292 | struct dev_context *devc; | |
293 | ||
294 | final_ret = SR_OK; | |
295 | ||
296 | if (sdi->status != SR_ST_ACTIVE) { | |
297 | sr_err("Device inactive, can't stop acquisition."); | |
298 | return SR_ERR; | |
299 | } | |
300 | ||
301 | devc = sdi->priv; | |
302 | ||
303 | if ((ret = sr_source_remove(devc->serial->fd)) < 0) { | |
304 | sr_err("Error removing source: %d.", ret); | |
305 | final_ret = SR_ERR; | |
306 | } | |
307 | ||
308 | if ((ret = hw_dev_close(sdi)) < 0) { | |
309 | sr_err("Error closing device: %d.", ret); | |
310 | final_ret = SR_ERR; | |
311 | } | |
312 | ||
313 | /* Send end packet to the session bus. */ | |
314 | sr_dbg("Sending SR_DF_END."); | |
315 | packet.type = SR_DF_END; | |
316 | sr_session_send(cb_data, &packet); | |
317 | ||
318 | return final_ret; | |
319 | } | |
320 | ||
321 | SR_PRIV struct sr_dev_driver tondaj_sl_814_driver_info = { | |
322 | .name = "tondaj-sl-814", | |
323 | .longname = "Tondaj SL-814", | |
324 | .api_version = 1, | |
325 | .init = hw_init, | |
326 | .cleanup = hw_cleanup, | |
327 | .scan = hw_scan, | |
328 | .dev_list = hw_dev_list, | |
329 | .dev_clear = clear_instances, | |
330 | .dev_open = hw_dev_open, | |
331 | .dev_close = hw_dev_close, | |
332 | .info_get = hw_info_get, | |
333 | .dev_config_set = hw_dev_config_set, | |
334 | .dev_acquisition_start = hw_dev_acquisition_start, | |
335 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
336 | .priv = NULL, | |
337 | }; |