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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 | ||
33 | static const int hwopts[] = { | |
34 | SR_HWOPT_CONN, | |
35 | SR_HWOPT_SERIALCOMM, | |
36 | 0, | |
37 | }; | |
38 | ||
39 | static const int hwcaps[] = { | |
40 | SR_HWCAP_SOUNDLEVELMETER, | |
41 | SR_HWCAP_LIMIT_SAMPLES, | |
42 | SR_HWCAP_LIMIT_MSEC, | |
43 | SR_HWCAP_CONTINUOUS, | |
44 | 0, | |
45 | }; | |
46 | ||
47 | SR_PRIV struct sr_dev_driver colead_slm_driver_info; | |
48 | static struct sr_dev_driver *di = &colead_slm_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 | g_slist_free(drvc->instances); | |
70 | drvc->instances = NULL; | |
71 | ||
72 | return SR_OK; | |
73 | } | |
74 | ||
75 | static int hw_init(struct sr_context *sr_ctx) | |
76 | { | |
77 | struct drv_context *drvc; | |
78 | ||
79 | if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) { | |
80 | sr_err("Driver context malloc failed."); | |
81 | return SR_ERR; | |
82 | } | |
83 | ||
84 | drvc->sr_ctx = sr_ctx; | |
85 | di->priv = drvc; | |
86 | ||
87 | return SR_OK; | |
88 | } | |
89 | ||
90 | static GSList *hw_scan(GSList *options) | |
91 | { | |
92 | struct drv_context *drvc; | |
93 | struct dev_context *devc; | |
94 | struct sr_dev_inst *sdi; | |
95 | struct sr_config *src; | |
96 | struct sr_probe *probe; | |
97 | GSList *devices, *l; | |
98 | const char *conn, *serialcomm; | |
99 | ||
100 | devices = NULL; | |
101 | drvc = di->priv; | |
102 | drvc->instances = NULL; | |
103 | ||
104 | conn = serialcomm = NULL; | |
105 | for (l = options; l; l = l->next) { | |
106 | src = l->data; | |
107 | switch (src->key) { | |
108 | case SR_HWOPT_CONN: | |
109 | conn = src->value; | |
110 | break; | |
111 | case SR_HWOPT_SERIALCOMM: | |
112 | serialcomm = src->value; | |
113 | break; | |
114 | } | |
115 | } | |
116 | if (!conn) | |
117 | return NULL; | |
118 | if (!serialcomm) | |
119 | serialcomm = SERIALCOMM; | |
120 | ||
121 | if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Colead", | |
122 | "SL-5868P", NULL))) | |
123 | return NULL; | |
124 | ||
125 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { | |
126 | sr_dbg("failed to malloc devc"); | |
127 | return NULL; | |
128 | } | |
129 | ||
130 | if (!(devc->serial = sr_serial_dev_inst_new(conn, serialcomm))) | |
131 | return NULL; | |
132 | ||
133 | sdi->priv = devc; | |
134 | sdi->driver = di; | |
135 | if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1"))) | |
136 | return NULL; | |
137 | sdi->probes = g_slist_append(sdi->probes, probe); | |
138 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
139 | devices = g_slist_append(devices, sdi); | |
140 | ||
141 | return devices; | |
142 | } | |
143 | ||
144 | static GSList *hw_dev_list(void) | |
145 | { | |
146 | struct drv_context *drvc; | |
147 | ||
148 | drvc = di->priv; | |
149 | ||
150 | return drvc->instances; | |
151 | } | |
152 | ||
153 | static int hw_dev_open(struct sr_dev_inst *sdi) | |
154 | { | |
155 | struct dev_context *devc; | |
156 | ||
157 | if (!(devc = sdi->priv)) { | |
158 | sr_err("sdi->priv was NULL."); | |
159 | return SR_ERR_BUG; | |
160 | } | |
161 | ||
162 | if (serial_open(devc->serial, SERIAL_RDWR) != SR_OK) | |
163 | return SR_ERR; | |
164 | ||
165 | sdi->status = SR_ST_ACTIVE; | |
166 | ||
167 | return SR_OK; | |
168 | } | |
169 | ||
170 | static int hw_dev_close(struct sr_dev_inst *sdi) | |
171 | { | |
172 | struct dev_context *devc; | |
173 | ||
174 | if (!(devc = sdi->priv)) { | |
175 | sr_err("sdi->priv was NULL."); | |
176 | return SR_ERR_BUG; | |
177 | } | |
178 | ||
179 | if (devc->serial && devc->serial->fd != -1) { | |
180 | serial_close(devc->serial); | |
181 | sdi->status = SR_ST_INACTIVE; | |
182 | } | |
183 | ||
184 | return SR_OK; | |
185 | } | |
186 | ||
187 | static int hw_cleanup(void) | |
188 | { | |
189 | clear_instances(); | |
190 | ||
191 | return SR_OK; | |
192 | } | |
193 | ||
194 | static int hw_info_get(int info_id, const void **data, | |
195 | const struct sr_dev_inst *sdi) | |
196 | { | |
197 | (void)sdi; | |
198 | ||
199 | switch (info_id) { | |
200 | case SR_DI_HWOPTS: | |
201 | *data = hwopts; | |
202 | break; | |
203 | case SR_DI_HWCAPS: | |
204 | *data = hwcaps; | |
205 | break; | |
206 | default: | |
207 | return SR_ERR_ARG; | |
208 | } | |
209 | ||
210 | return SR_OK; | |
211 | } | |
212 | ||
213 | static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, | |
214 | const void *value) | |
215 | { | |
216 | struct dev_context *devc; | |
217 | ||
218 | if (sdi->status != SR_ST_ACTIVE) | |
219 | return SR_ERR; | |
220 | ||
221 | if (!(devc = sdi->priv)) { | |
222 | sr_err("sdi->priv was NULL."); | |
223 | return SR_ERR_BUG; | |
224 | } | |
225 | ||
226 | switch (hwcap) { | |
227 | case SR_HWCAP_LIMIT_MSEC: | |
228 | /* TODO: not yet implemented */ | |
229 | if (*(const uint64_t *)value == 0) { | |
230 | sr_err("LIMIT_MSEC can't be 0."); | |
231 | return SR_ERR; | |
232 | } | |
233 | devc->limit_msec = *(const uint64_t *)value; | |
234 | sr_dbg("Setting time limit to %" PRIu64 "ms.", | |
235 | devc->limit_msec); | |
236 | break; | |
237 | case SR_HWCAP_LIMIT_SAMPLES: | |
238 | devc->limit_samples = *(const uint64_t *)value; | |
239 | sr_dbg("Setting sample limit to %" PRIu64 ".", | |
240 | devc->limit_samples); | |
241 | break; | |
242 | default: | |
243 | sr_err("Unknown capability: %d.", hwcap); | |
244 | return SR_ERR; | |
245 | break; | |
246 | } | |
247 | ||
248 | return SR_OK; | |
249 | } | |
250 | ||
251 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, | |
252 | void *cb_data) | |
253 | { | |
254 | struct sr_datafeed_packet packet; | |
255 | struct sr_datafeed_header header; | |
256 | struct dev_context *devc; | |
257 | ||
258 | if (!(devc = sdi->priv)) { | |
259 | sr_err("sdi->priv was NULL."); | |
260 | return SR_ERR_BUG; | |
261 | } | |
262 | ||
263 | sr_dbg("Starting acquisition."); | |
264 | ||
265 | devc->cb_data = cb_data; | |
266 | ||
267 | /* Send header packet to the session bus. */ | |
268 | sr_dbg("Sending SR_DF_HEADER."); | |
269 | packet.type = SR_DF_HEADER; | |
270 | packet.payload = (uint8_t *)&header; | |
271 | header.feed_version = 1; | |
272 | gettimeofday(&header.starttime, NULL); | |
273 | sr_session_send(devc->cb_data, &packet); | |
274 | ||
275 | /* Poll every 150ms, or whenever some data comes in. */ | |
276 | sr_source_add(devc->serial->fd, G_IO_IN, 150, colead_slm_receive_data, | |
277 | (void *)sdi); | |
278 | ||
279 | return SR_OK; | |
280 | } | |
281 | ||
282 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
283 | { | |
284 | struct sr_datafeed_packet packet; | |
285 | struct dev_context *devc; | |
286 | ||
287 | if (sdi->status != SR_ST_ACTIVE) | |
288 | return SR_ERR; | |
289 | ||
290 | if (!(devc = sdi->priv)) { | |
291 | sr_err("sdi->priv was NULL."); | |
292 | return SR_ERR_BUG; | |
293 | } | |
294 | ||
295 | sr_dbg("Stopping acquisition."); | |
296 | ||
297 | sr_source_remove(devc->serial->fd); | |
298 | hw_dev_close((struct sr_dev_inst *)sdi); | |
299 | ||
300 | /* Send end packet to the session bus. */ | |
301 | sr_dbg("Sending SR_DF_END."); | |
302 | packet.type = SR_DF_END; | |
303 | sr_session_send(cb_data, &packet); | |
304 | ||
305 | return SR_OK; | |
306 | } | |
307 | ||
308 | SR_PRIV struct sr_dev_driver colead_slm_driver_info = { | |
309 | .name = "colead-slm", | |
310 | .longname = "Colead SLM", | |
311 | .api_version = 1, | |
312 | .init = hw_init, | |
313 | .cleanup = hw_cleanup, | |
314 | .scan = hw_scan, | |
315 | .dev_list = hw_dev_list, | |
316 | .dev_clear = clear_instances, | |
317 | .dev_open = hw_dev_open, | |
318 | .dev_close = hw_dev_close, | |
319 | .info_get = hw_info_get, | |
320 | .dev_config_set = hw_dev_config_set, | |
321 | .dev_acquisition_start = hw_dev_acquisition_start, | |
322 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
323 | .priv = NULL, | |
324 | }; |