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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 <stdlib.h> | |
22 | #include <string.h> | |
23 | #include "libsigrok.h" | |
24 | #include "libsigrok-internal.h" | |
25 | #include "protocol.h" | |
26 | ||
27 | static const int hwcaps[] = { | |
28 | SR_HWCAP_MULTIMETER, | |
29 | SR_HWCAP_LIMIT_SAMPLES, | |
30 | SR_HWCAP_LIMIT_MSEC, | |
31 | SR_HWCAP_CONTINUOUS, | |
32 | 0, | |
33 | }; | |
34 | ||
35 | static const char *probe_names[] = { | |
36 | "Probe", | |
37 | NULL, | |
38 | }; | |
39 | ||
40 | SR_PRIV struct sr_dev_driver uni_t_ut61d_driver_info; | |
41 | SR_PRIV struct sr_dev_driver voltcraft_vc820_driver_info; | |
42 | ||
43 | static struct sr_dev_driver *di_ut61d = &uni_t_ut61d_driver_info; | |
44 | static struct sr_dev_driver *di_vc820 = &voltcraft_vc820_driver_info; | |
45 | ||
46 | /* After hw_init() this will point to a device-specific entry (see above). */ | |
47 | static struct sr_dev_driver *di = NULL; | |
48 | ||
49 | static int clear_instances(void) | |
50 | { | |
51 | /* TODO: Use common code later. */ | |
52 | ||
53 | return SR_OK; | |
54 | } | |
55 | ||
56 | static int hw_init(struct sr_context *sr_ctx, int dmm) | |
57 | { | |
58 | int ret; | |
59 | struct drv_context *drvc; | |
60 | ||
61 | if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) { | |
62 | sr_err("Driver context malloc failed."); | |
63 | return SR_ERR_MALLOC; | |
64 | } | |
65 | ||
66 | if ((ret = libusb_init(NULL)) < 0) { | |
67 | sr_err("Failed to initialize libusb: %s.", | |
68 | libusb_error_name(ret)); | |
69 | return SR_ERR; | |
70 | } | |
71 | ||
72 | if (dmm == UNI_T_UT61D) | |
73 | di = di_ut61d; | |
74 | else if (dmm == VOLTCRAFT_VC820) | |
75 | di = di_vc820; | |
76 | sr_dbg("Selected '%s' subdriver.", di->name); | |
77 | ||
78 | drvc->sr_ctx = sr_ctx; | |
79 | di->priv = drvc; | |
80 | ||
81 | return SR_OK; | |
82 | } | |
83 | ||
84 | static int hw_init_ut61d(struct sr_context *sr_ctx) | |
85 | { | |
86 | return hw_init(sr_ctx, UNI_T_UT61D); | |
87 | } | |
88 | ||
89 | static int hw_init_vc820(struct sr_context *sr_ctx) | |
90 | { | |
91 | return hw_init(sr_ctx, VOLTCRAFT_VC820); | |
92 | } | |
93 | ||
94 | static GSList *hw_scan(GSList *options) | |
95 | { | |
96 | GSList *devices, *l; | |
97 | struct sr_dev_inst *sdi; | |
98 | struct dev_context *devc; | |
99 | struct drv_context *drvc; | |
100 | struct sr_probe *probe; | |
101 | struct libusb_device *ldev; | |
102 | int i, devcnt; | |
103 | ||
104 | (void)options; | |
105 | ||
106 | drvc = di->priv; | |
107 | ||
108 | devices = NULL; | |
109 | ||
110 | if (!(l = sr_usb_connect(NULL, "1a86.e008"))) | |
111 | return NULL; | |
112 | ||
113 | for (i = 0; i < (int)g_slist_length(l); i++) { | |
114 | ldev = (struct libusb_device *)l->data; | |
115 | ||
116 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { | |
117 | sr_err("Device context malloc failed."); | |
118 | return NULL; | |
119 | } | |
120 | ||
121 | devcnt = g_slist_length(drvc->instances); | |
122 | if (!(sdi = sr_dev_inst_new(devcnt, SR_ST_INACTIVE, | |
123 | di->longname, NULL, NULL))) { | |
124 | sr_err("sr_dev_inst_new returned NULL."); | |
125 | return NULL; | |
126 | } | |
127 | sdi->priv = devc; | |
128 | sdi->driver = di; | |
129 | if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1"))) | |
130 | return NULL; | |
131 | sdi->probes = g_slist_append(sdi->probes, probe); | |
132 | devc->usb = sr_usb_dev_inst_new( | |
133 | libusb_get_bus_number(ldev), | |
134 | libusb_get_device_address(ldev), NULL); | |
135 | drvc->instances = g_slist_append(drvc->instances, l->data); | |
136 | devices = g_slist_append(devices, sdi); | |
137 | } | |
138 | ||
139 | return devices; | |
140 | } | |
141 | ||
142 | static GSList *hw_dev_list(void) | |
143 | { | |
144 | struct drv_context *drvc; | |
145 | ||
146 | drvc = di->priv; | |
147 | ||
148 | return drvc->instances; | |
149 | } | |
150 | ||
151 | static int hw_dev_open(struct sr_dev_inst *sdi) | |
152 | { | |
153 | struct dev_context *devc; | |
154 | ||
155 | devc = sdi->priv; | |
156 | ||
157 | return sr_usb_open(NULL, devc->usb); | |
158 | } | |
159 | ||
160 | static int hw_dev_close(struct sr_dev_inst *sdi) | |
161 | { | |
162 | (void)sdi; | |
163 | ||
164 | /* TODO */ | |
165 | ||
166 | return SR_OK; | |
167 | } | |
168 | ||
169 | static int hw_cleanup(void) | |
170 | { | |
171 | clear_instances(); | |
172 | ||
173 | // libusb_exit(NULL); | |
174 | ||
175 | return SR_OK; | |
176 | } | |
177 | ||
178 | static int hw_info_get(int info_id, const void **data, | |
179 | const struct sr_dev_inst *sdi) | |
180 | { | |
181 | (void)sdi; | |
182 | ||
183 | sr_spew("Backend requested info_id %d.", info_id); | |
184 | ||
185 | switch (info_id) { | |
186 | case SR_DI_HWCAPS: | |
187 | *data = hwcaps; | |
188 | sr_spew("%s: Returning hwcaps.", __func__); | |
189 | break; | |
190 | case SR_DI_NUM_PROBES: | |
191 | *data = GINT_TO_POINTER(1); | |
192 | sr_spew("%s: Returning number of probes.", __func__); | |
193 | break; | |
194 | case SR_DI_PROBE_NAMES: | |
195 | *data = probe_names; | |
196 | sr_spew("%s: Returning probe names.", __func__); | |
197 | break; | |
198 | case SR_DI_SAMPLERATES: | |
199 | /* TODO: Get rid of this. */ | |
200 | *data = NULL; | |
201 | sr_spew("%s: Returning samplerates.", __func__); | |
202 | return SR_ERR_ARG; | |
203 | break; | |
204 | case SR_DI_CUR_SAMPLERATE: | |
205 | /* TODO: Get rid of this. */ | |
206 | *data = NULL; | |
207 | sr_spew("%s: Returning current samplerate.", __func__); | |
208 | return SR_ERR_ARG; | |
209 | break; | |
210 | default: | |
211 | sr_err("%s: Unknown info_id %d.", __func__, info_id); | |
212 | return SR_ERR_ARG; | |
213 | break; | |
214 | } | |
215 | ||
216 | return SR_OK; | |
217 | } | |
218 | ||
219 | static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, | |
220 | const void *value) | |
221 | { | |
222 | struct dev_context *devc; | |
223 | ||
224 | devc = sdi->priv; | |
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("Time limit cannot 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 | if (*(const uint64_t *)value == 0) { | |
239 | sr_err("Sample limit cannot be 0."); | |
240 | return SR_ERR; | |
241 | } | |
242 | devc->limit_samples = *(const uint64_t *)value; | |
243 | sr_dbg("Setting sample limit to %" PRIu64 ".", | |
244 | devc->limit_samples); | |
245 | break; | |
246 | default: | |
247 | sr_err("Unknown capability: %d.", hwcap); | |
248 | return SR_ERR; | |
249 | break; | |
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 | ||
265 | sr_dbg("Starting acquisition."); | |
266 | ||
267 | devc->cb_data = cb_data; | |
268 | ||
269 | /* Send header packet to the session bus. */ | |
270 | sr_dbg("Sending SR_DF_HEADER."); | |
271 | packet.type = SR_DF_HEADER; | |
272 | packet.payload = (uint8_t *)&header; | |
273 | header.feed_version = 1; | |
274 | gettimeofday(&header.starttime, NULL); | |
275 | sr_session_send(devc->cb_data, &packet); | |
276 | ||
277 | /* Send metadata about the SR_DF_ANALOG packets to come. */ | |
278 | sr_dbg("Sending SR_DF_META_ANALOG."); | |
279 | packet.type = SR_DF_META_ANALOG; | |
280 | packet.payload = &meta; | |
281 | meta.num_probes = 1; | |
282 | sr_session_send(devc->cb_data, &packet); | |
283 | ||
284 | if (!strcmp(di->name, "uni-t-ut61d")) { | |
285 | sr_source_add(0, 0, 10 /* poll_timeout */, | |
286 | uni_t_ut61d_receive_data, (void *)sdi); | |
287 | } else if (!strcmp(di->name, "voltcraft-vc820")) { | |
288 | sr_source_add(0, 0, 10 /* poll_timeout */, | |
289 | voltcraft_vc820_receive_data, (void *)sdi); | |
290 | } | |
291 | ||
292 | return SR_OK; | |
293 | } | |
294 | ||
295 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
296 | { | |
297 | struct sr_datafeed_packet packet; | |
298 | ||
299 | (void)sdi; | |
300 | ||
301 | sr_dbg("Stopping acquisition."); | |
302 | ||
303 | /* Send end packet to the session bus. */ | |
304 | sr_dbg("Sending SR_DF_END."); | |
305 | packet.type = SR_DF_END; | |
306 | sr_session_send(cb_data, &packet); | |
307 | ||
308 | /* TODO? */ | |
309 | sr_source_remove(0); | |
310 | ||
311 | return SR_OK; | |
312 | } | |
313 | ||
314 | SR_PRIV struct sr_dev_driver uni_t_ut61d_driver_info = { | |
315 | .name = "uni-t-ut61d", | |
316 | .longname = "UNI-T UT61D", | |
317 | .api_version = 1, | |
318 | .init = hw_init_ut61d, | |
319 | .cleanup = hw_cleanup, | |
320 | .scan = hw_scan, | |
321 | .dev_list = hw_dev_list, | |
322 | .dev_clear = clear_instances, | |
323 | .dev_open = hw_dev_open, | |
324 | .dev_close = hw_dev_close, | |
325 | .info_get = hw_info_get, | |
326 | .dev_config_set = hw_dev_config_set, | |
327 | .dev_acquisition_start = hw_dev_acquisition_start, | |
328 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
329 | .priv = NULL, | |
330 | }; | |
331 | ||
332 | SR_PRIV struct sr_dev_driver voltcraft_vc820_driver_info = { | |
333 | .name = "voltcraft-vc820", | |
334 | .longname = "Voltcraft VC-820", | |
335 | .api_version = 1, | |
336 | .init = hw_init_vc820, | |
337 | .cleanup = hw_cleanup, | |
338 | .scan = hw_scan, | |
339 | .dev_list = hw_dev_list, | |
340 | .dev_clear = clear_instances, | |
341 | .dev_open = hw_dev_open, | |
342 | .dev_close = hw_dev_close, | |
343 | .info_get = hw_info_get, | |
344 | .dev_config_set = hw_dev_config_set, | |
345 | .dev_acquisition_start = hw_dev_acquisition_start, | |
346 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
347 | .priv = NULL, | |
348 | }; |