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79081ec8 UH |
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 | ||
fdbcb86d | 40 | SR_PRIV struct sr_dev_driver uni_t_ut61d_driver_info; |
fdbcb86d | 41 | SR_PRIV struct sr_dev_driver voltcraft_vc820_driver_info; |
6ac5f892 UH |
42 | |
43 | static struct sr_dev_driver *di_ut61d = &uni_t_ut61d_driver_info; | |
fdbcb86d | 44 | static struct sr_dev_driver *di_vc820 = &voltcraft_vc820_driver_info; |
79081ec8 | 45 | |
6ac5f892 UH |
46 | /* After hw_init() this will point to a device-specific entry (see above). */ |
47 | static struct sr_dev_driver *di = NULL; | |
48 | ||
79081ec8 UH |
49 | static int clear_instances(void) |
50 | { | |
51 | /* TODO: Use common code later. */ | |
52 | ||
53 | return SR_OK; | |
54 | } | |
55 | ||
fdbcb86d | 56 | static int hw_init(int dmm) |
79081ec8 UH |
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 | ||
fdbcb86d | 72 | if (dmm == UNI_T_UT61D) |
6ac5f892 | 73 | di = di_ut61d; |
fdbcb86d | 74 | else if (dmm == VOLTCRAFT_VC820) |
6ac5f892 | 75 | di = di_vc820; |
8c1adf37 | 76 | sr_dbg("Selected '%s' subdriver.", di->name); |
6ac5f892 UH |
77 | |
78 | di->priv = drvc; | |
79081ec8 UH |
79 | |
80 | return SR_OK; | |
81 | } | |
82 | ||
fdbcb86d UH |
83 | static int hw_init_ut61d(void) |
84 | { | |
85 | return hw_init(UNI_T_UT61D); | |
86 | } | |
87 | ||
88 | static int hw_init_vc820(void) | |
89 | { | |
90 | return hw_init(VOLTCRAFT_VC820); | |
91 | } | |
92 | ||
6ac5f892 | 93 | static GSList *hw_scan(GSList *options) |
79081ec8 | 94 | { |
41d9427f | 95 | GSList *devices, *l; |
79081ec8 | 96 | struct sr_dev_inst *sdi; |
41d9427f | 97 | struct dev_context *devc; |
79081ec8 | 98 | struct drv_context *drvc; |
41d9427f UH |
99 | struct sr_probe *probe; |
100 | struct libusb_device *ldev; | |
101 | int i, devcnt; | |
79081ec8 UH |
102 | |
103 | (void)options; | |
104 | ||
6ac5f892 | 105 | drvc = di->priv; |
79081ec8 | 106 | |
41d9427f UH |
107 | devices = NULL; |
108 | ||
109 | if (!(l = sr_usb_connect(NULL, "1a86.e008"))) | |
79081ec8 UH |
110 | return NULL; |
111 | ||
41d9427f UH |
112 | for (i = 0; i < (int)g_slist_length(l); i++) { |
113 | ldev = (struct libusb_device *)l->data; | |
114 | ||
115 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { | |
116 | sr_err("Device context malloc failed."); | |
117 | return NULL; | |
118 | } | |
119 | ||
120 | devcnt = g_slist_length(drvc->instances); | |
121 | if (!(sdi = sr_dev_inst_new(devcnt, SR_ST_INACTIVE, | |
122 | di->longname, NULL, NULL))) { | |
123 | sr_err("sr_dev_inst_new returned NULL."); | |
124 | return NULL; | |
125 | } | |
126 | sdi->priv = devc; | |
6ac5f892 | 127 | sdi->driver = di; |
41d9427f UH |
128 | if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1"))) |
129 | return NULL; | |
130 | sdi->probes = g_slist_append(sdi->probes, probe); | |
131 | devc->usb = sr_usb_dev_inst_new( | |
132 | libusb_get_bus_number(ldev), | |
133 | libusb_get_device_address(ldev), NULL); | |
79081ec8 | 134 | drvc->instances = g_slist_append(drvc->instances, l->data); |
41d9427f | 135 | devices = g_slist_append(devices, sdi); |
79081ec8 UH |
136 | } |
137 | ||
138 | return devices; | |
139 | } | |
140 | ||
6ac5f892 | 141 | static GSList *hw_dev_list(void) |
79081ec8 UH |
142 | { |
143 | struct drv_context *drvc; | |
144 | ||
6ac5f892 | 145 | drvc = di->priv; |
79081ec8 UH |
146 | |
147 | return drvc->instances; | |
148 | } | |
149 | ||
150 | static int hw_dev_open(struct sr_dev_inst *sdi) | |
151 | { | |
41d9427f UH |
152 | struct dev_context *devc; |
153 | ||
154 | devc = sdi->priv; | |
155 | ||
156 | return sr_usb_open(NULL, devc->usb); | |
79081ec8 UH |
157 | } |
158 | ||
159 | static int hw_dev_close(struct sr_dev_inst *sdi) | |
160 | { | |
161 | (void)sdi; | |
162 | ||
163 | /* TODO */ | |
164 | ||
165 | return SR_OK; | |
166 | } | |
167 | ||
168 | static int hw_cleanup(void) | |
169 | { | |
170 | clear_instances(); | |
171 | ||
172 | // libusb_exit(NULL); | |
173 | ||
174 | return SR_OK; | |
175 | } | |
176 | ||
177 | static int hw_info_get(int info_id, const void **data, | |
178 | const struct sr_dev_inst *sdi) | |
179 | { | |
180 | (void)sdi; | |
181 | ||
182 | sr_spew("Backend requested info_id %d.", info_id); | |
183 | ||
184 | switch (info_id) { | |
185 | case SR_DI_HWCAPS: | |
186 | *data = hwcaps; | |
187 | sr_spew("%s: Returning hwcaps.", __func__); | |
188 | break; | |
189 | case SR_DI_NUM_PROBES: | |
190 | *data = GINT_TO_POINTER(1); | |
191 | sr_spew("%s: Returning number of probes.", __func__); | |
192 | break; | |
193 | case SR_DI_PROBE_NAMES: | |
194 | *data = probe_names; | |
195 | sr_spew("%s: Returning probe names.", __func__); | |
196 | break; | |
197 | case SR_DI_SAMPLERATES: | |
198 | /* TODO: Get rid of this. */ | |
199 | *data = NULL; | |
200 | sr_spew("%s: Returning samplerates.", __func__); | |
201 | return SR_ERR_ARG; | |
202 | break; | |
203 | case SR_DI_CUR_SAMPLERATE: | |
204 | /* TODO: Get rid of this. */ | |
205 | *data = NULL; | |
206 | sr_spew("%s: Returning current samplerate.", __func__); | |
207 | return SR_ERR_ARG; | |
208 | break; | |
209 | default: | |
210 | sr_err("%s: Unknown info_id %d.", __func__, info_id); | |
211 | return SR_ERR_ARG; | |
212 | break; | |
213 | } | |
214 | ||
215 | return SR_OK; | |
216 | } | |
217 | ||
218 | static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, | |
219 | const void *value) | |
220 | { | |
221 | struct dev_context *devc; | |
222 | ||
223 | devc = sdi->priv; | |
224 | ||
225 | switch (hwcap) { | |
226 | case SR_HWCAP_LIMIT_MSEC: | |
227 | /* TODO: Not yet implemented. */ | |
228 | if (*(const uint64_t *)value == 0) { | |
229 | sr_err("Time limit cannot be 0."); | |
230 | return SR_ERR; | |
231 | } | |
232 | devc->limit_msec = *(const uint64_t *)value; | |
233 | sr_dbg("Setting time limit to %" PRIu64 "ms.", | |
234 | devc->limit_msec); | |
235 | break; | |
236 | case SR_HWCAP_LIMIT_SAMPLES: | |
237 | if (*(const uint64_t *)value == 0) { | |
238 | sr_err("Sample limit cannot be 0."); | |
239 | return SR_ERR; | |
240 | } | |
241 | devc->limit_samples = *(const uint64_t *)value; | |
242 | sr_dbg("Setting sample limit to %" PRIu64 ".", | |
243 | devc->limit_samples); | |
244 | break; | |
245 | default: | |
246 | sr_err("Unknown capability: %d.", hwcap); | |
247 | return SR_ERR; | |
248 | break; | |
249 | } | |
250 | ||
251 | return SR_OK; | |
252 | } | |
253 | ||
254 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, | |
6ac5f892 | 255 | void *cb_data) |
79081ec8 UH |
256 | { |
257 | struct sr_datafeed_packet packet; | |
258 | struct sr_datafeed_header header; | |
259 | struct sr_datafeed_meta_analog meta; | |
260 | struct dev_context *devc; | |
261 | ||
262 | devc = sdi->priv; | |
263 | ||
264 | sr_dbg("Starting acquisition."); | |
265 | ||
266 | devc->cb_data = cb_data; | |
267 | ||
268 | /* Send header packet to the session bus. */ | |
269 | sr_dbg("Sending SR_DF_HEADER."); | |
270 | packet.type = SR_DF_HEADER; | |
271 | packet.payload = (uint8_t *)&header; | |
272 | header.feed_version = 1; | |
273 | gettimeofday(&header.starttime, NULL); | |
274 | sr_session_send(devc->cb_data, &packet); | |
275 | ||
276 | /* Send metadata about the SR_DF_ANALOG packets to come. */ | |
277 | sr_dbg("Sending SR_DF_META_ANALOG."); | |
278 | packet.type = SR_DF_META_ANALOG; | |
279 | packet.payload = &meta; | |
280 | meta.num_probes = 1; | |
281 | sr_session_send(devc->cb_data, &packet); | |
282 | ||
6ac5f892 | 283 | if (!strcmp(di->name, "uni-t-ut61d")) { |
fdbcb86d UH |
284 | sr_source_add(0, 0, 10 /* poll_timeout */, |
285 | uni_t_ut61d_receive_data, (void *)sdi); | |
6ac5f892 | 286 | } else if (!strcmp(di->name, "voltcraft-vc820")) { |
fdbcb86d UH |
287 | sr_source_add(0, 0, 10 /* poll_timeout */, |
288 | voltcraft_vc820_receive_data, (void *)sdi); | |
289 | } | |
79081ec8 UH |
290 | |
291 | return SR_OK; | |
292 | } | |
293 | ||
69b07d14 | 294 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
79081ec8 UH |
295 | { |
296 | struct sr_datafeed_packet packet; | |
297 | ||
298 | (void)sdi; | |
299 | ||
300 | sr_dbg("Stopping acquisition."); | |
301 | ||
302 | /* Send end packet to the session bus. */ | |
303 | sr_dbg("Sending SR_DF_END."); | |
304 | packet.type = SR_DF_END; | |
305 | sr_session_send(cb_data, &packet); | |
306 | ||
307 | /* TODO? */ | |
308 | sr_source_remove(0); | |
309 | ||
310 | return SR_OK; | |
311 | } | |
312 | ||
fdbcb86d UH |
313 | SR_PRIV struct sr_dev_driver uni_t_ut61d_driver_info = { |
314 | .name = "uni-t-ut61d", | |
315 | .longname = "UNI-T UT61D", | |
316 | .api_version = 1, | |
317 | .init = hw_init_ut61d, | |
318 | .cleanup = hw_cleanup, | |
6ac5f892 UH |
319 | .scan = hw_scan, |
320 | .dev_list = hw_dev_list, | |
fdbcb86d UH |
321 | .dev_clear = clear_instances, |
322 | .dev_open = hw_dev_open, | |
323 | .dev_close = hw_dev_close, | |
324 | .info_get = hw_info_get, | |
325 | .dev_config_set = hw_dev_config_set, | |
6ac5f892 | 326 | .dev_acquisition_start = hw_dev_acquisition_start, |
fdbcb86d UH |
327 | .dev_acquisition_stop = hw_dev_acquisition_stop, |
328 | .priv = NULL, | |
329 | }; | |
330 | ||
331 | SR_PRIV struct sr_dev_driver voltcraft_vc820_driver_info = { | |
332 | .name = "voltcraft-vc820", | |
333 | .longname = "Voltcraft VC-820", | |
79081ec8 | 334 | .api_version = 1, |
fdbcb86d | 335 | .init = hw_init_vc820, |
79081ec8 | 336 | .cleanup = hw_cleanup, |
6ac5f892 UH |
337 | .scan = hw_scan, |
338 | .dev_list = hw_dev_list, | |
79081ec8 UH |
339 | .dev_clear = clear_instances, |
340 | .dev_open = hw_dev_open, | |
341 | .dev_close = hw_dev_close, | |
342 | .info_get = hw_info_get, | |
343 | .dev_config_set = hw_dev_config_set, | |
6ac5f892 | 344 | .dev_acquisition_start = hw_dev_acquisition_start, |
79081ec8 UH |
345 | .dev_acquisition_stop = hw_dev_acquisition_stop, |
346 | .priv = NULL, | |
347 | }; |