]>
Commit | Line | Data |
---|---|---|
ac3898d2 BV |
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 | ||
6ec6c43b | 20 | #include <config.h> |
ac3898d2 | 21 | #include <glib.h> |
7a360375 BV |
22 | #include <libusb.h> |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
c1aae900 | 25 | #include <libsigrok/libsigrok.h> |
fa773062 UH |
26 | #include "libsigrok-internal.h" |
27 | #include "protocol.h" | |
7a360375 BV |
28 | |
29 | #define VICTOR_VID 0x1244 | |
30 | #define VICTOR_PID 0xd237 | |
31 | #define VICTOR_VENDOR "Victor" | |
32 | #define VICTOR_INTERFACE 0 | |
1a46cc62 | 33 | #define VICTOR_ENDPOINT (LIBUSB_ENDPOINT_IN | 1) |
ac3898d2 BV |
34 | |
35 | SR_PRIV struct sr_dev_driver victor_dmm_driver_info; | |
695dc859 | 36 | static int dev_acquisition_stop(struct sr_dev_inst *sdi); |
7a360375 | 37 | |
55333928 BV |
38 | static const uint32_t drvopts[] = { |
39 | SR_CONF_MULTIMETER, | |
40 | }; | |
1beccaed | 41 | |
a0e0bb41 | 42 | static const uint32_t scanopts[] = { |
ac046ef8 BV |
43 | SR_CONF_CONN, |
44 | }; | |
45 | ||
f254bc4b | 46 | static const uint32_t devopts[] = { |
1953564a | 47 | SR_CONF_CONTINUOUS, |
5827f61b BV |
48 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET, |
49 | SR_CONF_LIMIT_MSEC | SR_CONF_SET, | |
55333928 | 50 | SR_CONF_CONN | SR_CONF_GET, |
7a360375 BV |
51 | }; |
52 | ||
4f840ce9 | 53 | static GSList *scan(struct sr_dev_driver *di, GSList *options) |
ac3898d2 BV |
54 | { |
55 | struct drv_context *drvc; | |
7a360375 BV |
56 | struct dev_context *devc; |
57 | struct sr_dev_inst *sdi; | |
7a360375 BV |
58 | struct libusb_device_descriptor des; |
59 | libusb_device **devlist; | |
ac3898d2 | 60 | GSList *devices; |
2a8f2d41 | 61 | int i; |
66c91e25 | 62 | char connection_id[64]; |
ac3898d2 BV |
63 | |
64 | (void)options; | |
65 | ||
41812aca | 66 | drvc = di->context; |
7a360375 | 67 | |
ac3898d2 | 68 | devices = NULL; |
d4abb463 | 69 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); |
7a360375 | 70 | for (i = 0; devlist[i]; i++) { |
2a8f2d41 | 71 | libusb_get_device_descriptor(devlist[i], &des); |
ac3898d2 | 72 | |
7a360375 BV |
73 | if (des.idVendor != VICTOR_VID || des.idProduct != VICTOR_PID) |
74 | continue; | |
75 | ||
66c91e25 SA |
76 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); |
77 | ||
aac29cc1 | 78 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
0af636be UH |
79 | sdi->status = SR_ST_INACTIVE; |
80 | sdi->vendor = g_strdup(VICTOR_VENDOR); | |
7a360375 | 81 | sdi->driver = di; |
66c91e25 | 82 | sdi->connection_id = g_strdup(connection_id); |
f57d8ffe | 83 | devc = g_malloc0(sizeof(struct dev_context)); |
cf9e86bc | 84 | sr_sw_limits_init(&devc->limits); |
7a360375 BV |
85 | sdi->priv = devc; |
86 | ||
5e23fcab | 87 | sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1"); |
91219afc UH |
88 | sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]), |
89 | libusb_get_device_address(devlist[i]), NULL); | |
ac046ef8 | 90 | sdi->inst_type = SR_INST_USB; |
7a360375 BV |
91 | |
92 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
93 | devices = g_slist_append(devices, sdi); | |
94 | } | |
95 | libusb_free_device_list(devlist, 1); | |
ac3898d2 BV |
96 | |
97 | return devices; | |
98 | } | |
99 | ||
6078d2c9 | 100 | static int dev_open(struct sr_dev_inst *sdi) |
ac3898d2 | 101 | { |
4f840ce9 | 102 | struct sr_dev_driver *di = sdi->driver; |
41812aca | 103 | struct drv_context *drvc = di->context; |
ac046ef8 | 104 | struct sr_usb_dev_inst *usb; |
4af1f68f | 105 | int ret; |
7a360375 | 106 | |
ac046ef8 BV |
107 | usb = sdi->conn; |
108 | ||
4af1f68f LPC |
109 | ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb); |
110 | if (ret != SR_OK) | |
111 | return ret; | |
7a360375 BV |
112 | |
113 | /* The device reports as HID class, so the kernel would have | |
114 | * claimed it. */ | |
ac046ef8 BV |
115 | if (libusb_kernel_driver_active(usb->devhdl, 0) == 1) { |
116 | if ((ret = libusb_detach_kernel_driver(usb->devhdl, 0)) < 0) { | |
d4928d71 PS |
117 | sr_err("Failed to detach kernel driver: %s.", |
118 | libusb_error_name(ret)); | |
7a360375 BV |
119 | return SR_ERR; |
120 | } | |
121 | } | |
122 | ||
ac046ef8 | 123 | if ((ret = libusb_claim_interface(usb->devhdl, |
7a360375 | 124 | VICTOR_INTERFACE))) { |
fa773062 | 125 | sr_err("Failed to claim interface: %s.", libusb_error_name(ret)); |
7a360375 BV |
126 | return SR_ERR; |
127 | } | |
128 | sdi->status = SR_ST_ACTIVE; | |
ac3898d2 BV |
129 | |
130 | return SR_OK; | |
131 | } | |
132 | ||
6078d2c9 | 133 | static int dev_close(struct sr_dev_inst *sdi) |
ac3898d2 | 134 | { |
ac046ef8 | 135 | struct sr_usb_dev_inst *usb; |
7a360375 | 136 | |
ac046ef8 BV |
137 | usb = sdi->conn; |
138 | ||
139 | if (!usb->devhdl) | |
7a360375 BV |
140 | /* Nothing to do. */ |
141 | return SR_OK; | |
142 | ||
ac046ef8 BV |
143 | libusb_release_interface(usb->devhdl, VICTOR_INTERFACE); |
144 | libusb_close(usb->devhdl); | |
145 | usb->devhdl = NULL; | |
7a360375 | 146 | sdi->status = SR_ST_INACTIVE; |
ac3898d2 BV |
147 | |
148 | return SR_OK; | |
149 | } | |
150 | ||
584560f1 | 151 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 152 | const struct sr_channel_group *cg) |
ac046ef8 | 153 | { |
cf9e86bc | 154 | struct dev_context *devc = sdi->priv; |
ac046ef8 BV |
155 | struct sr_usb_dev_inst *usb; |
156 | char str[128]; | |
157 | ||
53b4680f | 158 | (void)cg; |
8f996b89 | 159 | |
584560f1 | 160 | switch (key) { |
ac046ef8 BV |
161 | case SR_CONF_CONN: |
162 | if (!sdi || !sdi->conn) | |
163 | return SR_ERR_ARG; | |
164 | usb = sdi->conn; | |
165 | snprintf(str, 128, "%d.%d", usb->bus, usb->address); | |
166 | *data = g_variant_new_string(str); | |
167 | break; | |
cf9e86bc LPC |
168 | case SR_CONF_LIMIT_SAMPLES: |
169 | case SR_CONF_LIMIT_MSEC: | |
170 | return sr_sw_limits_config_get(&devc->limits, key, data); | |
ac046ef8 BV |
171 | default: |
172 | return SR_ERR_NA; | |
173 | } | |
174 | ||
175 | return SR_OK; | |
176 | } | |
177 | ||
584560f1 | 178 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 179 | const struct sr_channel_group *cg) |
ac3898d2 | 180 | { |
7a360375 | 181 | struct dev_context *devc; |
ac3898d2 | 182 | |
53b4680f | 183 | (void)cg; |
8f996b89 | 184 | |
e73ffd42 BV |
185 | if (sdi->status != SR_ST_ACTIVE) |
186 | return SR_ERR_DEV_CLOSED; | |
187 | ||
7a360375 | 188 | devc = sdi->priv; |
dcd438ee | 189 | |
cf9e86bc | 190 | return sr_sw_limits_config_set(&devc->limits, key, data); |
ac3898d2 BV |
191 | } |
192 | ||
584560f1 | 193 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 194 | const struct sr_channel_group *cg) |
a1c743fc | 195 | { |
a1c743fc | 196 | (void)sdi; |
53b4680f | 197 | (void)cg; |
a1c743fc BV |
198 | |
199 | switch (key) { | |
ac046ef8 | 200 | case SR_CONF_SCAN_OPTIONS: |
584560f1 | 201 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
a0e0bb41 | 202 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); |
ac046ef8 | 203 | break; |
9a6517d1 | 204 | case SR_CONF_DEVICE_OPTIONS: |
55333928 BV |
205 | if (!sdi) |
206 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
207 | drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t)); | |
208 | else | |
209 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
210 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
9a6517d1 | 211 | break; |
a1c743fc | 212 | default: |
bd6fbf62 | 213 | return SR_ERR_NA; |
a1c743fc BV |
214 | } |
215 | ||
216 | return SR_OK; | |
217 | } | |
218 | ||
55462b8b | 219 | static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer) |
7a360375 BV |
220 | { |
221 | struct dev_context *devc; | |
222 | struct sr_dev_inst *sdi; | |
223 | int ret; | |
224 | ||
225 | sdi = transfer->user_data; | |
226 | devc = sdi->priv; | |
227 | if (transfer->status == LIBUSB_TRANSFER_NO_DEVICE) { | |
228 | /* USB device was unplugged. */ | |
695dc859 | 229 | dev_acquisition_stop(sdi); |
7a360375 | 230 | } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED) { |
fa773062 | 231 | sr_dbg("Got %d-byte packet.", transfer->actual_length); |
ff945683 BV |
232 | if (transfer->actual_length == DMM_DATA_SIZE) { |
233 | victor_dmm_receive_data(sdi, transfer->buffer); | |
cf9e86bc LPC |
234 | if (sr_sw_limits_check(&devc->limits)) |
235 | dev_acquisition_stop(sdi); | |
7a360375 BV |
236 | } |
237 | } | |
238 | /* Anything else is either an error or a timeout, which is fine: | |
239 | * we were just going to send another transfer request anyway. */ | |
240 | ||
241 | if (sdi->status == SR_ST_ACTIVE) { | |
242 | /* Send the same request again. */ | |
243 | if ((ret = libusb_submit_transfer(transfer) != 0)) { | |
fa773062 UH |
244 | sr_err("Unable to resubmit transfer: %s.", |
245 | libusb_error_name(ret)); | |
7a360375 | 246 | g_free(transfer->buffer); |
9ec7ff94 | 247 | libusb_free_transfer(transfer); |
695dc859 | 248 | dev_acquisition_stop(sdi); |
7a360375 BV |
249 | } |
250 | } else { | |
251 | /* This was the last transfer we're going to receive, so | |
252 | * clean up now. */ | |
7a360375 | 253 | g_free(transfer->buffer); |
9ec7ff94 | 254 | libusb_free_transfer(transfer); |
7a360375 | 255 | } |
7a360375 BV |
256 | } |
257 | ||
258 | static int handle_events(int fd, int revents, void *cb_data) | |
259 | { | |
260 | struct dev_context *devc; | |
4f840ce9 | 261 | struct drv_context *drvc; |
7a360375 | 262 | struct sr_dev_inst *sdi; |
4f840ce9 | 263 | struct sr_dev_driver *di; |
7a360375 | 264 | struct timeval tv; |
7a360375 BV |
265 | |
266 | (void)fd; | |
267 | (void)revents; | |
268 | ||
269 | sdi = cb_data; | |
270 | devc = sdi->priv; | |
4f840ce9 | 271 | di = sdi->driver; |
41812aca | 272 | drvc = di->context; |
7a360375 | 273 | |
cf9e86bc LPC |
274 | if (sr_sw_limits_check(&devc->limits)) |
275 | dev_acquisition_stop(sdi); | |
7a360375 BV |
276 | |
277 | if (sdi->status == SR_ST_STOPPING) { | |
102f1239 | 278 | usb_source_remove(sdi->session, drvc->sr_ctx); |
6078d2c9 | 279 | dev_close(sdi); |
3be42bc2 | 280 | std_session_send_df_end(sdi, LOG_PREFIX); |
7a360375 BV |
281 | } |
282 | ||
283 | memset(&tv, 0, sizeof(struct timeval)); | |
d4abb463 PS |
284 | libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv, |
285 | NULL); | |
7a360375 BV |
286 | |
287 | return TRUE; | |
288 | } | |
289 | ||
695dc859 | 290 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) |
ac3898d2 | 291 | { |
4f840ce9 | 292 | struct sr_dev_driver *di = sdi->driver; |
41812aca | 293 | struct drv_context *drvc = di->context; |
ac046ef8 | 294 | struct sr_usb_dev_inst *usb; |
7a360375 | 295 | struct libusb_transfer *transfer; |
6c60facc | 296 | int ret; |
7a360375 BV |
297 | unsigned char *buf; |
298 | ||
e73ffd42 BV |
299 | if (sdi->status != SR_ST_ACTIVE) |
300 | return SR_ERR_DEV_CLOSED; | |
301 | ||
ac046ef8 | 302 | usb = sdi->conn; |
7a360375 | 303 | |
695dc859 | 304 | std_session_send_df_header(sdi, LOG_PREFIX); |
7a360375 | 305 | |
102f1239 BV |
306 | usb_source_add(sdi->session, drvc->sr_ctx, 100, |
307 | handle_events, (void *)sdi); | |
7a360375 | 308 | |
a95f142e | 309 | buf = g_malloc(DMM_DATA_SIZE); |
7a360375 BV |
310 | transfer = libusb_alloc_transfer(0); |
311 | /* Each transfer request gets 100ms to arrive before it's restarted. | |
312 | * The device only sends 1 transfer/second no matter how many | |
313 | * times you ask, but we want to keep step with the USB events | |
314 | * handling above. */ | |
ac046ef8 | 315 | libusb_fill_interrupt_transfer(transfer, usb->devhdl, |
fa773062 | 316 | VICTOR_ENDPOINT, buf, DMM_DATA_SIZE, receive_transfer, |
695dc859 | 317 | (struct sr_dev_inst *)sdi, 100); |
7a360375 | 318 | if ((ret = libusb_submit_transfer(transfer) != 0)) { |
fa773062 | 319 | sr_err("Unable to submit transfer: %s.", libusb_error_name(ret)); |
7a360375 BV |
320 | libusb_free_transfer(transfer); |
321 | g_free(buf); | |
322 | return SR_ERR; | |
323 | } | |
ac3898d2 BV |
324 | |
325 | return SR_OK; | |
326 | } | |
327 | ||
695dc859 | 328 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) |
ac3898d2 | 329 | { |
ac3898d2 | 330 | if (sdi->status != SR_ST_ACTIVE) { |
7a360375 | 331 | sr_err("Device not active, can't stop acquisition."); |
ac3898d2 BV |
332 | return SR_ERR; |
333 | } | |
334 | ||
7a360375 | 335 | sdi->status = SR_ST_STOPPING; |
ac3898d2 BV |
336 | |
337 | return SR_OK; | |
338 | } | |
339 | ||
340 | SR_PRIV struct sr_dev_driver victor_dmm_driver_info = { | |
341 | .name = "victor-dmm", | |
7a360375 | 342 | .longname = "Victor DMMs", |
ac3898d2 | 343 | .api_version = 1, |
c2fdcc25 | 344 | .init = std_init, |
700d6b64 | 345 | .cleanup = std_cleanup, |
6078d2c9 | 346 | .scan = scan, |
c01bf34c | 347 | .dev_list = std_dev_list, |
a6630742 | 348 | .dev_clear = NULL, |
ac046ef8 | 349 | .config_get = config_get, |
035a1078 | 350 | .config_set = config_set, |
a1c743fc | 351 | .config_list = config_list, |
6078d2c9 UH |
352 | .dev_open = dev_open, |
353 | .dev_close = dev_close, | |
354 | .dev_acquisition_start = dev_acquisition_start, | |
355 | .dev_acquisition_stop = dev_acquisition_stop, | |
41812aca | 356 | .context = NULL, |
ac3898d2 | 357 | }; |