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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 | |
7a360375 | 31 | #define VICTOR_INTERFACE 0 |
1a46cc62 | 32 | #define VICTOR_ENDPOINT (LIBUSB_ENDPOINT_IN | 1) |
d9251a2c | 33 | |
a0e0bb41 | 34 | static const uint32_t scanopts[] = { |
ac046ef8 BV |
35 | SR_CONF_CONN, |
36 | }; | |
37 | ||
55fb76b3 UH |
38 | static const uint32_t drvopts[] = { |
39 | SR_CONF_MULTIMETER, | |
40 | }; | |
41 | ||
f254bc4b | 42 | static const uint32_t devopts[] = { |
1953564a | 43 | SR_CONF_CONTINUOUS, |
5827f61b BV |
44 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET, |
45 | SR_CONF_LIMIT_MSEC | SR_CONF_SET, | |
55333928 | 46 | SR_CONF_CONN | SR_CONF_GET, |
7a360375 BV |
47 | }; |
48 | ||
4f840ce9 | 49 | static GSList *scan(struct sr_dev_driver *di, GSList *options) |
ac3898d2 BV |
50 | { |
51 | struct drv_context *drvc; | |
7a360375 BV |
52 | struct dev_context *devc; |
53 | struct sr_dev_inst *sdi; | |
7a360375 BV |
54 | struct libusb_device_descriptor des; |
55 | libusb_device **devlist; | |
ac3898d2 | 56 | GSList *devices; |
2a8f2d41 | 57 | int i; |
66c91e25 | 58 | char connection_id[64]; |
ac3898d2 BV |
59 | |
60 | (void)options; | |
61 | ||
41812aca | 62 | drvc = di->context; |
7a360375 | 63 | |
ac3898d2 | 64 | devices = NULL; |
d4abb463 | 65 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); |
7a360375 | 66 | for (i = 0; devlist[i]; i++) { |
2a8f2d41 | 67 | libusb_get_device_descriptor(devlist[i], &des); |
ac3898d2 | 68 | |
7a360375 BV |
69 | if (des.idVendor != VICTOR_VID || des.idProduct != VICTOR_PID) |
70 | continue; | |
71 | ||
66c91e25 SA |
72 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); |
73 | ||
aac29cc1 | 74 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
0af636be | 75 | sdi->status = SR_ST_INACTIVE; |
b15ff1c9 | 76 | sdi->vendor = g_strdup("Victor"); |
66c91e25 | 77 | sdi->connection_id = g_strdup(connection_id); |
f57d8ffe | 78 | devc = g_malloc0(sizeof(struct dev_context)); |
cf9e86bc | 79 | sr_sw_limits_init(&devc->limits); |
7a360375 BV |
80 | sdi->priv = devc; |
81 | ||
5e23fcab | 82 | sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1"); |
91219afc UH |
83 | sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]), |
84 | libusb_get_device_address(devlist[i]), NULL); | |
ac046ef8 | 85 | sdi->inst_type = SR_INST_USB; |
7a360375 | 86 | |
7a360375 BV |
87 | devices = g_slist_append(devices, sdi); |
88 | } | |
89 | libusb_free_device_list(devlist, 1); | |
ac3898d2 | 90 | |
15a5bfe4 | 91 | return std_scan_complete(di, devices); |
ac3898d2 BV |
92 | } |
93 | ||
6078d2c9 | 94 | static int dev_open(struct sr_dev_inst *sdi) |
ac3898d2 | 95 | { |
4f840ce9 | 96 | struct sr_dev_driver *di = sdi->driver; |
41812aca | 97 | struct drv_context *drvc = di->context; |
ac046ef8 | 98 | struct sr_usb_dev_inst *usb; |
4af1f68f | 99 | int ret; |
7a360375 | 100 | |
ac046ef8 BV |
101 | usb = sdi->conn; |
102 | ||
4af1f68f LPC |
103 | ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb); |
104 | if (ret != SR_OK) | |
105 | return ret; | |
7a360375 | 106 | |
ac046ef8 BV |
107 | if (libusb_kernel_driver_active(usb->devhdl, 0) == 1) { |
108 | if ((ret = libusb_detach_kernel_driver(usb->devhdl, 0)) < 0) { | |
d4928d71 PS |
109 | sr_err("Failed to detach kernel driver: %s.", |
110 | libusb_error_name(ret)); | |
7a360375 BV |
111 | return SR_ERR; |
112 | } | |
113 | } | |
114 | ||
ac046ef8 | 115 | if ((ret = libusb_claim_interface(usb->devhdl, |
7a360375 | 116 | VICTOR_INTERFACE))) { |
fa773062 | 117 | sr_err("Failed to claim interface: %s.", libusb_error_name(ret)); |
7a360375 BV |
118 | return SR_ERR; |
119 | } | |
ac3898d2 BV |
120 | |
121 | return SR_OK; | |
122 | } | |
123 | ||
6078d2c9 | 124 | static int dev_close(struct sr_dev_inst *sdi) |
ac3898d2 | 125 | { |
ac046ef8 | 126 | struct sr_usb_dev_inst *usb; |
7a360375 | 127 | |
ac046ef8 BV |
128 | usb = sdi->conn; |
129 | ||
130 | if (!usb->devhdl) | |
f1ba6b4b | 131 | return SR_ERR_BUG; |
7a360375 | 132 | |
ac046ef8 BV |
133 | libusb_release_interface(usb->devhdl, VICTOR_INTERFACE); |
134 | libusb_close(usb->devhdl); | |
135 | usb->devhdl = NULL; | |
ac3898d2 BV |
136 | |
137 | return SR_OK; | |
138 | } | |
139 | ||
584560f1 | 140 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 141 | const struct sr_channel_group *cg) |
ac046ef8 | 142 | { |
cf9e86bc | 143 | struct dev_context *devc = sdi->priv; |
ac046ef8 BV |
144 | struct sr_usb_dev_inst *usb; |
145 | char str[128]; | |
146 | ||
53b4680f | 147 | (void)cg; |
8f996b89 | 148 | |
584560f1 | 149 | switch (key) { |
ac046ef8 BV |
150 | case SR_CONF_CONN: |
151 | if (!sdi || !sdi->conn) | |
152 | return SR_ERR_ARG; | |
153 | usb = sdi->conn; | |
154 | snprintf(str, 128, "%d.%d", usb->bus, usb->address); | |
155 | *data = g_variant_new_string(str); | |
156 | break; | |
cf9e86bc LPC |
157 | case SR_CONF_LIMIT_SAMPLES: |
158 | case SR_CONF_LIMIT_MSEC: | |
159 | return sr_sw_limits_config_get(&devc->limits, key, data); | |
ac046ef8 BV |
160 | default: |
161 | return SR_ERR_NA; | |
162 | } | |
163 | ||
164 | return SR_OK; | |
165 | } | |
166 | ||
584560f1 | 167 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 168 | const struct sr_channel_group *cg) |
ac3898d2 | 169 | { |
7a360375 | 170 | struct dev_context *devc; |
ac3898d2 | 171 | |
53b4680f | 172 | (void)cg; |
8f996b89 | 173 | |
7a360375 | 174 | devc = sdi->priv; |
dcd438ee | 175 | |
cf9e86bc | 176 | return sr_sw_limits_config_set(&devc->limits, key, data); |
ac3898d2 BV |
177 | } |
178 | ||
584560f1 | 179 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 180 | const struct sr_channel_group *cg) |
a1c743fc | 181 | { |
e66d1892 | 182 | return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts); |
a1c743fc BV |
183 | } |
184 | ||
55462b8b | 185 | static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer) |
7a360375 BV |
186 | { |
187 | struct dev_context *devc; | |
188 | struct sr_dev_inst *sdi; | |
189 | int ret; | |
190 | ||
191 | sdi = transfer->user_data; | |
192 | devc = sdi->priv; | |
193 | if (transfer->status == LIBUSB_TRANSFER_NO_DEVICE) { | |
194 | /* USB device was unplugged. */ | |
d2f7c417 | 195 | sr_dev_acquisition_stop(sdi); |
7a360375 | 196 | } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED) { |
fa773062 | 197 | sr_dbg("Got %d-byte packet.", transfer->actual_length); |
ff945683 BV |
198 | if (transfer->actual_length == DMM_DATA_SIZE) { |
199 | victor_dmm_receive_data(sdi, transfer->buffer); | |
cf9e86bc | 200 | if (sr_sw_limits_check(&devc->limits)) |
d2f7c417 | 201 | sr_dev_acquisition_stop(sdi); |
7a360375 BV |
202 | } |
203 | } | |
204 | /* Anything else is either an error or a timeout, which is fine: | |
205 | * we were just going to send another transfer request anyway. */ | |
206 | ||
207 | if (sdi->status == SR_ST_ACTIVE) { | |
208 | /* Send the same request again. */ | |
209 | if ((ret = libusb_submit_transfer(transfer) != 0)) { | |
fa773062 UH |
210 | sr_err("Unable to resubmit transfer: %s.", |
211 | libusb_error_name(ret)); | |
7a360375 | 212 | g_free(transfer->buffer); |
9ec7ff94 | 213 | libusb_free_transfer(transfer); |
d2f7c417 | 214 | sr_dev_acquisition_stop(sdi); |
7a360375 BV |
215 | } |
216 | } else { | |
217 | /* This was the last transfer we're going to receive, so | |
218 | * clean up now. */ | |
7a360375 | 219 | g_free(transfer->buffer); |
9ec7ff94 | 220 | libusb_free_transfer(transfer); |
7a360375 | 221 | } |
7a360375 BV |
222 | } |
223 | ||
224 | static int handle_events(int fd, int revents, void *cb_data) | |
225 | { | |
226 | struct dev_context *devc; | |
4f840ce9 | 227 | struct drv_context *drvc; |
7a360375 | 228 | struct sr_dev_inst *sdi; |
4f840ce9 | 229 | struct sr_dev_driver *di; |
7a360375 | 230 | struct timeval tv; |
7a360375 BV |
231 | |
232 | (void)fd; | |
233 | (void)revents; | |
234 | ||
235 | sdi = cb_data; | |
236 | devc = sdi->priv; | |
4f840ce9 | 237 | di = sdi->driver; |
41812aca | 238 | drvc = di->context; |
7a360375 | 239 | |
cf9e86bc | 240 | if (sr_sw_limits_check(&devc->limits)) |
d2f7c417 | 241 | sr_dev_acquisition_stop(sdi); |
7a360375 BV |
242 | |
243 | if (sdi->status == SR_ST_STOPPING) { | |
102f1239 | 244 | usb_source_remove(sdi->session, drvc->sr_ctx); |
6078d2c9 | 245 | dev_close(sdi); |
bee2b016 | 246 | std_session_send_df_end(sdi); |
7a360375 BV |
247 | } |
248 | ||
249 | memset(&tv, 0, sizeof(struct timeval)); | |
d4abb463 PS |
250 | libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv, |
251 | NULL); | |
7a360375 BV |
252 | |
253 | return TRUE; | |
254 | } | |
255 | ||
695dc859 | 256 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) |
ac3898d2 | 257 | { |
4f840ce9 | 258 | struct sr_dev_driver *di = sdi->driver; |
41812aca | 259 | struct drv_context *drvc = di->context; |
ac046ef8 | 260 | struct sr_usb_dev_inst *usb; |
7a360375 | 261 | struct libusb_transfer *transfer; |
6c60facc | 262 | int ret; |
7a360375 BV |
263 | unsigned char *buf; |
264 | ||
ac046ef8 | 265 | usb = sdi->conn; |
7a360375 | 266 | |
bee2b016 | 267 | std_session_send_df_header(sdi); |
7a360375 | 268 | |
102f1239 BV |
269 | usb_source_add(sdi->session, drvc->sr_ctx, 100, |
270 | handle_events, (void *)sdi); | |
7a360375 | 271 | |
a95f142e | 272 | buf = g_malloc(DMM_DATA_SIZE); |
7a360375 BV |
273 | transfer = libusb_alloc_transfer(0); |
274 | /* Each transfer request gets 100ms to arrive before it's restarted. | |
275 | * The device only sends 1 transfer/second no matter how many | |
276 | * times you ask, but we want to keep step with the USB events | |
277 | * handling above. */ | |
ac046ef8 | 278 | libusb_fill_interrupt_transfer(transfer, usb->devhdl, |
fa773062 | 279 | VICTOR_ENDPOINT, buf, DMM_DATA_SIZE, receive_transfer, |
695dc859 | 280 | (struct sr_dev_inst *)sdi, 100); |
7a360375 | 281 | if ((ret = libusb_submit_transfer(transfer) != 0)) { |
fa773062 | 282 | sr_err("Unable to submit transfer: %s.", libusb_error_name(ret)); |
7a360375 BV |
283 | libusb_free_transfer(transfer); |
284 | g_free(buf); | |
285 | return SR_ERR; | |
286 | } | |
ac3898d2 BV |
287 | |
288 | return SR_OK; | |
289 | } | |
290 | ||
695dc859 | 291 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) |
ac3898d2 | 292 | { |
7a360375 | 293 | sdi->status = SR_ST_STOPPING; |
ac3898d2 BV |
294 | |
295 | return SR_OK; | |
296 | } | |
297 | ||
dd5c48a6 | 298 | static struct sr_dev_driver victor_dmm_driver_info = { |
ac3898d2 | 299 | .name = "victor-dmm", |
7a360375 | 300 | .longname = "Victor DMMs", |
ac3898d2 | 301 | .api_version = 1, |
c2fdcc25 | 302 | .init = std_init, |
700d6b64 | 303 | .cleanup = std_cleanup, |
6078d2c9 | 304 | .scan = scan, |
c01bf34c | 305 | .dev_list = std_dev_list, |
f778bf02 | 306 | .dev_clear = std_dev_clear, |
ac046ef8 | 307 | .config_get = config_get, |
035a1078 | 308 | .config_set = config_set, |
a1c743fc | 309 | .config_list = config_list, |
6078d2c9 UH |
310 | .dev_open = dev_open, |
311 | .dev_close = dev_close, | |
312 | .dev_acquisition_start = dev_acquisition_start, | |
313 | .dev_acquisition_stop = dev_acquisition_stop, | |
41812aca | 314 | .context = NULL, |
ac3898d2 | 315 | }; |
dd5c48a6 | 316 | SR_REGISTER_DEV_DRIVER(victor_dmm_driver_info); |