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0acdd793 BV |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2014 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> |
6dcb9723 | 21 | #include <string.h> |
0acdd793 BV |
22 | #include "protocol.h" |
23 | ||
6dcb9723 | 24 | #define SERIALCOMM "115200/8n1" |
695dc859 | 25 | static int dev_acquisition_stop(struct sr_dev_inst *sdi); |
6dcb9723 | 26 | |
584560f1 | 27 | static const uint32_t scanopts[] = { |
6dcb9723 BV |
28 | SR_CONF_CONN, |
29 | }; | |
30 | ||
584560f1 | 31 | static const uint32_t devopts[] = { |
6dcb9723 | 32 | SR_CONF_MULTIMETER, |
6dcb9723 | 33 | SR_CONF_CONTINUOUS, |
91b77e6b LPC |
34 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET | SR_CONF_GET, |
35 | SR_CONF_LIMIT_MSEC | SR_CONF_SET | SR_CONF_GET, | |
6dcb9723 BV |
36 | }; |
37 | ||
329733d9 UH |
38 | static const uint8_t TESTO_x35_REQUEST[] = { 0x12, 0, 0, 0, 1, 1, 0x55, 0xd1, 0xb7 }; |
39 | ||
40 | static const struct testo_model models[] = { | |
6dcb9723 BV |
41 | { "435", 9, TESTO_x35_REQUEST }, |
42 | }; | |
0acdd793 | 43 | |
4f840ce9 | 44 | static GSList *scan(struct sr_dev_driver *di, GSList *options) |
0acdd793 BV |
45 | { |
46 | struct drv_context *drvc; | |
6dcb9723 BV |
47 | struct dev_context *devc; |
48 | struct sr_config *src; | |
49 | struct sr_dev_inst *sdi; | |
50 | struct sr_usb_dev_inst *usb; | |
51 | struct libusb_device_descriptor des; | |
52 | libusb_device **devlist; | |
53 | struct libusb_device_handle *hdl; | |
54 | GSList *conn_devices, *devices, *l; | |
bde9fbd1 | 55 | int ret, i; |
6dcb9723 | 56 | const char *str; |
bde9fbd1 | 57 | char manufacturer[64], product[64], connection_id[64]; |
0acdd793 BV |
58 | |
59 | devices = NULL; | |
41812aca | 60 | drvc = di->context; |
0acdd793 BV |
61 | drvc->instances = NULL; |
62 | ||
6dcb9723 BV |
63 | conn_devices = NULL; |
64 | for (l = options; l; l = l->next) { | |
65 | src = l->data; | |
66 | if (src->key != SR_CONF_CONN) | |
67 | continue; | |
68 | str = g_variant_get_string(src->data, NULL); | |
69 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, str); | |
70 | } | |
71 | ||
72 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
73 | for (i = 0; devlist[i]; i++) { | |
74 | if (conn_devices) { | |
75 | usb = NULL; | |
76 | for (l = conn_devices; l; l = l->next) { | |
77 | usb = l->data; | |
78 | if (usb->bus == libusb_get_bus_number(devlist[i]) | |
79 | && usb->address == libusb_get_device_address(devlist[i])) | |
80 | break; | |
81 | } | |
82 | if (!l) | |
83 | /* This device matched none of the ones that | |
84 | * matched the conn specification. */ | |
85 | continue; | |
86 | } | |
87 | ||
2a8f2d41 | 88 | libusb_get_device_descriptor(devlist[i], &des); |
6dcb9723 BV |
89 | |
90 | if ((ret = libusb_open(devlist[i], &hdl)) < 0) | |
91 | continue; | |
92 | ||
93 | manufacturer[0] = product[0] = '\0'; | |
94 | if (des.iManufacturer && (ret = libusb_get_string_descriptor_ascii( | |
95 | hdl, des.iManufacturer, (unsigned char *) manufacturer, | |
96 | sizeof(manufacturer))) < 0) { | |
97 | sr_warn("Failed to get manufacturer string descriptor: %s.", | |
98 | libusb_error_name(ret)); | |
99 | } | |
100 | if (des.iProduct && (ret = libusb_get_string_descriptor_ascii( | |
101 | hdl, des.iProduct, (unsigned char *) product, | |
102 | sizeof(product))) < 0) { | |
103 | sr_warn("Failed to get product string descriptor: %s.", | |
104 | libusb_error_name(ret)); | |
105 | } | |
106 | libusb_close(hdl); | |
107 | ||
108 | if (strncmp(manufacturer, "testo", 5)) | |
109 | continue; | |
110 | ||
bde9fbd1 SA |
111 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); |
112 | ||
6dcb9723 BV |
113 | /* Hardcode the 435 for now.*/ |
114 | if (strcmp(product, "testo 435/635/735")) | |
115 | continue; | |
116 | ||
aac29cc1 | 117 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
0af636be UH |
118 | sdi->status = SR_ST_INACTIVE; |
119 | sdi->vendor = g_strdup("Testo"); | |
120 | sdi->model = g_strdup("435/635/735"); | |
6dcb9723 BV |
121 | sdi->driver = di; |
122 | sdi->inst_type = SR_INST_USB; | |
123 | sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]), | |
124 | libusb_get_device_address(devlist[i]), NULL); | |
bde9fbd1 | 125 | sdi->connection_id = g_strdup(connection_id); |
6dcb9723 BV |
126 | devc = g_malloc(sizeof(struct dev_context)); |
127 | devc->model = &models[0]; | |
91b77e6b | 128 | sr_sw_limits_init(&devc->sw_limits); |
6dcb9723 BV |
129 | sdi->priv = devc; |
130 | if (testo_probe_channels(sdi) != SR_OK) | |
131 | continue; | |
132 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
133 | devices = g_slist_append(devices, sdi); | |
134 | } | |
135 | libusb_free_device_list(devlist, 1); | |
136 | g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free); | |
0acdd793 BV |
137 | |
138 | return devices; | |
139 | } | |
140 | ||
0acdd793 BV |
141 | static int dev_open(struct sr_dev_inst *sdi) |
142 | { | |
4f840ce9 | 143 | struct sr_dev_driver *di = sdi->driver; |
41812aca | 144 | struct drv_context *drvc = di->context; |
6dcb9723 | 145 | struct sr_usb_dev_inst *usb; |
b75dc14a | 146 | int ret; |
6dcb9723 | 147 | |
6dcb9723 | 148 | usb = sdi->conn; |
b75dc14a LPC |
149 | |
150 | ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb); | |
151 | if (ret != SR_OK) | |
152 | return ret; | |
0acdd793 | 153 | |
88b1d4e5 BV |
154 | if (libusb_has_capability(LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER)) { |
155 | if (libusb_kernel_driver_active(usb->devhdl, 0) == 1) { | |
156 | if ((ret = libusb_detach_kernel_driver(usb->devhdl, 0)) < 0) { | |
157 | sr_err("Failed to detach kernel driver: %s.", | |
158 | libusb_error_name(ret)); | |
159 | return SR_ERR; | |
160 | } | |
161 | } | |
162 | } | |
163 | ||
6dcb9723 BV |
164 | if ((ret = libusb_claim_interface(usb->devhdl, 0))) { |
165 | sr_err("Failed to claim interface: %s.", libusb_error_name(ret)); | |
166 | return SR_ERR; | |
167 | } | |
0acdd793 BV |
168 | sdi->status = SR_ST_ACTIVE; |
169 | ||
170 | return SR_OK; | |
171 | } | |
172 | ||
173 | static int dev_close(struct sr_dev_inst *sdi) | |
174 | { | |
6dcb9723 BV |
175 | struct sr_usb_dev_inst *usb; |
176 | ||
6dcb9723 BV |
177 | usb = sdi->conn; |
178 | if (!usb->devhdl) | |
179 | /* Nothing to do. */ | |
180 | return SR_OK; | |
0acdd793 | 181 | |
6dcb9723 BV |
182 | libusb_release_interface(usb->devhdl, 0); |
183 | libusb_close(usb->devhdl); | |
184 | usb->devhdl = NULL; | |
0acdd793 BV |
185 | sdi->status = SR_ST_INACTIVE; |
186 | ||
187 | return SR_OK; | |
188 | } | |
189 | ||
584560f1 | 190 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
0acdd793 BV |
191 | const struct sr_channel_group *cg) |
192 | { | |
91b77e6b | 193 | struct dev_context *devc = sdi->priv; |
6dcb9723 BV |
194 | struct sr_usb_dev_inst *usb; |
195 | char str[128]; | |
0acdd793 | 196 | |
0acdd793 BV |
197 | (void)cg; |
198 | ||
0acdd793 | 199 | switch (key) { |
6dcb9723 BV |
200 | case SR_CONF_CONN: |
201 | if (!sdi || !sdi->conn) | |
202 | return SR_ERR_ARG; | |
203 | usb = sdi->conn; | |
204 | snprintf(str, 128, "%d.%d", usb->bus, usb->address); | |
205 | *data = g_variant_new_string(str); | |
206 | break; | |
91b77e6b LPC |
207 | case SR_CONF_LIMIT_MSEC: |
208 | case SR_CONF_LIMIT_SAMPLES: | |
209 | return sr_sw_limits_config_get(&devc->sw_limits, key, data); | |
0acdd793 BV |
210 | default: |
211 | return SR_ERR_NA; | |
212 | } | |
213 | ||
6dcb9723 | 214 | return SR_OK; |
0acdd793 BV |
215 | } |
216 | ||
584560f1 | 217 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
0acdd793 BV |
218 | const struct sr_channel_group *cg) |
219 | { | |
91b77e6b | 220 | struct dev_context *devc = sdi->priv; |
0acdd793 | 221 | |
0acdd793 BV |
222 | (void)cg; |
223 | ||
224 | if (sdi->status != SR_ST_ACTIVE) | |
225 | return SR_ERR_DEV_CLOSED; | |
226 | ||
91b77e6b | 227 | return sr_sw_limits_config_set(&devc->sw_limits, key, data); |
0acdd793 BV |
228 | } |
229 | ||
584560f1 | 230 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
0acdd793 BV |
231 | const struct sr_channel_group *cg) |
232 | { | |
0acdd793 | 233 | (void)sdi; |
0acdd793 BV |
234 | (void)cg; |
235 | ||
0acdd793 | 236 | switch (key) { |
6dcb9723 | 237 | case SR_CONF_SCAN_OPTIONS: |
584560f1 BV |
238 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
239 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
6dcb9723 BV |
240 | break; |
241 | case SR_CONF_DEVICE_OPTIONS: | |
584560f1 BV |
242 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
243 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
6dcb9723 | 244 | break; |
0acdd793 BV |
245 | default: |
246 | return SR_ERR_NA; | |
247 | } | |
248 | ||
6dcb9723 | 249 | return SR_OK; |
0acdd793 BV |
250 | } |
251 | ||
6dcb9723 | 252 | static void receive_data(struct sr_dev_inst *sdi, unsigned char *data, int len) |
0acdd793 | 253 | { |
6dcb9723 BV |
254 | struct dev_context *devc; |
255 | int packet_size; | |
87895640 | 256 | uint16_t crc; |
6dcb9723 BV |
257 | |
258 | devc = sdi->priv; | |
259 | ||
260 | if (devc->reply_size + len > MAX_REPLY_SIZE) { | |
261 | /* Something went very wrong. */ | |
262 | sr_dbg("Receive buffer overrun."); | |
263 | devc->reply_size = 0; | |
264 | return; | |
265 | } | |
266 | ||
267 | memcpy(devc->reply + devc->reply_size, data, len); | |
268 | devc->reply_size += len; | |
269 | /* Sixth byte contains the length of the packet. */ | |
87895640 BV |
270 | if (devc->reply_size < 7) |
271 | return; | |
272 | ||
273 | packet_size = 7 + devc->reply[6] * 7 + 2; | |
274 | if (devc->reply_size < packet_size) | |
275 | return; | |
276 | ||
277 | if (!testo_check_packet_prefix(devc->reply, devc->reply_size)) | |
278 | return; | |
279 | ||
280 | crc = crc16_mcrf4xx(0xffff, devc->reply, devc->reply_size - 2); | |
88b1d4e5 | 281 | if (crc == RL16(&devc->reply[devc->reply_size - 2])) { |
87895640 | 282 | testo_receive_packet(sdi); |
91b77e6b | 283 | sr_sw_limits_update_samples_read(&devc->sw_limits, 1); |
87895640 BV |
284 | } else { |
285 | sr_dbg("Packet has invalid CRC."); | |
6dcb9723 BV |
286 | } |
287 | ||
87895640 | 288 | devc->reply_size = 0; |
91b77e6b | 289 | if (sr_sw_limits_check(&devc->sw_limits)) |
695dc859 | 290 | dev_acquisition_stop(sdi); |
87895640 BV |
291 | else |
292 | testo_request_packet(sdi); | |
293 | ||
6dcb9723 BV |
294 | } |
295 | ||
55462b8b | 296 | SR_PRIV void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer) |
6dcb9723 BV |
297 | { |
298 | struct dev_context *devc; | |
299 | struct sr_dev_inst *sdi; | |
300 | int ret; | |
301 | ||
302 | sdi = transfer->user_data; | |
303 | devc = sdi->priv; | |
304 | if (transfer == devc->out_transfer) | |
305 | /* Just the command acknowledgement. */ | |
306 | return; | |
307 | ||
308 | if (transfer->status == LIBUSB_TRANSFER_NO_DEVICE) { | |
309 | /* USB device was unplugged. */ | |
695dc859 | 310 | dev_acquisition_stop(sdi); |
6dcb9723 BV |
311 | } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED) { |
312 | /* First two bytes in any transfer are FTDI status bytes. */ | |
313 | if (transfer->actual_length > 2) | |
314 | receive_data(sdi, transfer->buffer + 2, transfer->actual_length - 2); | |
315 | } | |
316 | /* Anything else is either an error or a timeout, which is fine: | |
317 | * we were just going to send another transfer request anyway. */ | |
318 | ||
319 | if (sdi->status == SR_ST_ACTIVE) { | |
320 | if ((ret = libusb_submit_transfer(transfer) != 0)) { | |
321 | sr_err("Unable to resubmit transfer: %s.", | |
322 | libusb_error_name(ret)); | |
323 | g_free(transfer->buffer); | |
324 | libusb_free_transfer(transfer); | |
695dc859 | 325 | dev_acquisition_stop(sdi); |
6dcb9723 BV |
326 | } |
327 | } else { | |
328 | /* This was the last transfer we're going to receive, so | |
329 | * clean up now. */ | |
330 | g_free(transfer->buffer); | |
331 | libusb_free_transfer(transfer); | |
332 | } | |
333 | } | |
334 | ||
335 | static int handle_events(int fd, int revents, void *cb_data) | |
336 | { | |
4f840ce9 | 337 | struct sr_dev_driver *di; |
6dcb9723 | 338 | struct dev_context *devc; |
4f840ce9 | 339 | struct drv_context *drvc; |
6dcb9723 BV |
340 | struct sr_dev_inst *sdi; |
341 | struct timeval tv; | |
6dcb9723 BV |
342 | |
343 | (void)fd; | |
344 | (void)revents; | |
345 | ||
346 | sdi = cb_data; | |
347 | devc = sdi->priv; | |
4f840ce9 | 348 | di = sdi->driver; |
41812aca | 349 | drvc = di->context; |
6dcb9723 | 350 | |
91b77e6b LPC |
351 | if (sr_sw_limits_check(&devc->sw_limits)) |
352 | dev_acquisition_stop(sdi); | |
6dcb9723 BV |
353 | |
354 | if (sdi->status == SR_ST_STOPPING) { | |
102f1239 | 355 | usb_source_remove(sdi->session, drvc->sr_ctx); |
6dcb9723 | 356 | dev_close(sdi); |
3be42bc2 | 357 | std_session_send_df_end(sdi, LOG_PREFIX); |
6dcb9723 BV |
358 | } |
359 | ||
360 | memset(&tv, 0, sizeof(struct timeval)); | |
361 | libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv, | |
362 | NULL); | |
363 | ||
364 | return TRUE; | |
365 | } | |
366 | ||
695dc859 | 367 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) |
6dcb9723 | 368 | { |
4f840ce9 | 369 | struct sr_dev_driver *di = sdi->driver; |
6dcb9723 BV |
370 | struct drv_context *drvc; |
371 | struct dev_context *devc; | |
372 | struct sr_usb_dev_inst *usb; | |
373 | struct libusb_transfer *transfer; | |
374 | int ret; | |
375 | unsigned char *buf; | |
0acdd793 | 376 | |
41812aca | 377 | drvc = di->context; |
0acdd793 BV |
378 | if (sdi->status != SR_ST_ACTIVE) |
379 | return SR_ERR_DEV_CLOSED; | |
380 | ||
6dcb9723 BV |
381 | |
382 | devc = sdi->priv; | |
383 | usb = sdi->conn; | |
6dcb9723 BV |
384 | devc->reply_size = 0; |
385 | ||
695dc859 | 386 | std_session_send_df_header(sdi, LOG_PREFIX); |
6dcb9723 | 387 | |
102f1239 BV |
388 | usb_source_add(sdi->session, drvc->sr_ctx, 100, |
389 | handle_events, (void *)sdi); | |
6dcb9723 BV |
390 | |
391 | if (testo_set_serial_params(usb) != SR_OK) | |
392 | return SR_ERR; | |
393 | ||
394 | devc->out_transfer = libusb_alloc_transfer(0); | |
395 | if (testo_request_packet(sdi) != SR_OK) | |
396 | return SR_ERR; | |
397 | ||
a95f142e | 398 | buf = g_malloc(MAX_REPLY_SIZE); |
6dcb9723 BV |
399 | transfer = libusb_alloc_transfer(0); |
400 | libusb_fill_bulk_transfer(transfer, usb->devhdl, EP_IN, buf, | |
401 | MAX_REPLY_SIZE, receive_transfer, (void *)sdi, 100); | |
402 | if ((ret = libusb_submit_transfer(transfer) != 0)) { | |
403 | sr_err("Unable to submit transfer: %s.", libusb_error_name(ret)); | |
404 | libusb_free_transfer(transfer); | |
405 | g_free(buf); | |
406 | return SR_ERR; | |
407 | } | |
408 | devc->reply_size = 0; | |
0acdd793 | 409 | |
91b77e6b LPC |
410 | sr_sw_limits_acquisition_start(&devc->sw_limits); |
411 | ||
0acdd793 BV |
412 | return SR_OK; |
413 | } | |
414 | ||
695dc859 | 415 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) |
0acdd793 | 416 | { |
0acdd793 BV |
417 | if (sdi->status != SR_ST_ACTIVE) |
418 | return SR_ERR_DEV_CLOSED; | |
419 | ||
6dcb9723 | 420 | sdi->status = SR_ST_STOPPING; |
0acdd793 BV |
421 | |
422 | return SR_OK; | |
423 | } | |
424 | ||
dd5c48a6 | 425 | static struct sr_dev_driver testo_driver_info = { |
0acdd793 BV |
426 | .name = "testo", |
427 | .longname = "Testo", | |
428 | .api_version = 1, | |
c2fdcc25 | 429 | .init = std_init, |
700d6b64 | 430 | .cleanup = std_cleanup, |
0acdd793 | 431 | .scan = scan, |
c01bf34c | 432 | .dev_list = std_dev_list, |
0acdd793 BV |
433 | .config_get = config_get, |
434 | .config_set = config_set, | |
435 | .config_list = config_list, | |
436 | .dev_open = dev_open, | |
437 | .dev_close = dev_close, | |
438 | .dev_acquisition_start = dev_acquisition_start, | |
439 | .dev_acquisition_stop = dev_acquisition_stop, | |
41812aca | 440 | .context = NULL, |
0acdd793 | 441 | }; |
dd5c48a6 | 442 | SR_REGISTER_DEV_DRIVER(testo_driver_info); |