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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 BV |
24 | #define SERIALCOMM "115200/8n1" |
25 | ||
0acdd793 | 26 | SR_PRIV struct sr_dev_driver testo_driver_info; |
695dc859 | 27 | static int dev_acquisition_stop(struct sr_dev_inst *sdi); |
6dcb9723 | 28 | |
584560f1 | 29 | static const uint32_t scanopts[] = { |
6dcb9723 BV |
30 | SR_CONF_CONN, |
31 | }; | |
32 | ||
584560f1 | 33 | static const uint32_t devopts[] = { |
6dcb9723 | 34 | SR_CONF_MULTIMETER, |
6dcb9723 | 35 | SR_CONF_CONTINUOUS, |
91b77e6b LPC |
36 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET | SR_CONF_GET, |
37 | SR_CONF_LIMIT_MSEC | SR_CONF_SET | SR_CONF_GET, | |
6dcb9723 BV |
38 | }; |
39 | ||
329733d9 UH |
40 | static const uint8_t TESTO_x35_REQUEST[] = { 0x12, 0, 0, 0, 1, 1, 0x55, 0xd1, 0xb7 }; |
41 | ||
42 | static const struct testo_model models[] = { | |
6dcb9723 BV |
43 | { "435", 9, TESTO_x35_REQUEST }, |
44 | }; | |
0acdd793 | 45 | |
4f840ce9 | 46 | static GSList *scan(struct sr_dev_driver *di, GSList *options) |
0acdd793 BV |
47 | { |
48 | struct drv_context *drvc; | |
6dcb9723 BV |
49 | struct dev_context *devc; |
50 | struct sr_config *src; | |
51 | struct sr_dev_inst *sdi; | |
52 | struct sr_usb_dev_inst *usb; | |
53 | struct libusb_device_descriptor des; | |
54 | libusb_device **devlist; | |
55 | struct libusb_device_handle *hdl; | |
56 | GSList *conn_devices, *devices, *l; | |
bde9fbd1 | 57 | int ret, i; |
6dcb9723 | 58 | const char *str; |
bde9fbd1 | 59 | char manufacturer[64], product[64], connection_id[64]; |
0acdd793 BV |
60 | |
61 | devices = NULL; | |
41812aca | 62 | drvc = di->context; |
0acdd793 BV |
63 | drvc->instances = NULL; |
64 | ||
6dcb9723 BV |
65 | conn_devices = NULL; |
66 | for (l = options; l; l = l->next) { | |
67 | src = l->data; | |
68 | if (src->key != SR_CONF_CONN) | |
69 | continue; | |
70 | str = g_variant_get_string(src->data, NULL); | |
71 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, str); | |
72 | } | |
73 | ||
74 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
75 | for (i = 0; devlist[i]; i++) { | |
76 | if (conn_devices) { | |
77 | usb = NULL; | |
78 | for (l = conn_devices; l; l = l->next) { | |
79 | usb = l->data; | |
80 | if (usb->bus == libusb_get_bus_number(devlist[i]) | |
81 | && usb->address == libusb_get_device_address(devlist[i])) | |
82 | break; | |
83 | } | |
84 | if (!l) | |
85 | /* This device matched none of the ones that | |
86 | * matched the conn specification. */ | |
87 | continue; | |
88 | } | |
89 | ||
2a8f2d41 | 90 | libusb_get_device_descriptor(devlist[i], &des); |
6dcb9723 BV |
91 | |
92 | if ((ret = libusb_open(devlist[i], &hdl)) < 0) | |
93 | continue; | |
94 | ||
95 | manufacturer[0] = product[0] = '\0'; | |
96 | if (des.iManufacturer && (ret = libusb_get_string_descriptor_ascii( | |
97 | hdl, des.iManufacturer, (unsigned char *) manufacturer, | |
98 | sizeof(manufacturer))) < 0) { | |
99 | sr_warn("Failed to get manufacturer string descriptor: %s.", | |
100 | libusb_error_name(ret)); | |
101 | } | |
102 | if (des.iProduct && (ret = libusb_get_string_descriptor_ascii( | |
103 | hdl, des.iProduct, (unsigned char *) product, | |
104 | sizeof(product))) < 0) { | |
105 | sr_warn("Failed to get product string descriptor: %s.", | |
106 | libusb_error_name(ret)); | |
107 | } | |
108 | libusb_close(hdl); | |
109 | ||
110 | if (strncmp(manufacturer, "testo", 5)) | |
111 | continue; | |
112 | ||
bde9fbd1 SA |
113 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); |
114 | ||
6dcb9723 BV |
115 | /* Hardcode the 435 for now.*/ |
116 | if (strcmp(product, "testo 435/635/735")) | |
117 | continue; | |
118 | ||
aac29cc1 | 119 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
0af636be UH |
120 | sdi->status = SR_ST_INACTIVE; |
121 | sdi->vendor = g_strdup("Testo"); | |
122 | sdi->model = g_strdup("435/635/735"); | |
6dcb9723 BV |
123 | sdi->driver = di; |
124 | sdi->inst_type = SR_INST_USB; | |
125 | sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]), | |
126 | libusb_get_device_address(devlist[i]), NULL); | |
bde9fbd1 | 127 | sdi->connection_id = g_strdup(connection_id); |
6dcb9723 BV |
128 | devc = g_malloc(sizeof(struct dev_context)); |
129 | devc->model = &models[0]; | |
91b77e6b | 130 | sr_sw_limits_init(&devc->sw_limits); |
6dcb9723 BV |
131 | sdi->priv = devc; |
132 | if (testo_probe_channels(sdi) != SR_OK) | |
133 | continue; | |
134 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
135 | devices = g_slist_append(devices, sdi); | |
136 | } | |
137 | libusb_free_device_list(devlist, 1); | |
138 | g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free); | |
0acdd793 BV |
139 | |
140 | return devices; | |
141 | } | |
142 | ||
0acdd793 BV |
143 | static int dev_open(struct sr_dev_inst *sdi) |
144 | { | |
4f840ce9 | 145 | struct sr_dev_driver *di = sdi->driver; |
41812aca | 146 | struct drv_context *drvc = di->context; |
6dcb9723 | 147 | struct sr_usb_dev_inst *usb; |
b75dc14a | 148 | int ret; |
6dcb9723 | 149 | |
6dcb9723 | 150 | usb = sdi->conn; |
b75dc14a LPC |
151 | |
152 | ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb); | |
153 | if (ret != SR_OK) | |
154 | return ret; | |
0acdd793 | 155 | |
88b1d4e5 BV |
156 | if (libusb_has_capability(LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER)) { |
157 | if (libusb_kernel_driver_active(usb->devhdl, 0) == 1) { | |
158 | if ((ret = libusb_detach_kernel_driver(usb->devhdl, 0)) < 0) { | |
159 | sr_err("Failed to detach kernel driver: %s.", | |
160 | libusb_error_name(ret)); | |
161 | return SR_ERR; | |
162 | } | |
163 | } | |
164 | } | |
165 | ||
6dcb9723 BV |
166 | if ((ret = libusb_claim_interface(usb->devhdl, 0))) { |
167 | sr_err("Failed to claim interface: %s.", libusb_error_name(ret)); | |
168 | return SR_ERR; | |
169 | } | |
0acdd793 BV |
170 | sdi->status = SR_ST_ACTIVE; |
171 | ||
172 | return SR_OK; | |
173 | } | |
174 | ||
175 | static int dev_close(struct sr_dev_inst *sdi) | |
176 | { | |
6dcb9723 BV |
177 | struct sr_usb_dev_inst *usb; |
178 | ||
6dcb9723 BV |
179 | usb = sdi->conn; |
180 | if (!usb->devhdl) | |
181 | /* Nothing to do. */ | |
182 | return SR_OK; | |
0acdd793 | 183 | |
6dcb9723 BV |
184 | libusb_release_interface(usb->devhdl, 0); |
185 | libusb_close(usb->devhdl); | |
186 | usb->devhdl = NULL; | |
0acdd793 BV |
187 | sdi->status = SR_ST_INACTIVE; |
188 | ||
189 | return SR_OK; | |
190 | } | |
191 | ||
584560f1 | 192 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
0acdd793 BV |
193 | const struct sr_channel_group *cg) |
194 | { | |
91b77e6b | 195 | struct dev_context *devc = sdi->priv; |
6dcb9723 BV |
196 | struct sr_usb_dev_inst *usb; |
197 | char str[128]; | |
0acdd793 | 198 | |
0acdd793 BV |
199 | (void)cg; |
200 | ||
0acdd793 | 201 | switch (key) { |
6dcb9723 BV |
202 | case SR_CONF_CONN: |
203 | if (!sdi || !sdi->conn) | |
204 | return SR_ERR_ARG; | |
205 | usb = sdi->conn; | |
206 | snprintf(str, 128, "%d.%d", usb->bus, usb->address); | |
207 | *data = g_variant_new_string(str); | |
208 | break; | |
91b77e6b LPC |
209 | case SR_CONF_LIMIT_MSEC: |
210 | case SR_CONF_LIMIT_SAMPLES: | |
211 | return sr_sw_limits_config_get(&devc->sw_limits, key, data); | |
0acdd793 BV |
212 | default: |
213 | return SR_ERR_NA; | |
214 | } | |
215 | ||
6dcb9723 | 216 | return SR_OK; |
0acdd793 BV |
217 | } |
218 | ||
584560f1 | 219 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
0acdd793 BV |
220 | const struct sr_channel_group *cg) |
221 | { | |
91b77e6b | 222 | struct dev_context *devc = sdi->priv; |
0acdd793 | 223 | |
0acdd793 BV |
224 | (void)cg; |
225 | ||
226 | if (sdi->status != SR_ST_ACTIVE) | |
227 | return SR_ERR_DEV_CLOSED; | |
228 | ||
91b77e6b | 229 | return sr_sw_limits_config_set(&devc->sw_limits, key, data); |
0acdd793 BV |
230 | } |
231 | ||
584560f1 | 232 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
0acdd793 BV |
233 | const struct sr_channel_group *cg) |
234 | { | |
0acdd793 | 235 | (void)sdi; |
0acdd793 BV |
236 | (void)cg; |
237 | ||
0acdd793 | 238 | switch (key) { |
6dcb9723 | 239 | case SR_CONF_SCAN_OPTIONS: |
584560f1 BV |
240 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
241 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
6dcb9723 BV |
242 | break; |
243 | case SR_CONF_DEVICE_OPTIONS: | |
584560f1 BV |
244 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
245 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
6dcb9723 | 246 | break; |
0acdd793 BV |
247 | default: |
248 | return SR_ERR_NA; | |
249 | } | |
250 | ||
6dcb9723 | 251 | return SR_OK; |
0acdd793 BV |
252 | } |
253 | ||
6dcb9723 | 254 | static void receive_data(struct sr_dev_inst *sdi, unsigned char *data, int len) |
0acdd793 | 255 | { |
6dcb9723 BV |
256 | struct dev_context *devc; |
257 | int packet_size; | |
87895640 | 258 | uint16_t crc; |
6dcb9723 BV |
259 | |
260 | devc = sdi->priv; | |
261 | ||
262 | if (devc->reply_size + len > MAX_REPLY_SIZE) { | |
263 | /* Something went very wrong. */ | |
264 | sr_dbg("Receive buffer overrun."); | |
265 | devc->reply_size = 0; | |
266 | return; | |
267 | } | |
268 | ||
269 | memcpy(devc->reply + devc->reply_size, data, len); | |
270 | devc->reply_size += len; | |
271 | /* Sixth byte contains the length of the packet. */ | |
87895640 BV |
272 | if (devc->reply_size < 7) |
273 | return; | |
274 | ||
275 | packet_size = 7 + devc->reply[6] * 7 + 2; | |
276 | if (devc->reply_size < packet_size) | |
277 | return; | |
278 | ||
279 | if (!testo_check_packet_prefix(devc->reply, devc->reply_size)) | |
280 | return; | |
281 | ||
282 | crc = crc16_mcrf4xx(0xffff, devc->reply, devc->reply_size - 2); | |
88b1d4e5 | 283 | if (crc == RL16(&devc->reply[devc->reply_size - 2])) { |
87895640 | 284 | testo_receive_packet(sdi); |
91b77e6b | 285 | sr_sw_limits_update_samples_read(&devc->sw_limits, 1); |
87895640 BV |
286 | } else { |
287 | sr_dbg("Packet has invalid CRC."); | |
6dcb9723 BV |
288 | } |
289 | ||
87895640 | 290 | devc->reply_size = 0; |
91b77e6b | 291 | if (sr_sw_limits_check(&devc->sw_limits)) |
695dc859 | 292 | dev_acquisition_stop(sdi); |
87895640 BV |
293 | else |
294 | testo_request_packet(sdi); | |
295 | ||
6dcb9723 BV |
296 | } |
297 | ||
55462b8b | 298 | SR_PRIV void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer) |
6dcb9723 BV |
299 | { |
300 | struct dev_context *devc; | |
301 | struct sr_dev_inst *sdi; | |
302 | int ret; | |
303 | ||
304 | sdi = transfer->user_data; | |
305 | devc = sdi->priv; | |
306 | if (transfer == devc->out_transfer) | |
307 | /* Just the command acknowledgement. */ | |
308 | return; | |
309 | ||
310 | if (transfer->status == LIBUSB_TRANSFER_NO_DEVICE) { | |
311 | /* USB device was unplugged. */ | |
695dc859 | 312 | dev_acquisition_stop(sdi); |
6dcb9723 BV |
313 | } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED) { |
314 | /* First two bytes in any transfer are FTDI status bytes. */ | |
315 | if (transfer->actual_length > 2) | |
316 | receive_data(sdi, transfer->buffer + 2, transfer->actual_length - 2); | |
317 | } | |
318 | /* Anything else is either an error or a timeout, which is fine: | |
319 | * we were just going to send another transfer request anyway. */ | |
320 | ||
321 | if (sdi->status == SR_ST_ACTIVE) { | |
322 | if ((ret = libusb_submit_transfer(transfer) != 0)) { | |
323 | sr_err("Unable to resubmit transfer: %s.", | |
324 | libusb_error_name(ret)); | |
325 | g_free(transfer->buffer); | |
326 | libusb_free_transfer(transfer); | |
695dc859 | 327 | dev_acquisition_stop(sdi); |
6dcb9723 BV |
328 | } |
329 | } else { | |
330 | /* This was the last transfer we're going to receive, so | |
331 | * clean up now. */ | |
332 | g_free(transfer->buffer); | |
333 | libusb_free_transfer(transfer); | |
334 | } | |
335 | } | |
336 | ||
337 | static int handle_events(int fd, int revents, void *cb_data) | |
338 | { | |
4f840ce9 | 339 | struct sr_dev_driver *di; |
6dcb9723 | 340 | struct dev_context *devc; |
4f840ce9 | 341 | struct drv_context *drvc; |
6dcb9723 BV |
342 | struct sr_dev_inst *sdi; |
343 | struct timeval tv; | |
6dcb9723 BV |
344 | |
345 | (void)fd; | |
346 | (void)revents; | |
347 | ||
348 | sdi = cb_data; | |
349 | devc = sdi->priv; | |
4f840ce9 | 350 | di = sdi->driver; |
41812aca | 351 | drvc = di->context; |
6dcb9723 | 352 | |
91b77e6b LPC |
353 | if (sr_sw_limits_check(&devc->sw_limits)) |
354 | dev_acquisition_stop(sdi); | |
6dcb9723 BV |
355 | |
356 | if (sdi->status == SR_ST_STOPPING) { | |
102f1239 | 357 | usb_source_remove(sdi->session, drvc->sr_ctx); |
6dcb9723 | 358 | dev_close(sdi); |
3be42bc2 | 359 | std_session_send_df_end(sdi, LOG_PREFIX); |
6dcb9723 BV |
360 | } |
361 | ||
362 | memset(&tv, 0, sizeof(struct timeval)); | |
363 | libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv, | |
364 | NULL); | |
365 | ||
366 | return TRUE; | |
367 | } | |
368 | ||
695dc859 | 369 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) |
6dcb9723 | 370 | { |
4f840ce9 | 371 | struct sr_dev_driver *di = sdi->driver; |
6dcb9723 BV |
372 | struct drv_context *drvc; |
373 | struct dev_context *devc; | |
374 | struct sr_usb_dev_inst *usb; | |
375 | struct libusb_transfer *transfer; | |
376 | int ret; | |
377 | unsigned char *buf; | |
0acdd793 | 378 | |
41812aca | 379 | drvc = di->context; |
0acdd793 BV |
380 | if (sdi->status != SR_ST_ACTIVE) |
381 | return SR_ERR_DEV_CLOSED; | |
382 | ||
6dcb9723 BV |
383 | |
384 | devc = sdi->priv; | |
385 | usb = sdi->conn; | |
6dcb9723 BV |
386 | devc->reply_size = 0; |
387 | ||
695dc859 | 388 | std_session_send_df_header(sdi, LOG_PREFIX); |
6dcb9723 | 389 | |
102f1239 BV |
390 | usb_source_add(sdi->session, drvc->sr_ctx, 100, |
391 | handle_events, (void *)sdi); | |
6dcb9723 BV |
392 | |
393 | if (testo_set_serial_params(usb) != SR_OK) | |
394 | return SR_ERR; | |
395 | ||
396 | devc->out_transfer = libusb_alloc_transfer(0); | |
397 | if (testo_request_packet(sdi) != SR_OK) | |
398 | return SR_ERR; | |
399 | ||
a95f142e | 400 | buf = g_malloc(MAX_REPLY_SIZE); |
6dcb9723 BV |
401 | transfer = libusb_alloc_transfer(0); |
402 | libusb_fill_bulk_transfer(transfer, usb->devhdl, EP_IN, buf, | |
403 | MAX_REPLY_SIZE, receive_transfer, (void *)sdi, 100); | |
404 | if ((ret = libusb_submit_transfer(transfer) != 0)) { | |
405 | sr_err("Unable to submit transfer: %s.", libusb_error_name(ret)); | |
406 | libusb_free_transfer(transfer); | |
407 | g_free(buf); | |
408 | return SR_ERR; | |
409 | } | |
410 | devc->reply_size = 0; | |
0acdd793 | 411 | |
91b77e6b LPC |
412 | sr_sw_limits_acquisition_start(&devc->sw_limits); |
413 | ||
0acdd793 BV |
414 | return SR_OK; |
415 | } | |
416 | ||
695dc859 | 417 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) |
0acdd793 | 418 | { |
0acdd793 BV |
419 | if (sdi->status != SR_ST_ACTIVE) |
420 | return SR_ERR_DEV_CLOSED; | |
421 | ||
6dcb9723 | 422 | sdi->status = SR_ST_STOPPING; |
0acdd793 BV |
423 | |
424 | return SR_OK; | |
425 | } | |
426 | ||
427 | SR_PRIV struct sr_dev_driver testo_driver_info = { | |
428 | .name = "testo", | |
429 | .longname = "Testo", | |
430 | .api_version = 1, | |
c2fdcc25 | 431 | .init = std_init, |
700d6b64 | 432 | .cleanup = std_cleanup, |
0acdd793 | 433 | .scan = scan, |
c01bf34c | 434 | .dev_list = std_dev_list, |
0acdd793 BV |
435 | .config_get = config_get, |
436 | .config_set = config_set, | |
437 | .config_list = config_list, | |
438 | .dev_open = dev_open, | |
439 | .dev_close = dev_close, | |
440 | .dev_acquisition_start = dev_acquisition_start, | |
441 | .dev_acquisition_stop = dev_acquisition_stop, | |
41812aca | 442 | .context = NULL, |
0acdd793 | 443 | }; |