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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" |
6dcb9723 | 25 | |
584560f1 | 26 | static const uint32_t scanopts[] = { |
6dcb9723 BV |
27 | SR_CONF_CONN, |
28 | }; | |
29 | ||
584560f1 | 30 | static const uint32_t devopts[] = { |
6dcb9723 | 31 | SR_CONF_MULTIMETER, |
6dcb9723 | 32 | SR_CONF_CONTINUOUS, |
91b77e6b LPC |
33 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET | SR_CONF_GET, |
34 | SR_CONF_LIMIT_MSEC | SR_CONF_SET | SR_CONF_GET, | |
6dcb9723 BV |
35 | }; |
36 | ||
329733d9 UH |
37 | static const uint8_t TESTO_x35_REQUEST[] = { 0x12, 0, 0, 0, 1, 1, 0x55, 0xd1, 0xb7 }; |
38 | ||
39 | static const struct testo_model models[] = { | |
6dcb9723 BV |
40 | { "435", 9, TESTO_x35_REQUEST }, |
41 | }; | |
0acdd793 | 42 | |
4f840ce9 | 43 | static GSList *scan(struct sr_dev_driver *di, GSList *options) |
0acdd793 BV |
44 | { |
45 | struct drv_context *drvc; | |
6dcb9723 BV |
46 | struct dev_context *devc; |
47 | struct sr_config *src; | |
48 | struct sr_dev_inst *sdi; | |
49 | struct sr_usb_dev_inst *usb; | |
50 | struct libusb_device_descriptor des; | |
51 | libusb_device **devlist; | |
52 | struct libusb_device_handle *hdl; | |
53 | GSList *conn_devices, *devices, *l; | |
bde9fbd1 | 54 | int ret, i; |
6dcb9723 | 55 | const char *str; |
bde9fbd1 | 56 | char manufacturer[64], product[64], connection_id[64]; |
0acdd793 BV |
57 | |
58 | devices = NULL; | |
41812aca | 59 | drvc = di->context; |
0acdd793 | 60 | |
6dcb9723 BV |
61 | conn_devices = NULL; |
62 | for (l = options; l; l = l->next) { | |
63 | src = l->data; | |
64 | if (src->key != SR_CONF_CONN) | |
65 | continue; | |
66 | str = g_variant_get_string(src->data, NULL); | |
67 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, str); | |
68 | } | |
69 | ||
70 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
71 | for (i = 0; devlist[i]; i++) { | |
72 | if (conn_devices) { | |
73 | usb = NULL; | |
74 | for (l = conn_devices; l; l = l->next) { | |
75 | usb = l->data; | |
76 | if (usb->bus == libusb_get_bus_number(devlist[i]) | |
77 | && usb->address == libusb_get_device_address(devlist[i])) | |
78 | break; | |
79 | } | |
80 | if (!l) | |
81 | /* This device matched none of the ones that | |
82 | * matched the conn specification. */ | |
83 | continue; | |
84 | } | |
85 | ||
2a8f2d41 | 86 | libusb_get_device_descriptor(devlist[i], &des); |
6dcb9723 BV |
87 | |
88 | if ((ret = libusb_open(devlist[i], &hdl)) < 0) | |
89 | continue; | |
90 | ||
91 | manufacturer[0] = product[0] = '\0'; | |
92 | if (des.iManufacturer && (ret = libusb_get_string_descriptor_ascii( | |
93 | hdl, des.iManufacturer, (unsigned char *) manufacturer, | |
94 | sizeof(manufacturer))) < 0) { | |
95 | sr_warn("Failed to get manufacturer string descriptor: %s.", | |
96 | libusb_error_name(ret)); | |
97 | } | |
98 | if (des.iProduct && (ret = libusb_get_string_descriptor_ascii( | |
99 | hdl, des.iProduct, (unsigned char *) product, | |
100 | sizeof(product))) < 0) { | |
101 | sr_warn("Failed to get product string descriptor: %s.", | |
102 | libusb_error_name(ret)); | |
103 | } | |
104 | libusb_close(hdl); | |
105 | ||
106 | if (strncmp(manufacturer, "testo", 5)) | |
107 | continue; | |
108 | ||
bde9fbd1 SA |
109 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); |
110 | ||
6dcb9723 BV |
111 | /* Hardcode the 435 for now.*/ |
112 | if (strcmp(product, "testo 435/635/735")) | |
113 | continue; | |
114 | ||
aac29cc1 | 115 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
0af636be UH |
116 | sdi->status = SR_ST_INACTIVE; |
117 | sdi->vendor = g_strdup("Testo"); | |
118 | sdi->model = g_strdup("435/635/735"); | |
6dcb9723 BV |
119 | sdi->driver = di; |
120 | sdi->inst_type = SR_INST_USB; | |
121 | sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]), | |
122 | libusb_get_device_address(devlist[i]), NULL); | |
bde9fbd1 | 123 | sdi->connection_id = g_strdup(connection_id); |
6dcb9723 BV |
124 | devc = g_malloc(sizeof(struct dev_context)); |
125 | devc->model = &models[0]; | |
91b77e6b | 126 | sr_sw_limits_init(&devc->sw_limits); |
6dcb9723 BV |
127 | sdi->priv = devc; |
128 | if (testo_probe_channels(sdi) != SR_OK) | |
129 | continue; | |
6dcb9723 BV |
130 | devices = g_slist_append(devices, sdi); |
131 | } | |
132 | libusb_free_device_list(devlist, 1); | |
133 | g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free); | |
0acdd793 | 134 | |
15a5bfe4 | 135 | return std_scan_complete(di, devices); |
0acdd793 BV |
136 | } |
137 | ||
0acdd793 BV |
138 | static int dev_open(struct sr_dev_inst *sdi) |
139 | { | |
4f840ce9 | 140 | struct sr_dev_driver *di = sdi->driver; |
41812aca | 141 | struct drv_context *drvc = di->context; |
6dcb9723 | 142 | struct sr_usb_dev_inst *usb; |
b75dc14a | 143 | int ret; |
6dcb9723 | 144 | |
6dcb9723 | 145 | usb = sdi->conn; |
b75dc14a LPC |
146 | |
147 | ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb); | |
148 | if (ret != SR_OK) | |
149 | return ret; | |
0acdd793 | 150 | |
88b1d4e5 BV |
151 | if (libusb_has_capability(LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER)) { |
152 | if (libusb_kernel_driver_active(usb->devhdl, 0) == 1) { | |
153 | if ((ret = libusb_detach_kernel_driver(usb->devhdl, 0)) < 0) { | |
154 | sr_err("Failed to detach kernel driver: %s.", | |
155 | libusb_error_name(ret)); | |
156 | return SR_ERR; | |
157 | } | |
158 | } | |
159 | } | |
160 | ||
6dcb9723 BV |
161 | if ((ret = libusb_claim_interface(usb->devhdl, 0))) { |
162 | sr_err("Failed to claim interface: %s.", libusb_error_name(ret)); | |
163 | return SR_ERR; | |
164 | } | |
0acdd793 BV |
165 | sdi->status = SR_ST_ACTIVE; |
166 | ||
167 | return SR_OK; | |
168 | } | |
169 | ||
170 | static int dev_close(struct sr_dev_inst *sdi) | |
171 | { | |
6dcb9723 BV |
172 | struct sr_usb_dev_inst *usb; |
173 | ||
6dcb9723 BV |
174 | usb = sdi->conn; |
175 | if (!usb->devhdl) | |
d9251a2c | 176 | /* Nothing to do. */ |
6dcb9723 | 177 | return SR_OK; |
0acdd793 | 178 | |
6dcb9723 BV |
179 | libusb_release_interface(usb->devhdl, 0); |
180 | libusb_close(usb->devhdl); | |
181 | usb->devhdl = NULL; | |
0acdd793 BV |
182 | sdi->status = SR_ST_INACTIVE; |
183 | ||
184 | return SR_OK; | |
185 | } | |
186 | ||
584560f1 | 187 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
0acdd793 BV |
188 | const struct sr_channel_group *cg) |
189 | { | |
91b77e6b | 190 | struct dev_context *devc = sdi->priv; |
6dcb9723 BV |
191 | struct sr_usb_dev_inst *usb; |
192 | char str[128]; | |
0acdd793 | 193 | |
0acdd793 BV |
194 | (void)cg; |
195 | ||
0acdd793 | 196 | switch (key) { |
6dcb9723 BV |
197 | case SR_CONF_CONN: |
198 | if (!sdi || !sdi->conn) | |
199 | return SR_ERR_ARG; | |
200 | usb = sdi->conn; | |
201 | snprintf(str, 128, "%d.%d", usb->bus, usb->address); | |
202 | *data = g_variant_new_string(str); | |
203 | break; | |
91b77e6b LPC |
204 | case SR_CONF_LIMIT_MSEC: |
205 | case SR_CONF_LIMIT_SAMPLES: | |
206 | return sr_sw_limits_config_get(&devc->sw_limits, key, data); | |
0acdd793 BV |
207 | default: |
208 | return SR_ERR_NA; | |
209 | } | |
210 | ||
6dcb9723 | 211 | return SR_OK; |
0acdd793 BV |
212 | } |
213 | ||
584560f1 | 214 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
0acdd793 BV |
215 | const struct sr_channel_group *cg) |
216 | { | |
91b77e6b | 217 | struct dev_context *devc = sdi->priv; |
0acdd793 | 218 | |
0acdd793 BV |
219 | (void)cg; |
220 | ||
91b77e6b | 221 | return sr_sw_limits_config_set(&devc->sw_limits, key, data); |
0acdd793 BV |
222 | } |
223 | ||
584560f1 | 224 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
0acdd793 BV |
225 | const struct sr_channel_group *cg) |
226 | { | |
0acdd793 | 227 | (void)sdi; |
0acdd793 BV |
228 | (void)cg; |
229 | ||
0acdd793 | 230 | switch (key) { |
6dcb9723 | 231 | case SR_CONF_SCAN_OPTIONS: |
584560f1 BV |
232 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
233 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
6dcb9723 BV |
234 | break; |
235 | case SR_CONF_DEVICE_OPTIONS: | |
584560f1 BV |
236 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
237 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
6dcb9723 | 238 | break; |
0acdd793 BV |
239 | default: |
240 | return SR_ERR_NA; | |
241 | } | |
242 | ||
6dcb9723 | 243 | return SR_OK; |
0acdd793 BV |
244 | } |
245 | ||
6dcb9723 | 246 | static void receive_data(struct sr_dev_inst *sdi, unsigned char *data, int len) |
0acdd793 | 247 | { |
6dcb9723 BV |
248 | struct dev_context *devc; |
249 | int packet_size; | |
87895640 | 250 | uint16_t crc; |
6dcb9723 BV |
251 | |
252 | devc = sdi->priv; | |
253 | ||
254 | if (devc->reply_size + len > MAX_REPLY_SIZE) { | |
255 | /* Something went very wrong. */ | |
256 | sr_dbg("Receive buffer overrun."); | |
257 | devc->reply_size = 0; | |
258 | return; | |
259 | } | |
260 | ||
261 | memcpy(devc->reply + devc->reply_size, data, len); | |
262 | devc->reply_size += len; | |
263 | /* Sixth byte contains the length of the packet. */ | |
87895640 BV |
264 | if (devc->reply_size < 7) |
265 | return; | |
266 | ||
267 | packet_size = 7 + devc->reply[6] * 7 + 2; | |
268 | if (devc->reply_size < packet_size) | |
269 | return; | |
270 | ||
271 | if (!testo_check_packet_prefix(devc->reply, devc->reply_size)) | |
272 | return; | |
273 | ||
274 | crc = crc16_mcrf4xx(0xffff, devc->reply, devc->reply_size - 2); | |
88b1d4e5 | 275 | if (crc == RL16(&devc->reply[devc->reply_size - 2])) { |
87895640 | 276 | testo_receive_packet(sdi); |
91b77e6b | 277 | sr_sw_limits_update_samples_read(&devc->sw_limits, 1); |
87895640 BV |
278 | } else { |
279 | sr_dbg("Packet has invalid CRC."); | |
6dcb9723 BV |
280 | } |
281 | ||
87895640 | 282 | devc->reply_size = 0; |
91b77e6b | 283 | if (sr_sw_limits_check(&devc->sw_limits)) |
d2f7c417 | 284 | sr_dev_acquisition_stop(sdi); |
87895640 BV |
285 | else |
286 | testo_request_packet(sdi); | |
287 | ||
6dcb9723 BV |
288 | } |
289 | ||
55462b8b | 290 | SR_PRIV void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer) |
6dcb9723 BV |
291 | { |
292 | struct dev_context *devc; | |
293 | struct sr_dev_inst *sdi; | |
294 | int ret; | |
295 | ||
296 | sdi = transfer->user_data; | |
297 | devc = sdi->priv; | |
298 | if (transfer == devc->out_transfer) | |
299 | /* Just the command acknowledgement. */ | |
300 | return; | |
301 | ||
302 | if (transfer->status == LIBUSB_TRANSFER_NO_DEVICE) { | |
303 | /* USB device was unplugged. */ | |
d2f7c417 | 304 | sr_dev_acquisition_stop(sdi); |
6dcb9723 BV |
305 | } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED) { |
306 | /* First two bytes in any transfer are FTDI status bytes. */ | |
307 | if (transfer->actual_length > 2) | |
308 | receive_data(sdi, transfer->buffer + 2, transfer->actual_length - 2); | |
309 | } | |
310 | /* Anything else is either an error or a timeout, which is fine: | |
311 | * we were just going to send another transfer request anyway. */ | |
312 | ||
313 | if (sdi->status == SR_ST_ACTIVE) { | |
314 | if ((ret = libusb_submit_transfer(transfer) != 0)) { | |
315 | sr_err("Unable to resubmit transfer: %s.", | |
316 | libusb_error_name(ret)); | |
317 | g_free(transfer->buffer); | |
318 | libusb_free_transfer(transfer); | |
d2f7c417 | 319 | sr_dev_acquisition_stop(sdi); |
6dcb9723 BV |
320 | } |
321 | } else { | |
322 | /* This was the last transfer we're going to receive, so | |
323 | * clean up now. */ | |
324 | g_free(transfer->buffer); | |
325 | libusb_free_transfer(transfer); | |
326 | } | |
327 | } | |
328 | ||
329 | static int handle_events(int fd, int revents, void *cb_data) | |
330 | { | |
4f840ce9 | 331 | struct sr_dev_driver *di; |
6dcb9723 | 332 | struct dev_context *devc; |
4f840ce9 | 333 | struct drv_context *drvc; |
6dcb9723 BV |
334 | struct sr_dev_inst *sdi; |
335 | struct timeval tv; | |
6dcb9723 BV |
336 | |
337 | (void)fd; | |
338 | (void)revents; | |
339 | ||
340 | sdi = cb_data; | |
341 | devc = sdi->priv; | |
4f840ce9 | 342 | di = sdi->driver; |
41812aca | 343 | drvc = di->context; |
6dcb9723 | 344 | |
91b77e6b | 345 | if (sr_sw_limits_check(&devc->sw_limits)) |
d2f7c417 | 346 | sr_dev_acquisition_stop(sdi); |
6dcb9723 BV |
347 | |
348 | if (sdi->status == SR_ST_STOPPING) { | |
102f1239 | 349 | usb_source_remove(sdi->session, drvc->sr_ctx); |
6dcb9723 | 350 | dev_close(sdi); |
bee2b016 | 351 | std_session_send_df_end(sdi); |
6dcb9723 BV |
352 | } |
353 | ||
354 | memset(&tv, 0, sizeof(struct timeval)); | |
355 | libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv, | |
356 | NULL); | |
357 | ||
358 | return TRUE; | |
359 | } | |
360 | ||
695dc859 | 361 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) |
6dcb9723 | 362 | { |
4f840ce9 | 363 | struct sr_dev_driver *di = sdi->driver; |
6dcb9723 BV |
364 | struct drv_context *drvc; |
365 | struct dev_context *devc; | |
366 | struct sr_usb_dev_inst *usb; | |
367 | struct libusb_transfer *transfer; | |
368 | int ret; | |
369 | unsigned char *buf; | |
0acdd793 | 370 | |
41812aca | 371 | drvc = di->context; |
6dcb9723 BV |
372 | devc = sdi->priv; |
373 | usb = sdi->conn; | |
6dcb9723 BV |
374 | devc->reply_size = 0; |
375 | ||
bee2b016 | 376 | std_session_send_df_header(sdi); |
6dcb9723 | 377 | |
102f1239 BV |
378 | usb_source_add(sdi->session, drvc->sr_ctx, 100, |
379 | handle_events, (void *)sdi); | |
6dcb9723 BV |
380 | |
381 | if (testo_set_serial_params(usb) != SR_OK) | |
382 | return SR_ERR; | |
383 | ||
384 | devc->out_transfer = libusb_alloc_transfer(0); | |
385 | if (testo_request_packet(sdi) != SR_OK) | |
386 | return SR_ERR; | |
387 | ||
a95f142e | 388 | buf = g_malloc(MAX_REPLY_SIZE); |
6dcb9723 BV |
389 | transfer = libusb_alloc_transfer(0); |
390 | libusb_fill_bulk_transfer(transfer, usb->devhdl, EP_IN, buf, | |
391 | MAX_REPLY_SIZE, receive_transfer, (void *)sdi, 100); | |
392 | if ((ret = libusb_submit_transfer(transfer) != 0)) { | |
393 | sr_err("Unable to submit transfer: %s.", libusb_error_name(ret)); | |
394 | libusb_free_transfer(transfer); | |
395 | g_free(buf); | |
396 | return SR_ERR; | |
397 | } | |
398 | devc->reply_size = 0; | |
0acdd793 | 399 | |
91b77e6b LPC |
400 | sr_sw_limits_acquisition_start(&devc->sw_limits); |
401 | ||
0acdd793 BV |
402 | return SR_OK; |
403 | } | |
404 | ||
695dc859 | 405 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) |
0acdd793 | 406 | { |
6dcb9723 | 407 | sdi->status = SR_ST_STOPPING; |
0acdd793 BV |
408 | |
409 | return SR_OK; | |
410 | } | |
411 | ||
dd5c48a6 | 412 | static struct sr_dev_driver testo_driver_info = { |
0acdd793 BV |
413 | .name = "testo", |
414 | .longname = "Testo", | |
415 | .api_version = 1, | |
c2fdcc25 | 416 | .init = std_init, |
700d6b64 | 417 | .cleanup = std_cleanup, |
0acdd793 | 418 | .scan = scan, |
c01bf34c | 419 | .dev_list = std_dev_list, |
0acdd793 BV |
420 | .config_get = config_get, |
421 | .config_set = config_set, | |
422 | .config_list = config_list, | |
423 | .dev_open = dev_open, | |
424 | .dev_close = dev_close, | |
425 | .dev_acquisition_start = dev_acquisition_start, | |
426 | .dev_acquisition_stop = dev_acquisition_stop, | |
41812aca | 427 | .context = NULL, |
0acdd793 | 428 | }; |
dd5c48a6 | 429 | SR_REGISTER_DEV_DRIVER(testo_driver_info); |