2 * This file is part of the libsigrok project.
4 * Copyright (C) 2014 Bert Vermeulen <bert@biot.com>
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.
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.
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/>.
23 #define SERIALCOMM "115200/8n1"
25 SR_PRIV struct sr_dev_driver testo_driver_info;
26 static struct sr_dev_driver *di = &testo_driver_info;
27 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
29 static const int32_t scanopts[] = {
33 static const int32_t devopts[] = {
36 SR_CONF_LIMIT_SAMPLES,
40 unsigned char TESTO_x35_REQUEST[] = { 0x12, 0, 0, 0, 1, 1, 0x55, 0xd1, 0xb7 };
41 struct testo_model models[] = {
42 { "435", 9, TESTO_x35_REQUEST },
45 static int init(struct sr_context *sr_ctx)
47 return std_init(sr_ctx, di, LOG_PREFIX);
50 static GSList *scan(GSList *options)
52 struct drv_context *drvc;
53 struct dev_context *devc;
54 struct sr_config *src;
55 struct sr_dev_inst *sdi;
56 struct sr_usb_dev_inst *usb;
57 struct libusb_device_descriptor des;
58 libusb_device **devlist;
59 struct libusb_device_handle *hdl;
60 GSList *conn_devices, *devices, *l;
63 char manufacturer[64], product[64];
67 drvc->instances = NULL;
70 for (l = options; l; l = l->next) {
72 if (src->key != SR_CONF_CONN)
74 str = g_variant_get_string(src->data, NULL);
75 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, str);
78 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
79 for (i = 0; devlist[i]; i++) {
82 for (l = conn_devices; l; l = l->next) {
84 if (usb->bus == libusb_get_bus_number(devlist[i])
85 && usb->address == libusb_get_device_address(devlist[i]))
89 /* This device matched none of the ones that
90 * matched the conn specification. */
94 if ((ret = libusb_get_device_descriptor( devlist[i], &des)) != 0) {
95 sr_warn("Failed to get device descriptor: %s.",
96 libusb_error_name(ret));
100 if ((ret = libusb_open(devlist[i], &hdl)) < 0)
103 manufacturer[0] = product[0] = '\0';
104 if (des.iManufacturer && (ret = libusb_get_string_descriptor_ascii(
105 hdl, des.iManufacturer, (unsigned char *) manufacturer,
106 sizeof(manufacturer))) < 0) {
107 sr_warn("Failed to get manufacturer string descriptor: %s.",
108 libusb_error_name(ret));
110 if (des.iProduct && (ret = libusb_get_string_descriptor_ascii(
111 hdl, des.iProduct, (unsigned char *) product,
112 sizeof(product))) < 0) {
113 sr_warn("Failed to get product string descriptor: %s.",
114 libusb_error_name(ret));
118 if (strncmp(manufacturer, "testo", 5))
121 /* Hardcode the 435 for now.*/
122 if (strcmp(product, "testo 435/635/735"))
125 devcnt = g_slist_length(drvc->instances);
126 sdi = sr_dev_inst_new(devcnt, SR_ST_INACTIVE, "Testo",
127 "435/635/735", NULL);
129 sdi->inst_type = SR_INST_USB;
130 sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
131 libusb_get_device_address(devlist[i]), NULL);
132 devc = g_malloc(sizeof(struct dev_context));
133 devc->model = &models[0];
134 devc->limit_msec = 0;
135 devc->limit_samples = 0;
137 if (testo_probe_channels(sdi) != SR_OK)
139 drvc->instances = g_slist_append(drvc->instances, sdi);
140 devices = g_slist_append(devices, sdi);
142 libusb_free_device_list(devlist, 1);
143 g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
148 static GSList *dev_list(void)
150 return ((struct drv_context *)(di->priv))->instances;
153 static int dev_clear(void)
155 return std_dev_clear(di, NULL);
158 static int dev_open(struct sr_dev_inst *sdi)
160 struct drv_context *drvc = di->priv;
161 struct sr_usb_dev_inst *usb;
162 libusb_device **devlist;
166 sr_err("Driver was not initialized.");
171 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
172 for (i = 0; devlist[i]; i++) {
173 if (libusb_get_bus_number(devlist[i]) != usb->bus
174 || libusb_get_device_address(devlist[i]) != usb->address)
176 if ((ret = libusb_open(devlist[i], &usb->devhdl))) {
177 sr_err("Failed to open device: %s.", libusb_error_name(ret));
182 libusb_free_device_list(devlist, 1);
184 sr_err("Device not found.");
188 if (libusb_has_capability(LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER)) {
189 if (libusb_kernel_driver_active(usb->devhdl, 0) == 1) {
190 if ((ret = libusb_detach_kernel_driver(usb->devhdl, 0)) < 0) {
191 sr_err("Failed to detach kernel driver: %s.",
192 libusb_error_name(ret));
198 if ((ret = libusb_claim_interface(usb->devhdl, 0))) {
199 sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
202 sdi->status = SR_ST_ACTIVE;
207 static int dev_close(struct sr_dev_inst *sdi)
209 struct sr_usb_dev_inst *usb;
212 sr_err("Driver was not initialized.");
221 libusb_release_interface(usb->devhdl, 0);
222 libusb_close(usb->devhdl);
224 sdi->status = SR_ST_INACTIVE;
229 static int cleanup(void)
232 struct drv_context *drvc;
234 if (!(drvc = di->priv))
244 static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
245 const struct sr_channel_group *cg)
247 struct sr_usb_dev_inst *usb;
254 if (!sdi || !sdi->conn)
257 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
258 *data = g_variant_new_string(str);
267 static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
268 const struct sr_channel_group *cg)
270 struct dev_context *devc;
276 if (sdi->status != SR_ST_ACTIVE)
277 return SR_ERR_DEV_CLOSED;
280 sr_err("Driver was not initialized.");
287 case SR_CONF_LIMIT_MSEC:
288 devc->limit_msec = g_variant_get_uint64(data);
289 now = g_get_monotonic_time() / 1000;
290 devc->end_time = now + devc->limit_msec;
291 sr_dbg("Setting time limit to %" PRIu64 "ms.",
294 case SR_CONF_LIMIT_SAMPLES:
295 devc->limit_samples = g_variant_get_uint64(data);
296 sr_dbg("Setting sample limit to %" PRIu64 ".",
297 devc->limit_samples);
306 static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
307 const struct sr_channel_group *cg)
313 case SR_CONF_SCAN_OPTIONS:
314 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
315 scanopts, ARRAY_SIZE(scanopts), sizeof(int32_t));
317 case SR_CONF_DEVICE_OPTIONS:
318 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
319 devopts, ARRAY_SIZE(devopts), sizeof(int32_t));
328 static void receive_data(struct sr_dev_inst *sdi, unsigned char *data, int len)
330 struct dev_context *devc;
336 if (devc->reply_size + len > MAX_REPLY_SIZE) {
337 /* Something went very wrong. */
338 sr_dbg("Receive buffer overrun.");
339 devc->reply_size = 0;
343 memcpy(devc->reply + devc->reply_size, data, len);
344 devc->reply_size += len;
345 /* Sixth byte contains the length of the packet. */
346 if (devc->reply_size < 7)
349 packet_size = 7 + devc->reply[6] * 7 + 2;
350 if (devc->reply_size < packet_size)
353 if (!testo_check_packet_prefix(devc->reply, devc->reply_size))
356 crc = crc16_mcrf4xx(0xffff, devc->reply, devc->reply_size - 2);
357 if (crc == RL16(&devc->reply[devc->reply_size - 2])) {
358 testo_receive_packet(sdi);
361 sr_dbg("Packet has invalid CRC.");
364 devc->reply_size = 0;
365 if (devc->limit_samples && devc->num_samples >= devc->limit_samples)
366 dev_acquisition_stop(sdi, devc->cb_data);
368 testo_request_packet(sdi);
372 SR_PRIV void receive_transfer(struct libusb_transfer *transfer)
374 struct dev_context *devc;
375 struct sr_dev_inst *sdi;
378 sdi = transfer->user_data;
380 if (transfer == devc->out_transfer)
381 /* Just the command acknowledgement. */
384 if (transfer->status == LIBUSB_TRANSFER_NO_DEVICE) {
385 /* USB device was unplugged. */
386 dev_acquisition_stop(sdi, devc->cb_data);
387 } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED) {
388 /* First two bytes in any transfer are FTDI status bytes. */
389 if (transfer->actual_length > 2)
390 receive_data(sdi, transfer->buffer + 2, transfer->actual_length - 2);
392 /* Anything else is either an error or a timeout, which is fine:
393 * we were just going to send another transfer request anyway. */
395 if (sdi->status == SR_ST_ACTIVE) {
396 if ((ret = libusb_submit_transfer(transfer) != 0)) {
397 sr_err("Unable to resubmit transfer: %s.",
398 libusb_error_name(ret));
399 g_free(transfer->buffer);
400 libusb_free_transfer(transfer);
401 dev_acquisition_stop(sdi, devc->cb_data);
404 /* This was the last transfer we're going to receive, so
406 g_free(transfer->buffer);
407 libusb_free_transfer(transfer);
411 static int handle_events(int fd, int revents, void *cb_data)
413 struct dev_context *devc;
414 struct drv_context *drvc = di->priv;
415 struct sr_datafeed_packet packet;
416 struct sr_dev_inst *sdi;
426 if (devc->limit_msec) {
427 now = g_get_monotonic_time() / 1000;
428 if (now > devc->end_time)
429 dev_acquisition_stop(sdi, devc->cb_data);
432 if (sdi->status == SR_ST_STOPPING) {
433 usb_source_remove(drvc->sr_ctx);
437 packet.type = SR_DF_END;
438 sr_session_send(sdi, &packet);
441 memset(&tv, 0, sizeof(struct timeval));
442 libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv,
448 static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
450 struct drv_context *drvc;
451 struct dev_context *devc;
452 struct sr_usb_dev_inst *usb;
453 struct libusb_transfer *transfer;
458 if (sdi->status != SR_ST_ACTIVE)
459 return SR_ERR_DEV_CLOSED;
462 sr_err("Driver was not initialized.");
468 devc->cb_data = cb_data;
470 devc->num_samples = 0;
471 devc->reply_size = 0;
473 /* Send header packet to the session bus. */
474 std_session_send_df_header(cb_data, LOG_PREFIX);
476 usb_source_add(drvc->sr_ctx, 100, handle_events, (void *)sdi);
478 if (testo_set_serial_params(usb) != SR_OK)
481 devc->out_transfer = libusb_alloc_transfer(0);
482 if (testo_request_packet(sdi) != SR_OK)
485 buf = g_try_malloc(MAX_REPLY_SIZE);
486 transfer = libusb_alloc_transfer(0);
487 libusb_fill_bulk_transfer(transfer, usb->devhdl, EP_IN, buf,
488 MAX_REPLY_SIZE, receive_transfer, (void *)sdi, 100);
489 if ((ret = libusb_submit_transfer(transfer) != 0)) {
490 sr_err("Unable to submit transfer: %s.", libusb_error_name(ret));
491 libusb_free_transfer(transfer);
495 devc->reply_size = 0;
500 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
505 sr_err("Driver was not initialized.");
509 if (sdi->status != SR_ST_ACTIVE)
510 return SR_ERR_DEV_CLOSED;
512 sdi->status = SR_ST_STOPPING;
517 SR_PRIV struct sr_dev_driver testo_driver_info = {
524 .dev_list = dev_list,
525 .dev_clear = dev_clear,
526 .config_get = config_get,
527 .config_set = config_set,
528 .config_list = config_list,
529 .dev_open = dev_open,
530 .dev_close = dev_close,
531 .dev_acquisition_start = dev_acquisition_start,
532 .dev_acquisition_stop = dev_acquisition_stop,