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/>.
21 #include <libserialport.h>
24 #define SERIALCOMM "115200/8n1"
26 SR_PRIV struct sr_dev_driver testo_driver_info;
27 static struct sr_dev_driver *di = &testo_driver_info;
28 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
30 static const int32_t scanopts[] = {
34 static const int32_t devopts[] = {
37 SR_CONF_LIMIT_SAMPLES,
41 unsigned char TESTO_x35_REQUEST[] = { 0x12, 0, 0, 0, 1, 1, 0x55, 0xd1, 0xb7 };
42 struct testo_model models[] = {
43 { "435", 9, TESTO_x35_REQUEST },
46 static int init(struct sr_context *sr_ctx)
48 return std_init(sr_ctx, di, LOG_PREFIX);
51 static GSList *scan(GSList *options)
53 struct drv_context *drvc;
54 struct dev_context *devc;
55 struct sr_config *src;
56 struct sr_dev_inst *sdi;
57 struct sr_usb_dev_inst *usb;
58 struct libusb_device_descriptor des;
59 libusb_device **devlist;
60 struct libusb_device_handle *hdl;
61 GSList *conn_devices, *devices, *l;
64 char manufacturer[64], product[64];
68 drvc->instances = NULL;
71 for (l = options; l; l = l->next) {
73 if (src->key != SR_CONF_CONN)
75 str = g_variant_get_string(src->data, NULL);
76 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, str);
79 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
80 for (i = 0; devlist[i]; i++) {
83 for (l = conn_devices; l; l = l->next) {
85 if (usb->bus == libusb_get_bus_number(devlist[i])
86 && usb->address == libusb_get_device_address(devlist[i]))
90 /* This device matched none of the ones that
91 * matched the conn specification. */
95 if ((ret = libusb_get_device_descriptor( devlist[i], &des)) != 0) {
96 sr_warn("Failed to get device descriptor: %s.",
97 libusb_error_name(ret));
101 if ((ret = libusb_open(devlist[i], &hdl)) < 0)
104 manufacturer[0] = product[0] = '\0';
105 if (des.iManufacturer && (ret = libusb_get_string_descriptor_ascii(
106 hdl, des.iManufacturer, (unsigned char *) manufacturer,
107 sizeof(manufacturer))) < 0) {
108 sr_warn("Failed to get manufacturer string descriptor: %s.",
109 libusb_error_name(ret));
111 if (des.iProduct && (ret = libusb_get_string_descriptor_ascii(
112 hdl, des.iProduct, (unsigned char *) product,
113 sizeof(product))) < 0) {
114 sr_warn("Failed to get product string descriptor: %s.",
115 libusb_error_name(ret));
119 if (strncmp(manufacturer, "testo", 5))
122 /* Hardcode the 435 for now.*/
123 if (strcmp(product, "testo 435/635/735"))
126 devcnt = g_slist_length(drvc->instances);
127 sdi = sr_dev_inst_new(devcnt, SR_ST_INACTIVE, "Testo",
128 "435/635/735", NULL);
130 sdi->inst_type = SR_INST_USB;
131 sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
132 libusb_get_device_address(devlist[i]), NULL);
133 devc = g_malloc(sizeof(struct dev_context));
134 devc->model = &models[0];
135 devc->limit_msec = 0;
136 devc->limit_samples = 0;
138 if (testo_probe_channels(sdi) != SR_OK)
140 drvc->instances = g_slist_append(drvc->instances, sdi);
141 devices = g_slist_append(devices, sdi);
143 libusb_free_device_list(devlist, 1);
144 g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
149 static GSList *dev_list(void)
151 return ((struct drv_context *)(di->priv))->instances;
154 static int dev_clear(void)
156 return std_dev_clear(di, NULL);
159 static int dev_open(struct sr_dev_inst *sdi)
161 struct drv_context *drvc = di->priv;
162 struct sr_usb_dev_inst *usb;
163 libusb_device **devlist;
167 sr_err("Driver was not initialized.");
172 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
173 for (i = 0; devlist[i]; i++) {
174 if (libusb_get_bus_number(devlist[i]) != usb->bus
175 || libusb_get_device_address(devlist[i]) != usb->address)
177 if ((ret = libusb_open(devlist[i], &usb->devhdl))) {
178 sr_err("Failed to open device: %s.", libusb_error_name(ret));
183 libusb_free_device_list(devlist, 1);
185 sr_err("Device not found.");
189 if (libusb_has_capability(LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER)) {
190 if (libusb_kernel_driver_active(usb->devhdl, 0) == 1) {
191 if ((ret = libusb_detach_kernel_driver(usb->devhdl, 0)) < 0) {
192 sr_err("Failed to detach kernel driver: %s.",
193 libusb_error_name(ret));
199 if ((ret = libusb_claim_interface(usb->devhdl, 0))) {
200 sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
203 sdi->status = SR_ST_ACTIVE;
208 static int dev_close(struct sr_dev_inst *sdi)
210 struct sr_usb_dev_inst *usb;
213 sr_err("Driver was not initialized.");
222 libusb_release_interface(usb->devhdl, 0);
223 libusb_close(usb->devhdl);
225 sdi->status = SR_ST_INACTIVE;
230 static int cleanup(void)
233 struct drv_context *drvc;
235 if (!(drvc = di->priv))
245 static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
246 const struct sr_channel_group *cg)
248 struct sr_usb_dev_inst *usb;
255 if (!sdi || !sdi->conn)
258 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
259 *data = g_variant_new_string(str);
268 static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
269 const struct sr_channel_group *cg)
271 struct dev_context *devc;
277 if (sdi->status != SR_ST_ACTIVE)
278 return SR_ERR_DEV_CLOSED;
281 sr_err("Driver was not initialized.");
288 case SR_CONF_LIMIT_MSEC:
289 devc->limit_msec = g_variant_get_uint64(data);
290 now = g_get_monotonic_time() / 1000;
291 devc->end_time = now + devc->limit_msec;
292 sr_dbg("Setting time limit to %" PRIu64 "ms.",
295 case SR_CONF_LIMIT_SAMPLES:
296 devc->limit_samples = g_variant_get_uint64(data);
297 sr_dbg("Setting sample limit to %" PRIu64 ".",
298 devc->limit_samples);
307 static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
308 const struct sr_channel_group *cg)
314 case SR_CONF_SCAN_OPTIONS:
315 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
316 scanopts, ARRAY_SIZE(scanopts), sizeof(int32_t));
318 case SR_CONF_DEVICE_OPTIONS:
319 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
320 devopts, ARRAY_SIZE(devopts), sizeof(int32_t));
329 static void receive_data(struct sr_dev_inst *sdi, unsigned char *data, int len)
331 struct dev_context *devc;
337 if (devc->reply_size + len > MAX_REPLY_SIZE) {
338 /* Something went very wrong. */
339 sr_dbg("Receive buffer overrun.");
340 devc->reply_size = 0;
344 memcpy(devc->reply + devc->reply_size, data, len);
345 devc->reply_size += len;
346 /* Sixth byte contains the length of the packet. */
347 if (devc->reply_size < 7)
350 packet_size = 7 + devc->reply[6] * 7 + 2;
351 if (devc->reply_size < packet_size)
354 if (!testo_check_packet_prefix(devc->reply, devc->reply_size))
357 crc = crc16_mcrf4xx(0xffff, devc->reply, devc->reply_size - 2);
358 if (crc == RL16(&devc->reply[devc->reply_size - 2])) {
359 testo_receive_packet(sdi);
362 sr_dbg("Packet has invalid CRC.");
365 devc->reply_size = 0;
366 if (devc->limit_samples && devc->num_samples >= devc->limit_samples)
367 dev_acquisition_stop(sdi, devc->cb_data);
369 testo_request_packet(sdi);
373 SR_PRIV void receive_transfer(struct libusb_transfer *transfer)
375 struct dev_context *devc;
376 struct sr_dev_inst *sdi;
379 sdi = transfer->user_data;
381 if (transfer == devc->out_transfer)
382 /* Just the command acknowledgement. */
385 if (transfer->status == LIBUSB_TRANSFER_NO_DEVICE) {
386 /* USB device was unplugged. */
387 dev_acquisition_stop(sdi, devc->cb_data);
388 } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED) {
389 /* First two bytes in any transfer are FTDI status bytes. */
390 if (transfer->actual_length > 2)
391 receive_data(sdi, transfer->buffer + 2, transfer->actual_length - 2);
393 /* Anything else is either an error or a timeout, which is fine:
394 * we were just going to send another transfer request anyway. */
396 if (sdi->status == SR_ST_ACTIVE) {
397 if ((ret = libusb_submit_transfer(transfer) != 0)) {
398 sr_err("Unable to resubmit transfer: %s.",
399 libusb_error_name(ret));
400 g_free(transfer->buffer);
401 libusb_free_transfer(transfer);
402 dev_acquisition_stop(sdi, devc->cb_data);
405 /* This was the last transfer we're going to receive, so
407 g_free(transfer->buffer);
408 libusb_free_transfer(transfer);
412 static int handle_events(int fd, int revents, void *cb_data)
414 struct dev_context *devc;
415 struct drv_context *drvc = di->priv;
416 struct sr_datafeed_packet packet;
417 struct sr_dev_inst *sdi;
427 if (devc->limit_msec) {
428 now = g_get_monotonic_time() / 1000;
429 if (now > devc->end_time)
430 dev_acquisition_stop(sdi, devc->cb_data);
433 if (sdi->status == SR_ST_STOPPING) {
434 usb_source_remove(drvc->sr_ctx);
438 packet.type = SR_DF_END;
439 sr_session_send(sdi, &packet);
442 memset(&tv, 0, sizeof(struct timeval));
443 libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv,
449 static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
451 struct drv_context *drvc;
452 struct dev_context *devc;
453 struct sr_usb_dev_inst *usb;
454 struct libusb_transfer *transfer;
459 if (sdi->status != SR_ST_ACTIVE)
460 return SR_ERR_DEV_CLOSED;
463 sr_err("Driver was not initialized.");
469 devc->cb_data = cb_data;
471 devc->num_samples = 0;
472 devc->reply_size = 0;
474 /* Send header packet to the session bus. */
475 std_session_send_df_header(cb_data, LOG_PREFIX);
477 usb_source_add(drvc->sr_ctx, 100, handle_events, (void *)sdi);
479 if (testo_set_serial_params(usb) != SR_OK)
482 devc->out_transfer = libusb_alloc_transfer(0);
483 if (testo_request_packet(sdi) != SR_OK)
486 buf = g_try_malloc(MAX_REPLY_SIZE);
487 transfer = libusb_alloc_transfer(0);
488 libusb_fill_bulk_transfer(transfer, usb->devhdl, EP_IN, buf,
489 MAX_REPLY_SIZE, receive_transfer, (void *)sdi, 100);
490 if ((ret = libusb_submit_transfer(transfer) != 0)) {
491 sr_err("Unable to submit transfer: %s.", libusb_error_name(ret));
492 libusb_free_transfer(transfer);
496 devc->reply_size = 0;
501 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
506 sr_err("Driver was not initialized.");
510 if (sdi->status != SR_ST_ACTIVE)
511 return SR_ERR_DEV_CLOSED;
513 sdi->status = SR_ST_STOPPING;
518 SR_PRIV struct sr_dev_driver testo_driver_info = {
525 .dev_list = dev_list,
526 .dev_clear = dev_clear,
527 .config_get = config_get,
528 .config_set = config_set,
529 .config_list = config_list,
530 .dev_open = dev_open,
531 .dev_close = dev_close,
532 .dev_acquisition_start = dev_acquisition_start,
533 .dev_acquisition_stop = dev_acquisition_stop,