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/>.
24 #define SERIALCOMM "115200/8n1"
26 SR_PRIV struct sr_dev_driver testo_driver_info;
27 static int dev_acquisition_stop(struct sr_dev_inst *sdi);
29 static const uint32_t scanopts[] = {
33 static const uint32_t devopts[] = {
36 SR_CONF_LIMIT_SAMPLES | SR_CONF_SET | SR_CONF_GET,
37 SR_CONF_LIMIT_MSEC | SR_CONF_SET | SR_CONF_GET,
40 static const uint8_t TESTO_x35_REQUEST[] = { 0x12, 0, 0, 0, 1, 1, 0x55, 0xd1, 0xb7 };
42 static const struct testo_model models[] = {
43 { "435", 9, TESTO_x35_REQUEST },
46 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
48 return std_init(sr_ctx, di, LOG_PREFIX);
51 static GSList *scan(struct sr_dev_driver *di, 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], connection_id[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 libusb_get_device_descriptor(devlist[i], &des);
97 if ((ret = libusb_open(devlist[i], &hdl)) < 0)
100 manufacturer[0] = product[0] = '\0';
101 if (des.iManufacturer && (ret = libusb_get_string_descriptor_ascii(
102 hdl, des.iManufacturer, (unsigned char *) manufacturer,
103 sizeof(manufacturer))) < 0) {
104 sr_warn("Failed to get manufacturer string descriptor: %s.",
105 libusb_error_name(ret));
107 if (des.iProduct && (ret = libusb_get_string_descriptor_ascii(
108 hdl, des.iProduct, (unsigned char *) product,
109 sizeof(product))) < 0) {
110 sr_warn("Failed to get product string descriptor: %s.",
111 libusb_error_name(ret));
115 if (strncmp(manufacturer, "testo", 5))
118 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
120 /* Hardcode the 435 for now.*/
121 if (strcmp(product, "testo 435/635/735"))
124 sdi = g_malloc0(sizeof(struct sr_dev_inst));
125 sdi->status = SR_ST_INACTIVE;
126 sdi->vendor = g_strdup("Testo");
127 sdi->model = g_strdup("435/635/735");
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 sdi->connection_id = g_strdup(connection_id);
133 devc = g_malloc(sizeof(struct dev_context));
134 devc->model = &models[0];
135 sr_sw_limits_init(&devc->sw_limits);
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 int dev_open(struct sr_dev_inst *sdi)
150 struct sr_dev_driver *di = sdi->driver;
151 struct drv_context *drvc = di->context;
152 struct sr_usb_dev_inst *usb;
153 libusb_device **devlist;
155 char connection_id[64];
158 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
159 for (i = 0; devlist[i]; i++) {
160 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
161 if (strcmp(sdi->connection_id, connection_id))
163 if ((ret = libusb_open(devlist[i], &usb->devhdl))) {
164 sr_err("Failed to open device: %s.", libusb_error_name(ret));
169 libusb_free_device_list(devlist, 1);
171 sr_err("Device not found.");
175 if (libusb_has_capability(LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER)) {
176 if (libusb_kernel_driver_active(usb->devhdl, 0) == 1) {
177 if ((ret = libusb_detach_kernel_driver(usb->devhdl, 0)) < 0) {
178 sr_err("Failed to detach kernel driver: %s.",
179 libusb_error_name(ret));
185 if ((ret = libusb_claim_interface(usb->devhdl, 0))) {
186 sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
189 sdi->status = SR_ST_ACTIVE;
194 static int dev_close(struct sr_dev_inst *sdi)
196 struct sr_usb_dev_inst *usb;
203 libusb_release_interface(usb->devhdl, 0);
204 libusb_close(usb->devhdl);
206 sdi->status = SR_ST_INACTIVE;
211 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
212 const struct sr_channel_group *cg)
214 struct dev_context *devc = sdi->priv;
215 struct sr_usb_dev_inst *usb;
222 if (!sdi || !sdi->conn)
225 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
226 *data = g_variant_new_string(str);
228 case SR_CONF_LIMIT_MSEC:
229 case SR_CONF_LIMIT_SAMPLES:
230 return sr_sw_limits_config_get(&devc->sw_limits, key, data);
238 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
239 const struct sr_channel_group *cg)
241 struct dev_context *devc = sdi->priv;
245 if (sdi->status != SR_ST_ACTIVE)
246 return SR_ERR_DEV_CLOSED;
248 return sr_sw_limits_config_set(&devc->sw_limits, key, data);
251 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
252 const struct sr_channel_group *cg)
258 case SR_CONF_SCAN_OPTIONS:
259 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
260 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
262 case SR_CONF_DEVICE_OPTIONS:
263 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
264 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
273 static void receive_data(struct sr_dev_inst *sdi, unsigned char *data, int len)
275 struct dev_context *devc;
281 if (devc->reply_size + len > MAX_REPLY_SIZE) {
282 /* Something went very wrong. */
283 sr_dbg("Receive buffer overrun.");
284 devc->reply_size = 0;
288 memcpy(devc->reply + devc->reply_size, data, len);
289 devc->reply_size += len;
290 /* Sixth byte contains the length of the packet. */
291 if (devc->reply_size < 7)
294 packet_size = 7 + devc->reply[6] * 7 + 2;
295 if (devc->reply_size < packet_size)
298 if (!testo_check_packet_prefix(devc->reply, devc->reply_size))
301 crc = crc16_mcrf4xx(0xffff, devc->reply, devc->reply_size - 2);
302 if (crc == RL16(&devc->reply[devc->reply_size - 2])) {
303 testo_receive_packet(sdi);
304 sr_sw_limits_update_samples_read(&devc->sw_limits, 1);
306 sr_dbg("Packet has invalid CRC.");
309 devc->reply_size = 0;
310 if (sr_sw_limits_check(&devc->sw_limits))
311 dev_acquisition_stop(sdi);
313 testo_request_packet(sdi);
317 SR_PRIV void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer)
319 struct dev_context *devc;
320 struct sr_dev_inst *sdi;
323 sdi = transfer->user_data;
325 if (transfer == devc->out_transfer)
326 /* Just the command acknowledgement. */
329 if (transfer->status == LIBUSB_TRANSFER_NO_DEVICE) {
330 /* USB device was unplugged. */
331 dev_acquisition_stop(sdi);
332 } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED) {
333 /* First two bytes in any transfer are FTDI status bytes. */
334 if (transfer->actual_length > 2)
335 receive_data(sdi, transfer->buffer + 2, transfer->actual_length - 2);
337 /* Anything else is either an error or a timeout, which is fine:
338 * we were just going to send another transfer request anyway. */
340 if (sdi->status == SR_ST_ACTIVE) {
341 if ((ret = libusb_submit_transfer(transfer) != 0)) {
342 sr_err("Unable to resubmit transfer: %s.",
343 libusb_error_name(ret));
344 g_free(transfer->buffer);
345 libusb_free_transfer(transfer);
346 dev_acquisition_stop(sdi);
349 /* This was the last transfer we're going to receive, so
351 g_free(transfer->buffer);
352 libusb_free_transfer(transfer);
356 static int handle_events(int fd, int revents, void *cb_data)
358 struct sr_dev_driver *di;
359 struct dev_context *devc;
360 struct drv_context *drvc;
361 struct sr_dev_inst *sdi;
372 if (sr_sw_limits_check(&devc->sw_limits))
373 dev_acquisition_stop(sdi);
375 if (sdi->status == SR_ST_STOPPING) {
376 usb_source_remove(sdi->session, drvc->sr_ctx);
378 std_session_send_df_end(sdi, LOG_PREFIX);
381 memset(&tv, 0, sizeof(struct timeval));
382 libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv,
388 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
390 struct sr_dev_driver *di = sdi->driver;
391 struct drv_context *drvc;
392 struct dev_context *devc;
393 struct sr_usb_dev_inst *usb;
394 struct libusb_transfer *transfer;
399 if (sdi->status != SR_ST_ACTIVE)
400 return SR_ERR_DEV_CLOSED;
405 devc->reply_size = 0;
407 std_session_send_df_header(sdi, LOG_PREFIX);
409 usb_source_add(sdi->session, drvc->sr_ctx, 100,
410 handle_events, (void *)sdi);
412 if (testo_set_serial_params(usb) != SR_OK)
415 devc->out_transfer = libusb_alloc_transfer(0);
416 if (testo_request_packet(sdi) != SR_OK)
419 buf = g_malloc(MAX_REPLY_SIZE);
420 transfer = libusb_alloc_transfer(0);
421 libusb_fill_bulk_transfer(transfer, usb->devhdl, EP_IN, buf,
422 MAX_REPLY_SIZE, receive_transfer, (void *)sdi, 100);
423 if ((ret = libusb_submit_transfer(transfer) != 0)) {
424 sr_err("Unable to submit transfer: %s.", libusb_error_name(ret));
425 libusb_free_transfer(transfer);
429 devc->reply_size = 0;
431 sr_sw_limits_acquisition_start(&devc->sw_limits);
436 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
438 if (sdi->status != SR_ST_ACTIVE)
439 return SR_ERR_DEV_CLOSED;
441 sdi->status = SR_ST_STOPPING;
446 SR_PRIV struct sr_dev_driver testo_driver_info = {
451 .cleanup = std_cleanup,
453 .dev_list = std_dev_list,
454 .config_get = config_get,
455 .config_set = config_set,
456 .config_list = config_list,
457 .dev_open = dev_open,
458 .dev_close = dev_close,
459 .dev_acquisition_start = dev_acquisition_start,
460 .dev_acquisition_stop = dev_acquisition_stop,