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"
25 static int dev_acquisition_stop(struct sr_dev_inst *sdi);
27 static const uint32_t scanopts[] = {
31 static const uint32_t devopts[] = {
34 SR_CONF_LIMIT_SAMPLES | SR_CONF_SET | SR_CONF_GET,
35 SR_CONF_LIMIT_MSEC | SR_CONF_SET | SR_CONF_GET,
38 static const uint8_t TESTO_x35_REQUEST[] = { 0x12, 0, 0, 0, 1, 1, 0x55, 0xd1, 0xb7 };
40 static const struct testo_model models[] = {
41 { "435", 9, TESTO_x35_REQUEST },
44 static GSList *scan(struct sr_dev_driver *di, GSList *options)
46 struct drv_context *drvc;
47 struct dev_context *devc;
48 struct sr_config *src;
49 struct sr_dev_inst *sdi;
50 struct sr_usb_dev_inst *usb;
51 struct libusb_device_descriptor des;
52 libusb_device **devlist;
53 struct libusb_device_handle *hdl;
54 GSList *conn_devices, *devices, *l;
57 char manufacturer[64], product[64], connection_id[64];
63 for (l = options; l; l = l->next) {
65 if (src->key != SR_CONF_CONN)
67 str = g_variant_get_string(src->data, NULL);
68 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, str);
71 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
72 for (i = 0; devlist[i]; i++) {
75 for (l = conn_devices; l; l = l->next) {
77 if (usb->bus == libusb_get_bus_number(devlist[i])
78 && usb->address == libusb_get_device_address(devlist[i]))
82 /* This device matched none of the ones that
83 * matched the conn specification. */
87 libusb_get_device_descriptor(devlist[i], &des);
89 if ((ret = libusb_open(devlist[i], &hdl)) < 0)
92 manufacturer[0] = product[0] = '\0';
93 if (des.iManufacturer && (ret = libusb_get_string_descriptor_ascii(
94 hdl, des.iManufacturer, (unsigned char *) manufacturer,
95 sizeof(manufacturer))) < 0) {
96 sr_warn("Failed to get manufacturer string descriptor: %s.",
97 libusb_error_name(ret));
99 if (des.iProduct && (ret = libusb_get_string_descriptor_ascii(
100 hdl, des.iProduct, (unsigned char *) product,
101 sizeof(product))) < 0) {
102 sr_warn("Failed to get product string descriptor: %s.",
103 libusb_error_name(ret));
107 if (strncmp(manufacturer, "testo", 5))
110 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
112 /* Hardcode the 435 for now.*/
113 if (strcmp(product, "testo 435/635/735"))
116 sdi = g_malloc0(sizeof(struct sr_dev_inst));
117 sdi->status = SR_ST_INACTIVE;
118 sdi->vendor = g_strdup("Testo");
119 sdi->model = g_strdup("435/635/735");
121 sdi->inst_type = SR_INST_USB;
122 sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
123 libusb_get_device_address(devlist[i]), NULL);
124 sdi->connection_id = g_strdup(connection_id);
125 devc = g_malloc(sizeof(struct dev_context));
126 devc->model = &models[0];
127 sr_sw_limits_init(&devc->sw_limits);
129 if (testo_probe_channels(sdi) != SR_OK)
131 devices = g_slist_append(devices, sdi);
133 libusb_free_device_list(devlist, 1);
134 g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
136 return std_scan_complete(di, devices);
139 static int dev_open(struct sr_dev_inst *sdi)
141 struct sr_dev_driver *di = sdi->driver;
142 struct drv_context *drvc = di->context;
143 struct sr_usb_dev_inst *usb;
148 ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb);
152 if (libusb_has_capability(LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER)) {
153 if (libusb_kernel_driver_active(usb->devhdl, 0) == 1) {
154 if ((ret = libusb_detach_kernel_driver(usb->devhdl, 0)) < 0) {
155 sr_err("Failed to detach kernel driver: %s.",
156 libusb_error_name(ret));
162 if ((ret = libusb_claim_interface(usb->devhdl, 0))) {
163 sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
166 sdi->status = SR_ST_ACTIVE;
171 static int dev_close(struct sr_dev_inst *sdi)
173 struct sr_usb_dev_inst *usb;
180 libusb_release_interface(usb->devhdl, 0);
181 libusb_close(usb->devhdl);
183 sdi->status = SR_ST_INACTIVE;
188 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
189 const struct sr_channel_group *cg)
191 struct dev_context *devc = sdi->priv;
192 struct sr_usb_dev_inst *usb;
199 if (!sdi || !sdi->conn)
202 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
203 *data = g_variant_new_string(str);
205 case SR_CONF_LIMIT_MSEC:
206 case SR_CONF_LIMIT_SAMPLES:
207 return sr_sw_limits_config_get(&devc->sw_limits, key, data);
215 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
216 const struct sr_channel_group *cg)
218 struct dev_context *devc = sdi->priv;
222 if (sdi->status != SR_ST_ACTIVE)
223 return SR_ERR_DEV_CLOSED;
225 return sr_sw_limits_config_set(&devc->sw_limits, key, data);
228 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
229 const struct sr_channel_group *cg)
235 case SR_CONF_SCAN_OPTIONS:
236 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
237 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
239 case SR_CONF_DEVICE_OPTIONS:
240 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
241 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
250 static void receive_data(struct sr_dev_inst *sdi, unsigned char *data, int len)
252 struct dev_context *devc;
258 if (devc->reply_size + len > MAX_REPLY_SIZE) {
259 /* Something went very wrong. */
260 sr_dbg("Receive buffer overrun.");
261 devc->reply_size = 0;
265 memcpy(devc->reply + devc->reply_size, data, len);
266 devc->reply_size += len;
267 /* Sixth byte contains the length of the packet. */
268 if (devc->reply_size < 7)
271 packet_size = 7 + devc->reply[6] * 7 + 2;
272 if (devc->reply_size < packet_size)
275 if (!testo_check_packet_prefix(devc->reply, devc->reply_size))
278 crc = crc16_mcrf4xx(0xffff, devc->reply, devc->reply_size - 2);
279 if (crc == RL16(&devc->reply[devc->reply_size - 2])) {
280 testo_receive_packet(sdi);
281 sr_sw_limits_update_samples_read(&devc->sw_limits, 1);
283 sr_dbg("Packet has invalid CRC.");
286 devc->reply_size = 0;
287 if (sr_sw_limits_check(&devc->sw_limits))
288 dev_acquisition_stop(sdi);
290 testo_request_packet(sdi);
294 SR_PRIV void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer)
296 struct dev_context *devc;
297 struct sr_dev_inst *sdi;
300 sdi = transfer->user_data;
302 if (transfer == devc->out_transfer)
303 /* Just the command acknowledgement. */
306 if (transfer->status == LIBUSB_TRANSFER_NO_DEVICE) {
307 /* USB device was unplugged. */
308 dev_acquisition_stop(sdi);
309 } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED) {
310 /* First two bytes in any transfer are FTDI status bytes. */
311 if (transfer->actual_length > 2)
312 receive_data(sdi, transfer->buffer + 2, transfer->actual_length - 2);
314 /* Anything else is either an error or a timeout, which is fine:
315 * we were just going to send another transfer request anyway. */
317 if (sdi->status == SR_ST_ACTIVE) {
318 if ((ret = libusb_submit_transfer(transfer) != 0)) {
319 sr_err("Unable to resubmit transfer: %s.",
320 libusb_error_name(ret));
321 g_free(transfer->buffer);
322 libusb_free_transfer(transfer);
323 dev_acquisition_stop(sdi);
326 /* This was the last transfer we're going to receive, so
328 g_free(transfer->buffer);
329 libusb_free_transfer(transfer);
333 static int handle_events(int fd, int revents, void *cb_data)
335 struct sr_dev_driver *di;
336 struct dev_context *devc;
337 struct drv_context *drvc;
338 struct sr_dev_inst *sdi;
349 if (sr_sw_limits_check(&devc->sw_limits))
350 dev_acquisition_stop(sdi);
352 if (sdi->status == SR_ST_STOPPING) {
353 usb_source_remove(sdi->session, drvc->sr_ctx);
355 std_session_send_df_end(sdi);
358 memset(&tv, 0, sizeof(struct timeval));
359 libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv,
365 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
367 struct sr_dev_driver *di = sdi->driver;
368 struct drv_context *drvc;
369 struct dev_context *devc;
370 struct sr_usb_dev_inst *usb;
371 struct libusb_transfer *transfer;
376 if (sdi->status != SR_ST_ACTIVE)
377 return SR_ERR_DEV_CLOSED;
382 devc->reply_size = 0;
384 std_session_send_df_header(sdi);
386 usb_source_add(sdi->session, drvc->sr_ctx, 100,
387 handle_events, (void *)sdi);
389 if (testo_set_serial_params(usb) != SR_OK)
392 devc->out_transfer = libusb_alloc_transfer(0);
393 if (testo_request_packet(sdi) != SR_OK)
396 buf = g_malloc(MAX_REPLY_SIZE);
397 transfer = libusb_alloc_transfer(0);
398 libusb_fill_bulk_transfer(transfer, usb->devhdl, EP_IN, buf,
399 MAX_REPLY_SIZE, receive_transfer, (void *)sdi, 100);
400 if ((ret = libusb_submit_transfer(transfer) != 0)) {
401 sr_err("Unable to submit transfer: %s.", libusb_error_name(ret));
402 libusb_free_transfer(transfer);
406 devc->reply_size = 0;
408 sr_sw_limits_acquisition_start(&devc->sw_limits);
413 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
415 if (sdi->status != SR_ST_ACTIVE)
416 return SR_ERR_DEV_CLOSED;
418 sdi->status = SR_ST_STOPPING;
423 static struct sr_dev_driver testo_driver_info = {
428 .cleanup = std_cleanup,
430 .dev_list = std_dev_list,
431 .config_get = config_get,
432 .config_set = config_set,
433 .config_list = config_list,
434 .dev_open = dev_open,
435 .dev_close = dev_close,
436 .dev_acquisition_start = dev_acquisition_start,
437 .dev_acquisition_stop = dev_acquisition_stop,
440 SR_REGISTER_DEV_DRIVER(testo_driver_info);