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 static const uint32_t scanopts[] = {
30 static const uint32_t drvopts[] = {
34 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 GSList *scan(struct sr_dev_driver *di, GSList *options)
48 struct drv_context *drvc;
49 struct dev_context *devc;
50 struct sr_config *src;
51 struct sr_dev_inst *sdi;
52 struct sr_usb_dev_inst *usb;
53 struct libusb_device_descriptor des;
54 libusb_device **devlist;
55 struct libusb_device_handle *hdl;
56 GSList *conn_devices, *devices, *l;
59 char manufacturer[64], product[64], connection_id[64];
65 for (l = options; l; l = l->next) {
67 if (src->key != SR_CONF_CONN)
69 str = g_variant_get_string(src->data, NULL);
70 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, str);
73 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
74 for (i = 0; devlist[i]; i++) {
77 for (l = conn_devices; l; l = l->next) {
79 if (usb->bus == libusb_get_bus_number(devlist[i])
80 && usb->address == libusb_get_device_address(devlist[i]))
84 /* This device matched none of the ones that
85 * matched the conn specification. */
89 libusb_get_device_descriptor(devlist[i], &des);
91 if ((ret = libusb_open(devlist[i], &hdl)) < 0)
94 manufacturer[0] = product[0] = '\0';
95 if (des.iManufacturer && (ret = libusb_get_string_descriptor_ascii(
96 hdl, des.iManufacturer, (unsigned char *) manufacturer,
97 sizeof(manufacturer))) < 0) {
98 sr_warn("Failed to get manufacturer string descriptor: %s.",
99 libusb_error_name(ret));
101 if (des.iProduct && (ret = libusb_get_string_descriptor_ascii(
102 hdl, des.iProduct, (unsigned char *) product,
103 sizeof(product))) < 0) {
104 sr_warn("Failed to get product string descriptor: %s.",
105 libusb_error_name(ret));
109 if (strncmp(manufacturer, "testo", 5))
112 if (usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)) < 0)
115 /* Hardcode the 435 for now. */
116 if (strcmp(product, "testo 435/635/735"))
119 sdi = g_malloc0(sizeof(struct sr_dev_inst));
120 sdi->status = SR_ST_INACTIVE;
121 sdi->vendor = g_strdup("Testo");
122 sdi->model = g_strdup("435/635/735");
123 sdi->inst_type = SR_INST_USB;
124 sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
125 libusb_get_device_address(devlist[i]), NULL);
126 sdi->connection_id = g_strdup(connection_id);
127 devc = g_malloc(sizeof(struct dev_context));
128 devc->model = &models[0];
129 sr_sw_limits_init(&devc->sw_limits);
131 if (testo_probe_channels(sdi) != SR_OK)
133 devices = g_slist_append(devices, sdi);
135 libusb_free_device_list(devlist, 1);
136 g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
138 return std_scan_complete(di, devices);
141 static int dev_open(struct sr_dev_inst *sdi)
143 struct sr_dev_driver *di = sdi->driver;
144 struct drv_context *drvc = di->context;
145 struct sr_usb_dev_inst *usb;
150 ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb);
154 if (libusb_has_capability(LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER)) {
155 if (libusb_kernel_driver_active(usb->devhdl, 0) == 1) {
156 if ((ret = libusb_detach_kernel_driver(usb->devhdl, 0)) < 0) {
157 sr_err("Failed to detach kernel driver: %s.",
158 libusb_error_name(ret));
164 if ((ret = libusb_claim_interface(usb->devhdl, 0))) {
165 sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
172 static int dev_close(struct sr_dev_inst *sdi)
174 struct sr_usb_dev_inst *usb;
181 libusb_release_interface(usb->devhdl, 0);
182 libusb_close(usb->devhdl);
188 static int config_get(uint32_t key, GVariant **data,
189 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
191 struct dev_context *devc = sdi->priv;
192 struct sr_usb_dev_inst *usb;
198 if (!sdi || !sdi->conn)
201 *data = g_variant_new_printf("%d.%d", usb->bus, usb->address);
203 case SR_CONF_LIMIT_MSEC:
204 case SR_CONF_LIMIT_SAMPLES:
205 return sr_sw_limits_config_get(&devc->sw_limits, key, data);
213 static int config_set(uint32_t key, GVariant *data,
214 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
216 struct dev_context *devc = sdi->priv;
220 return sr_sw_limits_config_set(&devc->sw_limits, key, data);
223 static int config_list(uint32_t key, GVariant **data,
224 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
226 return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
229 static void receive_data(struct sr_dev_inst *sdi, unsigned char *data, int len)
231 struct dev_context *devc;
237 if (devc->reply_size + len > MAX_REPLY_SIZE) {
238 /* Something went very wrong. */
239 sr_dbg("Receive buffer overrun.");
240 devc->reply_size = 0;
244 memcpy(devc->reply + devc->reply_size, data, len);
245 devc->reply_size += len;
246 /* Sixth byte contains the length of the packet. */
247 if (devc->reply_size < 7)
250 packet_size = 7 + devc->reply[6] * 7 + 2;
251 if (devc->reply_size < packet_size)
254 if (!testo_check_packet_prefix(devc->reply, devc->reply_size))
257 crc = crc16_mcrf4xx(0xffff, devc->reply, devc->reply_size - 2);
258 if (crc == RL16(&devc->reply[devc->reply_size - 2])) {
259 testo_receive_packet(sdi);
260 sr_sw_limits_update_samples_read(&devc->sw_limits, 1);
262 sr_dbg("Packet has invalid CRC.");
265 devc->reply_size = 0;
266 if (sr_sw_limits_check(&devc->sw_limits))
267 sr_dev_acquisition_stop(sdi);
269 testo_request_packet(sdi);
273 SR_PRIV void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer)
275 struct dev_context *devc;
276 struct sr_dev_inst *sdi;
279 sdi = transfer->user_data;
281 if (transfer == devc->out_transfer)
282 /* Just the command acknowledgement. */
285 if (transfer->status == LIBUSB_TRANSFER_NO_DEVICE) {
286 /* USB device was unplugged. */
287 sr_dev_acquisition_stop(sdi);
288 } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED) {
289 /* First two bytes in any transfer are FTDI status bytes. */
290 if (transfer->actual_length > 2)
291 receive_data(sdi, transfer->buffer + 2, transfer->actual_length - 2);
293 /* Anything else is either an error or a timeout, which is fine:
294 * we were just going to send another transfer request anyway. */
296 if (sdi->status == SR_ST_ACTIVE) {
297 if ((ret = libusb_submit_transfer(transfer) != 0)) {
298 sr_err("Unable to resubmit transfer: %s.",
299 libusb_error_name(ret));
300 g_free(transfer->buffer);
301 libusb_free_transfer(transfer);
302 sr_dev_acquisition_stop(sdi);
305 /* This was the last transfer we're going to receive, so
307 g_free(transfer->buffer);
308 libusb_free_transfer(transfer);
312 static int handle_events(int fd, int revents, void *cb_data)
314 struct sr_dev_driver *di;
315 struct dev_context *devc;
316 struct drv_context *drvc;
317 struct sr_dev_inst *sdi;
328 if (sr_sw_limits_check(&devc->sw_limits))
329 sr_dev_acquisition_stop(sdi);
331 if (sdi->status == SR_ST_STOPPING) {
332 usb_source_remove(sdi->session, drvc->sr_ctx);
334 std_session_send_df_end(sdi);
337 memset(&tv, 0, sizeof(struct timeval));
338 libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv,
344 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
346 struct sr_dev_driver *di = sdi->driver;
347 struct drv_context *drvc;
348 struct dev_context *devc;
349 struct sr_usb_dev_inst *usb;
350 struct libusb_transfer *transfer;
357 devc->reply_size = 0;
359 std_session_send_df_header(sdi);
361 usb_source_add(sdi->session, drvc->sr_ctx, 100,
362 handle_events, (void *)sdi);
364 if (testo_set_serial_params(usb) != SR_OK)
367 devc->out_transfer = libusb_alloc_transfer(0);
368 if (testo_request_packet(sdi) != SR_OK)
371 buf = g_malloc(MAX_REPLY_SIZE);
372 transfer = libusb_alloc_transfer(0);
373 libusb_fill_bulk_transfer(transfer, usb->devhdl, EP_IN, buf,
374 MAX_REPLY_SIZE, receive_transfer, (void *)sdi, 100);
375 if ((ret = libusb_submit_transfer(transfer) != 0)) {
376 sr_err("Unable to submit transfer: %s.", libusb_error_name(ret));
377 libusb_free_transfer(transfer);
381 devc->reply_size = 0;
383 sr_sw_limits_acquisition_start(&devc->sw_limits);
388 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
390 sdi->status = SR_ST_STOPPING;
395 static struct sr_dev_driver testo_driver_info = {
400 .cleanup = std_cleanup,
402 .dev_list = std_dev_list,
403 .dev_clear = std_dev_clear,
404 .config_get = config_get,
405 .config_set = config_set,
406 .config_list = config_list,
407 .dev_open = dev_open,
408 .dev_close = dev_close,
409 .dev_acquisition_start = dev_acquisition_start,
410 .dev_acquisition_stop = dev_acquisition_stop,
413 SR_REGISTER_DEV_DRIVER(testo_driver_info);