2 * This file is part of the libsigrok project.
4 * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
5 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include <glib/gstdio.h>
34 struct cmd_start_acquisition {
36 uint8_t sample_delay_h;
37 uint8_t sample_delay_l;
42 #define USB_TIMEOUT 100
44 static int command_get_fw_version(libusb_device_handle *devhdl,
45 struct version_info *vi)
49 ret = libusb_control_transfer(devhdl, LIBUSB_REQUEST_TYPE_VENDOR |
50 LIBUSB_ENDPOINT_IN, CMD_GET_FW_VERSION, 0x0000, 0x0000,
51 (unsigned char *)vi, sizeof(struct version_info), USB_TIMEOUT);
54 sr_err("Unable to get version info: %s.",
55 libusb_error_name(ret));
62 static int command_get_revid_version(struct sr_dev_inst *sdi, uint8_t *revid)
64 struct dev_context *devc = sdi->priv;
65 struct sr_usb_dev_inst *usb = sdi->conn;
66 libusb_device_handle *devhdl = usb->devhdl;
69 cmd = devc->dslogic ? DS_CMD_GET_REVID_VERSION : CMD_GET_REVID_VERSION;
70 ret = libusb_control_transfer(devhdl, LIBUSB_REQUEST_TYPE_VENDOR |
71 LIBUSB_ENDPOINT_IN, cmd, 0x0000, 0x0000, revid, 1, USB_TIMEOUT);
74 sr_err("Unable to get REVID: %s.", libusb_error_name(ret));
81 SR_PRIV int fx2lafw_command_start_acquisition(const struct sr_dev_inst *sdi)
83 struct dev_context *devc;
84 struct sr_usb_dev_inst *usb;
86 struct cmd_start_acquisition cmd;
91 samplerate = devc->cur_samplerate;
93 /* Compute the sample rate. */
94 if (devc->sample_wide && samplerate > MAX_16BIT_SAMPLE_RATE) {
95 sr_err("Unable to sample at %" PRIu64 "Hz "
96 "when collecting 16-bit samples.", samplerate);
101 cmd.flags = cmd.sample_delay_h = cmd.sample_delay_l = 0;
102 if ((SR_MHZ(48) % samplerate) == 0) {
103 cmd.flags = CMD_START_FLAGS_CLK_48MHZ;
104 delay = SR_MHZ(48) / samplerate - 1;
105 if (delay > MAX_SAMPLE_DELAY)
109 if (delay == 0 && (SR_MHZ(30) % samplerate) == 0) {
110 cmd.flags = CMD_START_FLAGS_CLK_30MHZ;
111 delay = SR_MHZ(30) / samplerate - 1;
114 sr_dbg("GPIF delay = %d, clocksource = %sMHz.", delay,
115 (cmd.flags & CMD_START_FLAGS_CLK_48MHZ) ? "48" : "30");
117 if (delay <= 0 || delay > MAX_SAMPLE_DELAY) {
118 sr_err("Unable to sample at %" PRIu64 "Hz.", samplerate);
122 cmd.sample_delay_h = (delay >> 8) & 0xff;
123 cmd.sample_delay_l = delay & 0xff;
125 /* Select the sampling width. */
126 cmd.flags |= devc->sample_wide ? CMD_START_FLAGS_SAMPLE_16BIT :
127 CMD_START_FLAGS_SAMPLE_8BIT;
128 /* Enable CTL2 clock. */
129 cmd.flags |= (devc->profile->dev_caps & DEV_CAPS_AX_ANALOG) ? CMD_START_FLAGS_CLK_CTL2 : 0;
131 /* Send the control message. */
132 ret = libusb_control_transfer(usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR |
133 LIBUSB_ENDPOINT_OUT, CMD_START, 0x0000, 0x0000,
134 (unsigned char *)&cmd, sizeof(cmd), USB_TIMEOUT);
136 sr_err("Unable to send start command: %s.",
137 libusb_error_name(ret));
145 * Check the USB configuration to determine if this is an fx2lafw device.
147 * @return TRUE if the device's configuration profile matches fx2lafw
148 * configuration, FALSE otherwise.
150 SR_PRIV gboolean match_manuf_prod(libusb_device *dev, const char *manufacturer,
153 struct libusb_device_descriptor des;
154 struct libusb_device_handle *hdl;
156 unsigned char strdesc[64];
161 /* Assume the FW has not been loaded, unless proven wrong. */
162 libusb_get_device_descriptor(dev, &des);
164 if (libusb_open(dev, &hdl) != 0)
167 if (libusb_get_string_descriptor_ascii(hdl,
168 des.iManufacturer, strdesc, sizeof(strdesc)) < 0)
170 if (strcmp((const char *)strdesc, manufacturer))
173 if (libusb_get_string_descriptor_ascii(hdl,
174 des.iProduct, strdesc, sizeof(strdesc)) < 0)
176 if (strcmp((const char *)strdesc, product))
187 SR_PRIV int fx2lafw_dev_open(struct sr_dev_inst *sdi, struct sr_dev_driver *di)
189 libusb_device **devlist;
190 struct sr_usb_dev_inst *usb;
191 struct libusb_device_descriptor des;
192 struct dev_context *devc;
193 struct drv_context *drvc;
194 struct version_info vi;
195 int ret, i, device_count;
197 char connection_id[64];
203 if (sdi->status == SR_ST_ACTIVE)
204 /* Device is already in use. */
207 device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
208 if (device_count < 0) {
209 sr_err("Failed to get device list: %s.",
210 libusb_error_name(device_count));
214 for (i = 0; i < device_count; i++) {
215 libusb_get_device_descriptor(devlist[i], &des);
217 if (des.idVendor != devc->profile->vid
218 || des.idProduct != devc->profile->pid)
221 if ((sdi->status == SR_ST_INITIALIZING) ||
222 (sdi->status == SR_ST_INACTIVE)) {
224 * Check device by its physical USB bus/port address.
226 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
227 if (strcmp(sdi->connection_id, connection_id))
228 /* This is not the one. */
232 if (!(ret = libusb_open(devlist[i], &usb->devhdl))) {
233 if (usb->address == 0xff)
235 * First time we touch this device after FW
236 * upload, so we don't know the address yet.
238 usb->address = libusb_get_device_address(devlist[i]);
240 sr_err("Failed to open device: %s.",
241 libusb_error_name(ret));
245 if (libusb_has_capability(LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER)) {
246 if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) {
247 if ((ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE)) < 0) {
248 sr_err("Failed to detach kernel driver: %s.",
249 libusb_error_name(ret));
255 ret = command_get_fw_version(usb->devhdl, &vi);
257 sr_err("Failed to get firmware version.");
261 ret = command_get_revid_version(sdi, &revid);
263 sr_err("Failed to get REVID.");
268 * Changes in major version mean incompatible/API changes, so
269 * bail out if we encounter an incompatible version.
270 * Different minor versions are OK, they should be compatible.
272 if (vi.major != FX2LAFW_REQUIRED_VERSION_MAJOR) {
273 sr_err("Expected firmware version %d.x, "
274 "got %d.%d.", FX2LAFW_REQUIRED_VERSION_MAJOR,
279 sdi->status = SR_ST_ACTIVE;
280 sr_info("Opened device on %d.%d (logical) / %s (physical), "
281 "interface %d, firmware %d.%d.",
282 usb->bus, usb->address, connection_id,
283 USB_INTERFACE, vi.major, vi.minor);
285 sr_info("Detected REVID=%d, it's a Cypress CY7C68013%s.",
286 revid, (revid != 1) ? " (FX2)" : "A (FX2LP)");
290 libusb_free_device_list(devlist, 1);
292 if (sdi->status != SR_ST_ACTIVE)
298 SR_PRIV struct dev_context *fx2lafw_dev_new(void)
300 struct dev_context *devc;
302 devc = g_malloc0(sizeof(struct dev_context));
303 devc->profile = NULL;
304 devc->fw_updated = 0;
305 devc->cur_samplerate = 0;
306 devc->limit_samples = 0;
307 devc->capture_ratio = 0;
308 devc->sample_wide = FALSE;
309 devc->trigger_en = FALSE;
315 SR_PRIV void fx2lafw_abort_acquisition(struct dev_context *devc)
319 devc->acq_aborted = TRUE;
321 for (i = devc->num_transfers - 1; i >= 0; i--) {
322 if (devc->transfers[i])
323 libusb_cancel_transfer(devc->transfers[i]);
327 static void finish_acquisition(struct sr_dev_inst *sdi)
329 struct dev_context *devc;
333 std_session_send_df_end(sdi, LOG_PREFIX);
335 usb_source_remove(sdi->session, devc->ctx);
337 devc->num_transfers = 0;
338 g_free(devc->transfers);
340 /* Free the deinterlace buffers if we had them */
341 g_free(devc->logic_buffer);
342 g_free(devc->analog_buffer);
345 soft_trigger_logic_free(devc->stl);
350 static void free_transfer(struct libusb_transfer *transfer)
352 struct sr_dev_inst *sdi;
353 struct dev_context *devc;
356 sdi = transfer->user_data;
359 g_free(transfer->buffer);
360 transfer->buffer = NULL;
361 libusb_free_transfer(transfer);
363 for (i = 0; i < devc->num_transfers; i++) {
364 if (devc->transfers[i] == transfer) {
365 devc->transfers[i] = NULL;
370 devc->submitted_transfers--;
371 if (devc->submitted_transfers == 0)
372 finish_acquisition(sdi);
375 static void resubmit_transfer(struct libusb_transfer *transfer)
379 if ((ret = libusb_submit_transfer(transfer)) == LIBUSB_SUCCESS)
382 sr_err("%s: %s", __func__, libusb_error_name(ret));
383 free_transfer(transfer);
387 SR_PRIV void mso_send_data_proc(struct sr_dev_inst *sdi,
388 uint8_t *data, size_t length, size_t sample_width)
391 struct dev_context *devc;
395 sample_width = sample_width;
399 for (i = 0; i < length; i++) {
400 devc->logic_buffer[i] = data[i * 2];
401 /* Rescale to -10V - +10V from 0-255. */
402 devc->analog_buffer[i] = data[i * 2 + 1] - 128.0f / 12.8f;
405 const struct sr_datafeed_logic logic = {
408 .data = devc->logic_buffer
411 const struct sr_datafeed_packet logic_packet = {
416 sr_session_send(sdi, &logic_packet);
418 const struct sr_datafeed_analog_old analog = {
419 .channels = devc->enabled_analog_channels,
420 .num_samples = length,
422 .unit = SR_UNIT_VOLT,
423 .mqflags = 0 /*SR_MQFLAG_DC*/,
424 .data = devc->analog_buffer
427 const struct sr_datafeed_packet analog_packet = {
428 .type = SR_DF_ANALOG_OLD,
432 sr_session_send(sdi, &analog_packet);
435 SR_PRIV void la_send_data_proc(struct sr_dev_inst *sdi,
436 uint8_t *data, size_t length, size_t sample_width)
438 const struct sr_datafeed_logic logic = {
440 .unitsize = sample_width,
444 const struct sr_datafeed_packet packet = {
449 sr_session_send(sdi, &packet);
452 SR_PRIV void LIBUSB_CALL fx2lafw_receive_transfer(struct libusb_transfer *transfer)
454 struct sr_dev_inst *sdi;
455 struct dev_context *devc;
456 gboolean packet_has_error = FALSE;
457 unsigned int num_samples;
458 int trigger_offset, cur_sample_count, unitsize;
459 int pre_trigger_samples;
461 sdi = transfer->user_data;
465 * If acquisition has already ended, just free any queued up
466 * transfer that come in.
468 if (devc->acq_aborted) {
469 free_transfer(transfer);
473 sr_dbg("receive_transfer(): status %s received %d bytes.",
474 libusb_error_name(transfer->status), transfer->actual_length);
476 /* Save incoming transfer before reusing the transfer struct. */
477 unitsize = devc->sample_wide ? 2 : 1;
478 cur_sample_count = transfer->actual_length / unitsize;
480 switch (transfer->status) {
481 case LIBUSB_TRANSFER_NO_DEVICE:
482 fx2lafw_abort_acquisition(devc);
483 free_transfer(transfer);
485 case LIBUSB_TRANSFER_COMPLETED:
486 case LIBUSB_TRANSFER_TIMED_OUT: /* We may have received some data though. */
489 packet_has_error = TRUE;
493 if (transfer->actual_length == 0 || packet_has_error) {
494 devc->empty_transfer_count++;
495 if (devc->empty_transfer_count > MAX_EMPTY_TRANSFERS) {
497 * The FX2 gave up. End the acquisition, the frontend
498 * will work out that the samplecount is short.
500 fx2lafw_abort_acquisition(devc);
501 free_transfer(transfer);
503 resubmit_transfer(transfer);
507 devc->empty_transfer_count = 0;
509 if (devc->trigger_en)
510 devc->trigger_fired = TRUE;
511 if (devc->trigger_fired) {
512 if (!devc->limit_samples || devc->sent_samples < devc->limit_samples) {
513 /* Send the incoming transfer to the session bus. */
514 if (devc->limit_samples && devc->sent_samples + cur_sample_count > devc->limit_samples)
515 num_samples = devc->limit_samples - devc->sent_samples;
517 num_samples = cur_sample_count;
519 devc->send_data_proc(sdi, (uint8_t *)transfer->buffer,
520 num_samples * unitsize, unitsize);
521 devc->sent_samples += num_samples;
524 trigger_offset = soft_trigger_logic_check(devc->stl,
525 transfer->buffer, transfer->actual_length, &pre_trigger_samples);
526 if (trigger_offset > -1) {
527 devc->sent_samples += pre_trigger_samples;
528 num_samples = cur_sample_count - trigger_offset;
529 if (devc->limit_samples &&
530 num_samples > devc->limit_samples - devc->sent_samples)
531 num_samples = devc->limit_samples - devc->sent_samples;
533 devc->send_data_proc(sdi, (uint8_t *)transfer->buffer
534 + trigger_offset * unitsize,
535 num_samples * unitsize, unitsize);
536 devc->sent_samples += num_samples;
538 devc->trigger_fired = TRUE;
542 if (devc->limit_samples && devc->sent_samples >= devc->limit_samples) {
543 fx2lafw_abort_acquisition(devc);
544 free_transfer(transfer);
546 resubmit_transfer(transfer);
549 static unsigned int to_bytes_per_ms(unsigned int samplerate)
551 return samplerate / 1000;
554 SR_PRIV size_t fx2lafw_get_buffer_size(struct dev_context *devc)
559 * The buffer should be large enough to hold 10ms of data and
562 s = 10 * to_bytes_per_ms(devc->cur_samplerate);
563 return (s + 511) & ~511;
566 SR_PRIV unsigned int fx2lafw_get_number_of_transfers(struct dev_context *devc)
570 /* Total buffer size should be able to hold about 500ms of data. */
571 n = (500 * to_bytes_per_ms(devc->cur_samplerate) /
572 fx2lafw_get_buffer_size(devc));
574 if (n > NUM_SIMUL_TRANSFERS)
575 return NUM_SIMUL_TRANSFERS;
580 SR_PRIV unsigned int fx2lafw_get_timeout(struct dev_context *devc)
583 unsigned int timeout;
585 total_size = fx2lafw_get_buffer_size(devc) *
586 fx2lafw_get_number_of_transfers(devc);
587 timeout = total_size / to_bytes_per_ms(devc->cur_samplerate);
588 return timeout + timeout / 4; /* Leave a headroom of 25% percent. */