+++ /dev/null
-/*
- * This file is part of the sigrok project.
- *
- * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/time.h>
-#include <inttypes.h>
-#include <glib.h>
-#include <libusb.h>
-#include "config.h"
-#include "sigrok.h"
-#include "sigrok-internal.h"
-#include "saleae-logic.h"
-
-static struct fx2_profile supported_fx2[] = {
- /* Saleae Logic */
- { 0x0925, 0x3881, 0x0925, 0x3881, "Saleae", "Logic", NULL, 8 },
- /* default Cypress FX2 without EEPROM */
- { 0x04b4, 0x8613, 0x0925, 0x3881, "Cypress", "FX2", NULL, 16 },
- { 0, 0, 0, 0, 0, 0, 0, 0 }
-};
-
-static int hwcaps[] = {
- SR_HWCAP_LOGIC_ANALYZER,
- SR_HWCAP_SAMPLERATE,
-
- /* These are really implemented in the driver, not the hardware. */
- SR_HWCAP_LIMIT_SAMPLES,
- SR_HWCAP_CONTINUOUS,
- 0,
-};
-
-/*
- * Probes are numbered 1-8.
- *
- * TODO: FX2 eval boards with the standard Cypress VID/PID can have 16 pins
- * or probes in theory, which is not supported by the Saleae Logic firmware.
- */
-static const char *probe_names[] = {
- "0",
- "1",
- "2",
- "3",
- "4",
- "5",
- "6",
- "7",
- "8",
- "9",
- "10",
- "11",
- "12",
- "13",
- "14",
- "15",
- NULL,
-};
-
-static uint64_t supported_samplerates[] = {
- SR_KHZ(200),
- SR_KHZ(250),
- SR_KHZ(500),
- SR_MHZ(1),
- SR_MHZ(2),
- SR_MHZ(4),
- SR_MHZ(8),
- SR_MHZ(12),
- SR_MHZ(16),
- SR_MHZ(24),
- 0,
-};
-
-static struct sr_samplerates samplerates = {
- 0,
- 0,
- 0,
- supported_samplerates,
-};
-
-/* List of struct sr_dev_inst, maintained by dev_open()/dev_close(). */
-static GSList *dev_insts = NULL;
-static libusb_context *usb_context = NULL;
-
-static int new_saleae_logic_firmware = 0;
-
-static int hw_dev_config_set(int dev_index, int hwcap, void *value);
-static int hw_dev_acquisition_stop(int dev_index, void *cb_data);
-
-/**
- * Check the USB configuration to determine if this is a Saleae Logic.
- *
- * @return 1 if the device's configuration profile match the Logic firmware's
- * configuration, 0 otherwise.
- */
-static int check_conf_profile(libusb_device *dev)
-{
- struct libusb_device_descriptor des;
- struct libusb_config_descriptor *conf_dsc = NULL;
- const struct libusb_interface_descriptor *intf_dsc;
- int ret = -1;
-
- while (ret == -1) {
- /* Assume it's not a Saleae Logic unless proven wrong. */
- ret = 0;
-
- if (libusb_get_device_descriptor(dev, &des) != 0)
- break;
-
- if (des.bNumConfigurations != 1)
- /* Need exactly 1 configuration. */
- break;
-
- if (libusb_get_config_descriptor(dev, 0, &conf_dsc) != 0)
- break;
-
- if (conf_dsc->bNumInterfaces != 1)
- /* Need exactly 1 interface. */
- break;
-
- if (conf_dsc->interface[0].num_altsetting != 1)
- /* Need just one alternate setting. */
- break;
-
- intf_dsc = &(conf_dsc->interface[0].altsetting[0]);
- if (intf_dsc->bNumEndpoints == 4) {
- /* The new Saleae Logic firmware has 4 endpoints. */
- new_saleae_logic_firmware = 1;
- } else if (intf_dsc->bNumEndpoints == 2) {
- /* The old Saleae Logic firmware has 2 endpoints. */
- new_saleae_logic_firmware = 0;
- } else {
- /* Other number of endpoints -> not a Saleae Logic. */
- break;
- }
-
- if ((intf_dsc->endpoint[0].bEndpointAddress & 0x8f) !=
- (1 | LIBUSB_ENDPOINT_OUT))
- /* The first endpoint should be 1 (outbound). */
- break;
-
- if ((intf_dsc->endpoint[1].bEndpointAddress & 0x8f) !=
- (2 | LIBUSB_ENDPOINT_IN))
- /* The second endpoint should be 2 (inbound). */
- break;
-
- /* TODO: The new firmware has 4 endpoints... */
-
- /* If we made it here, it must be a Saleae Logic. */
- ret = 1;
- }
-
- if (conf_dsc)
- libusb_free_config_descriptor(conf_dsc);
-
- return ret;
-}
-
-static int sl_open_dev(int dev_index)
-{
- libusb_device **devlist;
- struct libusb_device_descriptor des;
- struct sr_dev_inst *sdi;
- struct context *ctx;
- int ret, skip, i;
-
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
- return SR_ERR;
- ctx = sdi->priv;
-
- if (sdi->status == SR_ST_ACTIVE)
- /* already in use */
- return SR_ERR;
-
- skip = 0;
- libusb_get_device_list(usb_context, &devlist);
- for (i = 0; devlist[i]; i++) {
- if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
- sr_err("logic: failed to get device descriptor: %d", ret);
- continue;
- }
-
- if (des.idVendor != ctx->profile->fw_vid
- || des.idProduct != ctx->profile->fw_pid)
- continue;
-
- if (sdi->status == SR_ST_INITIALIZING) {
- if (skip != dev_index) {
- /* Skip devices of this type that aren't the one we want. */
- skip += 1;
- continue;
- }
- } else if (sdi->status == SR_ST_INACTIVE) {
- /*
- * This device is fully enumerated, so we need to find
- * this device by vendor, product, bus and address.
- */
- if (libusb_get_bus_number(devlist[i]) != ctx->usb->bus
- || libusb_get_device_address(devlist[i]) != ctx->usb->address)
- /* this is not the one */
- continue;
- }
-
- if (!(ret = libusb_open(devlist[i], &ctx->usb->devhdl))) {
- if (ctx->usb->address == 0xff)
- /*
- * first time we touch this device after firmware upload,
- * so we don't know the address yet.
- */
- ctx->usb->address = libusb_get_device_address(devlist[i]);
-
- sdi->status = SR_ST_ACTIVE;
- sr_info("logic: opened device %d on %d.%d interface %d",
- sdi->index, ctx->usb->bus,
- ctx->usb->address, USB_INTERFACE);
- } else {
- sr_err("logic: failed to open device: %d", ret);
- }
-
- /* if we made it here, we handled the device one way or another */
- break;
- }
- libusb_free_device_list(devlist, 1);
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR;
-
- return SR_OK;
-}
-
-static void close_dev(struct sr_dev_inst *sdi)
-{
- struct context *ctx;
-
- ctx = sdi->priv;
-
- if (ctx->usb->devhdl == NULL)
- return;
-
- sr_info("logic: closing device %d on %d.%d interface %d", sdi->index,
- ctx->usb->bus, ctx->usb->address, USB_INTERFACE);
- libusb_release_interface(ctx->usb->devhdl, USB_INTERFACE);
- libusb_close(ctx->usb->devhdl);
- ctx->usb->devhdl = NULL;
- sdi->status = SR_ST_INACTIVE;
-}
-
-static int configure_probes(struct context *ctx, GSList *probes)
-{
- struct sr_probe *probe;
- GSList *l;
- int probe_bit, stage, i;
- char *tc;
-
- ctx->probe_mask = 0;
- for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
- ctx->trigger_mask[i] = 0;
- ctx->trigger_value[i] = 0;
- }
-
- stage = -1;
- for (l = probes; l; l = l->next) {
- probe = (struct sr_probe *)l->data;
- if (probe->enabled == FALSE)
- continue;
- probe_bit = 1 << (probe->index - 1);
- ctx->probe_mask |= probe_bit;
- if (!(probe->trigger))
- continue;
-
- stage = 0;
- for (tc = probe->trigger; *tc; tc++) {
- ctx->trigger_mask[stage] |= probe_bit;
- if (*tc == '1')
- ctx->trigger_value[stage] |= probe_bit;
- stage++;
- if (stage > NUM_TRIGGER_STAGES)
- return SR_ERR;
- }
- }
-
- if (stage == -1)
- /*
- * We didn't configure any triggers, make sure acquisition
- * doesn't wait for any.
- */
- ctx->trigger_stage = TRIGGER_FIRED;
- else
- ctx->trigger_stage = 0;
-
- return SR_OK;
-}
-
-static struct context *fx2_dev_new(void)
-{
- struct context *ctx;
-
- if (!(ctx = g_try_malloc0(sizeof(struct context)))) {
- sr_err("logic: %s: ctx malloc failed", __func__);
- return NULL;
- }
- ctx->trigger_stage = TRIGGER_FIRED;
- ctx->usb = NULL;
-
- return ctx;
-}
-
-
-/*
- * API callbacks
- */
-
-static int hw_init(const char *devinfo)
-{
- struct sr_dev_inst *sdi;
- struct libusb_device_descriptor des;
- struct fx2_profile *fx2_prof;
- struct context *ctx;
- libusb_device **devlist;
- int ret, devcnt, i, j;
-
- /* Avoid compiler warnings. */
- (void)devinfo;
-
- if (libusb_init(&usb_context) != 0) {
- sr_err("logic: Failed to initialize USB.");
- return 0;
- }
-
- /* Find all Saleae Logic devices and upload firmware to all of them. */
- devcnt = 0;
- libusb_get_device_list(usb_context, &devlist);
- for (i = 0; devlist[i]; i++) {
- fx2_prof = NULL;
- ret = libusb_get_device_descriptor(devlist[i], &des);
- if (ret != 0) {
- sr_err("logic: failed to get device descriptor: %d",
- ret);
- continue;
- }
-
- for (j = 0; supported_fx2[j].orig_vid; j++) {
- if (des.idVendor == supported_fx2[j].orig_vid
- && des.idProduct == supported_fx2[j].orig_pid) {
- fx2_prof = &supported_fx2[j];
- break;
- }
- }
- if (!fx2_prof)
- /* not a supported VID/PID */
- continue;
-
- sdi = sr_dev_inst_new(devcnt, SR_ST_INITIALIZING,
- fx2_prof->vendor, fx2_prof->model, fx2_prof->model_version);
- if (!sdi)
- return 0;
- ctx = fx2_dev_new();
- ctx->profile = fx2_prof;
- sdi->priv = ctx;
- dev_insts = g_slist_append(dev_insts, sdi);
-
- if (check_conf_profile(devlist[i])) {
- /* Already has the firmware, so fix the new address. */
- sr_dbg("logic: Found a Saleae Logic with %s firmware.",
- new_saleae_logic_firmware ? "new" : "old");
- sdi->status = SR_ST_INACTIVE;
- ctx->usb = sr_usb_dev_inst_new
- (libusb_get_bus_number(devlist[i]),
- libusb_get_device_address(devlist[i]), NULL);
- } else {
- if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION, FIRMWARE) == SR_OK)
- /* Remember when the firmware on this device was updated */
- g_get_current_time(&ctx->fw_updated);
- else
- sr_err("logic: firmware upload failed for "
- "device %d", devcnt);
- ctx->usb = sr_usb_dev_inst_new
- (libusb_get_bus_number(devlist[i]), 0xff, NULL);
- }
- devcnt++;
- }
- libusb_free_device_list(devlist, 1);
-
- return devcnt;
-}
-
-static int hw_dev_open(int dev_index)
-{
- GTimeVal cur_time;
- struct sr_dev_inst *sdi;
- struct context *ctx;
- int timediff, ret;
-
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
- return SR_ERR;
- ctx = sdi->priv;
-
- /*
- * if the firmware was recently uploaded, wait up to MAX_RENUM_DELAY ms
- * for the FX2 to renumerate
- */
- ret = 0;
- if (GTV_TO_MSEC(ctx->fw_updated) > 0) {
- sr_info("logic: waiting for device to reset");
- /* takes at least 300ms for the FX2 to be gone from the USB bus */
- g_usleep(300 * 1000);
- timediff = 0;
- while (timediff < MAX_RENUM_DELAY) {
- if ((ret = sl_open_dev(dev_index)) == SR_OK)
- break;
- g_usleep(100 * 1000);
- g_get_current_time(&cur_time);
- timediff = GTV_TO_MSEC(cur_time) - GTV_TO_MSEC(ctx->fw_updated);
- }
- sr_info("logic: device came back after %d ms", timediff);
- } else {
- ret = sl_open_dev(dev_index);
- }
-
- if (ret != SR_OK) {
- sr_err("logic: unable to open device");
- return SR_ERR;
- }
- ctx = sdi->priv;
-
- ret = libusb_claim_interface(ctx->usb->devhdl, USB_INTERFACE);
- if (ret != 0) {
- sr_err("logic: Unable to claim interface: %d", ret);
- return SR_ERR;
- }
-
- if (ctx->cur_samplerate == 0) {
- /* Samplerate hasn't been set; default to the slowest one. */
- if (hw_dev_config_set(dev_index, SR_HWCAP_SAMPLERATE,
- &supported_samplerates[0]) == SR_ERR)
- return SR_ERR;
- }
-
- return SR_OK;
-}
-
-static int hw_dev_close(int dev_index)
-{
- struct sr_dev_inst *sdi;
-
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) {
- sr_err("logic: %s: sdi was NULL", __func__);
- return SR_ERR_BUG;
- }
-
- /* TODO */
- close_dev(sdi);
-
- return SR_OK;
-}
-
-static int hw_cleanup(void)
-{
- GSList *l;
- struct sr_dev_inst *sdi;
- struct context *ctx;
- int ret = SR_OK;
-
- /* Properly close and free all devices. */
- for (l = dev_insts; l; l = l->next) {
- if (!(sdi = l->data)) {
- /* Log error, but continue cleaning up the rest. */
- sr_err("logic: %s: sdi was NULL, continuing", __func__);
- ret = SR_ERR_BUG;
- continue;
- }
- if (!(ctx = sdi->priv)) {
- /* Log error, but continue cleaning up the rest. */
- sr_err("logic: %s: sdi->priv was NULL, continuing",
- __func__);
- ret = SR_ERR_BUG;
- continue;
- }
- close_dev(sdi);
- sr_usb_dev_inst_free(ctx->usb);
- sr_dev_inst_free(sdi);
- }
-
- g_slist_free(dev_insts);
- dev_insts = NULL;
-
- if (usb_context)
- libusb_exit(usb_context);
- usb_context = NULL;
-
- return ret;
-}
-
-static void *hw_dev_info_get(int dev_index, int dev_info_id)
-{
- struct sr_dev_inst *sdi;
- struct context *ctx;
- void *info = NULL;
-
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
- return NULL;
- ctx = sdi->priv;
-
- switch (dev_info_id) {
- case SR_DI_INST:
- info = sdi;
- break;
- case SR_DI_NUM_PROBES:
- info = GINT_TO_POINTER(ctx->profile->num_probes);
- break;
- case SR_DI_PROBE_NAMES:
- info = probe_names;
- break;
- case SR_DI_SAMPLERATES:
- info = &samplerates;
- break;
- case SR_DI_TRIGGER_TYPES:
- info = TRIGGER_TYPES;
- break;
- case SR_DI_CUR_SAMPLERATE:
- info = &ctx->cur_samplerate;
- break;
- }
-
- return info;
-}
-
-static int hw_dev_status_get(int dev_index)
-{
- struct sr_dev_inst *sdi;
-
- sdi = sr_dev_inst_get(dev_insts, dev_index);
- if (sdi)
- return sdi->status;
- else
- return SR_ST_NOT_FOUND;
-}
-
-static int *hw_hwcap_get_all(void)
-{
- return hwcaps;
-}
-
-static uint8_t new_firmware_divider_value(uint64_t samplerate)
-{
- switch (samplerate) {
- case SR_MHZ(24):
- return 0xe0;
- break;
- case SR_MHZ(16):
- return 0xd5;
- break;
- case SR_MHZ(12):
- return 0xe2;
- break;
- case SR_MHZ(8):
- return 0xd4;
- break;
- case SR_MHZ(4):
- return 0xda;
- break;
- case SR_MHZ(2):
- return 0xe6;
- break;
- case SR_MHZ(1):
- return 0x8e;
- break;
- case SR_KHZ(500):
- return 0xfe;
- break;
- case SR_KHZ(250):
- return 0x9e;
- break;
- case SR_KHZ(200):
- return 0x4e;
- break;
- }
-
- /* Shouldn't happen. */
- sr_err("logic: %s: Invalid samplerate %" PRIu64 "",
- __func__, samplerate);
- return 0;
-}
-
-static int set_samplerate(struct sr_dev_inst *sdi, uint64_t samplerate)
-{
- struct context *ctx;
- uint8_t divider;
- int ret, result, i;
- unsigned char buf[2];
-
- ctx = sdi->priv;
- for (i = 0; supported_samplerates[i]; i++) {
- if (supported_samplerates[i] == samplerate)
- break;
- }
- if (supported_samplerates[i] == 0)
- return SR_ERR_SAMPLERATE;
-
- if (new_saleae_logic_firmware)
- divider = new_firmware_divider_value(samplerate);
- else
- divider = (uint8_t) (48 / (samplerate / 1000000.0)) - 1;
-
- sr_info("logic: setting samplerate to %" PRIu64 " Hz (divider %d)",
- samplerate, divider);
-
- buf[0] = (new_saleae_logic_firmware) ? 0xd5 : 0x01;
- buf[1] = divider;
- ret = libusb_bulk_transfer(ctx->usb->devhdl, 1 | LIBUSB_ENDPOINT_OUT,
- buf, 2, &result, 500);
- if (ret != 0) {
- sr_err("logic: failed to set samplerate: %d", ret);
- return SR_ERR;
- }
- ctx->cur_samplerate = samplerate;
-
- return SR_OK;
-}
-
-static int hw_dev_config_set(int dev_index, int hwcap, void *value)
-{
- struct sr_dev_inst *sdi;
- struct context *ctx;
- int ret;
-
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
- return SR_ERR;
- ctx = sdi->priv;
-
- if (hwcap == SR_HWCAP_SAMPLERATE) {
- ret = set_samplerate(sdi, *(uint64_t *)value);
- } else if (hwcap == SR_HWCAP_PROBECONFIG) {
- ret = configure_probes(ctx, (GSList *) value);
- } else if (hwcap == SR_HWCAP_LIMIT_SAMPLES) {
- ctx->limit_samples = *(uint64_t *)value;
- ret = SR_OK;
- } else {
- ret = SR_ERR;
- }
-
- return ret;
-}
-
-static int receive_data(int fd, int revents, void *cb_data)
-{
- struct timeval tv;
-
- /* Avoid compiler warnings. */
- (void)fd;
- (void)revents;
- (void)cb_data;
-
- tv.tv_sec = tv.tv_usec = 0;
- libusb_handle_events_timeout(usb_context, &tv);
-
- return TRUE;
-}
-
-static void abort_acquisition(struct context *ctx)
-{
- ctx->num_samples = -1;
-}
-
-static void finish_acquisition(struct context *ctx)
-{
- struct sr_datafeed_packet packet;
- int i;
-
- /* Terminate session */
- packet.type = SR_DF_END;
- sr_session_send(ctx->session_dev_id, &packet);
-
- /* Remove fds from polling */
- const struct libusb_pollfd **const lupfd =
- libusb_get_pollfds(usb_context);
- for (i = 0; lupfd[i]; i++)
- sr_source_remove(lupfd[i]->fd);
- free(lupfd); /* NOT g_free()! */
-}
-
-static void receive_transfer(struct libusb_transfer *transfer)
-{
- /* TODO: These statics have to move to the ctx struct. */
- static int empty_transfer_count = 0;
- struct sr_datafeed_packet packet;
- struct sr_datafeed_logic logic;
- struct context *ctx = transfer->user_data;
- int cur_buflen, trigger_offset, i;
- unsigned char *cur_buf, *new_buf;
-
- /*
- * If acquisition has already ended, just free any queued up
- * transfer that come in.
- */
- if (ctx->num_samples == -1) {
- if (transfer)
- libusb_free_transfer(transfer);
-
- ctx->submitted_transfers--;
- if (ctx->submitted_transfers == 0)
- finish_acquisition(ctx);
-
- return;
- }
-
- sr_info("logic: receive_transfer(): status %d received %d bytes",
- transfer->status, transfer->actual_length);
-
- /* Save incoming transfer before reusing the transfer struct. */
- cur_buf = transfer->buffer;
- cur_buflen = transfer->actual_length;
- ctx = transfer->user_data;
-
- /* Fire off a new request. */
- if (!(new_buf = g_try_malloc(4096))) {
- sr_err("logic: %s: new_buf malloc failed", __func__);
- return; /* TODO: SR_ERR_MALLOC */
- }
-
- transfer->buffer = new_buf;
- transfer->length = 4096;
- if (libusb_submit_transfer(transfer) != 0) {
- /* TODO: Stop session? */
- /* TODO: Better error message. */
- sr_err("logic: %s: libusb_submit_transfer error", __func__);
- }
-
- if (cur_buflen == 0) {
- empty_transfer_count++;
- if (empty_transfer_count > MAX_EMPTY_TRANSFERS) {
- /*
- * The FX2 gave up. End the acquisition, the frontend
- * will work out that the samplecount is short.
- */
- abort_acquisition(ctx);
- }
- return;
- } else {
- empty_transfer_count = 0;
- }
-
- trigger_offset = 0;
- if (ctx->trigger_stage >= 0) {
- for (i = 0; i < cur_buflen; i++) {
-
- if ((cur_buf[i] & ctx->trigger_mask[ctx->trigger_stage]) == ctx->trigger_value[ctx->trigger_stage]) {
- /* Match on this trigger stage. */
- ctx->trigger_buffer[ctx->trigger_stage] = cur_buf[i];
- ctx->trigger_stage++;
-
- if (ctx->trigger_stage == NUM_TRIGGER_STAGES || ctx->trigger_mask[ctx->trigger_stage] == 0) {
- /* Match on all trigger stages, we're done. */
- trigger_offset = i + 1;
-
- /*
- * TODO: Send pre-trigger buffer to session bus.
- * Tell the frontend we hit the trigger here.
- */
- packet.type = SR_DF_TRIGGER;
- packet.payload = NULL;
- sr_session_send(ctx->session_dev_id, &packet);
-
- /*
- * Send the samples that triggered it, since we're
- * skipping past them.
- */
- packet.type = SR_DF_LOGIC;
- packet.payload = &logic;
- logic.length = ctx->trigger_stage;
- logic.unitsize = 1;
- logic.data = ctx->trigger_buffer;
- sr_session_send(ctx->session_dev_id, &packet);
-
- ctx->trigger_stage = TRIGGER_FIRED;
- break;
- }
- return;
- }
-
- /*
- * We had a match before, but not in the next sample. However, we may
- * have a match on this stage in the next bit -- trigger on 0001 will
- * fail on seeing 00001, so we need to go back to stage 0 -- but at
- * the next sample from the one that matched originally, which the
- * counter increment at the end of the loop takes care of.
- */
- if (ctx->trigger_stage > 0) {
- i -= ctx->trigger_stage;
- if (i < -1)
- i = -1; /* Oops, went back past this buffer. */
- /* Reset trigger stage. */
- ctx->trigger_stage = 0;
- }
- }
- }
-
- if (ctx->trigger_stage == TRIGGER_FIRED) {
- /* Send the incoming transfer to the session bus. */
- packet.type = SR_DF_LOGIC;
- packet.payload = &logic;
- logic.length = cur_buflen - trigger_offset;
- logic.unitsize = 1;
- logic.data = cur_buf + trigger_offset;
- sr_session_send(ctx->session_dev_id, &packet);
- g_free(cur_buf);
-
- ctx->num_samples += cur_buflen;
- if (ctx->limit_samples && (unsigned int)ctx->num_samples > ctx->limit_samples) {
- abort_acquisition(ctx);
- }
- } else {
- /*
- * TODO: Buffer pre-trigger data in capture
- * ratio-sized buffer.
- */
- }
-}
-
-static int hw_dev_acquisition_start(int dev_index, void *cb_data)
-{
- struct sr_dev_inst *sdi;
- struct sr_datafeed_packet *packet;
- struct sr_datafeed_header *header;
- struct context *ctx;
- struct libusb_transfer *transfer;
- const struct libusb_pollfd **lupfd;
- int size, i;
- unsigned char *buf;
-
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
- return SR_ERR;
- ctx = sdi->priv;
- ctx->session_dev_id = cb_data;
- ctx->num_samples = 0;
-
- if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) {
- sr_err("logic: %s: packet malloc failed", __func__);
- return SR_ERR_MALLOC;
- }
-
- if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) {
- sr_err("logic: %s: header malloc failed", __func__);
- return SR_ERR_MALLOC;
- }
-
- /* Start with 2K transfer, subsequently increased to 4K. */
- size = 2048;
- for (i = 0; i < NUM_SIMUL_TRANSFERS; i++) {
- if (!(buf = g_try_malloc(size))) {
- sr_err("logic: %s: buf malloc failed", __func__);
- return SR_ERR_MALLOC;
- }
- transfer = libusb_alloc_transfer(0);
- libusb_fill_bulk_transfer(transfer, ctx->usb->devhdl,
- 2 | LIBUSB_ENDPOINT_IN, buf, size,
- receive_transfer, ctx, 40);
- if (libusb_submit_transfer(transfer) != 0) {
- /* TODO: Free them all. */
- libusb_free_transfer(transfer);
- g_free(buf);
- return SR_ERR;
- }
-
- ctx->submitted_transfers++;
- size = 4096;
- }
-
- lupfd = libusb_get_pollfds(usb_context);
- for (i = 0; lupfd[i]; i++)
- sr_source_add(lupfd[i]->fd, lupfd[i]->events, 40, receive_data,
- NULL);
- free(lupfd); /* NOT g_free()! */
-
- packet->type = SR_DF_HEADER;
- packet->payload = header;
- header->feed_version = 1;
- gettimeofday(&header->starttime, NULL);
- header->samplerate = ctx->cur_samplerate;
- header->num_logic_probes = ctx->profile->num_probes;
- sr_session_send(ctx->session_dev_id, packet);
- g_free(header);
- g_free(packet);
-
- return SR_OK;
-}
-
-/* TODO: This stops acquisition on ALL devices, ignoring dev_index. */
-static int hw_dev_acquisition_stop(int dev_index, void *cb_data)
-{
- struct sr_dev_inst *sdi;
-
- /* unused parameter */
- (void)cb_data;
-
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
- return SR_ERR;
-
- abort_acquisition(sdi->priv);
-
- return SR_OK;
-}
-
-SR_PRIV struct sr_dev_driver saleae_logic_driver_info = {
- .name = "saleae-logic",
- .longname = "Saleae Logic",
- .api_version = 1,
- .init = hw_init,
- .cleanup = hw_cleanup,
- .dev_open = hw_dev_open,
- .dev_close = hw_dev_close,
- .dev_info_get = hw_dev_info_get,
- .dev_status_get = hw_dev_status_get,
- .hwcap_get_all = hw_hwcap_get_all,
- .dev_config_set = hw_dev_config_set,
- .dev_acquisition_start = hw_dev_acquisition_start,
- .dev_acquisition_stop = hw_dev_acquisition_stop,
-};
projects / libsigrok.git / commitdiff