--- /dev/null
+/*
+ * This file is part of the libsigrok project.
+ *
+ * Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
+ * With protocol information from the hantekdso project,
+ * Copyright (C) 2008 Oleg Khudyakov <prcoder@gmail.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 "libsigrok.h"
+#include "libsigrok-internal.h"
+#include "dso.h"
+#include <string.h>
+#include <glib.h>
+#include <libusb.h>
+
+extern struct sr_dev_driver hantek_dso_driver_info;
+
+static int send_begin(const struct sr_dev_inst *sdi)
+{
+ struct sr_usb_dev_inst *usb;
+ int ret;
+ unsigned char buffer[] = {0x0f, 0x03, 0x03, 0x03, 0x68, 0xac, 0xfe,
+ 0x00, 0x01, 0x00};
+
+ sr_dbg("Sending CTRL_BEGINCOMMAND.");
+
+ usb = sdi->conn;
+ if ((ret = libusb_control_transfer(usb->devhdl,
+ LIBUSB_REQUEST_TYPE_VENDOR, CTRL_BEGINCOMMAND,
+ 0, 0, buffer, sizeof(buffer), 200)) != sizeof(buffer)) {
+ sr_err("Failed to send begincommand: %s.",
+ libusb_error_name(ret));
+ return SR_ERR;
+ }
+
+ return SR_OK;
+}
+
+static int send_bulkcmd(const struct sr_dev_inst *sdi, uint8_t *cmdstring, int cmdlen)
+{
+ struct sr_usb_dev_inst *usb;
+ int ret, tmp;
+
+ usb = sdi->conn;
+
+ if (send_begin(sdi) != SR_OK)
+ return SR_ERR;
+
+ if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, cmdstring,
+ cmdlen, &tmp, 200)) != 0)
+ return SR_ERR;
+
+ return SR_OK;
+}
+
+static int dso_getmps(libusb_device *dev)
+{
+ struct libusb_device_descriptor des;
+ struct libusb_config_descriptor *conf_dsc;
+ const struct libusb_interface_descriptor *intf_dsc;
+ int mps;
+
+ if (libusb_get_device_descriptor(dev, &des) != 0)
+ return 0;
+
+ if (des.bNumConfigurations != 1)
+ return 0;
+
+ if (libusb_get_config_descriptor(dev, 0, &conf_dsc) != 0)
+ return 0;
+
+ mps = 0;
+ intf_dsc = &(conf_dsc->interface[0].altsetting[0]);
+ if (intf_dsc->bNumEndpoints != 2)
+ goto err;
+
+ if ((intf_dsc->endpoint[0].bEndpointAddress & 0x8f) !=
+ (2 | LIBUSB_ENDPOINT_OUT))
+ /* The first endpoint should be 2 (outbound). */
+ goto err;
+
+ if ((intf_dsc->endpoint[1].bEndpointAddress & 0x8f) !=
+ (6 | LIBUSB_ENDPOINT_IN))
+ /* The second endpoint should be 6 (inbound). */
+ goto err;
+
+ mps = intf_dsc->endpoint[1].wMaxPacketSize;
+
+err:
+ if (conf_dsc)
+ libusb_free_config_descriptor(conf_dsc);
+
+ return mps;
+}
+
+SR_PRIV int dso_open(struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ struct drv_context *drvc = hantek_dso_driver_info.priv;
+ struct sr_usb_dev_inst *usb;
+ struct libusb_device_descriptor des;
+ libusb_device **devlist;
+ int err, skip, i;
+
+ devc = sdi->priv;
+ usb = sdi->conn;
+
+ if (sdi->status == SR_ST_ACTIVE)
+ /* already in use */
+ return SR_ERR;
+
+ skip = 0;
+ libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
+ for (i = 0; devlist[i]; i++) {
+ if ((err = libusb_get_device_descriptor(devlist[i], &des))) {
+ sr_err("Failed to get device descriptor: %s.",
+ libusb_error_name(err));
+ continue;
+ }
+
+ if (des.idVendor != devc->profile->fw_vid
+ || des.idProduct != devc->profile->fw_pid)
+ continue;
+
+ if (sdi->status == SR_ST_INITIALIZING) {
+ if (skip != sdi->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]) != usb->bus
+ || libusb_get_device_address(devlist[i]) != usb->address)
+ /* this is not the one */
+ continue;
+ }
+
+ if (!(err = libusb_open(devlist[i], &usb->devhdl))) {
+ if (usb->address == 0xff)
+ /*
+ * first time we touch this device after firmware upload,
+ * so we don't know the address yet.
+ */
+ usb->address = libusb_get_device_address(devlist[i]);
+
+ if (!(devc->epin_maxpacketsize = dso_getmps(devlist[i])))
+ sr_err("Wrong endpoint profile.");
+ else {
+ sdi->status = SR_ST_ACTIVE;
+ sr_info("Opened device %d on %d.%d interface %d.",
+ sdi->index, usb->bus,
+ usb->address, USB_INTERFACE);
+ }
+ } else {
+ sr_err("Failed to open device: %s.",
+ libusb_error_name(err));
+ }
+
+ /* If we made it here, we handled the device (somehow). */
+ break;
+ }
+ libusb_free_device_list(devlist, 1);
+
+ if (sdi->status != SR_ST_ACTIVE)
+ return SR_ERR;
+
+ return SR_OK;
+}
+
+SR_PRIV void dso_close(struct sr_dev_inst *sdi)
+{
+ struct sr_usb_dev_inst *usb;
+
+ usb = sdi->conn;
+
+ if (usb->devhdl == NULL)
+ return;
+
+ sr_info("Closing device %d on %d.%d interface %d.", sdi->index,
+ usb->bus, usb->address, USB_INTERFACE);
+ libusb_release_interface(usb->devhdl, USB_INTERFACE);
+ libusb_close(usb->devhdl);
+ usb->devhdl = NULL;
+ sdi->status = SR_ST_INACTIVE;
+
+}
+
+static int get_channel_offsets(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ struct sr_usb_dev_inst *usb;
+ GString *gs;
+ int chan, v, ret;
+
+ sr_dbg("Getting channel offsets.");
+
+ devc = sdi->priv;
+ usb = sdi->conn;
+
+ ret = libusb_control_transfer(usb->devhdl,
+ LIBUSB_ENDPOINT_IN | LIBUSB_REQUEST_TYPE_VENDOR,
+ CTRL_READ_EEPROM, EEPROM_CHANNEL_OFFSETS, 0,
+ (unsigned char *)&devc->channel_levels,
+ sizeof(devc->channel_levels), 200);
+ if (ret != sizeof(devc->channel_levels)) {
+ sr_err("Failed to get channel offsets: %s.",
+ libusb_error_name(ret));
+ return SR_ERR;
+ }
+
+ /* Comes in as 16-bit numbers with the second byte always 0 on
+ * the DSO-2090. Guessing this is supposed to be big-endian,
+ * since that's how voltage offsets are submitted back to the DSO.
+ * Convert to host order now, so we can use them natively.
+ */
+ for (chan = 0; chan < 2; chan++) {
+ for (v = 0; v < 9; v++) {
+ devc->channel_levels[chan][v][0] =
+ g_ntohs(devc->channel_levels[chan][v][0]);
+ devc->channel_levels[chan][v][1] =
+ g_ntohs(devc->channel_levels[chan][v][1]);
+ }
+ }
+
+ if (sr_log_loglevel_get() >= SR_LOG_DBG) {
+ gs = g_string_sized_new(128);
+ for (chan = 0; chan < 2; chan++) {
+ g_string_printf(gs, "CH%d:", chan + 1);
+ for (v = 0; v < 9; v++) {
+ g_string_append_printf(gs, " %.4x-%.4x",
+ devc->channel_levels[chan][v][0],
+ devc->channel_levels[chan][v][1]);
+ }
+ sr_dbg("%s", gs->str);
+ }
+ g_string_free(gs, TRUE);
+ }
+
+ return SR_OK;
+}
+
+static int dso_set_trigger_samplerate(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ struct sr_usb_dev_inst *usb;
+ int ret, tmp;
+ uint8_t cmdstring[12];
+ uint16_t timebase_small[] = { 0xffff, 0xfffc, 0xfff7, 0xffe8, 0xffce,
+ 0xff9c, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79, 0xd8f1 };
+ uint16_t timebase_large[] = { 0xffff, 0x0000, 0xfffc, 0xfff7, 0xffe8,
+ 0xffce, 0xff9d, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79 };
+
+ sr_dbg("Preparing CMD_SET_TRIGGER_SAMPLERATE.");
+
+ devc = sdi->priv;
+ usb = sdi->conn;
+
+ memset(cmdstring, 0, sizeof(cmdstring));
+ /* Command */
+ cmdstring[0] = CMD_SET_TRIGGER_SAMPLERATE;
+
+ /* Trigger source */
+ sr_dbg("Trigger source %s.", devc->triggersource);
+ if (!strcmp("CH2", devc->triggersource))
+ tmp = 0;
+ else if (!strcmp("CH1", devc->triggersource))
+ tmp = 1;
+ else if (!strcmp("EXT", devc->triggersource))
+ tmp = 2;
+ else {
+ sr_err("Invalid trigger source: '%s'.", devc->triggersource);
+ return SR_ERR_ARG;
+ }
+ cmdstring[2] = tmp;
+
+ /* Frame size */
+ sr_dbg("Frame size: %d.", devc->framesize);
+ cmdstring[2] |= (devc->framesize == FRAMESIZE_SMALL ? 0x01 : 0x02) << 2;
+
+ /* Timebase fast */
+ sr_dbg("Time base index: %d.", devc->timebase);
+ if (devc->framesize == FRAMESIZE_SMALL) {
+ if (devc->timebase < TIME_20us)
+ tmp = 0;
+ else if (devc->timebase == TIME_20us)
+ tmp = 1;
+ else if (devc->timebase == TIME_40us)
+ tmp = 2;
+ else if (devc->timebase == TIME_100us)
+ tmp = 3;
+ else if (devc->timebase >= TIME_200us)
+ tmp = 4;
+ } else {
+ if (devc->timebase < TIME_40us) {
+ sr_err("Timebase < 40us only supported with 10K buffer.");
+ return SR_ERR_ARG;
+ }
+ else if (devc->timebase == TIME_40us)
+ tmp = 0;
+ else if (devc->timebase == TIME_100us)
+ tmp = 2;
+ else if (devc->timebase == TIME_200us)
+ tmp = 3;
+ else if (devc->timebase >= TIME_400us)
+ tmp = 4;
+ }
+ cmdstring[2] |= (tmp & 0x07) << 5;
+
+ /* Enabled channels: 00=CH1 01=CH2 10=both */
+ sr_dbg("Channels CH1=%d CH2=%d", devc->ch1_enabled, devc->ch2_enabled);
+ tmp = (((devc->ch2_enabled ? 1 : 0) << 1) + (devc->ch1_enabled ? 1 : 0)) - 1;
+ cmdstring[3] = tmp;
+
+ /* Fast rates channel */
+ /* TODO: Is this right? */
+ tmp = devc->timebase < TIME_10us ? 1 : 0;
+ cmdstring[3] |= tmp << 2;
+
+ /* Trigger slope: 0=positive 1=negative */
+ /* TODO: Does this work? */
+ sr_dbg("Trigger slope: %d.", devc->triggerslope);
+ cmdstring[3] |= (devc->triggerslope == SLOPE_NEGATIVE ? 1 : 0) << 3;
+
+ /* Timebase slow */
+ if (devc->timebase < TIME_100us)
+ tmp = 0;
+ else if (devc->timebase > TIME_400ms)
+ tmp = 0xffed;
+ else {
+ if (devc->framesize == FRAMESIZE_SMALL)
+ tmp = timebase_small[devc->timebase - 3];
+ else
+ tmp = timebase_large[devc->timebase - 3];
+ }
+ cmdstring[4] = tmp & 0xff;
+ cmdstring[5] = (tmp >> 8) & 0xff;
+
+ /* Horizontal trigger position */
+ sr_dbg("Trigger position: %3.2f.", devc->triggerposition);
+ tmp = 0x77fff + 0x8000 * devc->triggerposition;
+ cmdstring[6] = tmp & 0xff;
+ cmdstring[7] = (tmp >> 8) & 0xff;
+ cmdstring[10] = (tmp >> 16) & 0xff;
+
+ if (send_begin(sdi) != SR_OK)
+ return SR_ERR;
+
+ if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT,
+ cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) {
+ sr_err("Failed to set trigger/samplerate: %s.",
+ libusb_error_name(ret));
+ return SR_ERR;
+ }
+ sr_dbg("Sent CMD_SET_TRIGGER_SAMPLERATE.");
+
+ return SR_OK;
+}
+
+static int dso_set_filters(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ struct sr_usb_dev_inst *usb;
+ int ret, tmp;
+ uint8_t cmdstring[8];
+
+ sr_dbg("Preparing CMD_SET_FILTERS.");
+
+ devc = sdi->priv;
+ usb = sdi->conn;
+
+ memset(cmdstring, 0, sizeof(cmdstring));
+ cmdstring[0] = CMD_SET_FILTERS;
+ cmdstring[1] = 0x0f;
+ if (devc->filter_ch1) {
+ sr_dbg("Turning on CH1 filter.");
+ cmdstring[2] |= 0x80;
+ }
+ if (devc->filter_ch2) {
+ sr_dbg("Turning on CH2 filter.");
+ cmdstring[2] |= 0x40;
+ }
+ if (devc->filter_trigger) {
+ /* TODO: supported on the DSO-2090? */
+ sr_dbg("Turning on trigger filter.");
+ cmdstring[2] |= 0x20;
+ }
+
+ if (send_begin(sdi) != SR_OK)
+ return SR_ERR;
+
+ if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT,
+ cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) {
+ sr_err("Failed to set filters: %s.", libusb_error_name(ret));
+ return SR_ERR;
+ }
+ sr_dbg("Sent CMD_SET_FILTERS.");
+
+ return SR_OK;
+}
+
+static int dso_set_voltage(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ struct sr_usb_dev_inst *usb;
+ int ret, tmp;
+ uint8_t cmdstring[8];
+
+ sr_dbg("Preparing CMD_SET_VOLTAGE.");
+
+ devc = sdi->priv;
+ usb = sdi->conn;
+
+ memset(cmdstring, 0, sizeof(cmdstring));
+ cmdstring[0] = CMD_SET_VOLTAGE;
+ cmdstring[1] = 0x0f;
+ cmdstring[2] = 0x30;
+
+ /* CH1 volts/div is encoded in bits 0-1 */
+ sr_dbg("CH1 vdiv index: %d.", devc->voltage_ch1);
+ switch (devc->voltage_ch1) {
+ case VDIV_1V:
+ case VDIV_100MV:
+ case VDIV_10MV:
+ cmdstring[2] |= 0x00;
+ break;
+ case VDIV_2V:
+ case VDIV_200MV:
+ case VDIV_20MV:
+ cmdstring[2] |= 0x01;
+ break;
+ case VDIV_5V:
+ case VDIV_500MV:
+ case VDIV_50MV:
+ cmdstring[2] |= 0x02;
+ break;
+ }
+
+ /* CH2 volts/div is encoded in bits 2-3 */
+ sr_dbg("CH2 vdiv index: %d.", devc->voltage_ch2);
+ switch (devc->voltage_ch2) {
+ case VDIV_1V:
+ case VDIV_100MV:
+ case VDIV_10MV:
+ cmdstring[2] |= 0x00;
+ break;
+ case VDIV_2V:
+ case VDIV_200MV:
+ case VDIV_20MV:
+ cmdstring[2] |= 0x04;
+ break;
+ case VDIV_5V:
+ case VDIV_500MV:
+ case VDIV_50MV:
+ cmdstring[2] |= 0x08;
+ break;
+ }
+
+ if (send_begin(sdi) != SR_OK)
+ return SR_ERR;
+
+ if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT,
+ cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) {
+ sr_err("Failed to set voltage: %s.", libusb_error_name(ret));
+ return SR_ERR;
+ }
+ sr_dbg("Sent CMD_SET_VOLTAGE.");
+
+ return SR_OK;
+}
+
+static int dso_set_relays(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ struct sr_usb_dev_inst *usb;
+ GString *gs;
+ int ret, i;
+ uint8_t relays[17] = { 0x00, 0x04, 0x08, 0x02, 0x20, 0x40, 0x10, 0x01,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+
+ sr_dbg("Preparing CTRL_SETRELAYS.");
+
+ devc = sdi->priv;
+ usb = sdi->conn;
+
+ if (devc->voltage_ch1 < VDIV_1V)
+ relays[1] = ~relays[1];
+
+ if (devc->voltage_ch1 < VDIV_100MV)
+ relays[2] = ~relays[2];
+
+ sr_dbg("CH1 coupling: %d.", devc->coupling_ch1);
+ if (devc->coupling_ch1 != COUPLING_AC)
+ relays[3] = ~relays[3];
+
+ if (devc->voltage_ch2 < VDIV_1V)
+ relays[4] = ~relays[4];
+
+ if (devc->voltage_ch2 < VDIV_100MV)
+ relays[5] = ~relays[5];
+
+ sr_dbg("CH2 coupling: %d.", devc->coupling_ch1);
+ if (devc->coupling_ch2 != COUPLING_AC)
+ relays[6] = ~relays[6];
+
+ if (!strcmp(devc->triggersource, "EXT"))
+ relays[7] = ~relays[7];
+
+ if (sr_log_loglevel_get() >= SR_LOG_DBG) {
+ gs = g_string_sized_new(128);
+ g_string_printf(gs, "Relays:");
+ for (i = 0; i < 17; i++)
+ g_string_append_printf(gs, " %.2x", relays[i]);
+ sr_dbg("%s", gs->str);
+ g_string_free(gs, TRUE);
+ }
+
+ if ((ret = libusb_control_transfer(usb->devhdl,
+ LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETRELAYS,
+ 0, 0, relays, 17, 100)) != sizeof(relays)) {
+ sr_err("Failed to set relays: %s.", libusb_error_name(ret));
+ return SR_ERR;
+ }
+ sr_dbg("Sent CTRL_SETRELAYS.");
+
+ return SR_OK;
+}
+
+static int dso_set_voffsets(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ struct sr_usb_dev_inst *usb;
+ int offset, ret;
+ uint16_t *ch_levels;
+ uint8_t offsets[17];
+
+ sr_dbg("Preparing CTRL_SETOFFSET.");
+
+ devc = sdi->priv;
+ usb = sdi->conn;
+
+ memset(offsets, 0, sizeof(offsets));
+ /* Channel 1 */
+ ch_levels = devc->channel_levels[0][devc->voltage_ch1];
+ offset = (ch_levels[1] - ch_levels[0]) * devc->voffset_ch1 + ch_levels[0];
+ offsets[0] = (offset >> 8) | 0x20;
+ offsets[1] = offset & 0xff;
+ sr_dbg("CH1 offset: %3.2f (%.2x%.2x).", devc->voffset_ch1,
+ offsets[0], offsets[1]);
+
+ /* Channel 2 */
+ ch_levels = devc->channel_levels[1][devc->voltage_ch2];
+ offset = (ch_levels[1] - ch_levels[0]) * devc->voffset_ch2 + ch_levels[0];
+ offsets[2] = (offset >> 8) | 0x20;
+ offsets[3] = offset & 0xff;
+ sr_dbg("CH2 offset: %3.2f (%.2x%.2x).", devc->voffset_ch2,
+ offsets[2], offsets[3]);
+
+ /* Trigger */
+ offset = MAX_VERT_TRIGGER * devc->voffset_trigger;
+ offsets[4] = (offset >> 8) | 0x20;
+ offsets[5] = offset & 0xff;
+ sr_dbg("Trigger offset: %3.2f (%.2x%.2x).", devc->voffset_trigger,
+ offsets[4], offsets[5]);
+
+ if ((ret = libusb_control_transfer(usb->devhdl,
+ LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETOFFSET,
+ 0, 0, offsets, sizeof(offsets), 100)) != sizeof(offsets)) {
+ sr_err("Failed to set offsets: %s.", libusb_error_name(ret));
+ return SR_ERR;
+ }
+ sr_dbg("Sent CTRL_SETOFFSET.");
+
+ return SR_OK;
+}
+
+SR_PRIV int dso_enable_trigger(const struct sr_dev_inst *sdi)
+{
+ struct sr_usb_dev_inst *usb;
+ int ret, tmp;
+ uint8_t cmdstring[2];
+
+ sr_dbg("Sending CMD_ENABLE_TRIGGER.");
+
+ usb = sdi->conn;
+
+ memset(cmdstring, 0, sizeof(cmdstring));
+ cmdstring[0] = CMD_ENABLE_TRIGGER;
+ cmdstring[1] = 0x00;
+
+ if (send_begin(sdi) != SR_OK)
+ return SR_ERR;
+
+ if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT,
+ cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) {
+ sr_err("Failed to enable trigger: %s.", libusb_error_name(ret));
+ return SR_ERR;
+ }
+
+ return SR_OK;
+}
+
+SR_PRIV int dso_force_trigger(const struct sr_dev_inst *sdi)
+{
+ struct sr_usb_dev_inst *usb;
+ int ret, tmp;
+ uint8_t cmdstring[2];
+
+ sr_dbg("Sending CMD_FORCE_TRIGGER.");
+
+ usb = sdi->conn;
+
+ memset(cmdstring, 0, sizeof(cmdstring));
+ cmdstring[0] = CMD_FORCE_TRIGGER;
+ cmdstring[1] = 0x00;
+
+ if (send_begin(sdi) != SR_OK)
+ return SR_ERR;
+
+ if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT,
+ cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) {
+ sr_err("Failed to force trigger: %s.", libusb_error_name(ret));
+ return SR_ERR;
+ }
+
+ return SR_OK;
+}
+
+SR_PRIV int dso_init(const struct sr_dev_inst *sdi)
+{
+
+ sr_dbg("Initializing DSO.");
+
+ if (get_channel_offsets(sdi) != SR_OK)
+ return SR_ERR;
+
+ if (dso_set_trigger_samplerate(sdi) != SR_OK)
+ return SR_ERR;
+
+ if (dso_set_filters(sdi) != SR_OK)
+ return SR_ERR;
+
+ if (dso_set_voltage(sdi) != SR_OK)
+ return SR_ERR;
+
+ if (dso_set_relays(sdi) != SR_OK)
+ return SR_ERR;
+
+ if (dso_set_voffsets(sdi) != SR_OK)
+ return SR_ERR;
+
+ if (dso_enable_trigger(sdi) != SR_OK)
+ return SR_ERR;
+
+ return SR_OK;
+}
+
+SR_PRIV int dso_get_capturestate(const struct sr_dev_inst *sdi,
+ uint8_t *capturestate, uint32_t *trigger_offset)
+{
+ struct sr_usb_dev_inst *usb;
+ int ret, tmp, i;
+ unsigned int bitvalue, toff;
+ uint8_t cmdstring[2], inbuf[512];
+
+ sr_dbg("Sending CMD_GET_CAPTURESTATE.");
+
+ usb = sdi->conn;
+
+ cmdstring[0] = CMD_GET_CAPTURESTATE;
+ cmdstring[1] = 0;
+
+ if ((ret = send_bulkcmd(sdi, cmdstring, sizeof(cmdstring))) != SR_OK) {
+ sr_dbg("Failed to send get_capturestate command: %s.",
+ libusb_error_name(ret));
+ return SR_ERR;
+ }
+
+ if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_IN,
+ inbuf, 512, &tmp, 100)) != 0) {
+ sr_dbg("Failed to get capturestate: %s.",
+ libusb_error_name(ret));
+ return SR_ERR;
+ }
+ *capturestate = inbuf[0];
+ toff = (inbuf[1] << 16) | (inbuf[3] << 8) | inbuf[2];
+
+ /*
+ * This conversion comes from the openhantek project.
+ * Each set bit in the 24-bit value inverts all bits with a lower
+ * value. No idea why the device reports the trigger point this way.
+ */
+ bitvalue = 1;
+ for (i = 0; i < 24; i++) {
+ /* Each set bit inverts all bits with a lower value. */
+ if(toff & bitvalue)
+ toff ^= bitvalue - 1;
+ bitvalue <<= 1;
+ }
+ *trigger_offset = toff;
+
+ return SR_OK;
+}
+
+SR_PRIV int dso_capture_start(const struct sr_dev_inst *sdi)
+{
+ int ret;
+ uint8_t cmdstring[2];
+
+ sr_dbg("Sending CMD_CAPTURE_START.");
+
+ cmdstring[0] = CMD_CAPTURE_START;
+ cmdstring[1] = 0;
+
+ if ((ret = send_bulkcmd(sdi, cmdstring, sizeof(cmdstring))) != SR_OK) {
+ sr_err("Failed to send capture_start command: %s.",
+ libusb_error_name(ret));
+ return SR_ERR;
+ }
+
+ return SR_OK;
+}
+
+SR_PRIV int dso_get_channeldata(const struct sr_dev_inst *sdi,
+ libusb_transfer_cb_fn cb)
+{
+ struct dev_context *devc;
+ struct sr_usb_dev_inst *usb;
+ struct libusb_transfer *transfer;
+ int num_transfers, ret, i;
+ uint8_t cmdstring[2];
+ unsigned char *buf;
+
+ sr_dbg("Sending CMD_GET_CHANNELDATA.");
+
+ devc = sdi->priv;
+ usb = sdi->conn;
+
+ cmdstring[0] = CMD_GET_CHANNELDATA;
+ cmdstring[1] = 0;
+
+ if ((ret = send_bulkcmd(sdi, cmdstring, sizeof(cmdstring))) != SR_OK) {
+ sr_err("Failed to get channel data: %s.",
+ libusb_error_name(ret));
+ return SR_ERR;
+ }
+
+ /* TODO: DSO-2xxx only. */
+ num_transfers = devc->framesize *
+ sizeof(unsigned short) / devc->epin_maxpacketsize;
+ sr_dbg("Queueing up %d transfers.", num_transfers);
+ for (i = 0; i < num_transfers; i++) {
+ if (!(buf = g_try_malloc(devc->epin_maxpacketsize))) {
+ sr_err("Failed to malloc USB endpoint buffer.");
+ return SR_ERR_MALLOC;
+ }
+ transfer = libusb_alloc_transfer(0);
+ libusb_fill_bulk_transfer(transfer, usb->devhdl, DSO_EP_IN, buf,
+ devc->epin_maxpacketsize, cb, (void *)sdi, 40);
+ if ((ret = libusb_submit_transfer(transfer)) != 0) {
+ sr_err("Failed to submit transfer: %s.",
+ libusb_error_name(ret));
+ /* TODO: Free them all. */
+ libusb_free_transfer(transfer);
+ g_free(buf);
+ return SR_ERR;
+ }
+ }
+
+ return SR_OK;
+}
projects / libsigrok.git / blobdiff