X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=hardware%2Fhantek-dso%2Fdso.c;fp=hardware%2Fhantek-dso%2Fdso.c;h=0000000000000000000000000000000000000000;hb=155b680da482cea2381becb73c51cfb838bff31e;hp=da5eb121b3a04ff1fab70c6bfa5358dc9ddb9959;hpb=43cd4637285833706f8a404ca027bcf0ee75b9ae;p=libsigrok.git diff --git a/hardware/hantek-dso/dso.c b/hardware/hantek-dso/dso.c deleted file mode 100644 index da5eb121..00000000 --- a/hardware/hantek-dso/dso.c +++ /dev/null @@ -1,787 +0,0 @@ -/* - * This file is part of the libsigrok project. - * - * Copyright (C) 2012 Bert Vermeulen - * With protocol information from the hantekdso project, - * Copyright (C) 2008 Oleg Khudyakov - * - * 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 . - */ - -#include "libsigrok.h" -#include "libsigrok-internal.h" -#include "dso.h" -#include -#include -#include - -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; -}