+++ /dev/null
-/*
- * This file is part of the sigrok project.
- *
- * Copyright (C) 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 <stdint.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <string.h>
-#include <sys/time.h>
-#include <inttypes.h>
-#include <glib.h>
-#include <libusb.h>
-#include "libsigrok.h"
-#include "libsigrok-internal.h"
-#include "config.h"
-#include "dso.h"
-
-
-/* Max time in ms before we want to check on USB events */
-/* TODO tune this properly */
-#define TICK 1
-
-static const int hwcaps[] = {
- SR_HWCAP_OSCILLOSCOPE,
- SR_HWCAP_LIMIT_SAMPLES,
- SR_HWCAP_CONTINUOUS,
- SR_HWCAP_TIMEBASE,
- SR_HWCAP_BUFFERSIZE,
- SR_HWCAP_TRIGGER_SOURCE,
- SR_HWCAP_TRIGGER_SLOPE,
- SR_HWCAP_HORIZ_TRIGGERPOS,
- SR_HWCAP_FILTER,
- SR_HWCAP_VDIV,
- SR_HWCAP_COUPLING,
- 0,
-};
-
-static const char *probe_names[] = {
- "CH1",
- "CH2",
- NULL,
-};
-
-static const struct dso_profile dev_profiles[] = {
- { 0x04b4, 0x2090, 0x04b5, 0x2090,
- "Hantek", "DSO-2090",
- FIRMWARE_DIR "/hantek-dso-2xxx.fw" },
- { 0x04b4, 0x2150, 0x04b5, 0x2150,
- "Hantek", "DSO-2150",
- FIRMWARE_DIR "/hantek-dso-2xxx.fw" },
- { 0x04b4, 0x2250, 0x04b5, 0x2250,
- "Hantek", "DSO-2250",
- FIRMWARE_DIR "/hantek-dso-2xxx.fw" },
- { 0x04b4, 0x5200, 0x04b5, 0x5200,
- "Hantek", "DSO-5200",
- FIRMWARE_DIR "/hantek-dso-5xxx.fw" },
- { 0x04b4, 0x520a, 0x04b5, 0x520a,
- "Hantek", "DSO-5200A",
- FIRMWARE_DIR "/hantek-dso-5xxx.fw" },
- { 0, 0, 0, 0, 0, 0, 0 },
-};
-
-static const uint64_t buffersizes[] = {
- 10240,
- 32768,
- /* TODO: 65535 */
- 0,
-};
-
-static const struct sr_rational timebases[] = {
- /* microseconds */
- { 10, 1000000 },
- { 20, 1000000 },
- { 40, 1000000 },
- { 100, 1000000 },
- { 200, 1000000 },
- { 400, 1000000 },
- /* milliseconds */
- { 1, 1000 },
- { 2, 1000 },
- { 4, 1000 },
- { 10, 1000 },
- { 20, 1000 },
- { 40, 1000 },
- { 100, 1000 },
- { 200, 1000 },
- { 400, 1000 },
- { 0, 0},
-};
-
-static const struct sr_rational vdivs[] = {
- /* millivolts */
- { 10, 1000 },
- { 20, 1000 },
- { 50, 1000 },
- { 100, 1000 },
- { 200, 1000 },
- { 500, 1000 },
- /* volts */
- { 1, 1 },
- { 2, 1 },
- { 5, 1 },
- { 0, 0 },
-};
-
-static const char *trigger_sources[] = {
- "CH1",
- "CH2",
- "EXT",
- /* TODO: forced */
- NULL,
-};
-
-static const char *filter_targets[] = {
- "CH1",
- "CH2",
- /* TODO: "TRIGGER", */
- NULL,
-};
-
-static const char *coupling[] = {
- "AC",
- "DC",
- "GND",
- NULL,
-};
-
-SR_PRIV struct sr_dev_driver hantek_dso_driver_info;
-static struct sr_dev_driver *hdi = &hantek_dso_driver_info;
-static int hw_dev_acquisition_stop(const struct sr_dev_inst *sdi,
- void *cb_data);
-
-static struct sr_dev_inst *dso_dev_new(int index, const struct dso_profile *prof)
-{
- struct sr_dev_inst *sdi;
- struct sr_probe *probe;
- struct drv_context *drvc;
- struct dev_context *devc;
- int i;
-
- sdi = sr_dev_inst_new(index, SR_ST_INITIALIZING,
- prof->vendor, prof->model, NULL);
- if (!sdi)
- return NULL;
- sdi->driver = hdi;
-
- /* Add only the real probes -- EXT isn't a source of data, only
- * a trigger source internal to the device.
- */
- for (i = 0; probe_names[i]; i++) {
- if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE,
- probe_names[i])))
- return NULL;
- sdi->probes = g_slist_append(sdi->probes, probe);
- }
-
- if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
- sr_err("hantek-dso: devc malloc failed");
- return NULL;
- }
- devc->profile = prof;
- devc->dev_state = IDLE;
- devc->timebase = DEFAULT_TIMEBASE;
- devc->ch1_enabled = TRUE;
- devc->ch2_enabled = TRUE;
- devc->voltage_ch1 = DEFAULT_VOLTAGE;
- devc->voltage_ch2 = DEFAULT_VOLTAGE;
- devc->coupling_ch1 = DEFAULT_COUPLING;
- devc->coupling_ch2 = DEFAULT_COUPLING;
- devc->voffset_ch1 = DEFAULT_VERT_OFFSET;
- devc->voffset_ch2 = DEFAULT_VERT_OFFSET;
- devc->voffset_trigger = DEFAULT_VERT_TRIGGERPOS;
- devc->framesize = DEFAULT_FRAMESIZE;
- devc->triggerslope = SLOPE_POSITIVE;
- devc->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE);
- devc->triggerposition = DEFAULT_HORIZ_TRIGGERPOS;
- sdi->priv = devc;
- drvc = hdi->priv;
- drvc->instances = g_slist_append(drvc->instances, sdi);
-
- return sdi;
-}
-
-static int configure_probes(struct dev_context *devc, const GSList *probes)
-{
- const struct sr_probe *probe;
- const GSList *l;
-
- devc->ch1_enabled = devc->ch2_enabled = FALSE;
- for (l = probes; l; l = l->next) {
- probe = (struct sr_probe *)l->data;
- if (probe->index == 0)
- devc->ch1_enabled = probe->enabled;
- else if (probe->index == 1)
- devc->ch2_enabled = probe->enabled;
- }
-
- return SR_OK;
-}
-
-/* Properly close and free all devices. */
-static void clear_instances(void)
-{
- struct sr_dev_inst *sdi;
- struct drv_context *drvc;
- struct dev_context *devc;
- GSList *l;
-
- drvc = hdi->priv;
- for (l = drvc->instances; l; l = l->next) {
- if (!(sdi = l->data)) {
- /* Log error, but continue cleaning up the rest. */
- sr_err("hantek-dso: %s: sdi was NULL, continuing", __func__);
- continue;
- }
- if (!(devc = sdi->priv)) {
- /* Log error, but continue cleaning up the rest. */
- sr_err("hantek-dso: %s: sdi->priv was NULL, continuing", __func__);
- continue;
- }
- dso_close(sdi);
- sr_usb_dev_inst_free(devc->usb);
- g_free(devc->triggersource);
-
- sr_dev_inst_free(sdi);
- }
-
- g_slist_free(drvc->instances);
- drvc->instances = NULL;
-
-}
-
-static int hw_init(void)
-{
- struct drv_context *drvc;
-
- if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
- sr_err("hantek-dso: driver context malloc failed.");
- return SR_ERR;
- }
-
- if (libusb_init(&drvc->usb_context) != 0) {
- g_free(drvc);
- sr_err("hantek-dso: Failed to initialize USB.");
- return SR_ERR;
- }
-
- hdi->priv = drvc;
-
- return SR_OK;
-}
-
-static GSList *hw_scan(GSList *options)
-{
- struct sr_dev_inst *sdi;
- const struct dso_profile *prof;
- struct drv_context *drvc;
- struct dev_context *devc;
- GSList *devices;
- struct libusb_device_descriptor des;
- libusb_device **devlist;
- int devcnt, ret, i, j;
-
- (void)options;
- devcnt = 0;
- devices = 0;
- drvc = hdi->priv;
- drvc->instances = NULL;
-
- clear_instances();
-
- /* Find all Hantek DSO devices and upload firmware to all of them. */
- libusb_get_device_list(drvc->usb_context, &devlist);
- for (i = 0; devlist[i]; i++) {
- if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
- sr_err("hantek-dso: failed to get device descriptor: %d", ret);
- continue;
- }
-
- prof = NULL;
- for (j = 0; dev_profiles[j].orig_vid; j++) {
- if (des.idVendor == dev_profiles[j].orig_vid
- && des.idProduct == dev_profiles[j].orig_pid) {
- /* Device matches the pre-firmware profile. */
- prof = &dev_profiles[j];
- sr_dbg("hantek-dso: Found a %s %s.", prof->vendor, prof->model);
- sdi = dso_dev_new(devcnt, prof);
- devices = g_slist_append(devices, sdi);
- devc = sdi->priv;
- if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
- prof->firmware) == SR_OK)
- /* Remember when the firmware on this device was updated */
- devc->fw_updated = g_get_monotonic_time();
- else
- sr_err("hantek-dso: firmware upload failed for "
- "device %d", devcnt);
- /* Dummy USB address of 0xff will get overwritten later. */
- devc->usb = sr_usb_dev_inst_new(
- libusb_get_bus_number(devlist[i]), 0xff, NULL);
- devcnt++;
- break;
- } else if (des.idVendor == dev_profiles[j].fw_vid
- && des.idProduct == dev_profiles[j].fw_pid) {
- /* Device matches the post-firmware profile. */
- prof = &dev_profiles[j];
- sr_dbg("hantek-dso: Found a %s %s.", prof->vendor, prof->model);
- sdi = dso_dev_new(devcnt, prof);
- sdi->status = SR_ST_INACTIVE;
- devices = g_slist_append(devices, sdi);
- devc = sdi->priv;
- devc->usb = sr_usb_dev_inst_new(
- libusb_get_bus_number(devlist[i]),
- libusb_get_device_address(devlist[i]), NULL);
- devcnt++;
- break;
- }
- }
- if (!prof)
- /* not a supported VID/PID */
- continue;
- }
- libusb_free_device_list(devlist, 1);
-
- return devices;
-}
-
-static int hw_dev_open(struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- int64_t timediff_us, timediff_ms;
- int err;
-
- devc = sdi->priv;
-
- /*
- * if the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
- * for the FX2 to renumerate
- */
- err = SR_ERR;
- if (devc->fw_updated > 0) {
- sr_info("hantek-dso: waiting for device to reset");
- /* takes at least 300ms for the FX2 to be gone from the USB bus */
- g_usleep(300 * 1000);
- timediff_ms = 0;
- while (timediff_ms < MAX_RENUM_DELAY_MS) {
- if ((err = dso_open(sdi)) == SR_OK)
- break;
- g_usleep(100 * 1000);
- timediff_us = g_get_monotonic_time() - devc->fw_updated;
- timediff_ms = timediff_us / 1000;
- sr_spew("hantek-dso: waited %" PRIi64 " ms", timediff_ms);
- }
- sr_info("hantek-dso: device came back after %d ms", timediff_ms);
- } else {
- err = dso_open(sdi);
- }
-
- if (err != SR_OK) {
- sr_err("hantek-dso: unable to open device");
- return SR_ERR;
- }
-
- err = libusb_claim_interface(devc->usb->devhdl, USB_INTERFACE);
- if (err != 0) {
- sr_err("hantek-dso: Unable to claim interface: %d", err);
- return SR_ERR;
- }
-
- return SR_OK;
-}
-
-static int hw_dev_close(struct sr_dev_inst *sdi)
-{
-
- dso_close(sdi);
-
- return SR_OK;
-}
-
-static int hw_cleanup(void)
-{
- struct drv_context *drvc;
-
- if (!(drvc = hdi->priv))
- return SR_OK;
-
- clear_instances();
-
- if (drvc->usb_context)
- libusb_exit(drvc->usb_context);
- drvc->usb_context = NULL;
-
- return SR_OK;
-}
-
-static int hw_info_get(int info_id, const void **data,
- const struct sr_dev_inst *sdi)
-{
- uint64_t tmp;
-
- (void)sdi;
-
- switch (info_id) {
- case SR_DI_HWCAPS:
- *data = hwcaps;
- break;
- case SR_DI_NUM_PROBES:
- *data = GINT_TO_POINTER(NUM_PROBES);
- break;
- case SR_DI_PROBE_NAMES:
- *data = probe_names;
- break;
- case SR_DI_BUFFERSIZES:
- *data = buffersizes;
- break;
- case SR_DI_TIMEBASES:
- *data = timebases;
- break;
- case SR_DI_TRIGGER_SOURCES:
- *data = trigger_sources;
- break;
- case SR_DI_FILTERS:
- *data = filter_targets;
- break;
- case SR_DI_VDIVS:
- *data = vdivs;
- break;
- case SR_DI_COUPLING:
- *data = coupling;
- break;
- /* TODO remove this */
- case SR_DI_CUR_SAMPLERATE:
- *data = &tmp;
- break;
- default:
- return SR_ERR_ARG;
- }
-
- return SR_OK;
-}
-
-static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
- const void *value)
-{
- struct dev_context *devc;
- struct sr_rational tmp_rat;
- float tmp_float;
- uint64_t tmp_u64;
- int ret, i;
- char **targets;
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR;
-
- ret = SR_OK;
- devc = sdi->priv;
- switch (hwcap) {
- case SR_HWCAP_LIMIT_FRAMES:
- devc->limit_frames = *(const uint64_t *)value;
- break;
- case SR_HWCAP_PROBECONFIG:
- ret = configure_probes(devc, (const GSList *)value);
- break;
- case SR_HWCAP_TRIGGER_SLOPE:
- tmp_u64 = *(const int *)value;
- if (tmp_u64 != SLOPE_NEGATIVE && tmp_u64 != SLOPE_POSITIVE)
- ret = SR_ERR_ARG;
- devc->triggerslope = tmp_u64;
- break;
- case SR_HWCAP_HORIZ_TRIGGERPOS:
- tmp_float = *(const float *)value;
- if (tmp_float < 0.0 || tmp_float > 1.0) {
- sr_err("hantek-dso: trigger position should be between 0.0 and 1.0");
- ret = SR_ERR_ARG;
- } else
- devc->triggerposition = tmp_float;
- break;
- case SR_HWCAP_BUFFERSIZE:
- tmp_u64 = *(const int *)value;
- for (i = 0; buffersizes[i]; i++) {
- if (buffersizes[i] == tmp_u64) {
- devc->framesize = tmp_u64;
- break;
- }
- }
- if (buffersizes[i] == 0)
- ret = SR_ERR_ARG;
- break;
- case SR_HWCAP_TIMEBASE:
- tmp_rat = *(const struct sr_rational *)value;
- for (i = 0; timebases[i].p && timebases[i].q; i++) {
- if (timebases[i].p == tmp_rat.p
- && timebases[i].q == tmp_rat.q) {
- devc->timebase = i;
- break;
- }
- }
- if (timebases[i].p == 0 && timebases[i].q == 0)
- ret = SR_ERR_ARG;
- break;
- case SR_HWCAP_TRIGGER_SOURCE:
- for (i = 0; trigger_sources[i]; i++) {
- if (!strcmp(value, trigger_sources[i])) {
- devc->triggersource = g_strdup(value);
- break;
- }
- }
- if (trigger_sources[i] == 0)
- ret = SR_ERR_ARG;
- break;
- case SR_HWCAP_FILTER:
- devc->filter_ch1 = devc->filter_ch2 = devc->filter_trigger = 0;
- targets = g_strsplit(value, ",", 0);
- for (i = 0; targets[i]; i++) {
- if (targets[i] == '\0')
- /* Empty filter string can be used to clear them all. */
- ;
- else if (!strcmp(targets[i], "CH1"))
- devc->filter_ch1 = TRUE;
- else if (!strcmp(targets[i], "CH2"))
- devc->filter_ch2 = TRUE;
- else if (!strcmp(targets[i], "TRIGGER"))
- devc->filter_trigger = TRUE;
- else {
- sr_err("invalid filter target %s", targets[i]);
- ret = SR_ERR_ARG;
- }
- }
- g_strfreev(targets);
- break;
- case SR_HWCAP_VDIV:
- /* TODO not supporting vdiv per channel yet */
- tmp_rat = *(const struct sr_rational *)value;
- for (i = 0; vdivs[i].p && vdivs[i].q; i++) {
- if (vdivs[i].p == tmp_rat.p
- && vdivs[i].q == tmp_rat.q) {
- devc->voltage_ch1 = i;
- devc->voltage_ch2 = i;
- break;
- }
- }
- if (vdivs[i].p == 0 && vdivs[i].q == 0)
- ret = SR_ERR_ARG;
- break;
- case SR_HWCAP_COUPLING:
- /* TODO not supporting coupling per channel yet */
- for (i = 0; coupling[i]; i++) {
- if (!strcmp(value, coupling[i])) {
- devc->coupling_ch1 = i;
- devc->coupling_ch2 = i;
- break;
- }
- }
- if (coupling[i] == 0)
- ret = SR_ERR_ARG;
- break;
- default:
- ret = SR_ERR_ARG;
- }
-
- return ret;
-}
-
-static void send_chunk(struct dev_context *devc, unsigned char *buf,
- int num_samples)
-{
- struct sr_datafeed_packet packet;
- struct sr_datafeed_analog analog;
- float ch1, ch2, range;
- int num_probes, data_offset, i;
-
- num_probes = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
- packet.type = SR_DF_ANALOG;
- packet.payload = &analog;
- /* TODO: support for 5xxx series 9-bit samples */
- analog.num_samples = num_samples;
- analog.mq = SR_MQ_VOLTAGE;
- analog.unit = SR_UNIT_VOLT;
- analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_probes);
- data_offset = 0;
- for (i = 0; i < analog.num_samples; i++) {
- /* The device always sends data for both channels. If a channel
- * is disabled, it contains a copy of the enabled channel's
- * data. However, we only send the requested channels to the bus.
- *
- * Voltage values are encoded as a value 0-255 (0-512 on the 5200*),
- * where the value is a point in the range represented by the vdiv
- * setting. There are 8 vertical divs, so e.g. 500mV/div represents
- * 4V peak-to-peak where 0 = -2V and 255 = +2V.
- */
- /* TODO: support for 5xxx series 9-bit samples */
- if (devc->ch1_enabled) {
- range = ((float)vdivs[devc->voltage_ch1].p / vdivs[devc->voltage_ch1].q) * 8;
- ch1 = range / 255 * *(buf + i * 2 + 1);
- /* Value is centered around 0V. */
- ch1 -= range / 2;
- analog.data[data_offset++] = ch1;
- }
- if (devc->ch2_enabled) {
- range = ((float)vdivs[devc->voltage_ch2].p / vdivs[devc->voltage_ch2].q) * 8;
- ch2 = range / 255 * *(buf + i * 2);
- ch2 -= range / 2;
- analog.data[data_offset++] = ch2;
- }
- }
- sr_session_send(devc->cb_data, &packet);
-
-}
-
-/* Called by libusb (as triggered by handle_event()) when a transfer comes in.
- * Only channel data comes in asynchronously, and all transfers for this are
- * queued up beforehand, so this just needs so chuck the incoming data onto
- * the libsigrok session bus.
- */
-static void receive_transfer(struct libusb_transfer *transfer)
-{
- struct sr_datafeed_packet packet;
- struct dev_context *devc;
- int num_samples, pre;
-
- devc = transfer->user_data;
- sr_dbg("hantek-dso: receive_transfer(): status %d received %d bytes",
- transfer->status, transfer->actual_length);
-
- if (transfer->actual_length == 0)
- /* Nothing to send to the bus. */
- return;
-
- num_samples = transfer->actual_length / 2;
-
- sr_dbg("hantek-dso: got %d-%d/%d samples in frame", devc->samp_received + 1,
- devc->samp_received + num_samples, devc->framesize);
-
- /* The device always sends a full frame, but the beginning of the frame
- * doesn't represent the trigger point. The offset at which the trigger
- * happened came in with the capture state, so we need to start sending
- * from there up the session bus. The samples in the frame buffer before
- * that trigger point came after the end of the device's frame buffer was
- * reached, and it wrapped around to overwrite up until the trigger point.
- */
- if (devc->samp_received < devc->trigger_offset) {
- /* Trigger point not yet reached. */
- if (devc->samp_received + num_samples < devc->trigger_offset) {
- /* The entire chunk is before the trigger point. */
- memcpy(devc->framebuf + devc->samp_buffered * 2,
- transfer->buffer, num_samples * 2);
- devc->samp_buffered += num_samples;
- } else {
- /* This chunk hits or overruns the trigger point.
- * Store the part before the trigger fired, and
- * send the rest up to the session bus. */
- pre = devc->trigger_offset - devc->samp_received;
- memcpy(devc->framebuf + devc->samp_buffered * 2,
- transfer->buffer, pre * 2);
- devc->samp_buffered += pre;
-
- /* The rest of this chunk starts with the trigger point. */
- sr_dbg("hantek-dso: reached trigger point, %d samples buffered",
- devc->samp_buffered);
-
- /* Avoid the corner case where the chunk ended at
- * exactly the trigger point. */
- if (num_samples > pre)
- send_chunk(devc, transfer->buffer + pre * 2,
- num_samples - pre);
- }
- } else {
- /* Already past the trigger point, just send it all out. */
- send_chunk(devc, transfer->buffer,
- num_samples);
- }
-
- devc->samp_received += num_samples;
-
- /* Everything in this transfer was either copied to the buffer or
- * sent to the session bus. */
- g_free(transfer->buffer);
- libusb_free_transfer(transfer);
-
- if (devc->samp_received >= devc->framesize) {
- /* That was the last chunk in this frame. Send the buffered
- * pre-trigger samples out now, in one big chunk. */
- sr_dbg("hantek-dso: end of frame, sending %d pre-trigger buffered samples",
- devc->samp_buffered);
- send_chunk(devc, devc->framebuf, devc->samp_buffered);
-
- /* Mark the end of this frame. */
- packet.type = SR_DF_FRAME_END;
- sr_session_send(devc->cb_data, &packet);
-
- if (devc->limit_frames && ++devc->num_frames == devc->limit_frames) {
- /* Terminate session */
- /* TODO: don't leave pending USB transfers hanging */
- packet.type = SR_DF_END;
- sr_session_send(ctx->cb_data, &packet);
- } else {
- devc->dev_state = NEW_CAPTURE;
- }
- }
-
-}
-
-static int handle_event(int fd, int revents, void *cb_data)
-{
- struct sr_datafeed_packet packet;
- struct timeval tv;
- int num_probes;
- struct drv_context *drvc;
- struct dev_context *devc;
- uint32_t trigger_offset;
- uint8_t capturestate;
-
- /* Avoid compiler warnings. */
- (void)fd;
- (void)revents;
-
- drvc = hdi->priv;
- sdi = cb_data;
- devc = sdi->priv;
- /* Always handle pending libusb events. */
- tv.tv_sec = tv.tv_usec = 0;
- libusb_handle_events_timeout(drvc->usb_context, &tv);
-
- ctx = cb_data;
- /* TODO: ugh */
- if (devc->dev_state == NEW_CAPTURE) {
- if (dso_capture_start(devc) != SR_OK)
- return TRUE;
- if (dso_enable_trigger(devc) != SR_OK)
- return TRUE;
-// if (dso_force_trigger(devc) != SR_OK)
-// return TRUE;
- sr_dbg("hantek-dso: successfully requested next chunk");
- devc->dev_state = CAPTURE;
- return TRUE;
- }
- if (devc->dev_state != CAPTURE)
- return TRUE;
-
- if ((dso_get_capturestate(devc, &capturestate, &trigger_offset)) != SR_OK)
- return TRUE;
-
- sr_dbg("hantek-dso: capturestate %d", capturestate);
- sr_dbg("hantek-dso: trigger offset 0x%.6x", trigger_offset);
- switch (capturestate) {
- case CAPTURE_EMPTY:
- if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) {
- devc->capture_empty_count = 0;
- if (dso_capture_start(devc) != SR_OK)
- break;
- if (dso_enable_trigger(devc) != SR_OK)
- break;
-// if (dso_force_trigger(devc) != SR_OK)
-// break;
- sr_dbg("hantek-dso: successfully requested next chunk");
- }
- break;
- case CAPTURE_FILLING:
- /* no data yet */
- break;
- case CAPTURE_READY_8BIT:
- /* Remember where in the captured frame the trigger is. */
- devc->trigger_offset = trigger_offset;
-
- num_probes = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
- devc->framebuf = g_try_malloc(devc->framesize * num_probes * 2);
- devc->samp_buffered = devc->samp_received = 0;
-
- /* Tell the scope to send us the first frame. */
- if (dso_get_channeldata(devc, receive_transfer) != SR_OK)
- break;
-
- /* Don't hit the state machine again until we're done fetching
- * the data we just told the scope to send.
- */
- devc->dev_state = FETCH_DATA;
-
- /* Tell the frontend a new frame is on the way. */
- packet.type = SR_DF_FRAME_BEGIN;
- sr_session_send(sdi, &packet);
- break;
- case CAPTURE_READY_9BIT:
- /* TODO */
- sr_err("not yet supported");
- break;
- case CAPTURE_TIMEOUT:
- /* Doesn't matter, we'll try again next time. */
- break;
- default:
- sr_dbg("unknown capture state");
- }
-
- return TRUE;
-}
-
-static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
- void *cb_data)
-{
- const struct libusb_pollfd **lupfd;
- struct sr_datafeed_packet packet;
- struct sr_datafeed_header header;
- struct sr_datafeed_meta_analog meta;
- struct drv_context *drvc;
- struct dev_context *devc;
- int i;
-
- drvc = hdi->priv;
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR;
-
- devc = sdi->priv;
- devc->cb_data = cb_data;
-
- if (dso_init(devc) != SR_OK)
- return SR_ERR;
-
- if (dso_capture_start(devc) != SR_OK)
- return SR_ERR;
-
- devc->dev_state = CAPTURE;
- lupfd = libusb_get_pollfds(drvc->usb_context);
- for (i = 0; lupfd[i]; i++)
- sr_source_add(lupfd[i]->fd, lupfd[i]->events, TICK, handle_event,
- ctx);
- free(lupfd);
-
- /* Send header packet to the session bus. */
- packet.type = SR_DF_HEADER;
- packet.payload = (unsigned char *)&header;
- header.feed_version = 1;
- gettimeofday(&header.starttime, NULL);
- sr_session_send(cb_data, &packet);
-
- /* Send metadata about the SR_DF_ANALOG packets to come. */
- packet.type = SR_DF_META_ANALOG;
- packet.payload = &meta;
- meta.num_probes = NUM_PROBES;
- sr_session_send(cb_data, &packet);
-
- return SR_OK;
-}
-
-/* TODO: doesn't really cancel pending transfers so they might come in after
- * SR_DF_END is sent.
- */
-static int hw_dev_acquisition_stop(const struct sr_dev_inst *sdi,
- void *cb_data)
-{
- struct dev_context *devc;
-
- (void)cb_data;
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR;
-
- ctx = sdi->priv;
- ctx->dev_state = IDLE;
-
- packet.type = SR_DF_END;
- sr_session_send(cb_data, &packet);
-
- return SR_OK;
-}
-
-SR_PRIV struct sr_dev_driver hantek_dso_driver_info = {
- .name = "hantek-dso",
- .longname = "Hantek DSO",
- .api_version = 1,
- .init = hw_init,
- .cleanup = hw_cleanup,
- .scan = hw_scan,
- .dev_open = hw_dev_open,
- .dev_close = hw_dev_close,
- .info_get = hw_info_get,
- .dev_config_set = hw_dev_config_set,
- .dev_acquisition_start = hw_dev_acquisition_start,
- .dev_acquisition_stop = hw_dev_acquisition_stop,
- .priv = NULL,
-};
projects / libsigrok.git / blobdiff