+++ /dev/null
-/*
- * This file is part of the libsigrok 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 "dso.h"
-
-/* Max time in ms before we want to check on USB events */
-/* TODO tune this properly */
-#define TICK 1
-
-#define NUM_TIMEBASE 10
-#define NUM_VDIV 8
-
-static const int32_t scanopts[] = {
- SR_CONF_CONN,
-};
-
-static const int32_t devopts[] = {
- SR_CONF_OSCILLOSCOPE,
- SR_CONF_LIMIT_FRAMES,
- SR_CONF_CONTINUOUS,
- SR_CONF_TIMEBASE,
- SR_CONF_BUFFERSIZE,
- SR_CONF_TRIGGER_SOURCE,
- SR_CONF_TRIGGER_SLOPE,
- SR_CONF_HORIZ_TRIGGERPOS,
- SR_CONF_FILTER,
- SR_CONF_VDIV,
- SR_CONF_COUPLING,
- SR_CONF_NUM_TIMEBASE,
- SR_CONF_NUM_VDIV,
-};
-
-static const char *channel_names[] = {
- "CH1", "CH2",
- NULL,
-};
-
-static const uint64_t buffersizes_32k[] = {
- 10240, 32768,
-};
-static const uint64_t buffersizes_512k[] = {
- 10240, 524288,
-};
-static const uint64_t buffersizes_14k[] = {
- 10240, 14336,
-};
-
-static const struct dso_profile dev_profiles[] = {
- { 0x04b4, 0x2090, 0x04b5, 0x2090,
- "Hantek", "DSO-2090",
- buffersizes_32k,
- FIRMWARE_DIR "/hantek-dso-2090.fw" },
- { 0x04b4, 0x2150, 0x04b5, 0x2150,
- "Hantek", "DSO-2150",
- buffersizes_32k,
- FIRMWARE_DIR "/hantek-dso-2150.fw" },
- { 0x04b4, 0x2250, 0x04b5, 0x2250,
- "Hantek", "DSO-2250",
- buffersizes_512k,
- FIRMWARE_DIR "/hantek-dso-2250.fw" },
- { 0x04b4, 0x5200, 0x04b5, 0x5200,
- "Hantek", "DSO-5200",
- buffersizes_14k,
- FIRMWARE_DIR "/hantek-dso-5200.fw" },
- { 0x04b4, 0x520a, 0x04b5, 0x520a,
- "Hantek", "DSO-5200A",
- buffersizes_512k,
- FIRMWARE_DIR "/hantek-dso-5200A.fw" },
- { 0, 0, 0, 0, 0, 0, 0, 0 },
-};
-
-static const uint64_t timebases[][2] = {
- /* 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 },
-};
-
-static const uint64_t vdivs[][2] = {
- /* millivolts */
- { 10, 1000 },
- { 20, 1000 },
- { 50, 1000 },
- { 100, 1000 },
- { 200, 1000 },
- { 500, 1000 },
- /* volts */
- { 1, 1 },
- { 2, 1 },
- { 5, 1 },
-};
-
-static const char *trigger_sources[] = {
- "CH1",
- "CH2",
- "EXT",
- /* TODO: forced */
-};
-
-static const char *filter_targets[] = {
- "CH1",
- "CH2",
- /* TODO: "TRIGGER", */
-};
-
-static const char *coupling[] = {
- "AC",
- "DC",
- "GND",
-};
-
-SR_PRIV struct sr_dev_driver hantek_dso_driver_info;
-static struct sr_dev_driver *di = &hantek_dso_driver_info;
-
-static int dev_acquisition_stop(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_channel *ch;
- 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 = di;
-
- /*
- * Add only the real channels -- EXT isn't a source of data, only
- * a trigger source internal to the device.
- */
- for (i = 0; channel_names[i]; i++) {
- if (!(ch = sr_channel_new(i, SR_CHANNEL_ANALOG, TRUE,
- channel_names[i])))
- return NULL;
- sdi->channels = g_slist_append(sdi->channels, ch);
- }
-
- if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
- sr_err("Device context 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 = di->priv;
- drvc->instances = g_slist_append(drvc->instances, sdi);
-
- return sdi;
-}
-
-static int configure_channels(const struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- struct sr_channel *ch;
- const GSList *l;
- int p;
-
- devc = sdi->priv;
-
- g_slist_free(devc->enabled_channels);
- devc->ch1_enabled = devc->ch2_enabled = FALSE;
- for (l = sdi->channels, p = 0; l; l = l->next, p++) {
- ch = l->data;
- if (p == 0)
- devc->ch1_enabled = ch->enabled;
- else
- devc->ch2_enabled = ch->enabled;
- if (ch->enabled)
- devc->enabled_channels = g_slist_append(devc->enabled_channels, ch);
- }
-
- return SR_OK;
-}
-
-static void clear_dev_context(void *priv)
-{
- struct dev_context *devc;
-
- devc = priv;
- g_free(devc->triggersource);
- g_slist_free(devc->enabled_channels);
-
-}
-
-static int dev_clear(void)
-{
- return std_dev_clear(di, clear_dev_context);
-}
-
-static int init(struct sr_context *sr_ctx)
-{
- return std_init(sr_ctx, di, LOG_PREFIX);
-}
-
-static GSList *scan(GSList *options)
-{
- struct drv_context *drvc;
- struct dev_context *devc;
- struct sr_dev_inst *sdi;
- struct sr_usb_dev_inst *usb;
- struct sr_config *src;
- const struct dso_profile *prof;
- GSList *l, *devices, *conn_devices;
- struct libusb_device_descriptor des;
- libusb_device **devlist;
- int devcnt, ret, i, j;
- const char *conn;
-
- drvc = di->priv;
-
- devcnt = 0;
- devices = 0;
-
- conn = NULL;
- for (l = options; l; l = l->next) {
- src = l->data;
- if (src->key == SR_CONF_CONN) {
- conn = g_variant_get_string(src->data, NULL);
- break;
- }
- }
- if (conn)
- conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
- else
- conn_devices = NULL;
-
- /* Find all Hantek DSO devices and upload firmware to all of them. */
- libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
- for (i = 0; devlist[i]; i++) {
- if (conn) {
- usb = NULL;
- for (l = conn_devices; l; l = l->next) {
- usb = l->data;
- if (usb->bus == libusb_get_bus_number(devlist[i])
- && usb->address == libusb_get_device_address(devlist[i]))
- break;
- }
- if (!l)
- /* This device matched none of the ones that
- * matched the conn specification. */
- continue;
- }
-
- if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
- sr_err("Failed to get device descriptor: %s.",
- libusb_error_name(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("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("Firmware upload failed for "
- "device %d.", devcnt);
- /* Dummy USB address of 0xff will get overwritten later. */
- sdi->conn = 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("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;
- sdi->inst_type = SR_INST_USB;
- sdi->conn = 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 GSList *dev_list(void)
-{
- return ((struct drv_context *)(di->priv))->instances;
-}
-
-static int dev_open(struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- struct sr_usb_dev_inst *usb;
- int64_t timediff_us, timediff_ms;
- int err;
-
- devc = sdi->priv;
- usb = sdi->conn;
-
- /*
- * 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("Waiting for device to reset.");
- /* Takes >= 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("Waited %" PRIi64 " ms.", timediff_ms);
- }
- sr_info("Device came back after %d ms.", timediff_ms);
- } else {
- err = dso_open(sdi);
- }
-
- if (err != SR_OK) {
- sr_err("Unable to open device.");
- return SR_ERR;
- }
-
- err = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
- if (err != 0) {
- sr_err("Unable to claim interface: %s.",
- libusb_error_name(err));
- return SR_ERR;
- }
-
- return SR_OK;
-}
-
-static int dev_close(struct sr_dev_inst *sdi)
-{
- dso_close(sdi);
-
- return SR_OK;
-}
-
-static int cleanup(void)
-{
- return dev_clear();
-}
-
-static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi,
- const struct sr_channel_group *cg)
-{
- struct sr_usb_dev_inst *usb;
- char str[128];
-
- (void)cg;
-
- switch (id) {
- case SR_CONF_CONN:
- if (!sdi || !sdi->conn)
- return SR_ERR_ARG;
- usb = sdi->conn;
- if (usb->address == 255)
- /* Device still needs to re-enumerate after firmware
- * upload, so we don't know its (future) address. */
- return SR_ERR;
- snprintf(str, 128, "%d.%d", usb->bus, usb->address);
- *data = g_variant_new_string(str);
- break;
- case SR_CONF_NUM_TIMEBASE:
- *data = g_variant_new_int32(NUM_TIMEBASE);
- break;
- case SR_CONF_NUM_VDIV:
- *data = g_variant_new_int32(NUM_VDIV);
- break;
- default:
- return SR_ERR_NA;
- }
-
- return SR_OK;
-}
-
-static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi,
- const struct sr_channel_group *cg)
-{
- struct dev_context *devc;
- double tmp_double;
- uint64_t tmp_u64, p, q;
- int tmp_int, ret;
- unsigned int i;
- const char *tmp_str;
- char **targets;
-
- (void)cg;
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
-
- ret = SR_OK;
- devc = sdi->priv;
- switch (id) {
- case SR_CONF_LIMIT_FRAMES:
- devc->limit_frames = g_variant_get_uint64(data);
- break;
- case SR_CONF_TRIGGER_SLOPE:
- tmp_str = g_variant_get_string(data, NULL);
- if (!tmp_str || !(tmp_str[0] == 'f' || tmp_str[0] == 'r'))
- return SR_ERR_ARG;
- devc->triggerslope = (tmp_str[0] == 'r')
- ? SLOPE_POSITIVE : SLOPE_NEGATIVE;
- break;
- case SR_CONF_HORIZ_TRIGGERPOS:
- tmp_double = g_variant_get_double(data);
- if (tmp_double < 0.0 || tmp_double > 1.0) {
- sr_err("Trigger position should be between 0.0 and 1.0.");
- ret = SR_ERR_ARG;
- } else
- devc->triggerposition = tmp_double;
- break;
- case SR_CONF_BUFFERSIZE:
- tmp_u64 = g_variant_get_uint64(data);
- for (i = 0; i < 2; i++) {
- if (devc->profile->buffersizes[i] == tmp_u64) {
- devc->framesize = tmp_u64;
- break;
- }
- }
- if (i == 2)
- ret = SR_ERR_ARG;
- break;
- case SR_CONF_TIMEBASE:
- g_variant_get(data, "(tt)", &p, &q);
- tmp_int = -1;
- for (i = 0; i < ARRAY_SIZE(timebases); i++) {
- if (timebases[i][0] == p && timebases[i][1] == q) {
- tmp_int = i;
- break;
- }
- }
- if (tmp_int >= 0)
- devc->timebase = tmp_int;
- else
- ret = SR_ERR_ARG;
- break;
- case SR_CONF_TRIGGER_SOURCE:
- tmp_str = g_variant_get_string(data, NULL);
- for (i = 0; trigger_sources[i]; i++) {
- if (!strcmp(tmp_str, trigger_sources[i])) {
- devc->triggersource = g_strdup(tmp_str);
- break;
- }
- }
- if (trigger_sources[i] == 0)
- ret = SR_ERR_ARG;
- break;
- case SR_CONF_FILTER:
- tmp_str = g_variant_get_string(data, NULL);
- devc->filter_ch1 = devc->filter_ch2 = devc->filter_trigger = 0;
- targets = g_strsplit(tmp_str, ",", 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_CONF_VDIV:
- /* TODO: Not supporting vdiv per channel yet. */
- g_variant_get(data, "(tt)", &p, &q);
- tmp_int = -1;
- for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
- if (vdivs[i][0] == p && vdivs[i][1] == q) {
- tmp_int = i;
- break;
- }
- }
- if (tmp_int >= 0) {
- devc->voltage_ch1 = tmp_int;
- devc->voltage_ch2 = tmp_int;
- } else
- ret = SR_ERR_ARG;
- break;
- case SR_CONF_COUPLING:
- tmp_str = g_variant_get_string(data, NULL);
- /* TODO: Not supporting coupling per channel yet. */
- for (i = 0; coupling[i]; i++) {
- if (!strcmp(tmp_str, coupling[i])) {
- devc->coupling_ch1 = i;
- devc->coupling_ch2 = i;
- break;
- }
- }
- if (coupling[i] == 0)
- ret = SR_ERR_ARG;
- break;
- default:
- ret = SR_ERR_NA;
- break;
- }
-
- return ret;
-}
-
-static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
- const struct sr_channel_group *cg)
-{
- struct dev_context *devc;
- GVariant *tuple, *rational[2];
- GVariantBuilder gvb;
- unsigned int i;
-
- (void)cg;
-
- switch (key) {
- case SR_CONF_SCAN_OPTIONS:
- *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
- scanopts, ARRAY_SIZE(scanopts), sizeof(int32_t));
- break;
- case SR_CONF_DEVICE_OPTIONS:
- *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
- devopts, ARRAY_SIZE(devopts), sizeof(int32_t));
- break;
- case SR_CONF_BUFFERSIZE:
- if (!sdi)
- return SR_ERR_ARG;
- devc = sdi->priv;
- *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64,
- devc->profile->buffersizes, 2, sizeof(uint64_t));
- break;
- case SR_CONF_COUPLING:
- *data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling));
- break;
- case SR_CONF_VDIV:
- g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
- for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
- rational[0] = g_variant_new_uint64(vdivs[i][0]);
- rational[1] = g_variant_new_uint64(vdivs[i][1]);
- tuple = g_variant_new_tuple(rational, 2);
- g_variant_builder_add_value(&gvb, tuple);
- }
- *data = g_variant_builder_end(&gvb);
- break;
- case SR_CONF_FILTER:
- *data = g_variant_new_strv(filter_targets,
- ARRAY_SIZE(filter_targets));
- break;
- case SR_CONF_TIMEBASE:
- g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
- for (i = 0; i < ARRAY_SIZE(timebases); i++) {
- rational[0] = g_variant_new_uint64(timebases[i][0]);
- rational[1] = g_variant_new_uint64(timebases[i][1]);
- tuple = g_variant_new_tuple(rational, 2);
- g_variant_builder_add_value(&gvb, tuple);
- }
- *data = g_variant_builder_end(&gvb);
- break;
- case SR_CONF_TRIGGER_SOURCE:
- *data = g_variant_new_strv(trigger_sources,
- ARRAY_SIZE(trigger_sources));
- break;
- default:
- return SR_ERR_NA;
- }
-
- return SR_OK;
-}
-
-static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf,
- int num_samples)
-{
- struct sr_datafeed_packet packet;
- struct sr_datafeed_analog analog;
- struct dev_context *devc;
- float ch1, ch2, range;
- int num_channels, data_offset, i;
-
- devc = sdi->priv;
- num_channels = (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.channels = devc->enabled_channels;
- analog.num_samples = num_samples;
- analog.mq = SR_MQ_VOLTAGE;
- analog.unit = SR_UNIT_VOLT;
- /* TODO: Check malloc return value. */
- analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_channels);
- 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
- * DSO-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 DSO-5xxx series 9-bit samples. */
- if (devc->ch1_enabled) {
- range = ((float)vdivs[devc->voltage_ch1][0] / vdivs[devc->voltage_ch1][1]) * 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][0] / vdivs[devc->voltage_ch2][1]) * 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 to chuck the incoming data onto
- * the libsigrok session bus.
- */
-static void receive_transfer(struct libusb_transfer *transfer)
-{
- struct sr_datafeed_packet packet;
- struct sr_dev_inst *sdi;
- struct dev_context *devc;
- int num_samples, pre;
-
- sdi = transfer->user_data;
- devc = sdi->priv;
- sr_spew("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_spew("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("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(sdi, transfer->buffer + pre * 2,
- num_samples - pre);
- }
- } else {
- /* Already past the trigger point, just send it all out. */
- send_chunk(sdi, 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("End of frame, sending %d pre-trigger buffered samples.",
- devc->samp_buffered);
- send_chunk(sdi, 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 */
- devc->dev_state = STOPPING;
- } else {
- devc->dev_state = NEW_CAPTURE;
- }
- }
-}
-
-static int handle_event(int fd, int revents, void *cb_data)
-{
- const struct sr_dev_inst *sdi;
- struct sr_datafeed_packet packet;
- struct timeval tv;
- struct dev_context *devc;
- struct drv_context *drvc = di->priv;
- int num_channels;
- uint32_t trigger_offset;
- uint8_t capturestate;
-
- (void)fd;
- (void)revents;
-
- sdi = cb_data;
- devc = sdi->priv;
- if (devc->dev_state == STOPPING) {
- /* We've been told to wind up the acquisition. */
- sr_dbg("Stopping acquisition.");
- /*
- * TODO: Doesn't really cancel pending transfers so they might
- * come in after SR_DF_END is sent.
- */
- usb_source_remove(sdi->session, drvc->sr_ctx);
-
- packet.type = SR_DF_END;
- sr_session_send(sdi, &packet);
-
- devc->dev_state = IDLE;
-
- return TRUE;
- }
-
- /* Always handle pending libusb events. */
- tv.tv_sec = tv.tv_usec = 0;
- libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
-
- /* TODO: ugh */
- if (devc->dev_state == NEW_CAPTURE) {
- if (dso_capture_start(sdi) != SR_OK)
- return TRUE;
- if (dso_enable_trigger(sdi) != SR_OK)
- return TRUE;
-// if (dso_force_trigger(sdi) != SR_OK)
-// return TRUE;
- sr_dbg("Successfully requested next chunk.");
- devc->dev_state = CAPTURE;
- return TRUE;
- }
- if (devc->dev_state != CAPTURE)
- return TRUE;
-
- if ((dso_get_capturestate(sdi, &capturestate, &trigger_offset)) != SR_OK)
- return TRUE;
-
- sr_dbg("Capturestate %d.", capturestate);
- sr_dbg("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(sdi) != SR_OK)
- break;
- if (dso_enable_trigger(sdi) != SR_OK)
- break;
-// if (dso_force_trigger(sdi) != SR_OK)
-// break;
- sr_dbg("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_channels = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
- /* TODO: Check malloc return value. */
- devc->framebuf = g_try_malloc(devc->framesize * num_channels * 2);
- devc->samp_buffered = devc->samp_received = 0;
-
- /* Tell the scope to send us the first frame. */
- if (dso_get_channeldata(sdi, 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: %d.", capturestate);
- break;
- }
-
- return TRUE;
-}
-
-static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
-{
- struct dev_context *devc;
- struct drv_context *drvc = di->priv;
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
-
- devc = sdi->priv;
- devc->cb_data = cb_data;
-
- if (configure_channels(sdi) != SR_OK) {
- sr_err("Failed to configure channels.");
- return SR_ERR;
- }
-
- if (dso_init(sdi) != SR_OK)
- return SR_ERR;
-
- if (dso_capture_start(sdi) != SR_OK)
- return SR_ERR;
-
- devc->dev_state = CAPTURE;
- usb_source_add(sdi->session, drvc->sr_ctx, TICK, handle_event, (void *)sdi);
-
- /* Send header packet to the session bus. */
- std_session_send_df_header(cb_data, LOG_PREFIX);
-
- return SR_OK;
-}
-
-static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
-{
- struct dev_context *devc;
-
- (void)cb_data;
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR;
-
- devc = sdi->priv;
- devc->dev_state = STOPPING;
-
- return SR_OK;
-}
-
-SR_PRIV struct sr_dev_driver hantek_dso_driver_info = {
- .name = "hantek-dso",
- .longname = "Hantek DSO",
- .api_version = 1,
- .init = init,
- .cleanup = cleanup,
- .scan = scan,
- .dev_list = dev_list,
- .dev_clear = dev_clear,
- .config_get = config_get,
- .config_set = config_set,
- .config_list = config_list,
- .dev_open = dev_open,
- .dev_close = dev_close,
- .dev_acquisition_start = dev_acquisition_start,
- .dev_acquisition_stop = dev_acquisition_stop,
- .priv = NULL,
-};
projects / libsigrok.git / blobdiff