X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=hardware%2Fhantek-dso%2Fapi.c;h=2b039ed22b60e32e499141fbb45fdf29e573a3ff;hb=HEAD;hp=60c913146f58b55b2c03096df2f3fa38b32c728b;hpb=3ffb6964a1585b5f6ffa0747c089a1cd557e4feb;p=libsigrok.git diff --git a/hardware/hantek-dso/api.c b/hardware/hantek-dso/api.c deleted file mode 100644 index 60c91314..00000000 --- a/hardware/hantek-dso/api.c +++ /dev/null @@ -1,871 +0,0 @@ -/* - * This file is part of the sigrok project. - * - * Copyright (C) 2012 Bert Vermeulen - * - * 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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#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 libusb_context *usb_context = NULL; -SR_PRIV struct sr_dev_driver hantek_dso_driver_info; -static struct sr_dev_driver *hdi = &hantek_dso_driver_info; - -static struct sr_dev_inst *dso_dev_new(int index, const struct dso_profile *prof) -{ - struct sr_dev_inst *sdi; - struct context *ctx; - - sdi = sr_dev_inst_new(index, SR_ST_INITIALIZING, - prof->vendor, prof->model, NULL); - if (!sdi) - return NULL; - sdi->driver = hdi; - - if (!(ctx = g_try_malloc0(sizeof(struct context)))) { - sr_err("hantek-dso: ctx malloc failed"); - return NULL; - } - ctx->profile = prof; - ctx->dev_state = IDLE; - ctx->timebase = DEFAULT_TIMEBASE; - ctx->ch1_enabled = TRUE; - ctx->ch2_enabled = TRUE; - ctx->voltage_ch1 = DEFAULT_VOLTAGE; - ctx->voltage_ch2 = DEFAULT_VOLTAGE; - ctx->coupling_ch1 = DEFAULT_COUPLING; - ctx->coupling_ch2 = DEFAULT_COUPLING; - ctx->voffset_ch1 = DEFAULT_VERT_OFFSET; - ctx->voffset_ch2 = DEFAULT_VERT_OFFSET; - ctx->voffset_trigger = DEFAULT_VERT_TRIGGERPOS; - ctx->framesize = DEFAULT_FRAMESIZE; - ctx->triggerslope = SLOPE_POSITIVE; - ctx->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE); - ctx->triggerposition = DEFAULT_HORIZ_TRIGGERPOS; - sdi->priv = ctx; - hdi->instances = g_slist_append(hdi->instances, sdi); - - return sdi; -} - -static int configure_probes(struct context *ctx, const GSList *probes) -{ - const struct sr_probe *probe; - const GSList *l; - - ctx->ch1_enabled = ctx->ch2_enabled = FALSE; - for (l = probes; l; l = l->next) { - probe = (struct sr_probe *)l->data; - if (probe->index == 1) - ctx->ch1_enabled = probe->enabled; - else if (probe->index == 2) - ctx->ch2_enabled = probe->enabled; - } - - return SR_OK; -} - -/* Properly close and free all devices. */ -static void clear_instances(void) -{ - struct sr_dev_inst *sdi; - struct context *ctx; - GSList *l; - - for (l = hdi->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 (!(ctx = 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(ctx->usb); - g_free(ctx->triggersource); - - sr_dev_inst_free(sdi); - } - - g_slist_free(hdi->instances); - hdi->instances = NULL; - -} - -static int hw_init(void) -{ - - if (libusb_init(&usb_context) != 0) { - sr_err("hantek-dso: Failed to initialize USB."); - return SR_ERR; - } - - return SR_OK; -} - -static GSList *hw_scan(GSList *options) -{ - struct sr_dev_inst *sdi; - const struct dso_profile *prof; - struct context *ctx; - GSList *devices; - struct libusb_device_descriptor des; - libusb_device **devlist; - int devcnt, ret, i, j; - - (void)options; - devcnt = 0; - devices = 0; - hdi->instances = NULL; - - clear_instances(); - - /* Find all Hantek DSO devices and upload firmware to all of them. */ - libusb_get_device_list(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); - ctx = sdi->priv; - if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION, - prof->firmware) == SR_OK) - /* Remember when the firmware on this device was updated */ - ctx->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. */ - ctx->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); - ctx = sdi->priv; - ctx->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 context *ctx; - int64_t timediff_us, timediff_ms; - int err; - - ctx = sdi->priv; - - /* - * if the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS - * for the FX2 to renumerate - */ - err = SR_ERR; - if (ctx->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() - ctx->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(ctx->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) -{ - - clear_instances(); - - if (usb_context) - libusb_exit(usb_context); - 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; - - switch (info_id) { - case SR_DI_INST: - *data = sdi; - break; - 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_status_get(int dev_index) -{ - struct sr_dev_inst *sdi; - - if (!(sdi = sr_dev_inst_get(hdi->instances, dev_index))) - return SR_ST_NOT_FOUND; - - return sdi->status; -} - -static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, - const void *value) -{ - struct context *ctx; - 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; - ctx = sdi->priv; - switch (hwcap) { - case SR_HWCAP_LIMIT_FRAMES: - ctx->limit_frames = *(const uint64_t *)value; - break; - case SR_HWCAP_PROBECONFIG: - ret = configure_probes(ctx, (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; - ctx->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 - ctx->triggerposition = tmp_float; - break; - case SR_HWCAP_BUFFERSIZE: - tmp_u64 = *(const int *)value; - for (i = 0; buffersizes[i]; i++) { - if (buffersizes[i] == tmp_u64) { - ctx->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) { - ctx->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])) { - ctx->triggersource = g_strdup(value); - break; - } - } - if (trigger_sources[i] == 0) - ret = SR_ERR_ARG; - break; - case SR_HWCAP_FILTER: - ctx->filter_ch1 = ctx->filter_ch2 = ctx->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")) - ctx->filter_ch1 = TRUE; - else if (!strcmp(targets[i], "CH2")) - ctx->filter_ch2 = TRUE; - else if (!strcmp(targets[i], "TRIGGER")) - ctx->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) { - ctx->voltage_ch1 = i; - ctx->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])) { - ctx->coupling_ch1 = i; - ctx->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 context *ctx, 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 = (ctx->ch1_enabled && ctx->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 (ctx->ch1_enabled) { - range = ((float)vdivs[ctx->voltage_ch1].p / vdivs[ctx->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 (ctx->ch2_enabled) { - range = ((float)vdivs[ctx->voltage_ch2].p / vdivs[ctx->voltage_ch2].q) * 8; - ch2 = range / 255 * *(buf + i * 2); - ch2 -= range / 2; - analog.data[data_offset++] = ch2; - } - } - sr_session_send(ctx->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 context *ctx; - int num_samples, pre; - - ctx = 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", ctx->samp_received + 1, - ctx->samp_received + num_samples, ctx->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 (ctx->samp_received < ctx->trigger_offset) { - /* Trigger point not yet reached. */ - if (ctx->samp_received + num_samples < ctx->trigger_offset) { - /* The entire chunk is before the trigger point. */ - memcpy(ctx->framebuf + ctx->samp_buffered * 2, - transfer->buffer, num_samples * 2); - ctx->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 = ctx->trigger_offset - ctx->samp_received; - memcpy(ctx->framebuf + ctx->samp_buffered * 2, - transfer->buffer, pre * 2); - ctx->samp_buffered += pre; - - /* The rest of this chunk starts with the trigger point. */ - sr_dbg("hantek-dso: reached trigger point, %d samples buffered", - ctx->samp_buffered); - - /* Avoid the corner case where the chunk ended at - * exactly the trigger point. */ - if (num_samples > pre) - send_chunk(ctx, transfer->buffer + pre * 2, - num_samples - pre); - } - } else { - /* Already past the trigger point, just send it all out. */ - send_chunk(ctx, transfer->buffer, - num_samples); - } - - ctx->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 (ctx->samp_received >= ctx->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", - ctx->samp_buffered); - send_chunk(ctx, ctx->framebuf, ctx->samp_buffered); - - /* Mark the end of this frame. */ - packet.type = SR_DF_FRAME_END; - sr_session_send(ctx->cb_data, &packet); - - if (ctx->limit_frames && ++ctx->num_frames == ctx->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 { - ctx->dev_state = NEW_CAPTURE; - } - } - -} - -static int handle_event(int fd, int revents, void *cb_data) -{ - struct sr_datafeed_packet packet; - struct timeval tv; - struct context *ctx; - int num_probes; - uint32_t trigger_offset; - uint8_t capturestate; - - /* Avoid compiler warnings. */ - (void)fd; - (void)revents; - - /* Always handle pending libusb events. */ - tv.tv_sec = tv.tv_usec = 0; - libusb_handle_events_timeout(usb_context, &tv); - - ctx = cb_data; - /* TODO: ugh */ - if (ctx->dev_state == NEW_CAPTURE) { - if (dso_capture_start(ctx) != SR_OK) - return TRUE; - if (dso_enable_trigger(ctx) != SR_OK) - return TRUE; -// if (dso_force_trigger(ctx) != SR_OK) -// return TRUE; - sr_dbg("hantek-dso: successfully requested next chunk"); - ctx->dev_state = CAPTURE; - return TRUE; - } - if (ctx->dev_state != CAPTURE) - return TRUE; - - if ((dso_get_capturestate(ctx, &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 (++ctx->capture_empty_count >= MAX_CAPTURE_EMPTY) { - ctx->capture_empty_count = 0; - if (dso_capture_start(ctx) != SR_OK) - break; - if (dso_enable_trigger(ctx) != SR_OK) - break; -// if (dso_force_trigger(ctx) != 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. */ - ctx->trigger_offset = trigger_offset; - - num_probes = (ctx->ch1_enabled && ctx->ch2_enabled) ? 2 : 1; - ctx->framebuf = g_try_malloc(ctx->framesize * num_probes * 2); - ctx->samp_buffered = ctx->samp_received = 0; - - /* Tell the scope to send us the first frame. */ - if (dso_get_channeldata(ctx, 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. - */ - ctx->dev_state = FETCH_DATA; - - /* Tell the frontend a new frame is on the way. */ - packet.type = SR_DF_FRAME_BEGIN; - sr_session_send(cb_data, &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 context *ctx; - int i; - - if (sdi->status != SR_ST_ACTIVE) - return SR_ERR; - - ctx = sdi->priv; - ctx->cb_data = cb_data; - - if (dso_init(ctx) != SR_OK) - return SR_ERR; - - if (dso_capture_start(ctx) != SR_OK) - return SR_ERR; - - ctx->dev_state = CAPTURE; - lupfd = libusb_get_pollfds(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 sr_datafeed_packet packet; - struct context *ctx; - - 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_status_get = hw_dev_status_get, - .dev_config_set = hw_dev_config_set, - .dev_acquisition_start = hw_dev_acquisition_start, - .dev_acquisition_stop = hw_dev_acquisition_stop, - .instances = NULL, -};