#include <inttypes.h>
#include <glib.h>
#include <libusb.h>
-#include "sigrok.h"
-#include "sigrok-internal.h"
-#include "config.h"
+#include "libsigrok.h"
+#include "libsigrok-internal.h"
#include "dso.h"
-/* FIXME: Temporary build fix, this will be removed later. */
-#define GTV_TO_MSEC(gtv) (gtv.tv_sec * 1000 + gtv.tv_usec / 1000)
-
-/* Max time in ms before we want to check on events */
-#define TICK 1
+/* 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,
};
static const struct dso_profile dev_profiles[] = {
- { 0x04b4, 0x2090,
- 0x04b5, 0x2090,
+ { 0x04b4, 0x2090, 0x04b5, 0x2090,
"Hantek", "DSO-2090",
- NULL, 2,
- FIRMWARE_DIR "/hantek-dso-2090.fw" },
- { 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+ 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[] = {
"CH1",
"CH2",
"EXT",
+ /* TODO: forced */
NULL,
};
NULL,
};
-SR_PRIV libusb_context *usb_context = NULL;
-SR_PRIV GSList *dev_insts = 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(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 context *ctx;
+ 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, prof->model_version);
+ 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 (!(ctx = g_try_malloc0(sizeof(struct context)))) {
- sr_err("hantek-dso: ctx malloc failed");
+ if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
+ sr_err("Device context 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;
- dev_insts = g_slist_append(dev_insts, sdi);
+
+ 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 context *ctx, const GSList *probes)
+static int configure_probes(const struct sr_dev_inst *sdi)
{
+ struct dev_context *devc;
const struct sr_probe *probe;
const GSList *l;
- ctx->ch1_enabled = ctx->ch2_enabled = FALSE;
- for (l = probes; l; l = l->next) {
+ devc = sdi->priv;
+
+ devc->ch1_enabled = devc->ch2_enabled = FALSE;
+ for (l = sdi->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;
+ if (probe->index == 0)
+ devc->ch1_enabled = probe->enabled;
+ else if (probe->index == 1)
+ devc->ch2_enabled = probe->enabled;
}
return SR_OK;
}
-static int hw_init(const char *devinfo)
+/* Properly close and free all devices. */
+static int 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("%s: sdi was NULL, continuing", __func__);
+ continue;
+ }
+ if (!(devc = sdi->priv)) {
+ /* Log error, but continue cleaning up the rest. */
+ sr_err("%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;
+
+ return SR_OK;
+}
+
+static int hw_init(struct sr_context *sr_ctx)
+{
+ struct drv_context *drvc;
+
+ if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
+ sr_err("Driver context malloc failed.");
+ return SR_ERR_MALLOC;
+ }
+
+ drvc->sr_ctx = sr_ctx;
+ hdi->priv = drvc;
+
+ return SR_OK;
+}
+
+static GSList *hw_scan(GSList *options)
{
struct sr_dev_inst *sdi;
- struct libusb_device_descriptor des;
const struct dso_profile *prof;
- struct context *ctx;
+ struct drv_context *drvc;
+ struct dev_context *devc;
+ GSList *devices;
+ struct libusb_device_descriptor des;
libusb_device **devlist;
- int err, devcnt, i, j;
+ int devcnt, ret, i, j;
- /* Avoid compiler warnings. */
- (void)devinfo;
+ (void)options;
- if (libusb_init(&usb_context) != 0) {
- sr_err("hantek-dso: Failed to initialize USB.");
- return 0;
- }
+ devcnt = 0;
+ devices = 0;
+ drvc = hdi->priv;
+ drvc->instances = NULL;
+
+ clear_instances();
/* Find all Hantek DSO devices and upload firmware to all of them. */
- devcnt = 0;
- libusb_get_device_list(usb_context, &devlist);
+ 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("hantek-dso: failed to get device descriptor: %d", err);
+ if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
+ sr_err("Failed to get device descriptor: %s.",
+ libusb_error_name(ret));
continue;
}
&& 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);
+ sr_dbg("Found a %s %s.", prof->vendor, prof->model);
sdi = dso_dev_new(devcnt, prof);
- ctx = sdi->priv;
+ 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 */
- g_get_current_time(&ctx->fw_updated);
+ devc->fw_updated = g_get_monotonic_time();
else
- sr_err("hantek-dso: firmware upload failed for "
- "device %d", devcnt);
+ sr_err("Firmware upload failed for "
+ "device %d.", devcnt);
/* Dummy USB address of 0xff will get overwritten later. */
- ctx->usb = sr_usb_dev_inst_new(
+ devc->usb = sr_usb_dev_inst_new(
libusb_get_bus_number(devlist[i]), 0xff, NULL);
devcnt++;
break;
&& 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);
+ sr_dbg("Found a %s %s.", prof->vendor, prof->model);
sdi = dso_dev_new(devcnt, prof);
sdi->status = SR_ST_INACTIVE;
- ctx = sdi->priv;
- ctx->usb = sr_usb_dev_inst_new(
+ 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++;
}
libusb_free_device_list(devlist, 1);
- return devcnt;
+ return devices;
}
-static int hw_dev_open(int dev_index)
+static GSList *hw_dev_list(void)
{
- GTimeVal cur_time;
- struct sr_dev_inst *sdi;
- struct context *ctx;
- int timediff, err;
+ struct drv_context *drvc;
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
- return SR_ERR_ARG;
- ctx = sdi->priv;
+ drvc = hdi->priv;
+
+ return drvc->instances;
+}
+
+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
+ * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
+ * for the FX2 to renumerate.
*/
- err = 0;
- if (GTV_TO_MSEC(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 */
+ 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 = 0;
- while (timediff < MAX_RENUM_DELAY) {
- if ((err = dso_open(dev_index)) == SR_OK)
+ timediff_ms = 0;
+ while (timediff_ms < MAX_RENUM_DELAY_MS) {
+ if ((err = dso_open(sdi)) == SR_OK)
break;
g_usleep(100 * 1000);
- g_get_current_time(&cur_time);
- timediff = GTV_TO_MSEC(cur_time) - GTV_TO_MSEC(ctx->fw_updated);
+ timediff_us = g_get_monotonic_time() - devc->fw_updated;
+ timediff_ms = timediff_us / 1000;
+ sr_spew("Waited %" PRIi64 " ms.", timediff_ms);
}
- sr_info("hantek-dso: device came back after %d ms", timediff);
+ sr_info("Device came back after %d ms.", timediff_ms);
} else {
- err = dso_open(dev_index);
+ err = dso_open(sdi);
}
if (err != SR_OK) {
- sr_err("hantek-dso: unable to open device");
+ sr_err("Unable to open device.");
return SR_ERR;
}
- err = libusb_claim_interface(ctx->usb->devhdl, USB_INTERFACE);
+ err = libusb_claim_interface(devc->usb->devhdl, USB_INTERFACE);
if (err != 0) {
- sr_err("hantek-dso: Unable to claim interface: %d", err);
+ sr_err("Unable to claim interface: %s.",
+ libusb_error_name(err));
return SR_ERR;
}
return SR_OK;
}
-static int hw_dev_close(int dev_index)
+static int hw_dev_close(struct sr_dev_inst *sdi)
{
- struct sr_dev_inst *sdi;
-
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
- return SR_ERR_ARG;
-
dso_close(sdi);
return SR_OK;
static int hw_cleanup(void)
{
- GSList *l;
- struct sr_dev_inst *sdi;
- struct context *ctx;
+ struct drv_context *drvc;
- /* Properly close and free all devices. */
- for (l = dev_insts; 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(dev_insts);
- dev_insts = NULL;
+ if (!(drvc = hdi->priv))
+ return SR_OK;
- if (usb_context)
- libusb_exit(usb_context);
- usb_context = NULL;
+ clear_instances();
return SR_OK;
}
-static const void *hw_dev_info_get(int dev_index, int dev_info_id)
+static int hw_info_get(int info_id, const void **data,
+ const struct sr_dev_inst *sdi)
{
- struct sr_dev_inst *sdi;
- struct context *ctx;
- const void *info;
uint64_t tmp;
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
- return NULL;
- ctx = sdi->priv;
+ (void)sdi;
- info = NULL;
- switch (dev_info_id) {
- case SR_DI_INST:
- info = sdi;
+ switch (info_id) {
+ case SR_DI_HWCAPS:
+ *data = hwcaps;
break;
case SR_DI_NUM_PROBES:
- info = GINT_TO_POINTER(ctx->profile->num_probes);
+ *data = GINT_TO_POINTER(NUM_PROBES);
break;
case SR_DI_PROBE_NAMES:
- info = probe_names;
+ *data = probe_names;
break;
case SR_DI_BUFFERSIZES:
- info = buffersizes;
+ *data = buffersizes;
break;
case SR_DI_TIMEBASES:
- info = timebases;
+ *data = timebases;
break;
case SR_DI_TRIGGER_SOURCES:
- info = trigger_sources;
+ *data = trigger_sources;
break;
case SR_DI_FILTERS:
- info = filter_targets;
+ *data = filter_targets;
break;
case SR_DI_VDIVS:
- info = vdivs;
+ *data = vdivs;
break;
case SR_DI_COUPLING:
- info = coupling;
+ *data = coupling;
break;
/* TODO remove this */
case SR_DI_CUR_SAMPLERATE:
- info = &tmp;
+ *data = &tmp;
break;
+ default:
+ return SR_ERR_ARG;
}
- return info;
-}
-
-static int hw_dev_status_get(int dev_index)
-{
- struct sr_dev_inst *sdi;
-
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
- return SR_ST_NOT_FOUND;
-
- return sdi->status;
-}
-
-static const int *hw_hwcap_get_all(void)
-{
- return hwcaps;
+ return SR_OK;
}
-static int hw_dev_config_set(int dev_index, int hwcap, const void *value)
+static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
+ const void *value)
{
- struct sr_dev_inst *sdi;
- struct context *ctx;
+ struct dev_context *devc;
struct sr_rational tmp_rat;
float tmp_float;
uint64_t tmp_u64;
int ret, i;
char **targets;
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
- return SR_ERR;
-
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR;
ret = SR_OK;
- ctx = sdi->priv;
+ devc = 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);
+ devc->limit_frames = *(const uint64_t *)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;
+ 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");
+ sr_err("Trigger position should be between 0.0 and 1.0.");
ret = SR_ERR_ARG;
} else
- ctx->triggerposition = tmp_float;
+ 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) {
- ctx->framesize = tmp_u64;
+ devc->framesize = tmp_u64;
break;
}
}
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;
+ devc->timebase = i;
break;
}
}
case SR_HWCAP_TRIGGER_SOURCE:
for (i = 0; trigger_sources[i]; i++) {
if (!strcmp(value, trigger_sources[i])) {
- ctx->triggersource = g_strdup(value);
+ devc->triggersource = g_strdup(value);
break;
}
}
ret = SR_ERR_ARG;
break;
case SR_HWCAP_FILTER:
- ctx->filter_ch1 = ctx->filter_ch2 = ctx->filter_trigger = 0;
+ 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"))
- ctx->filter_ch1 = TRUE;
+ devc->filter_ch1 = TRUE;
else if (!strcmp(targets[i], "CH2"))
- ctx->filter_ch2 = TRUE;
+ devc->filter_ch2 = TRUE;
else if (!strcmp(targets[i], "TRIGGER"))
- ctx->filter_trigger = TRUE;
+ devc->filter_trigger = TRUE;
else {
- sr_err("invalid filter target %s", targets[i]);
+ 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 */
+ /* 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;
+ devc->voltage_ch1 = i;
+ devc->voltage_ch2 = i;
break;
}
}
ret = SR_ERR_ARG;
break;
case SR_HWCAP_COUPLING:
- /* TODO not supporting coupling per channel yet */
+ /* 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;
+ devc->coupling_ch1 = i;
+ devc->coupling_ch2 = i;
break;
}
}
break;
default:
ret = SR_ERR_ARG;
+ break;
}
return ret;
}
-/* 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)
+static void send_chunk(struct dev_context *devc, unsigned char *buf,
+ int num_samples)
{
struct sr_datafeed_packet packet;
struct sr_datafeed_analog analog;
- struct context *ctx;
float ch1, ch2, range;
int num_probes, data_offset, i;
- 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;
-
- ctx->current_transfer += transfer->actual_length;
- sr_dbg("hantek-dso: got %d of %d in frame", ctx->current_transfer, ctx->framesize * 2);
-
- num_probes = (ctx->ch1_enabled && ctx->ch2_enabled) ? 2 : 1;
+ 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 = transfer->actual_length / 2;
- analog.unit = SR_UNIT_VOLTAGE;
+ 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_probes);
data_offset = 0;
for (i = 0; i < analog.num_samples; i++) {
- /* The device always sends data for both channels. If a channel
+ /*
+ * 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.
+ * 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.
+ * 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 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 * *(transfer->buffer + i * 2 + 1);
+ /* TODO: Support for DSO-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 (ctx->ch2_enabled) {
- range = ((float)vdivs[ctx->voltage_ch2].p / vdivs[ctx->voltage_ch2].q) * 8;
- ch2 = range / 255 * *(transfer->buffer + i * 2);
+ 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 to 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("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("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(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);
- sr_session_send(ctx->cb_data, &packet);
- if (ctx->current_transfer >= ctx->framesize * 2) {
- /* That's the last chunk in this frame. */
+ 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(devc, devc->framebuf, devc->samp_buffered);
+
+ /* Mark the end of this frame. */
packet.type = SR_DF_FRAME_END;
- sr_session_send(ctx->cb_data, &packet);
+ sr_session_send(devc->cb_data, &packet);
- if (ctx->limit_frames && ++ctx->num_frames == ctx->limit_frames) {
+ 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);
+ devc->dev_state = STOPPING;
} else {
- ctx->current_transfer = 0;
- ctx->dev_state = NEW_CAPTURE;
+ 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 context *ctx;
- int capturestate;
+ struct dev_context *devc;
+ struct drv_context *drvc = hdi->priv;
+ const struct libusb_pollfd **lupfd;
+ int num_probes, i;
+ uint32_t trigger_offset;
+ uint8_t capturestate;
- /* Avoid compiler warnings. */
(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.
+ */
+ lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx);
+ for (i = 0; lupfd[i]; i++)
+ sr_source_remove(lupfd[i]->fd);
+ free(lupfd);
+
+ 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(usb_context, &tv);
+ libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
- ctx = cb_data;
/* TODO: ugh */
- if (ctx->dev_state == NEW_CAPTURE) {
- if (dso_capture_start(ctx) != SR_OK)
+ if (devc->dev_state == NEW_CAPTURE) {
+ if (dso_capture_start(devc) != SR_OK)
return TRUE;
- if (dso_enable_trigger(ctx) != SR_OK)
+ if (dso_enable_trigger(devc) != SR_OK)
return TRUE;
-// if (dso_force_trigger(ctx) != SR_OK)
+// if (dso_force_trigger(devc) != SR_OK)
// return TRUE;
- sr_dbg("hantek-dso: successfully requested next chunk");
- ctx->dev_state = CAPTURE;
+ sr_dbg("Successfully requested next chunk.");
+ devc->dev_state = CAPTURE;
return TRUE;
}
- if (ctx->dev_state != CAPTURE)
+ if (devc->dev_state != CAPTURE)
return TRUE;
- if ((capturestate = dso_get_capturestate(ctx)) == CAPTURE_UNKNOWN) {
- /* Generated by the function, not the hardware. */
+ if ((dso_get_capturestate(devc, &capturestate, &trigger_offset)) != SR_OK)
return TRUE;
- }
- sr_dbg("hantek-dso: capturestate %d", capturestate);
+ sr_dbg("Capturestate %d.", capturestate);
+ sr_dbg("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)
+ 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(ctx) != SR_OK)
+ if (dso_enable_trigger(devc) != SR_OK)
break;
-// if (dso_force_trigger(ctx) != SR_OK)
+// if (dso_force_trigger(devc) != SR_OK)
// break;
- sr_dbg("hantek-dso: successfully requested next chunk");
+ sr_dbg("Successfully requested next chunk.");
}
break;
case CAPTURE_FILLING:
- /* no data yet */
+ /* 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;
+ /* TODO: Check malloc return value. */
+ 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(ctx, receive_transfer) != SR_OK)
+ if (dso_get_channeldata(devc, receive_transfer) != SR_OK)
break;
- /* Don't hit the state machine again until we're done fetching
+ /*
+ * 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;
+ devc->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);
+ sr_session_send(sdi, &packet);
break;
case CAPTURE_READY_9BIT:
/* TODO */
- sr_err("not yet supported");
+ 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");
+ sr_dbg("Unknown capture state: %d.", capturestate);
+ break;
}
return TRUE;
}
-static int hw_dev_acquisition_start(int dev_index, void *cb_data)
+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 sr_dev_inst *sdi;
- struct context *ctx;
+ struct dev_context *devc;
+ struct drv_context *drvc = hdi->priv;
int i;
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
- return SR_ERR;
-
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR;
- ctx = sdi->priv;
- ctx->cb_data = cb_data;
+ devc = sdi->priv;
+ devc->cb_data = cb_data;
- if (dso_init(ctx) != SR_OK)
+ if (configure_probes(sdi) != SR_OK) {
+ sr_err("Failed to configure probes.");
+ return SR_ERR;
+ }
+
+ if (dso_init(devc) != SR_OK)
return SR_ERR;
- if (dso_capture_start(ctx) != SR_OK)
+ if (dso_capture_start(devc) != SR_OK)
return SR_ERR;
- ctx->dev_state = CAPTURE;
- lupfd = libusb_get_pollfds(usb_context);
+ devc->dev_state = CAPTURE;
+ lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx);
for (i = 0; lupfd[i]; i++)
- sr_source_add(lupfd[i]->fd, lupfd[i]->events, TICK, handle_event,
- ctx);
+ sr_source_add(lupfd[i]->fd, lupfd[i]->events, TICK,
+ handle_event, (void *)sdi);
free(lupfd);
/* Send header packet to the session bus. */
/* Send metadata about the SR_DF_ANALOG packets to come. */
packet.type = SR_DF_META_ANALOG;
packet.payload = &meta;
- meta.num_probes = ctx->profile->num_probes;
+ 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(int dev_index, void *cb_data)
+static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
- struct sr_datafeed_packet packet;
- struct sr_dev_inst *sdi;
- struct context *ctx;
+ struct dev_context *devc;
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
- return SR_ERR;
+ (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);
+ devc = sdi->priv;
+ devc->dev_state = STOPPING;
return SR_OK;
}
.api_version = 1,
.init = hw_init,
.cleanup = hw_cleanup,
+ .scan = hw_scan,
+ .dev_list = hw_dev_list,
+ .dev_clear = clear_instances,
.dev_open = hw_dev_open,
.dev_close = hw_dev_close,
- .dev_info_get = hw_dev_info_get,
- .dev_status_get = hw_dev_status_get,
- .hwcap_get_all = hw_hwcap_get_all,
+ .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,
};