]> sigrok.org Git - libsigrok.git/blobdiff - src/hardware/hantek-dso/api.c
output/csv: use intermediate time_t var, silence compiler warning
[libsigrok.git] / src / hardware / hantek-dso / api.c
index f29d4a0ec22dc513c1f8063118baf367403cddcd..bfad5f7135f07750901e04a9fda5eb4fe1a87fbd 100644 (file)
@@ -17,6 +17,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <config.h>
+#include <math.h>
 #include <stdio.h>
 #include <stdint.h>
 #include <stdlib.h>
 #include <inttypes.h>
 #include <glib.h>
 #include <libusb.h>
-#include "libsigrok.h"
+#include <libsigrok/libsigrok.h>
 #include "libsigrok-internal.h"
-#include "dso.h"
+#include "protocol.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
+#define NUM_TIMEBASE 10
+#define NUM_VDIV     8
 
 #define NUM_BUFFER_SIZES 2
 
@@ -51,22 +53,24 @@ static const uint32_t drvopts[] = {
 };
 
 static const uint32_t devopts[] = {
-       SR_CONF_CONTINUOUS | SR_CONF_SET,
-       SR_CONF_LIMIT_FRAMES | SR_CONF_SET,
+       SR_CONF_CONTINUOUS,
        SR_CONF_CONN | SR_CONF_GET,
+       SR_CONF_LIMIT_FRAMES | SR_CONF_GET | SR_CONF_SET,
        SR_CONF_TIMEBASE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
-       SR_CONF_BUFFERSIZE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+       SR_CONF_NUM_HDIV | SR_CONF_GET,
+       SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
        SR_CONF_TRIGGER_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
        SR_CONF_TRIGGER_SLOPE | SR_CONF_GET | SR_CONF_SET,
-       SR_CONF_HORIZ_TRIGGERPOS | SR_CONF_GET | SR_CONF_SET,
-       SR_CONF_NUM_HDIV | SR_CONF_GET,
+       SR_CONF_BUFFERSIZE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+       SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
        SR_CONF_NUM_VDIV | SR_CONF_GET,
+       SR_CONF_TRIGGER_LEVEL | SR_CONF_GET | SR_CONF_SET,
 };
 
 static const uint32_t devopts_cg[] = {
-       SR_CONF_FILTER | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
        SR_CONF_VDIV | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
        SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+       SR_CONF_FILTER | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 };
 
 static const char *channel_names[] = {
@@ -87,24 +91,24 @@ static const struct dso_profile dev_profiles[] = {
        {       0x04b4, 0x2090, 0x04b5, 0x2090,
                "Hantek", "DSO-2090",
                buffersizes_32k,
-               FIRMWARE_DIR "/hantek-dso-2090.fw" },
+               "hantek-dso-2090.fw" },
        {       0x04b4, 0x2150, 0x04b5, 0x2150,
                "Hantek", "DSO-2150",
                buffersizes_32k,
-               FIRMWARE_DIR "/hantek-dso-2150.fw" },
+               "hantek-dso-2150.fw" },
        {       0x04b4, 0x2250, 0x04b5, 0x2250,
                "Hantek", "DSO-2250",
                buffersizes_512k,
-               FIRMWARE_DIR "/hantek-dso-2250.fw" },
+               "hantek-dso-2250.fw" },
        {       0x04b4, 0x5200, 0x04b5, 0x5200,
                "Hantek", "DSO-5200",
                buffersizes_14k,
-               FIRMWARE_DIR "/hantek-dso-5200.fw" },
+               "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 },
+               "hantek-dso-5200A.fw" },
+       ALL_ZERO
 };
 
 static const uint64_t timebases[][2] = {
@@ -127,6 +131,28 @@ static const uint64_t timebases[][2] = {
        { 400, 1000 },
 };
 
+static const uint64_t samplerates[] = {
+       SR_KHZ(20),
+       SR_KHZ(25),
+       SR_KHZ(50),
+       SR_KHZ(100),
+       SR_KHZ(200),
+       SR_KHZ(250),
+       SR_KHZ(500),
+       SR_MHZ(1),
+       SR_MHZ(2),
+       SR_MHZ(5),
+       SR_MHZ(10),
+       SR_MHZ(20),
+       SR_MHZ(25),
+       SR_MHZ(50),
+       SR_MHZ(100),
+       SR_MHZ(125),
+       /* Fast mode not supported yet.
+       SR_MHZ(200),
+       SR_MHZ(250), */
+};
+
 static const uint64_t vdivs[][2] = {
        /* millivolts */
        { 10, 1000 },
@@ -142,33 +168,22 @@ static const uint64_t vdivs[][2] = {
 };
 
 static const char *trigger_sources[] = {
-       "CH1",
-       "CH2",
-       "EXT",
-       /* TODO: forced */
+       "CH1", "CH2", "EXT",
 };
 
 static const char *trigger_slopes[] = {
-       "r",
-       "f",
+       "r", "f",
 };
 
 static const char *coupling[] = {
-       "AC",
-       "DC",
-       "GND",
+       "AC", "DC", "GND",
 };
 
-SR_PRIV struct sr_dev_driver 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(const struct dso_profile *prof)
 {
        struct sr_dev_inst *sdi;
        struct sr_channel *ch;
        struct sr_channel_group *cg;
-       struct drv_context *drvc;
        struct dev_context *devc;
        unsigned int i;
 
@@ -176,7 +191,6 @@ static struct sr_dev_inst *dso_dev_new(const struct dso_profile *prof)
        sdi->status = SR_ST_INITIALIZING;
        sdi->vendor = g_strdup(prof->vendor);
        sdi->model = g_strdup(prof->model);
-       sdi->driver = &hantek_dso_driver_info;
 
        /*
         * Add only the real channels -- EXT isn't a source of data, only
@@ -184,18 +198,17 @@ static struct sr_dev_inst *dso_dev_new(const struct dso_profile *prof)
         */
        for (i = 0; i < ARRAY_SIZE(channel_names); i++) {
                ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel_names[i]);
-               cg = g_malloc0(sizeof(struct sr_channel_group));
-               cg->name = g_strdup(channel_names[i]);
+               cg = sr_channel_group_new(sdi, channel_names[i], NULL);
                cg->channels = g_slist_append(cg->channels, ch);
-               sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
        }
 
        devc = g_malloc0(sizeof(struct dev_context));
        devc->profile = prof;
        devc->dev_state = IDLE;
        devc->timebase = DEFAULT_TIMEBASE;
-       devc->ch1_enabled = TRUE;
-       devc->ch2_enabled = TRUE;
+       devc->samplerate = DEFAULT_SAMPLERATE;
+       devc->ch_enabled[0] = TRUE;
+       devc->ch_enabled[1] = TRUE;
        devc->voltage[0] = DEFAULT_VOLTAGE;
        devc->voltage[1] = DEFAULT_VOLTAGE;
        devc->coupling[0] = DEFAULT_COUPLING;
@@ -205,11 +218,9 @@ static struct sr_dev_inst *dso_dev_new(const struct dso_profile *prof)
        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;
+       devc->triggersource = NULL;
+       devc->capture_ratio = DEFAULT_CAPTURE_RATIO;
        sdi->priv = devc;
-       drvc = hantek_dso_driver_info.priv;
-       drvc->instances = g_slist_append(drvc->instances, sdi);
 
        return sdi;
 }
@@ -224,13 +235,14 @@ static int configure_channels(const struct sr_dev_inst *sdi)
        devc = sdi->priv;
 
        g_slist_free(devc->enabled_channels);
-       devc->ch1_enabled = devc->ch2_enabled = FALSE;
+       devc->enabled_channels = NULL;
+       devc->ch_enabled[0] = devc->ch_enabled[1] = FALSE;
        for (l = sdi->channels, p = 0; l; l = l->next, p++) {
                ch = l->data;
                if (p == 0)
-                       devc->ch1_enabled = ch->enabled;
+                       devc->ch_enabled[0] = ch->enabled;
                else
-                       devc->ch2_enabled = ch->enabled;
+                       devc->ch_enabled[1] = ch->enabled;
                if (ch->enabled)
                        devc->enabled_channels = g_slist_append(devc->enabled_channels, ch);
        }
@@ -238,24 +250,15 @@ static int configure_channels(const struct sr_dev_inst *sdi)
        return SR_OK;
 }
 
-static void clear_dev_context(void *priv)
+static void clear_helper(struct dev_context *devc)
 {
-       struct dev_context *devc;
-
-       devc = priv;
        g_free(devc->triggersource);
        g_slist_free(devc->enabled_channels);
-
 }
 
 static int dev_clear(const struct sr_dev_driver *di)
 {
-       return std_dev_clear(di, clear_dev_context);
-}
-
-static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
-{
-       return std_init(sr_ctx, di, LOG_PREFIX);
+       return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)
@@ -269,11 +272,11 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
        GSList *l, *devices, *conn_devices;
        struct libusb_device_descriptor des;
        libusb_device **devlist;
-       int ret, i, j;
+       int i, j;
        const char *conn;
        char connection_id[64];
 
-       drvc = di->priv;
+       drvc = di->context;
 
        devices = 0;
 
@@ -307,13 +310,10 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
                                continue;
                }
 
-               if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
-                       sr_err("Failed to get device descriptor: %s.",
-                                       libusb_error_name(ret));
-                       continue;
-               }
+               libusb_get_device_descriptor(devlist[i], &des);
 
-               usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
+               if (usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)) < 0)
+                       continue;
 
                prof = NULL;
                for (j = 0; dev_profiles[j].orig_vid; j++) {
@@ -326,12 +326,13 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
                                sdi->connection_id = g_strdup(connection_id);
                                devices = g_slist_append(devices, sdi);
                                devc = sdi->priv;
-                               if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
-                                               prof->firmware) == SR_OK)
+                               if (ezusb_upload_firmware(drvc->sr_ctx, 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");
+                               } else {
+                                       sr_err("Firmware upload failed, name %s", prof->firmware);
+                               }
                                /* Dummy USB address of 0xff will get overwritten later. */
                                sdi->conn = sr_usb_dev_inst_new(
                                                libusb_get_bus_number(devlist[i]), 0xff, NULL);
@@ -358,12 +359,7 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
        }
        libusb_free_device_list(devlist, 1);
 
-       return devices;
-}
-
-static GSList *dev_list(const struct sr_dev_driver *di)
-{
-       return ((struct drv_context *)(di->priv))->instances;
+       return std_scan_complete(di, devices);
 }
 
 static int dev_open(struct sr_dev_inst *sdi)
@@ -394,7 +390,7 @@ static int dev_open(struct sr_dev_inst *sdi)
                        timediff_ms = timediff_us / 1000;
                        sr_spew("Waited %" PRIi64 " ms.", timediff_ms);
                }
-               sr_info("Device came back after %d ms.", timediff_ms);
+               sr_info("Device came back after %" PRIi64 " ms.", timediff_ms);
        } else {
                err = dso_open(sdi);
        }
@@ -407,7 +403,7 @@ static int dev_open(struct sr_dev_inst *sdi)
        err = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
        if (err != 0) {
                sr_err("Unable to claim interface: %s.",
-                          libusb_error_name(err));
+                       libusb_error_name(err));
                return SR_ERR;
        }
 
@@ -421,17 +417,12 @@ static int dev_close(struct sr_dev_inst *sdi)
        return SR_OK;
 }
 
-static int cleanup(const struct sr_dev_driver *di)
-{
-       return dev_clear(di);
-}
-
-static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
-               const struct sr_channel_group *cg)
+static int config_get(uint32_t key, GVariant **data,
+       const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 {
        struct dev_context *devc;
        struct sr_usb_dev_inst *usb;
-       char str[128], *s;
+       const char *s;
        const uint64_t *vdiv;
        int ch_idx;
 
@@ -450,6 +441,9 @@ static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *s
        devc = sdi->priv;
        if (!cg) {
                switch (key) {
+               case SR_CONF_TRIGGER_LEVEL:
+                       *data = g_variant_new_double(devc->voffset_trigger);
+                       break;
                case SR_CONF_CONN:
                        if (!sdi->conn)
                                return SR_ERR_ARG;
@@ -458,28 +452,32 @@ static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *s
                                /* 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);
+                       *data = g_variant_new_printf("%d.%d", usb->bus, usb->address);
                        break;
                case SR_CONF_TIMEBASE:
                        *data = g_variant_new("(tt)", timebases[devc->timebase][0],
                                        timebases[devc->timebase][1]);
                        break;
+               case SR_CONF_SAMPLERATE:
+                       *data = g_variant_new_uint64(devc->samplerate);
+                       break;
                case SR_CONF_BUFFERSIZE:
                        *data = g_variant_new_uint64(devc->framesize);
                        break;
                case SR_CONF_TRIGGER_SOURCE:
+                       if (!devc->triggersource)
+                               return SR_ERR_NA;
                        *data = g_variant_new_string(devc->triggersource);
                        break;
                case SR_CONF_TRIGGER_SLOPE:
-                       if (devc->triggerslope == SLOPE_POSITIVE)
-                               s = "r";
-                       else
-                               s = "f";
+                       s = (devc->triggerslope == SLOPE_POSITIVE) ? "r" : "f";
                        *data = g_variant_new_string(s);
                        break;
-               case SR_CONF_HORIZ_TRIGGERPOS:
-                       *data = g_variant_new_double(devc->triggerposition);
+               case SR_CONF_CAPTURE_RATIO:
+                       *data = g_variant_new_uint64(devc->capture_ratio);
+                       break;
+               case SR_CONF_LIMIT_FRAMES:
+                       *data = g_variant_new_uint64(devc->limit_frames);
                        break;
                default:
                        return SR_ERR_NA;
@@ -508,80 +506,62 @@ static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *s
        return SR_OK;
 }
 
-static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
-               const struct sr_channel_group *cg)
+static int config_set(uint32_t key, 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, ch_idx, ret;
-       unsigned int i;
-       const char *tmp_str;
+       int ch_idx, idx;
+       float flt;
 
-       if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR_DEV_CLOSED;
-
-       ret = SR_OK;
        devc = sdi->priv;
        if (!cg) {
                switch (key) {
                case SR_CONF_LIMIT_FRAMES:
                        devc->limit_frames = g_variant_get_uint64(data);
                        break;
+               case SR_CONF_TRIGGER_LEVEL:
+                       flt = g_variant_get_double(data);
+                       if (flt < 0.0 || flt > 1.0) {
+                               sr_err("Trigger level must be in [0.0,1.0].");
+                               return SR_ERR_ARG;
+                       }
+                       devc->voffset_trigger = flt;
+                       if (dso_set_voffsets(sdi) != SR_OK)
+                               return SR_ERR;
+                       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'))
+                       if ((idx = std_str_idx(data, ARRAY_AND_SIZE(trigger_slopes))) < 0)
                                return SR_ERR_ARG;
-                       devc->triggerslope = (tmp_str[0] == 'r')
-                               ? SLOPE_POSITIVE : SLOPE_NEGATIVE;
+                       devc->triggerslope = idx;
                        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;
+               case SR_CONF_CAPTURE_RATIO:
+                       devc->capture_ratio = g_variant_get_uint64(data);
                        break;
                case SR_CONF_BUFFERSIZE:
-                       tmp_u64 = g_variant_get_uint64(data);
-                       for (i = 0; i < NUM_BUFFER_SIZES; i++) {
-                               if (devc->profile->buffersizes[i] == tmp_u64) {
-                                       devc->framesize = tmp_u64;
-                                       break;
-                               }
-                       }
-                       if (i == NUM_BUFFER_SIZES)
-                               ret = SR_ERR_ARG;
+                       if ((idx = std_u64_idx(data, devc->profile->buffersizes, NUM_BUFFER_SIZES)) < 0)
+                               return SR_ERR_ARG;
+                       devc->framesize = devc->profile->buffersizes[idx];
                        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;
+                       if ((idx = std_u64_tuple_idx(data, ARRAY_AND_SIZE(timebases))) < 0)
+                               return SR_ERR_ARG;
+                       devc->timebase = idx;
+                       break;
+               case SR_CONF_SAMPLERATE:
+                       if ((idx = std_u64_idx(data, ARRAY_AND_SIZE(samplerates))) < 0)
+                               return SR_ERR_ARG;
+                       devc->samplerate = samplerates[idx];
+                       if (dso_set_trigger_samplerate(sdi) != SR_OK)
+                               return SR_ERR;
                        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;
+                       if ((idx = std_str_idx(data, ARRAY_AND_SIZE(trigger_sources))) < 0)
+                               return SR_ERR_ARG;
+                       g_free(devc->triggersource);
+                       devc->triggersource = g_strdup(trigger_sources[idx]);
                        break;
                default:
-                       ret = SR_ERR_NA;
-                       break;
+                       return SR_ERR_NA;
                }
        } else {
                if (sdi->channel_groups->data == cg)
@@ -595,90 +575,50 @@ static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sd
                        devc->filter[ch_idx] = g_variant_get_boolean(data);
                        break;
                case SR_CONF_VDIV:
-                       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[ch_idx] = tmp_int;
-                       } else
-                               ret = SR_ERR_ARG;
+                       if ((idx = std_u64_tuple_idx(data, ARRAY_AND_SIZE(vdivs))) < 0)
+                               return SR_ERR_ARG;
+                       devc->voltage[ch_idx] = idx;
                        break;
                case SR_CONF_COUPLING:
-                       tmp_str = g_variant_get_string(data, NULL);
-                       for (i = 0; coupling[i]; i++) {
-                               if (!strcmp(tmp_str, coupling[i])) {
-                                       devc->coupling[ch_idx] = i;
-                                       break;
-                               }
-                       }
-                       if (coupling[i] == 0)
-                               ret = SR_ERR_ARG;
+                       if ((idx = std_str_idx(data, ARRAY_AND_SIZE(coupling))) < 0)
+                               return SR_ERR_ARG;
+                       devc->coupling[ch_idx] = idx;
                        break;
                default:
-                       ret = SR_ERR_NA;
-                       break;
+                       return SR_ERR_NA;
                }
        }
 
-       return ret;
+       return SR_OK;
 }
 
-static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
-               const struct sr_channel_group *cg)
+static int config_list(uint32_t 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;
-
-       if (key == SR_CONF_SCAN_OPTIONS) {
-               *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
-                               scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
-               return SR_OK;
-       } else if (key == SR_CONF_DEVICE_OPTIONS && !sdi) {
-               *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
-                               drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
-               return SR_OK;
-       }
-
-       if (!sdi)
-               return SR_ERR_ARG;
 
        if (!cg) {
                switch (key) {
+               case SR_CONF_SCAN_OPTIONS:
                case SR_CONF_DEVICE_OPTIONS:
-                       *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
-                                       devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
-                       break;
+                       return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
                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, NUM_BUFFER_SIZES, sizeof(uint64_t));
+                       *data = std_gvar_array_u64(devc->profile->buffersizes, NUM_BUFFER_SIZES);
+                       break;
+               case SR_CONF_SAMPLERATE:
+                       *data = std_gvar_samplerates(ARRAY_AND_SIZE(samplerates));
                        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);
+                       *data = std_gvar_tuple_array(ARRAY_AND_SIZE(timebases));
                        break;
                case SR_CONF_TRIGGER_SOURCE:
-                       *data = g_variant_new_strv(trigger_sources,
-                                       ARRAY_SIZE(trigger_sources));
+                       *data = g_variant_new_strv(ARRAY_AND_SIZE(trigger_sources));
                        break;
                case SR_CONF_TRIGGER_SLOPE:
-                       *data = g_variant_new_strv(trigger_slopes,
-                                       ARRAY_SIZE(trigger_slopes));
+                       *data = g_variant_new_strv(ARRAY_AND_SIZE(trigger_slopes));
                        break;
                default:
                        return SR_ERR_NA;
@@ -686,21 +626,13 @@ static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *
        } else {
                switch (key) {
                case SR_CONF_DEVICE_OPTIONS:
-                       *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
-                                       devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(uint32_t));
+                       *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg));
                        break;
                case SR_CONF_COUPLING:
-                       *data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling));
+                       *data = g_variant_new_strv(ARRAY_AND_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);
+                       *data = std_gvar_tuple_array(ARRAY_AND_SIZE(vdivs));
                        break;
                default:
                        return SR_ERR_NA;
@@ -715,52 +647,56 @@ static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf,
 {
        struct sr_datafeed_packet packet;
        struct sr_datafeed_analog analog;
-       struct dev_context *devc;
-       float ch1, ch2, range;
-       int num_channels, data_offset, i;
+       struct sr_analog_encoding encoding;
+       struct sr_analog_meaning meaning;
+       struct sr_analog_spec spec;
+       struct dev_context *devc = sdi->priv;
+       GSList *channels = devc->enabled_channels;
 
-       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;
+       sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
        analog.num_samples = num_samples;
-       analog.mq = SR_MQ_VOLTAGE;
-       analog.unit = SR_UNIT_VOLT;
-       analog.mqflags = 0;
+       analog.meaning->mq = SR_MQ_VOLTAGE;
+       analog.meaning->unit = SR_UNIT_VOLT;
+       analog.meaning->mqflags = 0;
        /* 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[0]][0] / vdivs[devc->voltage[0]][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[1]][0] / vdivs[devc->voltage[1]][1]) * 8;
-                       ch2 = range / 255 * *(buf + i * 2);
-                       ch2 -= range / 2;
-                       analog.data[data_offset++] = ch2;
+       analog.data = g_try_malloc(num_samples * sizeof(float));
+
+       for (int ch = 0; ch < NUM_CHANNELS; ch++) {
+               if (!devc->ch_enabled[ch])
+                       continue;
+
+               float range = ((float)vdivs[devc->voltage[ch]][0] / vdivs[devc->voltage[ch]][1]) * 8;
+               float vdivlog = log10f(range / 255);
+               int digits = -(int)vdivlog + (vdivlog < 0.0);
+               analog.encoding->digits = digits;
+               analog.spec->spec_digits = digits;
+               analog.meaning->channels = g_slist_append(NULL, channels->data);
+
+               for (int i = 0; i < 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. */
+                       ((float *)analog.data)[i] = range / 255 * *(buf + i * 2 + 1 - ch) - range / 2;
                }
+               sr_session_send(sdi, &packet);
+               g_slist_free(analog.meaning->channels);
+
+               channels = channels->next;
        }
-       sr_session_send(devc->cb_data, &packet);
+       g_free(analog.data);
 }
 
 /*
@@ -769,17 +705,16 @@ static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf,
  * 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)
+static void LIBUSB_CALL 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);
+       sr_spew("receive_transfer(): status %s received %d bytes.",
+               libusb_error_name(transfer->status), transfer->actual_length);
 
        if (transfer->actual_length == 0)
                /* Nothing to send to the bus. */
@@ -788,7 +723,7 @@ static void receive_transfer(struct libusb_transfer *transfer)
        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);
+               devc->samp_received + num_samples, devc->framesize);
 
        /*
         * The device always sends a full frame, but the beginning of the frame
@@ -819,7 +754,7 @@ static void receive_transfer(struct libusb_transfer *transfer)
 
                        /* The rest of this chunk starts with the trigger point. */
                        sr_dbg("Reached trigger point, %d samples buffered.",
-                                  devc->samp_buffered);
+                               devc->samp_buffered);
 
                        /* Avoid the corner case where the chunk ended at
                         * exactly the trigger point. */
@@ -843,14 +778,15 @@ static void receive_transfer(struct libusb_transfer *transfer)
                /* 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);
+                       devc->samp_buffered);
                send_chunk(sdi, devc->framebuf, devc->samp_buffered);
+               g_free(devc->framebuf);
+               devc->framebuf = NULL;
 
                /* Mark the end of this frame. */
-               packet.type = SR_DF_FRAME_END;
-               sr_session_send(devc->cb_data, &packet);
+               std_session_send_df_frame_end(sdi);
 
-               if (devc->limit_frames && ++devc->num_frames == devc->limit_frames) {
+               if (devc->limit_frames && ++devc->num_frames >= devc->limit_frames) {
                        /* Terminate session */
                        devc->dev_state = STOPPING;
                } else {
@@ -862,7 +798,6 @@ static void receive_transfer(struct libusb_transfer *transfer)
 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 sr_dev_driver *di;
        struct dev_context *devc;
@@ -876,7 +811,7 @@ static int handle_event(int fd, int revents, void *cb_data)
 
        sdi = cb_data;
        di = sdi->driver;
-       drvc = di->priv;
+       drvc = di->context;
        devc = sdi->priv;
        if (devc->dev_state == STOPPING) {
                /* We've been told to wind up the acquisition. */
@@ -887,8 +822,7 @@ static int handle_event(int fd, int revents, void *cb_data)
                 */
                usb_source_remove(sdi->session, drvc->sr_ctx);
 
-               packet.type = SR_DF_END;
-               sr_session_send(sdi, &packet);
+               std_session_send_df_end(sdi);
 
                devc->dev_state = IDLE;
 
@@ -905,8 +839,10 @@ static int handle_event(int fd, int revents, void *cb_data)
                        return TRUE;
                if (dso_enable_trigger(sdi) != SR_OK)
                        return TRUE;
-//             if (dso_force_trigger(sdi) != SR_OK)
-//                     return TRUE;
+               if (!devc->triggersource) {
+                       if (dso_force_trigger(sdi) != SR_OK)
+                               return TRUE;
+               }
                sr_dbg("Successfully requested next chunk.");
                devc->dev_state = CAPTURE;
                return TRUE;
@@ -927,8 +863,10 @@ static int handle_event(int fd, int revents, void *cb_data)
                                break;
                        if (dso_enable_trigger(sdi) != SR_OK)
                                break;
-//                     if (dso_force_trigger(sdi) != SR_OK)
-//                             break;
+                       if (!devc->triggersource) {
+                               if (dso_force_trigger(sdi) != SR_OK)
+                                       break;
+                       }
                        sr_dbg("Successfully requested next chunk.");
                }
                break;
@@ -936,10 +874,11 @@ static int handle_event(int fd, int revents, void *cb_data)
                /* No data yet. */
                break;
        case CAPTURE_READY_8BIT:
+       case CAPTURE_READY_2250:
                /* Remember where in the captured frame the trigger is. */
                devc->trigger_offset = trigger_offset;
 
-               num_channels = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
+               num_channels = (devc->ch_enabled[0] && devc->ch_enabled[1]) ? 2 : 1;
                devc->framebuf = g_malloc(devc->framesize * num_channels * 2);
                devc->samp_buffered = devc->samp_received = 0;
 
@@ -954,8 +893,7 @@ static int handle_event(int fd, int revents, void *cb_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(sdi, &packet);
+               std_session_send_df_frame_begin(sdi);
                break;
        case CAPTURE_READY_9BIT:
                /* TODO */
@@ -972,17 +910,13 @@ static int handle_event(int fd, int revents, void *cb_data)
        return TRUE;
 }
 
-static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
+static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 {
        struct dev_context *devc;
        struct sr_dev_driver *di = sdi->driver;
-       struct drv_context *drvc = di->priv;
-
-       if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR_DEV_CLOSED;
+       struct drv_context *drvc = di->context;
 
        devc = sdi->priv;
-       devc->cb_data = cb_data;
 
        if (configure_channels(sdi) != SR_OK) {
                sr_err("Failed to configure channels.");
@@ -998,35 +932,30 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
        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);
+       std_session_send_df_header(sdi);
 
        return SR_OK;
 }
 
-static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
+static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
        struct dev_context *devc;
 
-       (void)cb_data;
-
-       if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR;
-
        devc = sdi->priv;
        devc->dev_state = STOPPING;
+       devc->num_frames = 0;
 
        return SR_OK;
 }
 
-SR_PRIV struct sr_dev_driver hantek_dso_driver_info = {
+static struct sr_dev_driver hantek_dso_driver_info = {
        .name = "hantek-dso",
        .longname = "Hantek DSO",
        .api_version = 1,
-       .init = init,
-       .cleanup = cleanup,
+       .init = std_init,
+       .cleanup = std_cleanup,
        .scan = scan,
-       .dev_list = dev_list,
+       .dev_list = std_dev_list,
        .dev_clear = dev_clear,
        .config_get = config_get,
        .config_set = config_set,
@@ -1035,5 +964,6 @@ SR_PRIV struct sr_dev_driver hantek_dso_driver_info = {
        .dev_close = dev_close,
        .dev_acquisition_start = dev_acquisition_start,
        .dev_acquisition_stop = dev_acquisition_stop,
-       .priv = NULL,
+       .context = NULL,
 };
+SR_REGISTER_DEV_DRIVER(hantek_dso_driver_info);