]> sigrok.org Git - libsigrok.git/blobdiff - hardware/chronovu-la8/api.c
la8: Add support for the ChronoVu LA16.
[libsigrok.git] / hardware / chronovu-la8 / api.c
index 2dd12e3bf05411900c121ca760e7d25ccca35417..685e1a46d88d95f571e86167292460d2a9a5fb01 100644 (file)
@@ -1,7 +1,7 @@
 /*
- * This file is part of the sigrok project.
+ * This file is part of the libsigrok project.
  *
- * Copyright (C) 2011-2012 Uwe Hermann <uwe@hermann-uwe.de>
+ * Copyright (C) 2011-2014 Uwe Hermann <uwe@hermann-uwe.de>
  *
  * 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
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
-#include <ftdi.h>
-#include <glib.h>
-#include <string.h>
-#include "libsigrok.h"
-#include "libsigrok-internal.h"
 #include "protocol.h"
 
 SR_PRIV struct sr_dev_driver chronovu_la8_driver_info;
 static struct sr_dev_driver *di = &chronovu_la8_driver_info;
 
-/*
- * The ChronoVu LA8 can have multiple PIDs. Older versions shipped with
- * a standard FTDI USB VID/PID of 0403:6001, newer ones have 0403:8867.
- */ 
-static const uint16_t usb_pids[] = {
-       0x6001,
-       0x8867,
+static const int32_t hwcaps[] = {
+       SR_CONF_LOGIC_ANALYZER,
+       SR_CONF_SAMPLERATE,
+       SR_CONF_LIMIT_MSEC, /* TODO: Not yet implemented. */
+       SR_CONF_LIMIT_SAMPLES, /* TODO: Not yet implemented. */
+};
+
+/* The ChronoVu LA8/LA16 can have multiple VID/PID pairs. */
+static struct {
+       uint16_t vid;
+       uint16_t pid;
+       int model;
+       const char *iproduct;
+} vid_pid[] = {
+       { 0x0403, 0x6001, CHRONOVU_LA8,  "ChronoVu LA8"  },
+       { 0x0403, 0x8867, CHRONOVU_LA8,  "ChronoVu LA8"  },
+       { 0x0403, 0x6001, CHRONOVU_LA16, "ChronoVu LA16" },
+       { 0x0403, 0x8867, CHRONOVU_LA16, "ChronoVu LA16" },
 };
 
-/* Function prototypes. */
-static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
+static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
 
-static int clear_instances(void)
+static void clear_helper(void *priv)
 {
-       GSList *l;
-       struct sr_dev_inst *sdi;
-       struct drv_context *drvc;
        struct dev_context *devc;
 
-       drvc = di->priv;
+       devc = priv;
 
-       /* Properly close all devices. */
-       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 (sdi->priv) {
-                       devc = sdi->priv;
-                       ftdi_free(devc->ftdic);
-               }
-               sr_dev_inst_free(sdi);
-       }
-       g_slist_free(drvc->instances);
-       drvc->instances = NULL;
+       ftdi_free(devc->ftdic);
+       g_free(devc->final_buf);
+}
 
-       return SR_OK;
+static int dev_clear(void)
+{
+       return std_dev_clear(di, clear_helper);
 }
 
-static int hw_init(struct sr_context *sr_ctx)
+static int init(struct sr_context *sr_ctx)
 {
-       return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN);
+       return std_init(sr_ctx, di, LOG_PREFIX);
 }
 
-static GSList *hw_scan(GSList *options)
+static int add_device(int idx, int model, GSList **devices)
 {
+       int ret;
+       unsigned int i;
        struct sr_dev_inst *sdi;
-       struct sr_probe *probe;
        struct drv_context *drvc;
        struct dev_context *devc;
-       GSList *devices;
-       unsigned int i;
-       int ret;
+       struct sr_channel *ch;
 
-       (void)options;
+       ret = SR_OK;
 
        drvc = di->priv;
 
-       devices = NULL;
-
        /* Allocate memory for our private device context. */
-       if (!(devc = g_try_malloc(sizeof(struct dev_context)))) {
-               sr_err("Device context malloc failed.");
-               goto err_free_nothing;
-       }
+       devc = g_try_malloc(sizeof(struct dev_context));
 
        /* Set some sane defaults. */
-       devc->ftdic = NULL;
-       devc->cur_samplerate = SR_MHZ(100); /* 100MHz == max. samplerate */
+       devc->prof = &cv_profiles[model];
+       devc->ftdic = NULL; /* Will be set in the open() API call. */
+       devc->cur_samplerate = 0; /* Set later (different for LA8/LA16). */
        devc->limit_msec = 0;
        devc->limit_samples = 0;
        devc->cb_data = NULL;
        memset(devc->mangled_buf, 0, BS);
        devc->final_buf = NULL;
-       devc->trigger_pattern = 0x00; /* Value irrelevant, see trigger_mask. */
-       devc->trigger_mask = 0x00; /* All probes are "don't care". */
-       devc->trigger_timeout = 10; /* Default to 10s trigger timeout. */
+       devc->trigger_pattern = 0x0000; /* Irrelevant, see trigger_mask. */
+       devc->trigger_mask = 0x0000; /* All channels: "don't care". */
+       devc->trigger_edgemask = 0x0000; /* All channels: "state triggered". */
        devc->trigger_found = 0;
        devc->done = 0;
        devc->block_counter = 0;
-       devc->divcount = 0; /* 10ns sample period == 100MHz samplerate */
-       devc->usb_pid = 0;
+       devc->divcount = 0;
+       devc->usb_vid = vid_pid[idx].vid;
+       devc->usb_pid = vid_pid[idx].pid;
+       memset(devc->samplerates, 0, sizeof(uint64_t) * 255);
 
        /* Allocate memory where we'll store the de-mangled data. */
        if (!(devc->final_buf = g_try_malloc(SDRAM_SIZE))) {
-               sr_err("final_buf malloc failed.");
+               sr_err("Failed to allocate memory for sample buffer.");
+               ret = SR_ERR_MALLOC;
                goto err_free_devc;
        }
 
-       /* Allocate memory for the FTDI context (ftdic) and initialize it. */
-       if (!(devc->ftdic = ftdi_new())) {
-               sr_err("%s: ftdi_new failed.", __func__);
-               goto err_free_final_buf;
-       }
-
-       /* Check for the device and temporarily open it. */
-       for (i = 0; i < ARRAY_SIZE(usb_pids); i++) {
-               sr_dbg("Probing for VID/PID %04x:%04x.", USB_VENDOR_ID,
-                      usb_pids[i]);
-               ret = ftdi_usb_open_desc(devc->ftdic, USB_VENDOR_ID,
-                                        usb_pids[i], USB_DESCRIPTION, NULL);
-               if (ret == 0) {
-                       sr_dbg("Found LA8 device (%04x:%04x).",
-                              USB_VENDOR_ID, usb_pids[i]);
-                       devc->usb_pid = usb_pids[i];
-               }
-       }
-
-       if (devc->usb_pid == 0)
-               goto err_free_ftdic;
+       /* We now know the device, set its max. samplerate as default. */
+       devc->cur_samplerate = devc->prof->max_samplerate;
 
        /* Register the device with libsigrok. */
        sdi = sr_dev_inst_new(0, SR_ST_INITIALIZING,
-                       USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION);
+                             "ChronoVu", devc->prof->modelname, NULL);
        if (!sdi) {
-               sr_err("%s: sr_dev_inst_new failed.", __func__);
-               goto err_close_ftdic;
+               sr_err("Failed to create device instance.");
+               ret = SR_ERR;
+               goto err_free_final_buf;
        }
        sdi->driver = di;
        sdi->priv = devc;
 
-       for (i = 0; probe_names[i]; i++) {
-               if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE,
-                                          probe_names[i])))
-                       return NULL;
-               sdi->probes = g_slist_append(sdi->probes, probe);
+       for (i = 0; i < devc->prof->num_channels; i++) {
+               if (!(ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE,
+                                         cv_channel_names[i]))) {
+                       ret = SR_ERR;
+                       goto err_free_dev_inst;
+               }
+               sdi->channels = g_slist_append(sdi->channels, ch);
        }
 
-       devices = g_slist_append(devices, sdi);
+       *devices = g_slist_append(*devices, sdi);
        drvc->instances = g_slist_append(drvc->instances, sdi);
 
-       /* Close device. We'll reopen it again when we need it. */
-       (void) la8_close(devc); /* Log, but ignore errors. */
-
-       return devices;
+       return SR_OK;
 
-err_close_ftdic:
-       (void) la8_close(devc); /* Log, but ignore errors. */
-err_free_ftdic:
-       ftdi_free(devc->ftdic); /* NOT free() or g_free()! */
+err_free_dev_inst:
+       sr_dev_inst_free(sdi);
 err_free_final_buf:
        g_free(devc->final_buf);
 err_free_devc:
        g_free(devc);
-err_free_nothing:
 
-       return NULL;
+       return ret;
 }
 
-static GSList *hw_dev_list(void)
+static GSList *scan(GSList *options)
+{
+       int ret;
+       unsigned int i;
+       GSList *devices;
+       struct ftdi_context *ftdic;
+
+       (void)options;
+
+       devices = NULL;
+
+       /* Allocate memory for the FTDI context and initialize it. */
+       if (!(ftdic = ftdi_new())) {
+               sr_err("Failed to initialize libftdi.");
+               return NULL;
+       }
+
+       /* Check for LA8 and/or LA16 devices with various VID/PIDs. */
+       for (i = 0; i < ARRAY_SIZE(vid_pid); i++) {
+               ret = ftdi_usb_open_desc(ftdic, vid_pid[i].vid,
+                       vid_pid[i].pid, vid_pid[i].iproduct, NULL);
+               if (ret < 0)
+                       continue; /* No device found. */
+
+               sr_dbg("Found %s device (%04x:%04x).",
+                      vid_pid[i].iproduct, vid_pid[i].vid, vid_pid[i].pid);
+
+               if ((ret = add_device(i, vid_pid[i].model, &devices)) < 0)
+                       sr_dbg("Failed to add device: %d.", ret);
+
+               if ((ret = ftdi_usb_close(ftdic)) < 0)
+                       sr_dbg("Failed to close FTDI device (%d): %s.",
+                              ret, ftdi_get_error_string(ftdic));
+       }
+
+       /* Close USB device, deinitialize and free the FTDI context. */
+       ftdi_free(ftdic);
+       ftdic = NULL;
+
+       return devices;
+}
+
+static GSList *dev_list(void)
 {
        return ((struct drv_context *)(di->priv))->instances;
 }
 
-static int hw_dev_open(struct sr_dev_inst *sdi)
+static int dev_open(struct sr_dev_inst *sdi)
 {
        struct dev_context *devc;
        int ret;
 
-       if (!(devc = sdi->priv)) {
-               sr_err("%s: sdi->priv was NULL.", __func__);
+       ret = SR_ERR;
+
+       if (!(devc = sdi->priv))
                return SR_ERR_BUG;
+
+       /* Allocate memory for the FTDI context and initialize it. */
+       if (!(devc->ftdic = ftdi_new())) {
+               sr_err("Failed to initialize libftdi.");
+               return SR_ERR;
        }
 
-       sr_dbg("Opening LA8 device (%04x:%04x).", USB_VENDOR_ID,
-              devc->usb_pid);
+       sr_dbg("Opening %s device (%04x:%04x).", devc->prof->modelname,
+              devc->usb_vid, devc->usb_pid);
 
        /* Open the device. */
-       if ((ret = ftdi_usb_open_desc(devc->ftdic, USB_VENDOR_ID,
-                       devc->usb_pid, USB_DESCRIPTION, NULL)) < 0) {
-               sr_err("%s: ftdi_usb_open_desc: (%d) %s",
-                      __func__, ret, ftdi_get_error_string(devc->ftdic));
-               (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */
-               return SR_ERR;
+       if ((ret = ftdi_usb_open_desc(devc->ftdic, devc->usb_vid,
+                       devc->usb_pid, devc->prof->iproduct, NULL)) < 0) {
+               sr_err("Failed to open FTDI device (%d): %s.",
+                      ret, ftdi_get_error_string(devc->ftdic));
+               goto err_ftdi_free;
        }
        sr_dbg("Device opened successfully.");
 
        /* Purge RX/TX buffers in the FTDI chip. */
        if ((ret = ftdi_usb_purge_buffers(devc->ftdic)) < 0) {
-               sr_err("%s: ftdi_usb_purge_buffers: (%d) %s",
-                      __func__, ret, ftdi_get_error_string(devc->ftdic));
-               (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */
-               goto err_dev_open_close_ftdic;
+               sr_err("Failed to purge FTDI buffers (%d): %s.",
+                      ret, ftdi_get_error_string(devc->ftdic));
+               goto err_ftdi_free;
        }
        sr_dbg("FTDI buffers purged successfully.");
 
        /* Enable flow control in the FTDI chip. */
        if ((ret = ftdi_setflowctrl(devc->ftdic, SIO_RTS_CTS_HS)) < 0) {
-               sr_err("%s: ftdi_setflowcontrol: (%d) %s",
-                      __func__, ret, ftdi_get_error_string(devc->ftdic));
-               (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */
-               goto err_dev_open_close_ftdic;
+               sr_err("Failed to enable FTDI flow control (%d): %s.",
+                      ret, ftdi_get_error_string(devc->ftdic));
+               goto err_ftdi_free;
        }
        sr_dbg("FTDI flow control enabled successfully.");
 
@@ -231,124 +244,128 @@ static int hw_dev_open(struct sr_dev_inst *sdi)
 
        return SR_OK;
 
-err_dev_open_close_ftdic:
-       (void) la8_close(devc); /* Log, but ignore errors. */
-       return SR_ERR;
+err_ftdi_free:
+       ftdi_free(devc->ftdic); /* Close device (if open), free FTDI context. */
+       devc->ftdic = NULL;
+       return ret;
 }
 
-static int hw_dev_close(struct sr_dev_inst *sdi)
+static int dev_close(struct sr_dev_inst *sdi)
 {
+       int ret;
        struct dev_context *devc;
 
-       devc = sdi->priv;
+       if (sdi->status != SR_ST_ACTIVE)
+               return SR_OK;
 
-       if (sdi->status == SR_ST_ACTIVE) {
-               sr_dbg("Status ACTIVE, closing device.");
-               (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */
-       } else {
-               sr_spew("Status not ACTIVE, nothing to do.");
-       }
+       devc = sdi->priv;
 
+       if (devc->ftdic && (ret = ftdi_usb_close(devc->ftdic)) < 0)
+               sr_err("Failed to close FTDI device (%d): %s.",
+                      ret, ftdi_get_error_string(devc->ftdic));
        sdi->status = SR_ST_INACTIVE;
 
-       g_free(devc->final_buf);
-
        return SR_OK;
 }
 
-static int hw_cleanup(void)
+static int cleanup(void)
 {
-       if (!di->priv)
-               /* Can get called on an unused driver, doesn't matter. */
-               return SR_OK;
-
-       clear_instances();
-
-       return SR_OK;
+       return dev_clear();
 }
 
-static int config_get(int id, const void **data, const struct sr_dev_inst *sdi)
+static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi,
+               const struct sr_channel_group *cg)
 {
        struct dev_context *devc;
 
+       (void)cg;
+
        switch (id) {
        case SR_CONF_SAMPLERATE:
-               if (sdi) {
-                       devc = sdi->priv;
-                       *data = &devc->cur_samplerate;
-                       sr_spew("%s: Returning samplerate: %" PRIu64 "Hz.",
-                               __func__, devc->cur_samplerate);
-               } else
-                       return SR_ERR;
+               if (!sdi || !(devc = sdi->priv))
+                       return SR_ERR_BUG;
+               *data = g_variant_new_uint64(devc->cur_samplerate);
                break;
        default:
-               return SR_ERR_ARG;
+               return SR_ERR_NA;
        }
 
        return SR_OK;
 }
 
-static int config_set(int id, const void *value, const struct sr_dev_inst *sdi)
+static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi,
+               const struct sr_channel_group *cg)
 {
        struct dev_context *devc;
 
-       if (!(devc = sdi->priv)) {
-               sr_err("%s: sdi->priv was NULL.", __func__);
+       (void)cg;
+
+       if (sdi->status != SR_ST_ACTIVE)
+               return SR_ERR_DEV_CLOSED;
+
+       if (!(devc = sdi->priv))
                return SR_ERR_BUG;
-       }
 
        switch (id) {
        case SR_CONF_SAMPLERATE:
-               if (set_samplerate(sdi, *(const uint64_t *)value) == SR_ERR) {
-                       sr_err("%s: setting samplerate failed.", __func__);
+               if (cv_set_samplerate(sdi, g_variant_get_uint64(data)) < 0)
                        return SR_ERR;
-               }
-               sr_dbg("SAMPLERATE = %" PRIu64, devc->cur_samplerate);
                break;
        case SR_CONF_LIMIT_MSEC:
-               if (*(const uint64_t *)value == 0) {
-                       sr_err("%s: LIMIT_MSEC can't be 0.", __func__);
-                       return SR_ERR;
-               }
-               devc->limit_msec = *(const uint64_t *)value;
-               sr_dbg("LIMIT_MSEC = %" PRIu64, devc->limit_msec);
+               if (g_variant_get_uint64(data) == 0)
+                       return SR_ERR_ARG;
+               devc->limit_msec = g_variant_get_uint64(data);
                break;
        case SR_CONF_LIMIT_SAMPLES:
-               if (*(const uint64_t *)value < MIN_NUM_SAMPLES) {
-                       sr_err("%s: LIMIT_SAMPLES too small.", __func__);
-                       return SR_ERR;
-               }
-               devc->limit_samples = *(const uint64_t *)value;
-               sr_dbg("LIMIT_SAMPLES = %" PRIu64, devc->limit_samples);
+               if (g_variant_get_uint64(data) == 0)
+                       return SR_ERR_ARG;
+               devc->limit_samples = g_variant_get_uint64(data);
                break;
        default:
-               /* Unknown capability, return SR_ERR. */
-               sr_err("%s: Unknown capability: %d.", __func__, id);
-               return SR_ERR;
-               break;
+               return SR_ERR_NA;
        }
 
        return SR_OK;
 }
 
-static int config_list(int key, const void **data, const struct sr_dev_inst *sdi)
+static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
+               const struct sr_channel_group *cg)
 {
+       GVariant *gvar, *grange[2];
+       GVariantBuilder gvb;
+       struct dev_context *devc;
 
-       (void)sdi;
+       (void)cg;
 
        switch (key) {
        case SR_CONF_DEVICE_OPTIONS:
-               *data = hwcaps;
+               *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
+                               hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
                break;
        case SR_CONF_SAMPLERATE:
-               fill_supported_samplerates_if_needed();
-               *data = &samplerates;
+               if (!sdi || !sdi->priv || !(devc = sdi->priv))
+                       return SR_ERR_BUG;
+               cv_fill_samplerates_if_needed(sdi);
+               g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
+               gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
+                               devc->samplerates,
+                               ARRAY_SIZE(devc->samplerates),
+                               sizeof(uint64_t));
+               g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
+               *data = g_variant_builder_end(&gvb);
+               break;
+       case SR_CONF_LIMIT_SAMPLES:
+               grange[0] = g_variant_new_uint64(0);
+               grange[1] = g_variant_new_uint64(MAX_NUM_SAMPLES);
+               *data = g_variant_new_tuple(grange, 2);
                break;
        case SR_CONF_TRIGGER_TYPE:
-               *data = (char *)TRIGGER_TYPE;
+               if (!sdi || !sdi->priv || !(devc = sdi->priv) || !devc->prof)
+                       return SR_ERR_BUG;
+               *data = g_variant_new_string(devc->prof->trigger_type);
                break;
        default:
-               return SR_ERR_ARG;
+               return SR_ERR_NA;
        }
 
        return SR_OK;
@@ -364,24 +381,24 @@ static int receive_data(int fd, int revents, void *cb_data)
        (void)revents;
 
        if (!(sdi = cb_data)) {
-               sr_err("%s: cb_data was NULL.", __func__);
+               sr_err("cb_data was NULL.");
                return FALSE;
        }
 
        if (!(devc = sdi->priv)) {
-               sr_err("%s: sdi->priv was NULL.", __func__);
+               sr_err("sdi->priv was NULL.");
                return FALSE;
        }
 
        if (!devc->ftdic) {
-               sr_err("%s: devc->ftdic was NULL.", __func__);
+               sr_err("devc->ftdic was NULL.");
                return FALSE;
        }
 
        /* Get one block of data. */
-       if ((ret = la8_read_block(devc)) < 0) {
-               sr_err("%s: la8_read_block error: %d.", __func__, ret);
-               hw_dev_acquisition_stop(sdi, sdi);
+       if ((ret = cv_read_block(devc)) < 0) {
+               sr_err("Failed to read data block: %d.", ret);
+               dev_acquisition_stop(sdi, sdi);
                return FALSE;
        }
 
@@ -395,55 +412,67 @@ static int receive_data(int fd, int revents, void *cb_data)
 
        /* All data was received and demangled, send it to the session bus. */
        for (i = 0; i < NUM_BLOCKS; i++)
-               send_block_to_session_bus(devc, i);
+               cv_send_block_to_session_bus(devc, i);
 
-       hw_dev_acquisition_stop(sdi, sdi);
+       dev_acquisition_stop(sdi, sdi);
 
        return TRUE;
 }
 
-static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
-                                   void *cb_data)
+static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
 {
        struct dev_context *devc;
-       uint8_t buf[4];
-       int bytes_written;
+       uint8_t buf[8];
+       int bytes_to_write, bytes_written;
+
+       if (sdi->status != SR_ST_ACTIVE)
+               return SR_ERR_DEV_CLOSED;
 
        if (!(devc = sdi->priv)) {
-               sr_err("%s: sdi->priv was NULL.", __func__);
+               sr_err("sdi->priv was NULL.");
                return SR_ERR_BUG;
        }
 
        if (!devc->ftdic) {
-               sr_err("%s: devc->ftdic was NULL.", __func__);
+               sr_err("devc->ftdic was NULL.");
                return SR_ERR_BUG;
        }
 
-       devc->divcount = samplerate_to_divcount(devc->cur_samplerate);
+       devc->divcount = cv_samplerate_to_divcount(sdi, devc->cur_samplerate);
        if (devc->divcount == 0xff) {
-               sr_err("%s: Invalid divcount/samplerate.", __func__);
+               sr_err("Invalid divcount/samplerate.");
                return SR_ERR;
        }
 
-       if (configure_probes(sdi) != SR_OK) {
-               sr_err("Failed to configure probes.");
+       if (cv_configure_channels(sdi) != SR_OK) {
+               sr_err("Failed to configure channels.");
                return SR_ERR;
        }
 
        /* Fill acquisition parameters into buf[]. */
-       buf[0] = devc->divcount;
-       buf[1] = 0xff; /* This byte must always be 0xff. */
-       buf[2] = devc->trigger_pattern;
-       buf[3] = devc->trigger_mask;
+       if (devc->prof->model == CHRONOVU_LA8) {
+               buf[0] = devc->divcount;
+               buf[1] = 0xff; /* This byte must always be 0xff. */
+               buf[2] = devc->trigger_pattern & 0xff;
+               buf[3] = devc->trigger_mask & 0xff;
+               bytes_to_write = 4;
+       } else {
+               buf[0] = devc->divcount;
+               buf[1] = 0xff; /* This byte must always be 0xff. */
+               buf[2] = (devc->trigger_pattern & 0xff00) >> 8;  /* LSB */
+               buf[3] = (devc->trigger_pattern & 0x00ff) >> 0;  /* MSB */
+               buf[4] = (devc->trigger_mask & 0xff00) >> 8;     /* LSB */
+               buf[5] = (devc->trigger_mask & 0x00ff) >> 0;     /* MSB */
+               buf[6] = (devc->trigger_edgemask & 0xff00) >> 8; /* LSB */
+               buf[7] = (devc->trigger_edgemask & 0x00ff) >> 0; /* MSB */
+               bytes_to_write = 8;
+       }
 
        /* Start acquisition. */
-       bytes_written = la8_write(devc, buf, 4);
+       bytes_written = cv_write(devc, buf, bytes_to_write);
 
-       if (bytes_written < 0) {
-               sr_err("Acquisition failed to start: %d.", bytes_written);
-               return SR_ERR;
-       } else if (bytes_written != 4) {
-               sr_err("Acquisition failed to start: %d.", bytes_written);
+       if (bytes_written < 0 || bytes_written != bytes_to_write) {
+               sr_err("Acquisition failed to start.");
                return SR_ERR;
        }
 
@@ -452,21 +481,21 @@ static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
        devc->cb_data = cb_data;
 
        /* Send header packet to the session bus. */
-       std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);
+       std_session_send_df_header(cb_data, LOG_PREFIX);
 
        /* Time when we should be done (for detecting trigger timeouts). */
-       devc->done = (devc->divcount + 1) * 0.08388608 + time(NULL)
-                       + devc->trigger_timeout;
+       devc->done = (devc->divcount + 1) * devc->prof->trigger_constant +
+                       g_get_monotonic_time() + (10 * G_TIME_SPAN_SECOND);
        devc->block_counter = 0;
        devc->trigger_found = 0;
 
-       /* Hook up a dummy handler to receive data from the LA8. */
+       /* Hook up a dummy handler to receive data from the device. */
        sr_source_add(-1, G_IO_IN, 0, receive_data, (void *)sdi);
 
        return SR_OK;
 }
 
-static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
+static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 {
        struct sr_datafeed_packet packet;
 
@@ -487,17 +516,17 @@ SR_PRIV struct sr_dev_driver chronovu_la8_driver_info = {
        .name = "chronovu-la8",
        .longname = "ChronoVu LA8",
        .api_version = 1,
-       .init = hw_init,
-       .cleanup = hw_cleanup,
-       .scan = hw_scan,
-       .dev_list = hw_dev_list,
-       .dev_clear = clear_instances,
+       .init = init,
+       .cleanup = cleanup,
+       .scan = scan,
+       .dev_list = dev_list,
+       .dev_clear = dev_clear,
        .config_get = config_get,
        .config_set = config_set,
        .config_list = config_list,
-       .dev_open = hw_dev_open,
-       .dev_close = hw_dev_close,
-       .dev_acquisition_start = hw_dev_acquisition_start,
-       .dev_acquisition_stop = hw_dev_acquisition_stop,
+       .dev_open = dev_open,
+       .dev_close = dev_close,
+       .dev_acquisition_start = dev_acquisition_start,
+       .dev_acquisition_stop = dev_acquisition_stop,
        .priv = NULL,
 };