+++ /dev/null
-/*
- * This file is part of the libsigrok project.
- *
- * Copyright (C) 2014 Daniel Elstner <daniel.kitta@gmail.com>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "protocol.h"
-#include "libsigrok.h"
-#include "libsigrok-internal.h"
-#include <glib.h>
-#include <libusb.h>
-#include <stdlib.h>
-#include <string.h>
-
-static const int32_t hwopts[] = {
- SR_CONF_CONN,
-};
-
-static const int32_t hwcaps[] = {
- SR_CONF_LOGIC_ANALYZER,
- SR_CONF_SAMPLERATE,
- SR_CONF_EXTERNAL_CLOCK,
- SR_CONF_CLOCK_EDGE,
- SR_CONF_TRIGGER_MATCH,
- SR_CONF_TRIGGER_SOURCE,
- SR_CONF_TRIGGER_SLOPE,
- SR_CONF_LIMIT_MSEC,
- SR_CONF_LIMIT_SAMPLES,
-};
-
-static const int32_t trigger_matches[] = {
- SR_TRIGGER_ZERO,
- SR_TRIGGER_ONE,
- SR_TRIGGER_RISING,
- SR_TRIGGER_FALLING,
-};
-
-/* The hardware supports more samplerates than these, but these are the
- * options hardcoded into the vendor's Windows GUI.
- */
-static const uint64_t samplerates[] = {
- SR_MHZ(125), SR_MHZ(100),
- SR_MHZ(50), SR_MHZ(20), SR_MHZ(10),
- SR_MHZ(5), SR_MHZ(2), SR_MHZ(1),
- SR_KHZ(500), SR_KHZ(200), SR_KHZ(100),
- SR_KHZ(50), SR_KHZ(20), SR_KHZ(10),
- SR_KHZ(5), SR_KHZ(2), SR_KHZ(1),
- SR_HZ(500), SR_HZ(200), SR_HZ(100),
-};
-
-/* Names assigned to available trigger sources. Indices must match
- * trigger_source enum values.
- */
-static const char *const trigger_source_names[] = { "CH", "TRG" };
-
-/* Names assigned to available trigger slope choices. Indices must
- * match the signal_edge enum values.
- */
-static const char *const signal_edge_names[] = { "r", "f" };
-
-SR_PRIV struct sr_dev_driver sysclk_lwla_driver_info;
-static struct sr_dev_driver *const di = &sysclk_lwla_driver_info;
-
-static int init(struct sr_context *sr_ctx)
-{
- return std_init(sr_ctx, di, LOG_PREFIX);
-}
-
-static GSList *gen_channel_list(int num_channels)
-{
- GSList *list;
- struct sr_channel *ch;
- int i;
- char name[8];
-
- list = NULL;
-
- for (i = num_channels; i > 0; --i) {
- /* The LWLA series simply number channels from CH1 to CHxx. */
- g_snprintf(name, sizeof(name), "CH%d", i);
-
- ch = sr_channel_new(i - 1, SR_CHANNEL_LOGIC, TRUE, name);
- list = g_slist_prepend(list, ch);
- }
-
- return list;
-}
-
-static struct sr_dev_inst *dev_inst_new(int device_index)
-{
- struct sr_dev_inst *sdi;
- struct dev_context *devc;
-
- /* Allocate memory for our private driver context. */
- devc = g_try_new0(struct dev_context, 1);
- if (!devc) {
- sr_err("Device context malloc failed.");
- return NULL;
- }
-
- /* Register the device with libsigrok. */
- sdi = sr_dev_inst_new(device_index, SR_ST_INACTIVE,
- VENDOR_NAME, MODEL_NAME, NULL);
- if (!sdi) {
- sr_err("Failed to instantiate device.");
- g_free(devc);
- return NULL;
- }
-
- /* Enable all channels to match the default channel configuration. */
- devc->channel_mask = ALL_CHANNELS_MASK;
- devc->samplerate = DEFAULT_SAMPLERATE;
-
- sdi->priv = devc;
- sdi->channels = gen_channel_list(NUM_CHANNELS);
-
- return sdi;
-}
-
-static GSList *scan(GSList *options)
-{
- GSList *usb_devices, *devices, *node;
- struct drv_context *drvc;
- struct sr_dev_inst *sdi;
- struct sr_usb_dev_inst *usb;
- struct sr_config *src;
- const char *conn;
- int device_index;
-
- drvc = di->priv;
- conn = USB_VID_PID;
-
- for (node = options; node != NULL; node = node->next) {
- src = node->data;
- if (src->key == SR_CONF_CONN) {
- conn = g_variant_get_string(src->data, NULL);
- break;
- }
- }
- usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
- devices = NULL;
- device_index = g_slist_length(drvc->instances);
-
- for (node = usb_devices; node != NULL; node = node->next) {
- usb = node->data;
-
- /* Create sigrok device instance. */
- sdi = dev_inst_new(device_index);
- if (!sdi) {
- sr_usb_dev_inst_free(usb);
- continue;
- }
- sdi->driver = di;
- sdi->inst_type = SR_INST_USB;
- sdi->conn = usb;
-
- /* Register device instance with driver. */
- drvc->instances = g_slist_append(drvc->instances, sdi);
- devices = g_slist_append(devices, sdi);
- }
-
- g_slist_free(usb_devices);
-
- return devices;
-}
-
-static GSList *dev_list(void)
-{
- struct drv_context *drvc;
-
- drvc = di->priv;
-
- return drvc->instances;
-}
-
-static void clear_dev_context(void *priv)
-{
- struct dev_context *devc;
-
- devc = priv;
-
- sr_dbg("Device context cleared.");
-
- lwla_free_acquisition_state(devc->acquisition);
- g_free(devc);
-}
-
-static int dev_clear(void)
-{
- return std_dev_clear(di, &clear_dev_context);
-}
-
-static int dev_open(struct sr_dev_inst *sdi)
-{
- struct drv_context *drvc;
- struct sr_usb_dev_inst *usb;
- int ret;
-
- drvc = di->priv;
-
- if (!drvc) {
- sr_err("Driver was not initialized.");
- return SR_ERR;
- }
-
- usb = sdi->conn;
-
- ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb);
- if (ret != SR_OK)
- return ret;
-
- ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
- if (ret < 0) {
- sr_err("Failed to claim interface: %s.",
- libusb_error_name(ret));
- return SR_ERR;
- }
-
- sdi->status = SR_ST_INITIALIZING;
-
- ret = lwla_init_device(sdi);
-
- if (ret == SR_OK)
- sdi->status = SR_ST_ACTIVE;
-
- return ret;
-}
-
-static int dev_close(struct sr_dev_inst *sdi)
-{
- struct sr_usb_dev_inst *usb;
-
- if (!di->priv) {
- sr_err("Driver was not initialized.");
- return SR_ERR;
- }
-
- usb = sdi->conn;
- if (!usb->devhdl)
- return SR_OK;
-
- sdi->status = SR_ST_INACTIVE;
-
- /* Trigger download of the shutdown bitstream. */
- if (lwla_set_clock_config(sdi) != SR_OK)
- sr_err("Unable to shut down device.");
-
- libusb_release_interface(usb->devhdl, USB_INTERFACE);
- libusb_close(usb->devhdl);
-
- usb->devhdl = NULL;
-
- return SR_OK;
-}
-
-static int cleanup(void)
-{
- return dev_clear();
-}
-
-static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
- const struct sr_channel_group *cg)
-{
- struct dev_context *devc;
- size_t idx;
-
- (void)cg;
-
- if (!sdi)
- return SR_ERR_ARG;
-
- devc = sdi->priv;
-
- switch (key) {
- case SR_CONF_SAMPLERATE:
- *data = g_variant_new_uint64(devc->samplerate);
- break;
- case SR_CONF_LIMIT_MSEC:
- *data = g_variant_new_uint64(devc->limit_msec);
- break;
- case SR_CONF_LIMIT_SAMPLES:
- *data = g_variant_new_uint64(devc->limit_samples);
- break;
- case SR_CONF_EXTERNAL_CLOCK:
- *data = g_variant_new_boolean(devc->cfg_clock_source
- == CLOCK_EXT_CLK);
- break;
- case SR_CONF_CLOCK_EDGE:
- idx = devc->cfg_clock_edge;
- if (idx >= G_N_ELEMENTS(signal_edge_names))
- return SR_ERR_BUG;
- *data = g_variant_new_string(signal_edge_names[idx]);
- break;
- case SR_CONF_TRIGGER_SOURCE:
- idx = devc->cfg_trigger_source;
- if (idx >= G_N_ELEMENTS(trigger_source_names))
- return SR_ERR_BUG;
- *data = g_variant_new_string(trigger_source_names[idx]);
- break;
- case SR_CONF_TRIGGER_SLOPE:
- idx = devc->cfg_trigger_slope;
- if (idx >= G_N_ELEMENTS(signal_edge_names))
- return SR_ERR_BUG;
- *data = g_variant_new_string(signal_edge_names[idx]);
- break;
- default:
- return SR_ERR_NA;
- }
-
- return SR_OK;
-}
-
-/* Helper for mapping a string-typed configuration value to an index
- * within a table of possible values.
- */
-static int lookup_index(GVariant *value, const char *const *table, int len)
-{
- const char *entry;
- int i;
-
- entry = g_variant_get_string(value, NULL);
- if (!entry)
- return -1;
-
- /* Linear search is fine for very small tables. */
- for (i = 0; i < len; ++i) {
- if (strcmp(entry, table[i]) == 0)
- return i;
- }
- return -1;
-}
-
-static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
- const struct sr_channel_group *cg)
-{
- uint64_t value;
- struct dev_context *devc;
- int idx;
-
- (void)cg;
-
- devc = sdi->priv;
- if (!devc)
- return SR_ERR_DEV_CLOSED;
-
- switch (key) {
- case SR_CONF_SAMPLERATE:
- value = g_variant_get_uint64(data);
- if (value < samplerates[G_N_ELEMENTS(samplerates) - 1]
- || value > samplerates[0])
- return SR_ERR_SAMPLERATE;
- devc->samplerate = value;
- break;
- case SR_CONF_LIMIT_MSEC:
- value = g_variant_get_uint64(data);
- if (value > MAX_LIMIT_MSEC)
- return SR_ERR_ARG;
- devc->limit_msec = value;
- break;
- case SR_CONF_LIMIT_SAMPLES:
- value = g_variant_get_uint64(data);
- if (value > MAX_LIMIT_SAMPLES)
- return SR_ERR_ARG;
- devc->limit_samples = value;
- break;
- case SR_CONF_EXTERNAL_CLOCK:
- devc->cfg_clock_source = (g_variant_get_boolean(data))
- ? CLOCK_EXT_CLK : CLOCK_INTERNAL;
- break;
- case SR_CONF_CLOCK_EDGE:
- idx = lookup_index(data, signal_edge_names,
- G_N_ELEMENTS(signal_edge_names));
- if (idx < 0)
- return SR_ERR_ARG;
- devc->cfg_clock_edge = idx;
- break;
- case SR_CONF_TRIGGER_SOURCE:
- idx = lookup_index(data, trigger_source_names,
- G_N_ELEMENTS(trigger_source_names));
- if (idx < 0)
- return SR_ERR_ARG;
- devc->cfg_trigger_source = idx;
- break;
- case SR_CONF_TRIGGER_SLOPE:
- idx = lookup_index(data, signal_edge_names,
- G_N_ELEMENTS(signal_edge_names));
- if (idx < 0)
- return SR_ERR_ARG;
- devc->cfg_trigger_slope = idx;
- break;
- default:
- return SR_ERR_NA;
- }
-
- return SR_OK;
-}
-
-static int config_channel_set(const struct sr_dev_inst *sdi,
- struct sr_channel *ch, unsigned int changes)
-{
- uint64_t channel_bit;
- struct dev_context *devc;
-
- devc = sdi->priv;
- if (!devc)
- return SR_ERR_DEV_CLOSED;
-
- if (ch->index < 0 || ch->index >= NUM_CHANNELS) {
- sr_err("Channel index %d out of range.", ch->index);
- return SR_ERR_BUG;
- }
- channel_bit = (uint64_t)1 << ch->index;
-
- if ((changes & SR_CHANNEL_SET_ENABLED) != 0) {
- /* Enable or disable input channel for this channel. */
- if (ch->enabled)
- devc->channel_mask |= channel_bit;
- else
- devc->channel_mask &= ~channel_bit;
- }
-
- return SR_OK;
-}
-
-static int config_commit(const struct sr_dev_inst *sdi)
-{
- if (sdi->status != SR_ST_ACTIVE) {
- sr_err("Device not ready (status %d).", (int)sdi->status);
- return SR_ERR;
- }
-
- return lwla_set_clock_config(sdi);
-}
-
-static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
- const struct sr_channel_group *cg)
-{
- GVariant *gvar;
- GVariantBuilder gvb;
-
- (void)sdi;
- (void)cg;
-
- switch (key) {
- case SR_CONF_SCAN_OPTIONS:
- *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
- hwopts, G_N_ELEMENTS(hwopts), sizeof(int32_t));
- break;
- case SR_CONF_DEVICE_OPTIONS:
- *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
- hwcaps, G_N_ELEMENTS(hwcaps), sizeof(int32_t));
- break;
- case SR_CONF_SAMPLERATE:
- g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
- gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
- samplerates, G_N_ELEMENTS(samplerates),
- sizeof(uint64_t));
- g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
- *data = g_variant_builder_end(&gvb);
- break;
- case SR_CONF_TRIGGER_MATCH:
- *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
- trigger_matches, ARRAY_SIZE(trigger_matches),
- sizeof(int32_t));
- break;
- case SR_CONF_TRIGGER_SOURCE:
- *data = g_variant_new_strv(trigger_source_names,
- G_N_ELEMENTS(trigger_source_names));
- break;
- case SR_CONF_TRIGGER_SLOPE:
- case SR_CONF_CLOCK_EDGE:
- *data = g_variant_new_strv(signal_edge_names,
- G_N_ELEMENTS(signal_edge_names));
- break;
- default:
- return SR_ERR_NA;
- }
-
- return SR_OK;
-}
-
-static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
-{
- struct drv_context *drvc;
- struct dev_context *devc;
- struct acquisition_state *acq;
- int ret;
-
- (void)cb_data;
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
-
- devc = sdi->priv;
- drvc = di->priv;
-
- if (devc->acquisition) {
- sr_err("Acquisition still in progress?");
- return SR_ERR;
- }
- acq = lwla_alloc_acquisition_state();
- if (!acq)
- return SR_ERR_MALLOC;
-
- devc->stopping_in_progress = FALSE;
- devc->transfer_error = FALSE;
-
- sr_info("Starting acquisition.");
-
- devc->acquisition = acq;
- lwla_convert_trigger(sdi);
- ret = lwla_setup_acquisition(sdi);
- if (ret != SR_OK) {
- sr_err("Failed to set up acquisition.");
- devc->acquisition = NULL;
- lwla_free_acquisition_state(acq);
- return ret;
- }
-
- ret = lwla_start_acquisition(sdi);
- if (ret != SR_OK) {
- sr_err("Failed to start acquisition.");
- devc->acquisition = NULL;
- lwla_free_acquisition_state(acq);
- return ret;
- }
- usb_source_add(sdi->session, drvc->sr_ctx, 100, &lwla_receive_data,
- (struct sr_dev_inst *)sdi);
-
- sr_info("Waiting for data.");
-
- /* Send header packet to the session bus. */
- std_session_send_df_header(sdi, LOG_PREFIX);
-
- return SR_OK;
-}
-
-static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
-{
- (void)cb_data;
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
-
- sr_dbg("Stopping acquisition.");
-
- sdi->status = SR_ST_STOPPING;
-
- return SR_OK;
-}
-
-SR_PRIV struct sr_dev_driver sysclk_lwla_driver_info = {
- .name = "sysclk-lwla",
- .longname = "SysClk LWLA series",
- .api_version = 1,
- .init = init,
- .cleanup = cleanup,
- .scan = scan,
- .dev_list = dev_list,
- .dev_clear = dev_clear,
- .config_get = config_get,
- .config_set = config_set,
- .config_channel_set = config_channel_set,
- .config_commit = config_commit,
- .config_list = config_list,
- .dev_open = dev_open,
- .dev_close = dev_close,
- .dev_acquisition_start = dev_acquisition_start,
- .dev_acquisition_stop = dev_acquisition_stop,
- .priv = NULL,
-};
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