+++ /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 hwcaps[] = {
- SR_CONF_LOGIC_ANALYZER,
- SR_CONF_SAMPLERATE,
- SR_CONF_EXTERNAL_CLOCK,
- SR_CONF_TRIGGER_TYPE,
- SR_CONF_LIMIT_SAMPLES,
-};
-
-/* 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),
-};
-
-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_probe_list(int num_probes)
-{
- GSList *list;
- struct sr_probe *probe;
- int i;
- char name[8];
-
- list = NULL;
-
- for (i = num_probes; i > 0; --i) {
- /* The LWLA series simply number probes from CH1 to CHxx. */
- g_ascii_formatd(name, sizeof name, "CH%.0f", i);
-
- probe = sr_probe_new(i - 1, SR_PROBE_LOGIC, TRUE, name);
- list = g_slist_prepend(list, probe);
- }
-
- return list;
-}
-
-static GSList *scan(GSList *options)
-{
- GSList *usb_devices, *devices, *node;
- struct drv_context *drvc;
- struct sr_dev_inst *sdi;
- struct dev_context *devc;
- struct sr_usb_dev_inst *usb;
- struct sr_config *src;
- const char *conn;
- int device_index;
-
- drvc = di->priv;
- drvc->instances = NULL;
- 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 = 0;
-
- for (node = usb_devices; node != NULL; node = node->next) {
- usb = node->data;
-
- /* Allocate memory for our private driver context. */
- devc = g_try_new0(struct dev_context, 1);
- if (!devc) {
- sr_err("Device context malloc failed.");
- sr_usb_dev_inst_free(usb);
- continue;
- }
- /* 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);
- sr_usb_dev_inst_free(usb);
- continue;
- }
- sdi->driver = di;
- sdi->priv = devc;
- sdi->inst_type = SR_INST_USB;
- sdi->conn = usb;
- sdi->probes = gen_probe_list(NUM_PROBES);
-
- 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 dev_context *devc;
- 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;
- devc = sdi->priv;
-
- 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;
-
- if (devc->samplerate == 0)
- /* Apply default if the samplerate hasn't been set yet. */
- devc->samplerate = DEFAULT_SAMPLERATE;
-
- 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;
- struct dev_context *devc;
-
- if (!di->priv) {
- sr_err("Driver was not initialized.");
- return SR_ERR;
- }
-
- usb = sdi->conn;
- devc = sdi->priv;
-
- if (!usb->devhdl)
- return SR_OK;
-
- /* Trigger download of the shutdown bitstream. */
- devc->selected_clock_source = CLOCK_SOURCE_NONE;
-
- if (lwla_set_clock_source(sdi) != SR_OK)
- sr_err("Unable to shut down device.");
-
- libusb_release_interface(usb->devhdl, USB_INTERFACE);
- libusb_close(usb->devhdl);
-
- usb->devhdl = NULL;
- sdi->status = SR_ST_INACTIVE;
-
- 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_probe_group *probe_group)
-{
- struct dev_context *devc;
-
- (void)probe_group;
-
- 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_SAMPLES:
- *data = g_variant_new_uint64(devc->limit_samples);
- break;
- case SR_CONF_EXTERNAL_CLOCK:
- *data = g_variant_new_boolean(devc->selected_clock_source
- >= CLOCK_SOURCE_EXT_RISE);
- break;
- default:
- return SR_ERR_NA;
- }
-
- return SR_OK;
-}
-
-static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
- const struct sr_probe_group *probe_group)
-{
- struct dev_context *devc;
- uint64_t rate;
-
- (void)probe_group;
-
- devc = sdi->priv;
- if (!devc)
- return SR_ERR_DEV_CLOSED;
-
- switch (key) {
- case SR_CONF_SAMPLERATE:
- rate = g_variant_get_uint64(data);
- sr_info("Setting samplerate %" G_GUINT64_FORMAT, rate);
- if (rate > samplerates[0]
- || rate < samplerates[G_N_ELEMENTS(samplerates) - 1])
- return SR_ERR_SAMPLERATE;
- devc->samplerate = rate;
- break;
- case SR_CONF_LIMIT_SAMPLES:
- devc->limit_samples = g_variant_get_uint64(data);
- break;
- case SR_CONF_EXTERNAL_CLOCK:
- if (g_variant_get_boolean(data)) {
- sr_info("Enabling external clock.");
- /* TODO: Allow the external clock to be inverted */
- devc->selected_clock_source = CLOCK_SOURCE_EXT_RISE;
- } else {
- sr_info("Disabling external clock.");
- devc->selected_clock_source = CLOCK_SOURCE_INT;
- }
- if (sdi->status == SR_ST_ACTIVE)
- return lwla_set_clock_source(sdi);
- break;
- default:
- return SR_ERR_NA;
- }
-
- return SR_OK;
-}
-
-static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
- const struct sr_probe_group *probe_group)
-{
- GVariant *gvar;
- GVariantBuilder gvb;
-
- (void)sdi;
- (void)probe_group;
-
- switch (key) {
- case SR_CONF_DEVICE_OPTIONS:
- *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
- hwcaps, ARRAY_SIZE(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, ARRAY_SIZE(samplerates),
- sizeof(uint64_t));
- g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
- *data = g_variant_builder_end(&gvb);
- break;
- case SR_CONF_TRIGGER_TYPE:
- *data = g_variant_new_string(TRIGGER_TYPES);
- break;
- default:
- return SR_ERR_NA;
- }
-
- return SR_OK;
-}
-
-static int configure_probes(const struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- const struct sr_probe *probe;
- const GSList *node;
- uint64_t probe_bit;
-
- devc = sdi->priv;
-
- devc->channel_mask = 0;
- devc->trigger_mask = 0;
- devc->trigger_edge_mask = 0;
- devc->trigger_values = 0;
-
- for (node = sdi->probes, probe_bit = 1;
- node != NULL;
- node = node->next, probe_bit <<= 1) {
-
- if (probe_bit >= ((uint64_t)1 << NUM_PROBES)) {
- sr_err("Channels over the limit of %d.", NUM_PROBES);
- return SR_ERR;
- }
- probe = node->data;
- if (!probe || !probe->enabled)
- continue;
-
- /* Enable input channel for this probe. */
- devc->channel_mask |= probe_bit;
-
- if (!probe->trigger || probe->trigger[0] == '\0')
- continue;
-
- if (probe->trigger[1] != '\0') {
- sr_err("Only one trigger stage is supported.");
- return SR_ERR;
- }
- /* Enable trigger for this probe. */
- devc->trigger_mask |= probe_bit;
-
- /* Configure edge mask and trigger value. */
- switch (probe->trigger[0]) {
- case '1': devc->trigger_values |= probe_bit;
- case '0': break;
-
- case 'r': devc->trigger_values |= probe_bit;
- case 'f': devc->trigger_edge_mask |= probe_bit;
- break;
- default:
- sr_err("Trigger type '%c' is not supported.",
- probe->trigger[0]);
- return SR_ERR;
- }
- }
- 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;
-
- ret = configure_probes(sdi);
- if (ret != SR_OK) {
- sr_err("Failed to configure probes.");
- lwla_free_acquisition_state(acq);
- return ret;
- }
-
- sr_info("Starting acquisition.");
-
- devc->acquisition = acq;
- ret = lwla_setup_acquisition(sdi);
- if (ret != SR_OK) {
- sr_err("Failed to set up aquisition.");
- devc->acquisition = NULL;
- lwla_free_acquisition_state(acq);
- return ret;
- }
-
- ret = lwla_start_acquisition(sdi);
- if (ret != SR_OK) {
- sr_err("Failed to start aquisition.");
- devc->acquisition = NULL;
- lwla_free_acquisition_state(acq);
- return ret;
- }
- usb_source_add(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_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,
-};
projects / libsigrok.git / blobdiff