+++ /dev/null
-/*
- * This file is part of the libsigrok project.
- *
- * 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
- * the Free Software Foundation; either version 2 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, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include "protocol.h"
-
-SR_PRIV struct sr_dev_driver chronovu_la_driver_info;
-static struct sr_dev_driver *di = &chronovu_la_driver_info;
-
-static const int32_t hwcaps[] = {
- SR_CONF_LOGIC_ANALYZER,
- SR_CONF_SAMPLERATE,
- SR_CONF_TRIGGER_MATCH,
- SR_CONF_LIMIT_MSEC, /* TODO: Not yet implemented. */
- SR_CONF_LIMIT_SAMPLES, /* TODO: Not yet implemented. */
-};
-
-static const int32_t trigger_matches[] = {
- SR_TRIGGER_ZERO,
- SR_TRIGGER_ONE,
- SR_TRIGGER_RISING,
- SR_TRIGGER_FALLING,
-};
-
-/* 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" },
-};
-
-static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
-
-static void clear_helper(void *priv)
-{
- struct dev_context *devc;
-
- devc = priv;
-
- ftdi_free(devc->ftdic);
- g_free(devc->final_buf);
-}
-
-static int dev_clear(void)
-{
- return std_dev_clear(di, clear_helper);
-}
-
-static int init(struct sr_context *sr_ctx)
-{
- return std_init(sr_ctx, di, LOG_PREFIX);
-}
-
-static int add_device(int idx, int model, GSList **devices)
-{
- int ret;
- unsigned int i;
- struct sr_dev_inst *sdi;
- struct drv_context *drvc;
- struct dev_context *devc;
- struct sr_channel *ch;
-
- ret = SR_OK;
-
- drvc = di->priv;
-
- /* Allocate memory for our private device context. */
- devc = g_try_malloc(sizeof(struct dev_context));
-
- /* Set some sane defaults. */
- 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 = 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;
- 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("Failed to allocate memory for sample buffer.");
- ret = SR_ERR_MALLOC;
- goto err_free_devc;
- }
-
- /* 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,
- "ChronoVu", devc->prof->modelname, NULL);
- if (!sdi) {
- sr_err("Failed to create device instance.");
- ret = SR_ERR;
- goto err_free_final_buf;
- }
- sdi->driver = di;
- sdi->priv = devc;
-
- 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);
- drvc->instances = g_slist_append(drvc->instances, sdi);
-
- return SR_OK;
-
-err_free_dev_inst:
- sr_dev_inst_free(sdi);
-err_free_final_buf:
- g_free(devc->final_buf);
-err_free_devc:
- g_free(devc);
-
- return ret;
-}
-
-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);
- /* Show errors other than "device not found". */
- if (ret < 0 && ret != -3)
- sr_dbg("Error finding/opening device (%d): %s.",
- ret, ftdi_get_error_string(ftdic));
- if (ret < 0)
- continue; /* No device found, or not usable. */
-
- 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 dev_open(struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- int ret;
-
- 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 %s device (%04x:%04x).", devc->prof->modelname,
- devc->usb_vid, devc->usb_pid);
-
- /* Open the device. */
- 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("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("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.");
-
- /* Wait 100ms. */
- g_usleep(100 * 1000);
-
- sdi->status = SR_ST_ACTIVE;
-
- return SR_OK;
-
-err_ftdi_free:
- ftdi_free(devc->ftdic); /* Close device (if open), free FTDI context. */
- devc->ftdic = NULL;
- return ret;
-}
-
-static int dev_close(struct sr_dev_inst *sdi)
-{
- int ret;
- struct dev_context *devc;
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_OK;
-
- 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;
-
- return SR_OK;
-}
-
-static int cleanup(void)
-{
- return dev_clear();
-}
-
-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))
- return SR_ERR_BUG;
- *data = g_variant_new_uint64(devc->cur_samplerate);
- break;
- default:
- return SR_ERR_NA;
- }
-
- return SR_OK;
-}
-
-static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi,
- const struct sr_channel_group *cg)
-{
- struct dev_context *devc;
-
- (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 (cv_set_samplerate(sdi, g_variant_get_uint64(data)) < 0)
- return SR_ERR;
- break;
- case SR_CONF_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 (g_variant_get_uint64(data) == 0)
- return SR_ERR_ARG;
- devc->limit_samples = g_variant_get_uint64(data);
- 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_channel_group *cg)
-{
- GVariant *gvar, *grange[2];
- GVariantBuilder gvb;
- struct dev_context *devc;
-
- (void)cg;
-
- 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:
- 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:
- if (!sdi || !sdi->priv || !(devc = sdi->priv) || !devc->prof)
- return SR_ERR_BUG;
- grange[0] = g_variant_new_uint64(0);
- if (devc->prof->model == CHRONOVU_LA8)
- grange[1] = g_variant_new_uint64(MAX_NUM_SAMPLES);
- else
- grange[1] = g_variant_new_uint64(MAX_NUM_SAMPLES / 2);
- *data = g_variant_new_tuple(grange, 2);
- break;
- case SR_CONF_TRIGGER_MATCH:
- if (!sdi || !sdi->priv || !(devc = sdi->priv) || !devc->prof)
- return SR_ERR_BUG;
- *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
- trigger_matches, devc->prof->num_trigger_matches,
- sizeof(int32_t));
- break;
- default:
- return SR_ERR_NA;
- }
-
- return SR_OK;
-}
-
-static int receive_data(int fd, int revents, void *cb_data)
-{
- int i, ret;
- struct sr_dev_inst *sdi;
- struct dev_context *devc;
-
- (void)fd;
- (void)revents;
-
- if (!(sdi = cb_data)) {
- sr_err("cb_data was NULL.");
- return FALSE;
- }
-
- if (!(devc = sdi->priv)) {
- sr_err("sdi->priv was NULL.");
- return FALSE;
- }
-
- if (!devc->ftdic) {
- sr_err("devc->ftdic was NULL.");
- return FALSE;
- }
-
- /* Get one block of data. */
- if ((ret = cv_read_block(devc)) < 0) {
- sr_err("Failed to read data block: %d.", ret);
- dev_acquisition_stop(sdi, sdi);
- return FALSE;
- }
-
- /* We need to get exactly NUM_BLOCKS blocks (i.e. 8MB) of data. */
- if (devc->block_counter != (NUM_BLOCKS - 1)) {
- devc->block_counter++;
- return TRUE;
- }
-
- sr_dbg("Sampling finished, sending data to session bus now.");
-
- /*
- * All data was received and demangled, send it to the session bus.
- *
- * Note: Due to the method how data is spread across the 8MByte of
- * SDRAM, we can _not_ send it to the session bus in a streaming
- * manner while we receive it. We have to receive and de-mangle the
- * full 8MByte first, only then the whole buffer contains valid data.
- */
- for (i = 0; i < NUM_BLOCKS; i++)
- cv_send_block_to_session_bus(devc, i);
-
- dev_acquisition_stop(sdi, sdi);
-
- return TRUE;
-}
-
-static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
-{
- struct dev_context *devc;
- 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("sdi->priv was NULL.");
- return SR_ERR_BUG;
- }
-
- if (!devc->ftdic) {
- sr_err("devc->ftdic was NULL.");
- return SR_ERR_BUG;
- }
-
- devc->divcount = cv_samplerate_to_divcount(sdi, devc->cur_samplerate);
- if (devc->divcount == 0xff) {
- sr_err("Invalid divcount/samplerate.");
- return SR_ERR;
- }
-
- if (cv_convert_trigger(sdi) != SR_OK) {
- sr_err("Failed to configure trigger.");
- return SR_ERR;
- }
-
- /* Fill acquisition parameters into buf[]. */
- 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 = cv_write(devc, buf, bytes_to_write);
-
- if (bytes_written < 0 || bytes_written != bytes_to_write) {
- sr_err("Acquisition failed to start.");
- return SR_ERR;
- }
-
- sr_dbg("Hardware acquisition started successfully.");
-
- devc->cb_data = cb_data;
-
- /* Send header packet to the session bus. */
- std_session_send_df_header(sdi, LOG_PREFIX);
-
- /* Time when we should be done (for detecting trigger timeouts). */
- 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 device. */
- sr_session_source_add(sdi->session, -1, G_IO_IN, 0, receive_data, (void *)sdi);
-
- return SR_OK;
-}
-
-static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
-{
- struct sr_datafeed_packet packet;
-
- (void)cb_data;
-
- sr_dbg("Stopping acquisition.");
- sr_session_source_remove(sdi->session, -1);
-
- /* Send end packet to the session bus. */
- sr_dbg("Sending SR_DF_END.");
- packet.type = SR_DF_END;
- sr_session_send(sdi, &packet);
-
- return SR_OK;
-}
-
-SR_PRIV struct sr_dev_driver chronovu_la_driver_info = {
- .name = "chronovu-la",
- .longname = "ChronoVu LA8/LA16",
- .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