+++ /dev/null
-/*
- * This file is part of the libsigrok project.
- *
- * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
- * Copyright (C) 2011 Olivier Fauchon <olivier@aixmarseille.com>
- * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@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 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 <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <math.h>
-#ifdef _WIN32
-#include <io.h>
-#include <fcntl.h>
-#define pipe(fds) _pipe(fds, 4096, _O_BINARY)
-#endif
-#include "libsigrok.h"
-#include "libsigrok-internal.h"
-
-#define LOG_PREFIX "demo"
-
-#define DEFAULT_NUM_LOGIC_CHANNELS 8
-#define DEFAULT_NUM_ANALOG_CHANNELS 4
-
-/* The size in bytes of chunks to send through the session bus. */
-#define LOGIC_BUFSIZE 4096
-/* Size of the analog pattern space per channel. */
-#define ANALOG_BUFSIZE 4096
-
-#define ANALOG_AMPLITUDE 25
-#define ANALOG_SAMPLES_PER_PERIOD 20
-
-/* Logic patterns we can generate. */
-enum {
- /**
- * Spells "sigrok" across 8 channels using '0's (with '1's as
- * "background") when displayed using the 'bits' output format.
- * The pattern is repeated every 8 channels, shifted to the right
- * in time by one bit.
- */
- PATTERN_SIGROK,
-
- /** Pseudo-random values on all channels. */
- PATTERN_RANDOM,
-
- /**
- * Incrementing number across 8 channels. The pattern is repeated
- * every 8 channels, shifted to the right in time by one bit.
- */
- PATTERN_INC,
-
- /** All channels have a low logic state. */
- PATTERN_ALL_LOW,
-
- /** All channels have a high logic state. */
- PATTERN_ALL_HIGH,
-};
-
-/* Analog patterns we can generate. */
-enum {
- /**
- * Square wave.
- */
- PATTERN_SQUARE,
- PATTERN_SINE,
- PATTERN_TRIANGLE,
- PATTERN_SAWTOOTH,
-};
-
-static const char *logic_pattern_str[] = {
- "sigrok",
- "random",
- "incremental",
- "all-low",
- "all-high",
-};
-
-static const char *analog_pattern_str[] = {
- "square",
- "sine",
- "triangle",
- "sawtooth",
-};
-
-struct analog_gen {
- int pattern;
- float pattern_data[ANALOG_BUFSIZE];
- unsigned int num_samples;
- struct sr_datafeed_analog packet;
-};
-
-/* Private, per-device-instance driver context. */
-struct dev_context {
- int pipe_fds[2];
- GIOChannel *channel;
- uint64_t cur_samplerate;
- uint64_t limit_samples;
- uint64_t limit_msec;
- uint64_t logic_counter;
- uint64_t analog_counter;
- int64_t starttime;
- uint64_t step;
- /* Logic */
- int32_t num_logic_channels;
- unsigned int logic_unitsize;
- /* There is only ever one logic channel group, so its pattern goes here. */
- uint8_t logic_pattern;
- unsigned char logic_data[LOGIC_BUFSIZE];
- /* Analog */
- int32_t num_analog_channels;
- GSList *analog_channel_groups;
-};
-
-static const int32_t scanopts[] = {
- SR_CONF_NUM_LOGIC_CHANNELS,
- SR_CONF_NUM_ANALOG_CHANNELS,
-};
-
-static const int devopts[] = {
- SR_CONF_LOGIC_ANALYZER,
- SR_CONF_DEMO_DEV,
- SR_CONF_SAMPLERATE,
- SR_CONF_LIMIT_SAMPLES,
- SR_CONF_LIMIT_MSEC,
-};
-
-static const int devopts_cg[] = {
- SR_CONF_PATTERN_MODE,
-};
-
-static const uint64_t samplerates[] = {
- SR_HZ(1),
- SR_GHZ(1),
- SR_HZ(1),
-};
-
-static uint8_t pattern_sigrok[] = {
- 0x4c, 0x92, 0x92, 0x92, 0x64, 0x00, 0x00, 0x00,
- 0x82, 0xfe, 0xfe, 0x82, 0x00, 0x00, 0x00, 0x00,
- 0x7c, 0x82, 0x82, 0x92, 0x74, 0x00, 0x00, 0x00,
- 0xfe, 0x12, 0x12, 0x32, 0xcc, 0x00, 0x00, 0x00,
- 0x7c, 0x82, 0x82, 0x82, 0x7c, 0x00, 0x00, 0x00,
- 0xfe, 0x10, 0x28, 0x44, 0x82, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0xbe, 0xbe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-};
-
-SR_PRIV struct sr_dev_driver demo_driver_info;
-static struct sr_dev_driver *di = &demo_driver_info;
-
-static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
-
-
-static int init(struct sr_context *sr_ctx)
-{
- return std_init(sr_ctx, di, LOG_PREFIX);
-}
-
-static void generate_analog_pattern(const struct sr_channel_group *cg, uint64_t sample_rate)
-{
- struct analog_gen *ag;
- double t, frequency;
- float value;
- unsigned int num_samples, i;
- int last_end;
-
- ag = cg->priv;
- num_samples = ANALOG_BUFSIZE / sizeof(float);
-
- sr_dbg("Generating %s pattern for channel group %s",
- analog_pattern_str[ag->pattern], cg->name);
-
- switch (ag->pattern) {
- case PATTERN_SQUARE:
- value = ANALOG_AMPLITUDE;
- last_end = 0;
- for (i = 0; i < num_samples; i++) {
- if (i % 5 == 0)
- value = -value;
- if (i % 10 == 0)
- last_end = i - 1;
- ag->pattern_data[i] = value;
- }
- ag->num_samples = last_end;
- break;
-
- case PATTERN_SINE:
- frequency = (double) sample_rate / ANALOG_SAMPLES_PER_PERIOD;
-
- /* Make sure the number of samples we put out is an integer
- * multiple of our period size */
- /* FIXME we actually need only one period. A ringbuffer would be
- * usefull here.*/
- while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0)
- num_samples--;
-
- for (i = 0; i < num_samples; i++) {
- t = (double) i / (double) sample_rate;
- ag->pattern_data[i] = ANALOG_AMPLITUDE *
- sin(2 * M_PI * frequency * t);
- }
-
- ag->num_samples = num_samples;
- break;
-
- case PATTERN_TRIANGLE:
- frequency = (double) sample_rate / ANALOG_SAMPLES_PER_PERIOD;
-
- while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0)
- num_samples--;
-
- for (i = 0; i < num_samples; i++) {
- t = (double) i / (double) sample_rate;
- ag->pattern_data[i] = (2 * ANALOG_AMPLITUDE / M_PI) *
- asin(sin(2 * M_PI * frequency * t));
- }
-
- ag->num_samples = num_samples;
- break;
-
- case PATTERN_SAWTOOTH:
- frequency = (double) sample_rate / ANALOG_SAMPLES_PER_PERIOD;
-
- while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0)
- num_samples--;
-
- for (i = 0; i < num_samples; i++) {
- t = (double) i / (double) sample_rate;
- ag->pattern_data[i] = 2 * ANALOG_AMPLITUDE *
- ((t * frequency) - floor(0.5f + t * frequency));
- }
-
- ag->num_samples = num_samples;
- break;
- }
-}
-
-static GSList *scan(GSList *options)
-{
- struct drv_context *drvc;
- struct dev_context *devc;
- struct sr_dev_inst *sdi;
- struct sr_channel *ch;
- struct sr_channel_group *cg;
- struct sr_config *src;
- struct analog_gen *ag;
- GSList *devices, *l;
- int num_logic_channels, num_analog_channels, pattern, i;
- char channel_name[16];
-
- drvc = di->priv;
-
- num_logic_channels = DEFAULT_NUM_LOGIC_CHANNELS;
- num_analog_channels = DEFAULT_NUM_ANALOG_CHANNELS;
- for (l = options; l; l = l->next) {
- src = l->data;
- switch (src->key) {
- case SR_CONF_NUM_LOGIC_CHANNELS:
- num_logic_channels = g_variant_get_int32(src->data);
- break;
- case SR_CONF_NUM_ANALOG_CHANNELS:
- num_analog_channels = g_variant_get_int32(src->data);
- break;
- }
- }
-
- devices = NULL;
- sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, "Demo device", NULL, NULL);
- if (!sdi) {
- sr_err("Device instance creation failed.");
- return NULL;
- }
- sdi->driver = di;
-
- if (!(devc = g_try_malloc(sizeof(struct dev_context)))) {
- sr_err("Device context malloc failed.");
- return NULL;
- }
- devc->cur_samplerate = SR_KHZ(200);
- devc->limit_samples = 0;
- devc->limit_msec = 0;
- devc->step = 0;
- devc->num_logic_channels = num_logic_channels;
- devc->logic_unitsize = (devc->num_logic_channels + 7) / 8;
- devc->logic_pattern = PATTERN_SIGROK;
- devc->num_analog_channels = num_analog_channels;
- devc->analog_channel_groups = NULL;
-
- /* Logic channels, all in one channel group. */
- if (!(cg = g_try_malloc(sizeof(struct sr_channel_group))))
- return NULL;
- cg->name = g_strdup("Logic");
- cg->channels = NULL;
- cg->priv = NULL;
- for (i = 0; i < num_logic_channels; i++) {
- sprintf(channel_name, "D%d", i);
- if (!(ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, channel_name)))
- return NULL;
- sdi->channels = g_slist_append(sdi->channels, ch);
- cg->channels = g_slist_append(cg->channels, ch);
- }
- sdi->channel_groups = g_slist_append(NULL, cg);
-
- /* Analog channels, channel groups and pattern generators. */
-
- pattern = 0;
- for (i = 0; i < num_analog_channels; i++) {
- sprintf(channel_name, "A%d", i);
- if (!(ch = sr_channel_new(i + num_logic_channels,
- SR_CHANNEL_ANALOG, TRUE, channel_name)))
- return NULL;
- sdi->channels = g_slist_append(sdi->channels, ch);
-
- /* Every analog channel gets its own channel group. */
- if (!(cg = g_try_malloc(sizeof(struct sr_channel_group))))
- return NULL;
- cg->name = g_strdup(channel_name);
- cg->channels = g_slist_append(NULL, ch);
-
- /* Every channel group gets a generator struct. */
- if (!(ag = g_try_malloc(sizeof(struct analog_gen))))
- return NULL;
- ag->packet.channels = cg->channels;
- ag->packet.mq = 0;
- ag->packet.mqflags = 0;
- ag->packet.unit = SR_UNIT_VOLT;
- ag->packet.data = ag->pattern_data;
- ag->pattern = pattern;
- cg->priv = ag;
-
- sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
- devc->analog_channel_groups = g_slist_append(devc->analog_channel_groups, cg);
-
- if (++pattern == ARRAY_SIZE(analog_pattern_str))
- pattern = 0;
- }
-
- sdi->priv = devc;
- devices = g_slist_append(devices, sdi);
- drvc->instances = g_slist_append(drvc->instances, sdi);
-
- return devices;
-}
-
-static GSList *dev_list(void)
-{
- return ((struct drv_context *)(di->priv))->instances;
-}
-
-static int dev_open(struct sr_dev_inst *sdi)
-{
- sdi->status = SR_ST_ACTIVE;
-
- return SR_OK;
-}
-
-static int dev_close(struct sr_dev_inst *sdi)
-{
- sdi->status = SR_ST_INACTIVE;
-
- return SR_OK;
-}
-
-static int cleanup(void)
-{
- return std_dev_clear(di, NULL);
-}
-
-static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi,
- const struct sr_channel_group *cg)
-{
- struct dev_context *devc;
- struct sr_channel *ch;
- struct analog_gen *ag;
- int pattern;
-
- if (!sdi)
- return SR_ERR_ARG;
-
- devc = sdi->priv;
- switch (id) {
- case SR_CONF_SAMPLERATE:
- *data = g_variant_new_uint64(devc->cur_samplerate);
- break;
- case SR_CONF_LIMIT_SAMPLES:
- *data = g_variant_new_uint64(devc->limit_samples);
- break;
- case SR_CONF_LIMIT_MSEC:
- *data = g_variant_new_uint64(devc->limit_msec);
- break;
- case SR_CONF_PATTERN_MODE:
- if (!cg)
- return SR_ERR_CHANNEL_GROUP;
- ch = cg->channels->data;
- if (ch->type == SR_CHANNEL_LOGIC) {
- pattern = devc->logic_pattern;
- *data = g_variant_new_string(logic_pattern_str[pattern]);
- } else if (ch->type == SR_CHANNEL_ANALOG) {
- ag = cg->priv;
- pattern = ag->pattern;
- *data = g_variant_new_string(analog_pattern_str[pattern]);
- } else
- return SR_ERR_BUG;
- break;
- case SR_CONF_NUM_LOGIC_CHANNELS:
- *data = g_variant_new_int32(devc->num_logic_channels);
- break;
- case SR_CONF_NUM_ANALOG_CHANNELS:
- *data = g_variant_new_int32(devc->num_analog_channels);
- 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;
- struct analog_gen *ag;
- struct sr_channel *ch;
- int pattern, ret;
- unsigned int i;
- const char *stropt;
-
- devc = sdi->priv;
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
-
- ret = SR_OK;
- switch (id) {
- case SR_CONF_SAMPLERATE:
- devc->cur_samplerate = g_variant_get_uint64(data);
- sr_dbg("Setting samplerate to %" PRIu64, devc->cur_samplerate);
- break;
- case SR_CONF_LIMIT_SAMPLES:
- devc->limit_msec = 0;
- devc->limit_samples = g_variant_get_uint64(data);
- sr_dbg("Setting sample limit to %" PRIu64, devc->limit_samples);
- break;
- case SR_CONF_LIMIT_MSEC:
- devc->limit_msec = g_variant_get_uint64(data);
- devc->limit_samples = 0;
- sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec);
- break;
- case SR_CONF_PATTERN_MODE:
- if (!cg)
- return SR_ERR_CHANNEL_GROUP;
- stropt = g_variant_get_string(data, NULL);
- ch = cg->channels->data;
- pattern = -1;
- if (ch->type == SR_CHANNEL_LOGIC) {
- for (i = 0; i < ARRAY_SIZE(logic_pattern_str); i++) {
- if (!strcmp(stropt, logic_pattern_str[i])) {
- pattern = i;
- break;
- }
- }
- if (pattern == -1)
- return SR_ERR_ARG;
- devc->logic_pattern = pattern;
-
- /* Might as well do this now, these are static. */
- if (pattern == PATTERN_ALL_LOW)
- memset(devc->logic_data, 0x00, LOGIC_BUFSIZE);
- else if (pattern == PATTERN_ALL_HIGH)
- memset(devc->logic_data, 0xff, LOGIC_BUFSIZE);
- sr_dbg("Setting logic pattern to %s",
- logic_pattern_str[pattern]);
- } else if (ch->type == SR_CHANNEL_ANALOG) {
- for (i = 0; i < ARRAY_SIZE(analog_pattern_str); i++) {
- if (!strcmp(stropt, analog_pattern_str[i])) {
- pattern = i;
- break;
- }
- }
- if (pattern == -1)
- return SR_ERR_ARG;
- sr_dbg("Setting analog pattern for channel group %s to %s",
- cg->name, analog_pattern_str[pattern]);
- ag = cg->priv;
- ag->pattern = pattern;
- } else
- return SR_ERR_BUG;
- break;
- default:
- ret = SR_ERR_NA;
- }
-
- return ret;
-}
-
-static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
- const struct sr_channel_group *cg)
-{
- struct sr_channel *ch;
- GVariant *gvar;
- GVariantBuilder gvb;
-
- (void)sdi;
-
- if (key == SR_CONF_SCAN_OPTIONS) {
- *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
- scanopts, ARRAY_SIZE(scanopts), sizeof(int32_t));
- return SR_OK;
- }
-
- if (!sdi)
- return SR_ERR_ARG;
-
- if (!cg) {
- switch (key) {
- case SR_CONF_DEVICE_OPTIONS:
- *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
- devopts, ARRAY_SIZE(devopts), 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}", "samplerate-steps", gvar);
- *data = g_variant_builder_end(&gvb);
- break;
- default:
- return SR_ERR_NA;
- }
- } else {
- ch = cg->channels->data;
- switch (key) {
- case SR_CONF_DEVICE_OPTIONS:
- *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
- devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(int32_t));
- break;
- case SR_CONF_PATTERN_MODE:
- if (ch->type == SR_CHANNEL_LOGIC)
- *data = g_variant_new_strv(logic_pattern_str,
- ARRAY_SIZE(logic_pattern_str));
- else if (ch->type == SR_CHANNEL_ANALOG)
- *data = g_variant_new_strv(analog_pattern_str,
- ARRAY_SIZE(analog_pattern_str));
- else
- return SR_ERR_BUG;
- break;
- default:
- return SR_ERR_NA;
- }
- }
-
- return SR_OK;
-}
-
-static void logic_generator(struct sr_dev_inst *sdi, uint64_t size)
-{
- struct dev_context *devc;
- uint64_t i, j;
- uint8_t pat;
-
- devc = sdi->priv;
-
- switch (devc->logic_pattern) {
- case PATTERN_SIGROK:
- memset(devc->logic_data, 0x00, size);
- for (i = 0; i < size; i += devc->logic_unitsize) {
- for (j = 0; j < devc->logic_unitsize; j++) {
- pat = pattern_sigrok[(devc->step + j) % sizeof(pattern_sigrok)] >> 1;
- devc->logic_data[i + j] = ~pat;
- }
- devc->step++;
- }
- break;
- case PATTERN_RANDOM:
- for (i = 0; i < size; i++)
- devc->logic_data[i] = (uint8_t)(rand() & 0xff);
- break;
- case PATTERN_INC:
- for (i = 0; i < size; i++) {
- for (j = 0; j < devc->logic_unitsize; j++) {
- devc->logic_data[i + j] = devc->step;
- }
- devc->step++;
- }
- break;
- case PATTERN_ALL_LOW:
- case PATTERN_ALL_HIGH:
- /* These were set when the pattern mode was selected. */
- break;
- default:
- sr_err("Unknown pattern: %d.", devc->logic_pattern);
- break;
- }
-}
-
-/* Callback handling data */
-static int prepare_data(int fd, int revents, void *cb_data)
-{
- struct sr_dev_inst *sdi;
- struct dev_context *devc;
- struct sr_datafeed_packet packet;
- struct sr_datafeed_logic logic;
- struct sr_channel_group *cg;
- struct analog_gen *ag;
- GSList *l;
- uint64_t logic_todo, analog_todo, expected_samplenum, analog_samples, sending_now;
- int64_t time, elapsed;
-
- (void)fd;
- (void)revents;
-
- sdi = cb_data;
- devc = sdi->priv;
-
- /* How many "virtual" samples should we have collected by now? */
- time = g_get_monotonic_time();
- elapsed = time - devc->starttime;
- expected_samplenum = elapsed * devc->cur_samplerate / 1000000;
-
- /* Of those, how many do we still have to send? */
- logic_todo = MIN(expected_samplenum, devc->limit_samples) - devc->logic_counter;
- analog_todo = MIN(expected_samplenum, devc->limit_samples) - devc->analog_counter;
-
- while (logic_todo || analog_todo) {
- /* Logic */
- if (devc->num_logic_channels > 0 && logic_todo > 0) {
- sending_now = MIN(logic_todo,
- LOGIC_BUFSIZE / devc->logic_unitsize);
- logic_generator(sdi, sending_now * devc->logic_unitsize);
- packet.type = SR_DF_LOGIC;
- packet.payload = &logic;
- logic.length = sending_now * devc->logic_unitsize;
- logic.unitsize = devc->logic_unitsize;
- logic.data = devc->logic_data;
- sr_session_send(sdi, &packet);
- logic_todo -= sending_now;
- devc->logic_counter += sending_now;
- }
-
- /* Analog, one channel at a time */
- if (devc->num_analog_channels > 0 && analog_todo > 0) {
- sending_now = 0;
- for (l = devc->analog_channel_groups; l; l = l->next) {
- cg = l->data;
- ag = cg->priv;
- packet.type = SR_DF_ANALOG;
- packet.payload = &ag->packet;
-
- /* FIXME we should make sure we output a whole
- * period of data before we send out again the
- * beginning of our buffer. A ring buffer would
- * help here as well */
-
- analog_samples = MIN(analog_todo, ag->num_samples);
- /* Whichever channel group gets there first. */
- sending_now = MAX(sending_now, analog_samples);
- ag->packet.num_samples = analog_samples;
- sr_session_send(sdi, &packet);
- }
- analog_todo -= sending_now;
- devc->analog_counter += sending_now;
- }
- }
-
- if (devc->logic_counter >= devc->limit_samples &&
- devc->analog_counter >= devc->limit_samples) {
- sr_dbg("Requested number of samples reached.");
- dev_acquisition_stop(sdi, cb_data);
- return TRUE;
- }
-
- return TRUE;
-}
-
-static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
-{
- GSList *l;
- struct dev_context *devc;
-
- (void)cb_data;
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
-
- devc = sdi->priv;
- if (devc->limit_samples == 0)
- return SR_ERR;
- devc->logic_counter = devc->analog_counter = 0;
-
- /*
- * Setting two channels connected by a pipe is a remnant from when the
- * demo driver generated data in a thread, and collected and sent the
- * data in the main program loop.
- * They are kept here because it provides a convenient way of setting
- * up a timeout-based polling mechanism.
- */
- if (pipe(devc->pipe_fds)) {
- sr_err("%s: pipe() failed", __func__);
- return SR_ERR;
- }
-
- for (l = devc->analog_channel_groups; l; l = l->next) {
- generate_analog_pattern(l->data, devc->cur_samplerate);
- }
-
- devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]);
-
- g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL);
-
- /* Set channel encoding to binary (default is UTF-8). */
- g_io_channel_set_encoding(devc->channel, NULL, NULL);
-
- /* Make channels to unbuffered. */
- g_io_channel_set_buffered(devc->channel, FALSE);
-
- sr_session_source_add_channel(sdi->session, devc->channel, G_IO_IN | G_IO_ERR,
- 40, prepare_data, (void *)sdi);
-
- /* Send header packet to the session bus. */
- std_session_send_df_header(sdi, LOG_PREFIX);
-
- /* We use this timestamp to decide how many more samples to send. */
- devc->starttime = g_get_monotonic_time();
-
- return SR_OK;
-}
-
-static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
-{
- struct dev_context *devc;
- struct sr_datafeed_packet packet;
-
- (void)cb_data;
-
- devc = sdi->priv;
- sr_dbg("Stopping acquisition.");
-
- sr_session_source_remove_channel(sdi->session, devc->channel);
- g_io_channel_shutdown(devc->channel, FALSE, NULL);
- g_io_channel_unref(devc->channel);
- devc->channel = NULL;
-
- /* Send last packet. */
- packet.type = SR_DF_END;
- sr_session_send(sdi, &packet);
-
- return SR_OK;
-}
-
-SR_PRIV struct sr_dev_driver demo_driver_info = {
- .name = "demo",
- .longname = "Demo driver and pattern generator",
- .api_version = 1,
- .init = init,
- .cleanup = cleanup,
- .scan = scan,
- .dev_list = dev_list,
- .dev_clear = NULL,
- .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