endif
if HW_DEMO
src_libdrivers_la_SOURCES += \
- src/hardware/demo/demo.c
+ src/hardware/demo/protocol.h \
+ src/hardware/demo/protocol.c \
+ src/hardware/demo/api.c
endif
if HW_DEREE_DE5000
src_libdrivers_la_SOURCES += \
--- /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>
+ * Copyright (C) 2015 Bartosz Golaszewski <bgolaszewski@baylibre.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 <config.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <libsigrok/libsigrok.h>
+#include "libsigrok-internal.h"
+#include "protocol.h"
+
+#define DEFAULT_NUM_LOGIC_CHANNELS 8
+#define DEFAULT_NUM_ANALOG_CHANNELS 4
+
+#define DEFAULT_ANALOG_AMPLITUDE 10
+
+static const char *logic_pattern_str[] = {
+ "sigrok",
+ "random",
+ "incremental",
+ "all-low",
+ "all-high",
+};
+
+static const uint32_t drvopts[] = {
+ SR_CONF_DEMO_DEV,
+ SR_CONF_LOGIC_ANALYZER,
+ SR_CONF_OSCILLOSCOPE,
+};
+
+static const uint32_t scanopts[] = {
+ SR_CONF_NUM_LOGIC_CHANNELS,
+ SR_CONF_NUM_ANALOG_CHANNELS,
+};
+
+static const uint32_t devopts[] = {
+ SR_CONF_CONTINUOUS,
+ SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
+ SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
+ SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+ SR_CONF_AVERAGING | SR_CONF_GET | SR_CONF_SET,
+ SR_CONF_AVG_SAMPLES | SR_CONF_GET | SR_CONF_SET,
+};
+
+static const uint32_t devopts_cg_logic[] = {
+ SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+};
+
+static const uint32_t devopts_cg_analog_group[] = {
+ SR_CONF_AMPLITUDE | SR_CONF_GET | SR_CONF_SET,
+};
+
+static const uint32_t devopts_cg_analog_channel[] = {
+ SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+ SR_CONF_AMPLITUDE | SR_CONF_GET | SR_CONF_SET,
+};
+
+static const uint64_t samplerates[] = {
+ SR_HZ(1),
+ SR_GHZ(1),
+ SR_HZ(1),
+};
+
+static GSList *scan(struct sr_dev_driver *di, GSList *options)
+{
+ struct dev_context *devc;
+ struct sr_dev_inst *sdi;
+ struct sr_channel *ch;
+ struct sr_channel_group *cg, *acg;
+ struct sr_config *src;
+ struct analog_gen *ag;
+ GSList *l;
+ int num_logic_channels, num_analog_channels, pattern, i;
+ char channel_name[16];
+
+ 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;
+ }
+ }
+
+ sdi = g_malloc0(sizeof(struct sr_dev_inst));
+ sdi->status = SR_ST_INACTIVE;
+ sdi->model = g_strdup("Demo device");
+
+ devc = g_malloc0(sizeof(struct dev_context));
+ devc->cur_samplerate = SR_KHZ(200);
+ 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;
+
+ if (num_logic_channels > 0) {
+ /* Logic channels, all in one channel group. */
+ cg = g_malloc0(sizeof(struct sr_channel_group));
+ cg->name = g_strdup("Logic");
+ for (i = 0; i < num_logic_channels; i++) {
+ sprintf(channel_name, "D%d", i);
+ ch = sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_name);
+ cg->channels = g_slist_append(cg->channels, ch);
+ }
+ sdi->channel_groups = g_slist_append(NULL, cg);
+ }
+
+ /* Analog channels, channel groups and pattern generators. */
+ if (num_analog_channels > 0) {
+ pattern = 0;
+ /* An "Analog" channel group with all analog channels in it. */
+ acg = g_malloc0(sizeof(struct sr_channel_group));
+ acg->name = g_strdup("Analog");
+ sdi->channel_groups = g_slist_append(sdi->channel_groups, acg);
+
+ devc->ch_ag = g_hash_table_new(g_direct_hash, g_direct_equal);
+ for (i = 0; i < num_analog_channels; i++) {
+ snprintf(channel_name, 16, "A%d", i);
+ ch = sr_channel_new(sdi, i + num_logic_channels, SR_CHANNEL_ANALOG,
+ TRUE, channel_name);
+ acg->channels = g_slist_append(acg->channels, ch);
+
+ /* Every analog channel gets its own channel group as well. */
+ cg = g_malloc0(sizeof(struct sr_channel_group));
+ cg->name = g_strdup(channel_name);
+ cg->channels = g_slist_append(NULL, ch);
+ sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
+
+ /* Every channel gets a generator struct. */
+ ag = g_malloc(sizeof(struct analog_gen));
+ ag->amplitude = DEFAULT_ANALOG_AMPLITUDE;
+ sr_analog_init(&ag->packet, &ag->encoding, &ag->meaning, &ag->spec, 2);
+ ag->packet.meaning->channels = cg->channels;
+ ag->packet.meaning->mq = 0;
+ ag->packet.meaning->mqflags = 0;
+ ag->packet.meaning->unit = SR_UNIT_VOLT;
+ ag->packet.data = ag->pattern_data;
+ ag->pattern = pattern;
+ ag->avg_val = 0.0f;
+ ag->num_avgs = 0;
+ g_hash_table_insert(devc->ch_ag, ch, ag);
+
+ if (++pattern == ARRAY_SIZE(analog_pattern_str))
+ pattern = 0;
+ }
+ }
+
+ sdi->priv = devc;
+
+ return std_scan_complete(di, g_slist_append(NULL, sdi));
+}
+
+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 void clear_helper(void *priv)
+{
+ struct dev_context *devc;
+ GHashTableIter iter;
+ void *value;
+
+ devc = priv;
+
+ /* Analog generators. */
+ g_hash_table_iter_init(&iter, devc->ch_ag);
+ while (g_hash_table_iter_next(&iter, NULL, &value))
+ g_free(value);
+ g_hash_table_unref(devc->ch_ag);
+ g_free(devc);
+}
+
+static int dev_clear(const struct sr_dev_driver *di)
+{
+ return std_dev_clear(di, clear_helper);
+}
+
+static int config_get(uint32_t key, 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 (key) {
+ 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_AVERAGING:
+ *data = g_variant_new_boolean(devc->avg);
+ break;
+ case SR_CONF_AVG_SAMPLES:
+ *data = g_variant_new_uint64(devc->avg_samples);
+ break;
+ case SR_CONF_PATTERN_MODE:
+ if (!cg)
+ return SR_ERR_CHANNEL_GROUP;
+ /* Any channel in the group will do. */
+ 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 = g_hash_table_lookup(devc->ch_ag, ch);
+ pattern = ag->pattern;
+ *data = g_variant_new_string(analog_pattern_str[pattern]);
+ } else
+ return SR_ERR_BUG;
+ break;
+ case SR_CONF_AMPLITUDE:
+ if (!cg)
+ return SR_ERR_CHANNEL_GROUP;
+ /* Any channel in the group will do. */
+ ch = cg->channels->data;
+ if (ch->type != SR_CHANNEL_ANALOG)
+ return SR_ERR_ARG;
+ ag = g_hash_table_lookup(devc->ch_ag, ch);
+ *data = g_variant_new_double(ag->amplitude);
+ break;
+ default:
+ return SR_ERR_NA;
+ }
+
+ return SR_OK;
+}
+
+static int config_set(uint32_t key, 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;
+ GSList *l;
+ int logic_pattern, analog_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 (key) {
+ case SR_CONF_SAMPLERATE:
+ devc->cur_samplerate = g_variant_get_uint64(data);
+ break;
+ case SR_CONF_LIMIT_SAMPLES:
+ devc->limit_msec = 0;
+ devc->limit_samples = g_variant_get_uint64(data);
+ break;
+ case SR_CONF_LIMIT_MSEC:
+ devc->limit_msec = g_variant_get_uint64(data);
+ devc->limit_samples = 0;
+ break;
+ case SR_CONF_AVERAGING:
+ devc->avg = g_variant_get_boolean(data);
+ sr_dbg("%s averaging", devc->avg ? "Enabling" : "Disabling");
+ break;
+ case SR_CONF_AVG_SAMPLES:
+ devc->avg_samples = g_variant_get_uint64(data);
+ sr_dbg("Setting averaging rate to %" PRIu64, devc->avg_samples);
+ break;
+ case SR_CONF_PATTERN_MODE:
+ if (!cg)
+ return SR_ERR_CHANNEL_GROUP;
+ stropt = g_variant_get_string(data, NULL);
+ logic_pattern = analog_pattern = -1;
+ for (i = 0; i < ARRAY_SIZE(logic_pattern_str); i++) {
+ if (!strcmp(stropt, logic_pattern_str[i])) {
+ logic_pattern = i;
+ break;
+ }
+ }
+ for (i = 0; i < ARRAY_SIZE(analog_pattern_str); i++) {
+ if (!strcmp(stropt, analog_pattern_str[i])) {
+ analog_pattern = i;
+ break;
+ }
+ }
+ if (logic_pattern == -1 && analog_pattern == -1)
+ return SR_ERR_ARG;
+ for (l = cg->channels; l; l = l->next) {
+ ch = l->data;
+ if (ch->type == SR_CHANNEL_LOGIC) {
+ if (logic_pattern == -1)
+ return SR_ERR_ARG;
+ sr_dbg("Setting logic pattern to %s",
+ logic_pattern_str[logic_pattern]);
+ devc->logic_pattern = logic_pattern;
+ /* Might as well do this now, these are static. */
+ if (logic_pattern == PATTERN_ALL_LOW)
+ memset(devc->logic_data, 0x00, LOGIC_BUFSIZE);
+ else if (logic_pattern == PATTERN_ALL_HIGH)
+ memset(devc->logic_data, 0xff, LOGIC_BUFSIZE);
+ } else if (ch->type == SR_CHANNEL_ANALOG) {
+ if (analog_pattern == -1)
+ return SR_ERR_ARG;
+ sr_dbg("Setting analog pattern for channel %s to %s",
+ ch->name, analog_pattern_str[analog_pattern]);
+ ag = g_hash_table_lookup(devc->ch_ag, ch);
+ ag->pattern = analog_pattern;
+ } else
+ return SR_ERR_BUG;
+ }
+ break;
+ case SR_CONF_AMPLITUDE:
+ if (!cg)
+ return SR_ERR_CHANNEL_GROUP;
+ for (l = cg->channels; l; l = l->next) {
+ ch = l->data;
+ if (ch->type != SR_CHANNEL_ANALOG)
+ return SR_ERR_ARG;
+ ag = g_hash_table_lookup(devc->ch_ag, ch);
+ ag->amplitude = g_variant_get_double(data);
+ }
+ break;
+ default:
+ ret = SR_ERR_NA;
+ }
+
+ return ret;
+}
+
+static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
+ const struct sr_channel_group *cg)
+{
+ struct sr_channel *ch;
+ GVariant *gvar;
+ GVariantBuilder gvb;
+
+ if (key == SR_CONF_SCAN_OPTIONS) {
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
+ scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
+ return SR_OK;
+ }
+
+ if (key == SR_CONF_DEVICE_OPTIONS && !sdi) {
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
+ drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_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_UINT32,
+ devopts, ARRAY_SIZE(devopts), sizeof(uint32_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:
+ if (ch->type == SR_CHANNEL_LOGIC)
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
+ devopts_cg_logic, ARRAY_SIZE(devopts_cg_logic),
+ sizeof(uint32_t));
+ else if (ch->type == SR_CHANNEL_ANALOG) {
+ if (strcmp(cg->name, "Analog") == 0)
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
+ devopts_cg_analog_group, ARRAY_SIZE(devopts_cg_analog_group),
+ sizeof(uint32_t));
+ else
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
+ devopts_cg_analog_channel, ARRAY_SIZE(devopts_cg_analog_channel),
+ sizeof(uint32_t));
+ }
+ else
+ return SR_ERR_BUG;
+ break;
+ case SR_CONF_PATTERN_MODE:
+ /* The analog group (with all 4 channels) shall not have a pattern property. */
+ if (strcmp(cg->name, "Analog") == 0)
+ return SR_ERR_NA;
+
+ 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 int dev_acquisition_start(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ GHashTableIter iter;
+ void *value;
+
+ if (sdi->status != SR_ST_ACTIVE)
+ return SR_ERR_DEV_CLOSED;
+
+ devc = sdi->priv;
+ devc->sent_samples = 0;
+
+ g_hash_table_iter_init(&iter, devc->ch_ag);
+ while (g_hash_table_iter_next(&iter, NULL, &value))
+ demo_generate_analog_pattern(value, devc->cur_samplerate);
+
+ sr_session_source_add(sdi->session, -1, 0, 100,
+ demo_prepare_data, (struct sr_dev_inst *)sdi);
+
+ std_session_send_df_header(sdi);
+
+ /* We use this timestamp to decide how many more samples to send. */
+ devc->start_us = g_get_monotonic_time();
+ devc->spent_us = 0;
+
+ return SR_OK;
+}
+
+static int dev_acquisition_stop(struct sr_dev_inst *sdi)
+{
+ sr_dbg("Stopping acquisition.");
+ sr_session_source_remove(sdi->session, -1);
+ std_session_send_df_end(sdi);
+
+ return SR_OK;
+}
+
+static struct sr_dev_driver demo_driver_info = {
+ .name = "demo",
+ .longname = "Demo driver and pattern generator",
+ .api_version = 1,
+ .init = std_init,
+ .cleanup = std_cleanup,
+ .scan = scan,
+ .dev_list = std_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,
+ .context = NULL,
+};
+SR_REGISTER_DEV_DRIVER(demo_driver_info);
+++ /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>
- * Copyright (C) 2015 Bartosz Golaszewski <bgolaszewski@baylibre.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 <config.h>
-#include <stdlib.h>
-#include <string.h>
-#include <math.h>
-#include <libsigrok/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 DEFAULT_ANALOG_AMPLITUDE 10
-#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 amplitude;
- float pattern_data[ANALOG_BUFSIZE];
- unsigned int num_samples;
- struct sr_datafeed_analog packet;
- struct sr_analog_encoding encoding;
- struct sr_analog_meaning meaning;
- struct sr_analog_spec spec;
- float avg_val; /* Average value */
- unsigned num_avgs; /* Number of samples averaged */
-};
-
-/* Private, per-device-instance driver context. */
-struct dev_context {
- uint64_t cur_samplerate;
- uint64_t limit_samples;
- uint64_t limit_msec;
- uint64_t sent_samples;
- int64_t start_us;
- int64_t spent_us;
- 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;
- GHashTable *ch_ag;
- gboolean avg; /* True if averaging is enabled */
- uint64_t avg_samples;
-};
-
-static const uint32_t drvopts[] = {
- SR_CONF_DEMO_DEV,
- SR_CONF_LOGIC_ANALYZER,
- SR_CONF_OSCILLOSCOPE,
-};
-
-static const uint32_t scanopts[] = {
- SR_CONF_NUM_LOGIC_CHANNELS,
- SR_CONF_NUM_ANALOG_CHANNELS,
-};
-
-static const uint32_t devopts[] = {
- SR_CONF_CONTINUOUS,
- SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
- SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
- SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
- SR_CONF_AVERAGING | SR_CONF_GET | SR_CONF_SET,
- SR_CONF_AVG_SAMPLES | SR_CONF_GET | SR_CONF_SET,
-};
-
-static const uint32_t devopts_cg_logic[] = {
- SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
-};
-
-static const uint32_t devopts_cg_analog_group[] = {
- SR_CONF_AMPLITUDE | SR_CONF_GET | SR_CONF_SET,
-};
-
-static const uint32_t devopts_cg_analog_channel[] = {
- SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
- SR_CONF_AMPLITUDE | SR_CONF_GET | SR_CONF_SET,
-};
-
-static const uint64_t samplerates[] = {
- SR_HZ(1),
- SR_GHZ(1),
- SR_HZ(1),
-};
-
-static const 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,
-};
-
-static int dev_acquisition_stop(struct sr_dev_inst *sdi);
-
-static void generate_analog_pattern(struct analog_gen *ag, uint64_t sample_rate)
-{
- double t, frequency;
- float value;
- unsigned int num_samples, i;
- int last_end;
-
- sr_dbg("Generating %s pattern.", analog_pattern_str[ag->pattern]);
-
- num_samples = ANALOG_BUFSIZE / sizeof(float);
-
- switch (ag->pattern) {
- case PATTERN_SQUARE:
- value = ag->amplitude;
- last_end = 0;
- for (i = 0; i < num_samples; i++) {
- if (i % 5 == 0)
- value = -value;
- if (i % 10 == 0)
- last_end = i;
- 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
- * useful 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] = ag->amplitude *
- sin(2 * G_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 * ag->amplitude / G_PI) *
- asin(sin(2 * G_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 * ag->amplitude *
- ((t * frequency) - floor(0.5f + t * frequency));
- }
-
- ag->num_samples = num_samples;
- break;
- }
-}
-
-static GSList *scan(struct sr_dev_driver *di, GSList *options)
-{
- struct dev_context *devc;
- struct sr_dev_inst *sdi;
- struct sr_channel *ch;
- struct sr_channel_group *cg, *acg;
- struct sr_config *src;
- struct analog_gen *ag;
- GSList *l;
- int num_logic_channels, num_analog_channels, pattern, i;
- char channel_name[16];
-
- 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;
- }
- }
-
- sdi = g_malloc0(sizeof(struct sr_dev_inst));
- sdi->status = SR_ST_INACTIVE;
- sdi->model = g_strdup("Demo device");
-
- devc = g_malloc0(sizeof(struct dev_context));
- devc->cur_samplerate = SR_KHZ(200);
- 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;
-
- if (num_logic_channels > 0) {
- /* Logic channels, all in one channel group. */
- cg = g_malloc0(sizeof(struct sr_channel_group));
- cg->name = g_strdup("Logic");
- for (i = 0; i < num_logic_channels; i++) {
- sprintf(channel_name, "D%d", i);
- ch = sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_name);
- cg->channels = g_slist_append(cg->channels, ch);
- }
- sdi->channel_groups = g_slist_append(NULL, cg);
- }
-
- /* Analog channels, channel groups and pattern generators. */
- if (num_analog_channels > 0) {
- pattern = 0;
- /* An "Analog" channel group with all analog channels in it. */
- acg = g_malloc0(sizeof(struct sr_channel_group));
- acg->name = g_strdup("Analog");
- sdi->channel_groups = g_slist_append(sdi->channel_groups, acg);
-
- devc->ch_ag = g_hash_table_new(g_direct_hash, g_direct_equal);
- for (i = 0; i < num_analog_channels; i++) {
- snprintf(channel_name, 16, "A%d", i);
- ch = sr_channel_new(sdi, i + num_logic_channels, SR_CHANNEL_ANALOG,
- TRUE, channel_name);
- acg->channels = g_slist_append(acg->channels, ch);
-
- /* Every analog channel gets its own channel group as well. */
- cg = g_malloc0(sizeof(struct sr_channel_group));
- cg->name = g_strdup(channel_name);
- cg->channels = g_slist_append(NULL, ch);
- sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
-
- /* Every channel gets a generator struct. */
- ag = g_malloc(sizeof(struct analog_gen));
- ag->amplitude = DEFAULT_ANALOG_AMPLITUDE;
- sr_analog_init(&ag->packet, &ag->encoding, &ag->meaning, &ag->spec, 2);
- ag->packet.meaning->channels = cg->channels;
- ag->packet.meaning->mq = 0;
- ag->packet.meaning->mqflags = 0;
- ag->packet.meaning->unit = SR_UNIT_VOLT;
- ag->packet.data = ag->pattern_data;
- ag->pattern = pattern;
- ag->avg_val = 0.0f;
- ag->num_avgs = 0;
- g_hash_table_insert(devc->ch_ag, ch, ag);
-
- if (++pattern == ARRAY_SIZE(analog_pattern_str))
- pattern = 0;
- }
- }
-
- sdi->priv = devc;
-
- return std_scan_complete(di, g_slist_append(NULL, sdi));
-}
-
-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 void clear_helper(void *priv)
-{
- struct dev_context *devc;
- GHashTableIter iter;
- void *value;
-
- devc = priv;
-
- /* Analog generators. */
- g_hash_table_iter_init(&iter, devc->ch_ag);
- while (g_hash_table_iter_next(&iter, NULL, &value))
- g_free(value);
- g_hash_table_unref(devc->ch_ag);
- g_free(devc);
-}
-
-static int dev_clear(const struct sr_dev_driver *di)
-{
- return std_dev_clear(di, clear_helper);
-}
-
-static int config_get(uint32_t key, 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 (key) {
- 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_AVERAGING:
- *data = g_variant_new_boolean(devc->avg);
- break;
- case SR_CONF_AVG_SAMPLES:
- *data = g_variant_new_uint64(devc->avg_samples);
- break;
- case SR_CONF_PATTERN_MODE:
- if (!cg)
- return SR_ERR_CHANNEL_GROUP;
- /* Any channel in the group will do. */
- 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 = g_hash_table_lookup(devc->ch_ag, ch);
- pattern = ag->pattern;
- *data = g_variant_new_string(analog_pattern_str[pattern]);
- } else
- return SR_ERR_BUG;
- break;
- case SR_CONF_AMPLITUDE:
- if (!cg)
- return SR_ERR_CHANNEL_GROUP;
- /* Any channel in the group will do. */
- ch = cg->channels->data;
- if (ch->type != SR_CHANNEL_ANALOG)
- return SR_ERR_ARG;
- ag = g_hash_table_lookup(devc->ch_ag, ch);
- *data = g_variant_new_double(ag->amplitude);
- break;
- default:
- return SR_ERR_NA;
- }
-
- return SR_OK;
-}
-
-static int config_set(uint32_t key, 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;
- GSList *l;
- int logic_pattern, analog_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 (key) {
- case SR_CONF_SAMPLERATE:
- devc->cur_samplerate = g_variant_get_uint64(data);
- break;
- case SR_CONF_LIMIT_SAMPLES:
- devc->limit_msec = 0;
- devc->limit_samples = g_variant_get_uint64(data);
- break;
- case SR_CONF_LIMIT_MSEC:
- devc->limit_msec = g_variant_get_uint64(data);
- devc->limit_samples = 0;
- break;
- case SR_CONF_AVERAGING:
- devc->avg = g_variant_get_boolean(data);
- sr_dbg("%s averaging", devc->avg ? "Enabling" : "Disabling");
- break;
- case SR_CONF_AVG_SAMPLES:
- devc->avg_samples = g_variant_get_uint64(data);
- sr_dbg("Setting averaging rate to %" PRIu64, devc->avg_samples);
- break;
- case SR_CONF_PATTERN_MODE:
- if (!cg)
- return SR_ERR_CHANNEL_GROUP;
- stropt = g_variant_get_string(data, NULL);
- logic_pattern = analog_pattern = -1;
- for (i = 0; i < ARRAY_SIZE(logic_pattern_str); i++) {
- if (!strcmp(stropt, logic_pattern_str[i])) {
- logic_pattern = i;
- break;
- }
- }
- for (i = 0; i < ARRAY_SIZE(analog_pattern_str); i++) {
- if (!strcmp(stropt, analog_pattern_str[i])) {
- analog_pattern = i;
- break;
- }
- }
- if (logic_pattern == -1 && analog_pattern == -1)
- return SR_ERR_ARG;
- for (l = cg->channels; l; l = l->next) {
- ch = l->data;
- if (ch->type == SR_CHANNEL_LOGIC) {
- if (logic_pattern == -1)
- return SR_ERR_ARG;
- sr_dbg("Setting logic pattern to %s",
- logic_pattern_str[logic_pattern]);
- devc->logic_pattern = logic_pattern;
- /* Might as well do this now, these are static. */
- if (logic_pattern == PATTERN_ALL_LOW)
- memset(devc->logic_data, 0x00, LOGIC_BUFSIZE);
- else if (logic_pattern == PATTERN_ALL_HIGH)
- memset(devc->logic_data, 0xff, LOGIC_BUFSIZE);
- } else if (ch->type == SR_CHANNEL_ANALOG) {
- if (analog_pattern == -1)
- return SR_ERR_ARG;
- sr_dbg("Setting analog pattern for channel %s to %s",
- ch->name, analog_pattern_str[analog_pattern]);
- ag = g_hash_table_lookup(devc->ch_ag, ch);
- ag->pattern = analog_pattern;
- } else
- return SR_ERR_BUG;
- }
- break;
- case SR_CONF_AMPLITUDE:
- if (!cg)
- return SR_ERR_CHANNEL_GROUP;
- for (l = cg->channels; l; l = l->next) {
- ch = l->data;
- if (ch->type != SR_CHANNEL_ANALOG)
- return SR_ERR_ARG;
- ag = g_hash_table_lookup(devc->ch_ag, ch);
- ag->amplitude = g_variant_get_double(data);
- }
- break;
- default:
- ret = SR_ERR_NA;
- }
-
- return ret;
-}
-
-static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
- const struct sr_channel_group *cg)
-{
- struct sr_channel *ch;
- GVariant *gvar;
- GVariantBuilder gvb;
-
- if (key == SR_CONF_SCAN_OPTIONS) {
- *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
- scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
- return SR_OK;
- }
-
- if (key == SR_CONF_DEVICE_OPTIONS && !sdi) {
- *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
- drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_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_UINT32,
- devopts, ARRAY_SIZE(devopts), sizeof(uint32_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:
- if (ch->type == SR_CHANNEL_LOGIC)
- *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
- devopts_cg_logic, ARRAY_SIZE(devopts_cg_logic),
- sizeof(uint32_t));
- else if (ch->type == SR_CHANNEL_ANALOG) {
- if (strcmp(cg->name, "Analog") == 0)
- *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
- devopts_cg_analog_group, ARRAY_SIZE(devopts_cg_analog_group),
- sizeof(uint32_t));
- else
- *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
- devopts_cg_analog_channel, ARRAY_SIZE(devopts_cg_analog_channel),
- sizeof(uint32_t));
- }
- else
- return SR_ERR_BUG;
- break;
- case SR_CONF_PATTERN_MODE:
- /* The analog group (with all 4 channels) shall not have a pattern property. */
- if (strcmp(cg->name, "Analog") == 0)
- return SR_ERR_NA;
-
- 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;
- }
-}
-
-static void send_analog_packet(struct analog_gen *ag,
- struct sr_dev_inst *sdi, uint64_t *analog_sent,
- uint64_t analog_pos, uint64_t analog_todo)
-{
- struct sr_datafeed_packet packet;
- struct dev_context *devc;
- uint64_t sending_now, to_avg;
- int ag_pattern_pos;
- unsigned int i;
-
- devc = sdi->priv;
- packet.type = SR_DF_ANALOG;
- packet.payload = &ag->packet;
-
- if (!devc->avg) {
- ag_pattern_pos = analog_pos % ag->num_samples;
- sending_now = MIN(analog_todo, ag->num_samples-ag_pattern_pos);
- ag->packet.data = ag->pattern_data + ag_pattern_pos;
- ag->packet.num_samples = sending_now;
- sr_session_send(sdi, &packet);
-
- /* Whichever channel group gets there first. */
- *analog_sent = MAX(*analog_sent, sending_now);
- } else {
- ag_pattern_pos = analog_pos % ag->num_samples;
- to_avg = MIN(analog_todo, ag->num_samples-ag_pattern_pos);
-
- for (i = 0; i < to_avg; i++) {
- ag->avg_val = (ag->avg_val +
- *(ag->pattern_data +
- ag_pattern_pos + i)) / 2;
- ag->num_avgs++;
- /* Time to send averaged data? */
- if (devc->avg_samples > 0 &&
- ag->num_avgs >= devc->avg_samples)
- goto do_send;
- }
-
- if (devc->avg_samples == 0) {
- /* We're averaging all the samples, so wait with
- * sending until the very end.
- */
- *analog_sent = ag->num_avgs;
- return;
- }
-
-do_send:
- ag->packet.data = &ag->avg_val;
- ag->packet.num_samples = 1;
-
- sr_session_send(sdi, &packet);
- *analog_sent = ag->num_avgs;
-
- ag->num_avgs = 0;
- ag->avg_val = 0.0f;
- }
-}
-
-/* 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 analog_gen *ag;
- GHashTableIter iter;
- void *value;
- uint64_t samples_todo, logic_done, analog_done, analog_sent, sending_now;
- int64_t elapsed_us, limit_us, todo_us;
-
- (void)fd;
- (void)revents;
-
- sdi = cb_data;
- devc = sdi->priv;
-
- /* Just in case. */
- if (devc->cur_samplerate <= 0
- || (devc->num_logic_channels <= 0
- && devc->num_analog_channels <= 0)) {
- dev_acquisition_stop(sdi);
- return G_SOURCE_CONTINUE;
- }
-
- /* What time span should we send samples for? */
- elapsed_us = g_get_monotonic_time() - devc->start_us;
- limit_us = 1000 * devc->limit_msec;
- if (limit_us > 0 && limit_us < elapsed_us)
- todo_us = MAX(0, limit_us - devc->spent_us);
- else
- todo_us = MAX(0, elapsed_us - devc->spent_us);
-
- /* How many samples are outstanding since the last round? */
- samples_todo = (todo_us * devc->cur_samplerate + G_USEC_PER_SEC - 1)
- / G_USEC_PER_SEC;
- if (devc->limit_samples > 0) {
- if (devc->limit_samples < devc->sent_samples)
- samples_todo = 0;
- else if (devc->limit_samples - devc->sent_samples < samples_todo)
- samples_todo = devc->limit_samples - devc->sent_samples;
- }
- /* Calculate the actual time covered by this run back from the sample
- * count, rounded towards zero. This avoids getting stuck on a too-low
- * time delta with no samples being sent due to round-off.
- */
- todo_us = samples_todo * G_USEC_PER_SEC / devc->cur_samplerate;
-
- logic_done = devc->num_logic_channels > 0 ? 0 : samples_todo;
- analog_done = devc->num_analog_channels > 0 ? 0 : samples_todo;
-
- while (logic_done < samples_todo || analog_done < samples_todo) {
- /* Logic */
- if (logic_done < samples_todo) {
- sending_now = MIN(samples_todo - logic_done,
- 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_done += sending_now;
- }
-
- /* Analog, one channel at a time */
- if (analog_done < samples_todo) {
- analog_sent = 0;
-
- g_hash_table_iter_init(&iter, devc->ch_ag);
- while (g_hash_table_iter_next(&iter, NULL, &value)) {
- send_analog_packet(value, sdi, &analog_sent,
- devc->sent_samples + analog_done,
- samples_todo - analog_done);
- }
- analog_done += analog_sent;
- }
- }
- /* At this point, both logic_done and analog_done should be
- * exactly equal to samples_todo, or else.
- */
- if (logic_done != samples_todo || analog_done != samples_todo) {
- sr_err("BUG: Sample count mismatch.");
- return G_SOURCE_REMOVE;
- }
- devc->sent_samples += samples_todo;
- devc->spent_us += todo_us;
-
- if ((devc->limit_samples > 0 && devc->sent_samples >= devc->limit_samples)
- || (limit_us > 0 && devc->spent_us >= limit_us)) {
-
- /* If we're averaging everything - now is the time to send data */
- if (devc->avg_samples == 0) {
- g_hash_table_iter_init(&iter, devc->ch_ag);
- while (g_hash_table_iter_next(&iter, NULL, &value)) {
- ag = value;
- packet.type = SR_DF_ANALOG;
- packet.payload = &ag->packet;
- ag->packet.data = &ag->avg_val;
- ag->packet.num_samples = 1;
- sr_session_send(sdi, &packet);
- }
- }
- sr_dbg("Requested number of samples reached.");
- dev_acquisition_stop(sdi);
- }
-
- return G_SOURCE_CONTINUE;
-}
-
-static int dev_acquisition_start(const struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- GHashTableIter iter;
- void *value;
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
-
- devc = sdi->priv;
- devc->sent_samples = 0;
-
- g_hash_table_iter_init(&iter, devc->ch_ag);
- while (g_hash_table_iter_next(&iter, NULL, &value))
- generate_analog_pattern(value, devc->cur_samplerate);
-
- sr_session_source_add(sdi->session, -1, 0, 100,
- prepare_data, (struct sr_dev_inst *)sdi);
-
- std_session_send_df_header(sdi);
-
- /* We use this timestamp to decide how many more samples to send. */
- devc->start_us = g_get_monotonic_time();
- devc->spent_us = 0;
-
- return SR_OK;
-}
-
-static int dev_acquisition_stop(struct sr_dev_inst *sdi)
-{
- sr_dbg("Stopping acquisition.");
- sr_session_source_remove(sdi->session, -1);
- std_session_send_df_end(sdi);
-
- return SR_OK;
-}
-
-static struct sr_dev_driver demo_driver_info = {
- .name = "demo",
- .longname = "Demo driver and pattern generator",
- .api_version = 1,
- .init = std_init,
- .cleanup = std_cleanup,
- .scan = scan,
- .dev_list = std_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,
- .context = NULL,
-};
-SR_REGISTER_DEV_DRIVER(demo_driver_info);
--- /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>
+ * Copyright (C) 2015 Bartosz Golaszewski <bgolaszewski@baylibre.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 <config.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <libsigrok/libsigrok.h>
+#include "libsigrok-internal.h"
+#include "protocol.h"
+
+#define ANALOG_SAMPLES_PER_PERIOD 20
+
+static const 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 void demo_generate_analog_pattern(struct analog_gen *ag, uint64_t sample_rate)
+{
+ double t, frequency;
+ float value;
+ unsigned int num_samples, i;
+ int last_end;
+
+ sr_dbg("Generating %s pattern.", analog_pattern_str[ag->pattern]);
+
+ num_samples = ANALOG_BUFSIZE / sizeof(float);
+
+ switch (ag->pattern) {
+ case PATTERN_SQUARE:
+ value = ag->amplitude;
+ last_end = 0;
+ for (i = 0; i < num_samples; i++) {
+ if (i % 5 == 0)
+ value = -value;
+ if (i % 10 == 0)
+ last_end = i;
+ 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
+ * useful 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] = ag->amplitude *
+ sin(2 * G_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 * ag->amplitude / G_PI) *
+ asin(sin(2 * G_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 * ag->amplitude *
+ ((t * frequency) - floor(0.5f + t * frequency));
+ }
+
+ ag->num_samples = num_samples;
+ break;
+ }
+}
+
+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;
+ }
+}
+
+static void send_analog_packet(struct analog_gen *ag,
+ struct sr_dev_inst *sdi, uint64_t *analog_sent,
+ uint64_t analog_pos, uint64_t analog_todo)
+{
+ struct sr_datafeed_packet packet;
+ struct dev_context *devc;
+ uint64_t sending_now, to_avg;
+ int ag_pattern_pos;
+ unsigned int i;
+
+ devc = sdi->priv;
+ packet.type = SR_DF_ANALOG;
+ packet.payload = &ag->packet;
+
+ if (!devc->avg) {
+ ag_pattern_pos = analog_pos % ag->num_samples;
+ sending_now = MIN(analog_todo, ag->num_samples-ag_pattern_pos);
+ ag->packet.data = ag->pattern_data + ag_pattern_pos;
+ ag->packet.num_samples = sending_now;
+ sr_session_send(sdi, &packet);
+
+ /* Whichever channel group gets there first. */
+ *analog_sent = MAX(*analog_sent, sending_now);
+ } else {
+ ag_pattern_pos = analog_pos % ag->num_samples;
+ to_avg = MIN(analog_todo, ag->num_samples-ag_pattern_pos);
+
+ for (i = 0; i < to_avg; i++) {
+ ag->avg_val = (ag->avg_val +
+ *(ag->pattern_data +
+ ag_pattern_pos + i)) / 2;
+ ag->num_avgs++;
+ /* Time to send averaged data? */
+ if (devc->avg_samples > 0 &&
+ ag->num_avgs >= devc->avg_samples)
+ goto do_send;
+ }
+
+ if (devc->avg_samples == 0) {
+ /* We're averaging all the samples, so wait with
+ * sending until the very end.
+ */
+ *analog_sent = ag->num_avgs;
+ return;
+ }
+
+do_send:
+ ag->packet.data = &ag->avg_val;
+ ag->packet.num_samples = 1;
+
+ sr_session_send(sdi, &packet);
+ *analog_sent = ag->num_avgs;
+
+ ag->num_avgs = 0;
+ ag->avg_val = 0.0f;
+ }
+}
+
+/* Callback handling data */
+SR_PRIV int demo_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 analog_gen *ag;
+ GHashTableIter iter;
+ void *value;
+ uint64_t samples_todo, logic_done, analog_done, analog_sent, sending_now;
+ int64_t elapsed_us, limit_us, todo_us;
+
+ (void)fd;
+ (void)revents;
+
+ sdi = cb_data;
+ devc = sdi->priv;
+
+ /* Just in case. */
+ if (devc->cur_samplerate <= 0
+ || (devc->num_logic_channels <= 0
+ && devc->num_analog_channels <= 0)) {
+ sdi->driver->dev_acquisition_stop(sdi);
+ return G_SOURCE_CONTINUE;
+ }
+
+ /* What time span should we send samples for? */
+ elapsed_us = g_get_monotonic_time() - devc->start_us;
+ limit_us = 1000 * devc->limit_msec;
+ if (limit_us > 0 && limit_us < elapsed_us)
+ todo_us = MAX(0, limit_us - devc->spent_us);
+ else
+ todo_us = MAX(0, elapsed_us - devc->spent_us);
+
+ /* How many samples are outstanding since the last round? */
+ samples_todo = (todo_us * devc->cur_samplerate + G_USEC_PER_SEC - 1)
+ / G_USEC_PER_SEC;
+ if (devc->limit_samples > 0) {
+ if (devc->limit_samples < devc->sent_samples)
+ samples_todo = 0;
+ else if (devc->limit_samples - devc->sent_samples < samples_todo)
+ samples_todo = devc->limit_samples - devc->sent_samples;
+ }
+ /* Calculate the actual time covered by this run back from the sample
+ * count, rounded towards zero. This avoids getting stuck on a too-low
+ * time delta with no samples being sent due to round-off.
+ */
+ todo_us = samples_todo * G_USEC_PER_SEC / devc->cur_samplerate;
+
+ logic_done = devc->num_logic_channels > 0 ? 0 : samples_todo;
+ analog_done = devc->num_analog_channels > 0 ? 0 : samples_todo;
+
+ while (logic_done < samples_todo || analog_done < samples_todo) {
+ /* Logic */
+ if (logic_done < samples_todo) {
+ sending_now = MIN(samples_todo - logic_done,
+ 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_done += sending_now;
+ }
+
+ /* Analog, one channel at a time */
+ if (analog_done < samples_todo) {
+ analog_sent = 0;
+
+ g_hash_table_iter_init(&iter, devc->ch_ag);
+ while (g_hash_table_iter_next(&iter, NULL, &value)) {
+ send_analog_packet(value, sdi, &analog_sent,
+ devc->sent_samples + analog_done,
+ samples_todo - analog_done);
+ }
+ analog_done += analog_sent;
+ }
+ }
+ /* At this point, both logic_done and analog_done should be
+ * exactly equal to samples_todo, or else.
+ */
+ if (logic_done != samples_todo || analog_done != samples_todo) {
+ sr_err("BUG: Sample count mismatch.");
+ return G_SOURCE_REMOVE;
+ }
+ devc->sent_samples += samples_todo;
+ devc->spent_us += todo_us;
+
+ if ((devc->limit_samples > 0 && devc->sent_samples >= devc->limit_samples)
+ || (limit_us > 0 && devc->spent_us >= limit_us)) {
+
+ /* If we're averaging everything - now is the time to send data */
+ if (devc->avg_samples == 0) {
+ g_hash_table_iter_init(&iter, devc->ch_ag);
+ while (g_hash_table_iter_next(&iter, NULL, &value)) {
+ ag = value;
+ packet.type = SR_DF_ANALOG;
+ packet.payload = &ag->packet;
+ ag->packet.data = &ag->avg_val;
+ ag->packet.num_samples = 1;
+ sr_session_send(sdi, &packet);
+ }
+ }
+ sr_dbg("Requested number of samples reached.");
+ sdi->driver->dev_acquisition_stop(sdi);
+ }
+
+ return G_SOURCE_CONTINUE;
+}
--- /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>
+ * Copyright (C) 2015 Bartosz Golaszewski <bgolaszewski@baylibre.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
+ */
+
+#ifndef LIBSIGROK_HARDWARE_DEMO_PROTOCOL_H
+#define LIBSIGROK_HARDWARE_DEMO_PROTOCOL_H
+
+#include <stdint.h>
+#include <libsigrok/libsigrok.h>
+#include "libsigrok-internal.h"
+
+#define LOG_PREFIX "demo"
+
+/* 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
+
+/* Private, per-device-instance driver context. */
+struct dev_context {
+ uint64_t cur_samplerate;
+ uint64_t limit_samples;
+ uint64_t limit_msec;
+ uint64_t sent_samples;
+ int64_t start_us;
+ int64_t spent_us;
+ 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;
+ GHashTable *ch_ag;
+ gboolean avg; /* True if averaging is enabled */
+ uint64_t avg_samples;
+};
+
+/* 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 *analog_pattern_str[] = {
+ "square",
+ "sine",
+ "triangle",
+ "sawtooth",
+};
+
+struct analog_gen {
+ int pattern;
+ float amplitude;
+ float pattern_data[ANALOG_BUFSIZE];
+ unsigned int num_samples;
+ struct sr_datafeed_analog packet;
+ struct sr_analog_encoding encoding;
+ struct sr_analog_meaning meaning;
+ struct sr_analog_spec spec;
+ float avg_val; /* Average value */
+ unsigned num_avgs; /* Number of samples averaged */
+};
+
+SR_PRIV void demo_generate_analog_pattern(struct analog_gen *ag, uint64_t sample_rate);
+SR_PRIV int demo_prepare_data(int fd, int revents, void *cb_data);
+
+#endif
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