/*
- * This file is part of the sigrok project.
+ * 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
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
-#include <sigrok.h>
+#include <math.h>
#ifdef _WIN32
#include <io.h>
#include <fcntl.h>
#define pipe(fds) _pipe(fds, 4096, _O_BINARY)
#endif
-#include "config.h"
+#include "libsigrok.h"
+#include "libsigrok-internal.h"
+
+/* Message logging helpers with subsystem-specific prefix string. */
+#define LOG_PREFIX "demo: "
+#define sr_log(l, s, args...) sr_log(l, LOG_PREFIX s, ## args)
+#define sr_spew(s, args...) sr_spew(LOG_PREFIX s, ## args)
+#define sr_dbg(s, args...) sr_dbg(LOG_PREFIX s, ## args)
+#define sr_info(s, args...) sr_info(LOG_PREFIX s, ## args)
+#define sr_warn(s, args...) sr_warn(LOG_PREFIX s, ## args)
+#define sr_err(s, args...) sr_err(LOG_PREFIX s, ## args)
+
+/* TODO: Number of probes should be configurable. */
+#define NUM_PROBES 16
-#define NUM_PROBES 8
#define DEMONAME "Demo device"
-/* size of chunks to send through the session bus */
-#define BUFSIZE 4096
+/* The size of chunks to send through the session bus. */
+/* TODO: Should be configurable. */
+#define BUFSIZE 1024*1024
+
+#define PERIOD 4000
+
+#define PI 3.14159265
+
+#define CONST_LEN 50
+
+/* Supported patterns which we can generate */
enum {
- GENMODE_DEFAULT,
- GENMODE_RANDOM,
- GENMODE_INC,
+ PATTERN_SINE = 0,
+ PATTERN_SQUARE = 1,
+ PATTERN_TRIANGLE = 2,
+ PATTERN_SAWTOOTH = 3,
+ PATTERN_RANDOM = 4,
+};
+static const char *pattern_strings[] = {
+ "Sine",
+ "Square",
+ "Triangle",
+ "Sawtooth",
+ "Random",
};
-GIOChannel *channels[2];
-
-struct databag {
+/* Private, per-device-instance driver context. */
+struct dev_context {
+ struct sr_dev_inst *sdi;
int pipe_fds[2];
+ GIOChannel *channel;
+ uint64_t cur_samplerate;
+ uint64_t limit_samples;
+ uint64_t limit_msec;
uint8_t sample_generator;
- uint8_t thread_running;
uint64_t samples_counter;
- int device_index;
- gpointer session_device_id;
- GTimer *timer;
+ void *cb_data;
+ int64_t starttime;
+ int stop;
+
+ int trigger_stage;
+ uint16_t trigger_mask;
+ uint16_t trigger_value;
+ uint16_t trigger_edge;
};
-static int capabilities[] = {
- SR_HWCAP_LOGIC_ANALYZER,
- SR_HWCAP_PATTERN_MODE,
- SR_HWCAP_LIMIT_SAMPLES,
- SR_HWCAP_LIMIT_MSEC,
- SR_HWCAP_CONTINUOUS,
+static const int hwcaps[] = {
+ SR_CONF_LOGIC_ANALYZER,
+ SR_CONF_DEMO_DEV,
+ SR_CONF_SAMPLERATE,
+ SR_CONF_PATTERN_MODE,
+ SR_CONF_LIMIT_SAMPLES,
+ SR_CONF_LIMIT_MSEC,
+ SR_CONF_CONTINUOUS,
};
-static const char *patternmodes[] = {
- "random",
- "incremental",
- NULL,
+static const int hwoptions[] = {
+ SR_CONF_PATTERN_MODE,
};
-static uint8_t genmode_default[] = {
- 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 const uint64_t samplerates[] = {
+ SR_KHZ(10),
+ SR_KHZ(20),
+ SR_KHZ(50),
+ SR_KHZ(100),
+ SR_KHZ(200),
+ SR_KHZ(500),
+ SR_MHZ(1),
+ SR_MHZ(2),
+ SR_MHZ(5),
+ SR_MHZ(10),
+ SR_MHZ(20),
+ SR_MHZ(50),
+ SR_MHZ(100),
+ SR_MHZ(200),
};
-/* List of struct sr_device_instance, maintained by opendev()/closedev(). */
-static GSList *device_instances = NULL;
-static uint64_t cur_samplerate = KHZ(200);
-static uint64_t limit_samples = 0;
-static uint64_t limit_msec = 0;
-static int default_genmode = GENMODE_DEFAULT;
-static GThread *my_thread;
-static int thread_running;
-static void hw_stop_acquisition(int device_index, gpointer session_device_id);
-static int hw_init(char *deviceinfo)
-{
- struct sr_device_instance *sdi;
+/* We name the probes 0-7 on our demo driver. */
+static const char *probe_names[NUM_PROBES + 1] = {
+ "Channel 0", "Channel 1", "Channel 2", "Channel 3",
+ "Channel 4", "Channel 5", "Channel 6", "Channel 7",
+ "Channel 8", "Channel 9", "Channel 10", "Channel 11",
+ "Channel 12", "Channel 13", "Channel 14", "Channel 15",
+ NULL,
+};
- /* Avoid compiler warnings. */
- deviceinfo = deviceinfo;
+/* Private, per-device-instance driver context. */
+/* TODO: struct context as with the other drivers. */
- sdi = sr_device_instance_new(0, SR_ST_ACTIVE, DEMONAME, NULL, NULL);
- if (!sdi)
- return 0;
+/* List of struct sr_dev_inst, maintained by dev_open()/dev_close(). */
+SR_PRIV struct sr_dev_driver demo_driver_info;
+static struct sr_dev_driver *di = &demo_driver_info;
- device_instances = g_slist_append(device_instances, sdi);
+extern struct ds_trigger *trigger;
- return 1;
-}
+static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
-static int hw_opendev(int device_index)
+static int clear_instances(void)
{
- /* Avoid compiler warnings. */
- device_index = device_index;
-
/* Nothing needed so far. */
+
return SR_OK;
}
-static void hw_closedev(int device_index)
+static int hw_init(struct sr_context *sr_ctx)
{
- /* Avoid compiler warnings. */
- device_index = device_index;
-
- /* Nothing needed so far. */
+ return std_hw_init(sr_ctx, di, LOG_PREFIX);
}
-static void hw_cleanup(void)
+static GSList *hw_scan(GSList *options)
{
- /* Nothing needed so far. */
-}
+ struct sr_dev_inst *sdi;
+ struct sr_probe *probe;
+ struct drv_context *drvc;
+ struct dev_context *devc;
+ GSList *devices;
+ int i;
-static void *hw_get_device_info(int device_index, int device_info_id)
-{
- struct sr_device_instance *sdi;
- void *info = NULL;
+ (void)options;
+
+ drvc = di->priv;
- if (!(sdi = sr_get_device_instance(device_instances, device_index)))
+ devices = NULL;
+
+ sdi = sr_dev_inst_new(LOGIC, 0, SR_ST_ACTIVE, DEMONAME, NULL, NULL);
+ if (!sdi) {
+ sr_err("Device instance creation failed.");
return NULL;
+ }
+ sdi->driver = di;
- switch (device_info_id) {
- case SR_DI_INSTANCE:
- info = sdi;
- break;
- case SR_DI_NUM_PROBES:
- info = GINT_TO_POINTER(NUM_PROBES);
- break;
- case SR_DI_CUR_SAMPLERATE:
- info = &cur_samplerate;
- break;
- case SR_DI_PATTERNMODES:
- info = &patternmodes;
- break;
+ devices = g_slist_append(devices, sdi);
+ drvc->instances = g_slist_append(drvc->instances, sdi);
+
+ if (!(devc = g_try_malloc(sizeof(struct dev_context)))) {
+ sr_err("Device context malloc failed.");
+ return NULL;
}
- return info;
+ devc->sdi = sdi;
+ devc->cur_samplerate = SR_MHZ(200);
+ devc->limit_samples = 0;
+ devc->limit_msec = 0;
+ devc->sample_generator = PATTERN_SINE;
+
+ sdi->priv = devc;
+
+ if (sdi->mode == LOGIC) {
+ for (i = 0; probe_names[i]; i++) {
+ if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE,
+ probe_names[i])))
+ return NULL;
+ sdi->probes = g_slist_append(sdi->probes, probe);
+ }
+ } else if (sdi->mode == ANALOG) {
+ for (i = 0; i < DS_MAX_ANALOG_PROBES_NUM; i++) {
+ if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE,
+ probe_names[i])))
+ return NULL;
+ sdi->probes = g_slist_append(sdi->probes, probe);
+ }
+ }
+
+ return devices;
}
-static int hw_get_status(int device_index)
+static GSList *hw_dev_list(void)
{
- /* Avoid compiler warnings. */
- device_index = device_index;
-
- return SR_ST_ACTIVE;
+ return ((struct drv_context *)(di->priv))->instances;
}
-static int *hw_get_capabilities(void)
+static int hw_dev_open(struct sr_dev_inst *sdi)
{
- return capabilities;
+ (void)sdi;
+
+ sdi->status = SR_ST_ACTIVE;
+
+ return SR_OK;
}
-static int hw_set_configuration(int device_index, int capability, void *value)
+static int hw_dev_close(struct sr_dev_inst *sdi)
{
- int ret;
- uint64_t *tmp_u64;
- char *stropt;
+ (void)sdi;
- /* Avoid compiler warnings. */
- device_index = device_index;
+ sdi->status = SR_ST_INACTIVE;
- if (capability == SR_HWCAP_PROBECONFIG) {
- /* Nothing to do, but must be supported */
- ret = SR_OK;
- } else if (capability == SR_HWCAP_SAMPLERATE) {
- tmp_u64 = value;
- cur_samplerate = *tmp_u64;
- ret = SR_OK;
- } else if (capability == SR_HWCAP_LIMIT_SAMPLES) {
- tmp_u64 = value;
- limit_samples = *tmp_u64;
- ret = SR_OK;
- } else if (capability == SR_HWCAP_LIMIT_MSEC) {
- tmp_u64 = value;
- limit_msec = *tmp_u64;
- ret = SR_OK;
- } else if (capability == SR_HWCAP_PATTERN_MODE) {
- stropt = value;
- if (!strcmp(stropt, "random")) {
- default_genmode = GENMODE_RANDOM;
- ret = SR_OK;
- } else if (!strcmp(stropt, "incremental")) {
- default_genmode = GENMODE_INC;
- ret = SR_OK;
- } else {
- ret = SR_ERR;
+ return SR_OK;
+}
+
+static int hw_cleanup(void)
+{
+ GSList *l;
+ struct sr_dev_inst *sdi;
+ struct drv_context *drvc;
+ int ret = SR_OK;
+
+ if (!(drvc = di->priv))
+ return SR_OK;
+
+ /* Properly close and free all devices. */
+ for (l = drvc->instances; l; l = l->next) {
+ if (!(sdi = l->data)) {
+ /* Log error, but continue cleaning up the rest. */
+ sr_err("%s: sdi was NULL, continuing", __func__);
+ ret = SR_ERR_BUG;
+ continue;
}
- } else {
- ret = SR_ERR;
+ sr_dev_inst_free(sdi);
}
+ g_slist_free(drvc->instances);
+ drvc->instances = NULL;
return ret;
}
-static void samples_generator(uint8_t *buf, uint64_t size, void *data)
+static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi)
{
- static uint64_t p = 0;
- struct databag *mydata = data;
- uint64_t i;
-
- memset(buf, 0, size);
+ struct dev_context *const devc = sdi->priv;
- switch (mydata->sample_generator) {
- case GENMODE_DEFAULT:
- for (i = 0; i < size; i++) {
- *(buf + i) = ~(genmode_default[p] >> 1);
- if (++p == 64)
- p = 0;
- }
+ 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 GENMODE_RANDOM: /* Random */
- for (i = 0; i < size; i++)
- *(buf + i) = (uint8_t)(rand() & 0xff);
+ case SR_CONF_LIMIT_MSEC:
+ *data = g_variant_new_uint64(devc->limit_msec);
break;
- case GENMODE_INC: /* Simple increment */
- for (i = 0; i < size; i++)
- *(buf + i) = i;
+ case SR_CONF_DEVICE_MODE:
+ *data = g_variant_new_string(mode_strings[sdi->mode]);
+ break;
+ case SR_CONF_PATTERN_MODE:
+ *data = g_variant_new_string(pattern_strings[devc->sample_generator]);
break;
+ default:
+ return SR_ERR_NA;
}
+
+ return SR_OK;
}
-/* Thread function */
-static void thread_func(void *data)
+static int config_set(int id, GVariant *data, struct sr_dev_inst *sdi)
{
- struct databag *mydata = data;
- uint8_t buf[BUFSIZE];
- uint64_t nb_to_send = 0;
- int bytes_written;
-
- double time_cur, time_last, time_diff;
+ int i, ret;
+ const char *stropt;
+ struct sr_probe *probe;
- time_last = g_timer_elapsed(mydata->timer, NULL);
+ struct dev_context *const devc = sdi->priv;
- while (thread_running) {
- /* Rate control */
- time_cur = g_timer_elapsed(mydata->timer, NULL);
+ if (sdi->status != SR_ST_ACTIVE)
+ return SR_ERR_DEV_CLOSED;
- time_diff = time_cur - time_last;
- time_last = time_cur;
-
- nb_to_send = cur_samplerate * time_diff;
+ if (id == SR_CONF_SAMPLERATE) {
+ devc->cur_samplerate = g_variant_get_uint64(data);
+ sr_dbg("%s: setting samplerate to %" PRIu64, __func__,
+ devc->cur_samplerate);
+ ret = SR_OK;
+ } else if (id == SR_CONF_LIMIT_SAMPLES) {
+ devc->limit_msec = 0;
+ devc->limit_samples = g_variant_get_uint64(data);
+ sr_dbg("%s: setting limit_samples to %" PRIu64, __func__,
+ devc->limit_samples);
+ ret = SR_OK;
+ } else if (id == SR_CONF_LIMIT_MSEC) {
+ devc->limit_msec = g_variant_get_uint64(data);
+ devc->limit_samples = 0;
+ sr_dbg("%s: setting limit_msec to %" PRIu64, __func__,
+ devc->limit_msec);
+ ret = SR_OK;
+ } else if (id == SR_CONF_DEVICE_MODE) {
+ stropt = g_variant_get_string(data, NULL);
+ ret = SR_OK;
+ if (!strcmp(stropt, mode_strings[LOGIC])) {
+ sdi->mode = LOGIC;
+ sr_dev_probes_free(sdi);
+ for (i = 0; probe_names[i]; i++) {
+ if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE,
+ probe_names[i])))
+ ret = SR_ERR;
+ else
+ sdi->probes = g_slist_append(sdi->probes, probe);
+ }
+ } else if (!strcmp(stropt, mode_strings[ANALOG])) {
+ sdi->mode = ANALOG;
+ sr_dev_probes_free(sdi);
+ for (i = 0; i < DS_MAX_ANALOG_PROBES_NUM; i++) {
+ if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE,
+ probe_names[i])))
+ ret = SR_ERR;
+ else
+ sdi->probes = g_slist_append(sdi->probes, probe);
+ }
+ } else {
+ ret = SR_ERR;
+ }
+ sr_dbg("%s: setting mode to %d", __func__, sdi->mode);
+ }else if (id == SR_CONF_PATTERN_MODE) {
+ stropt = g_variant_get_string(data, NULL);
+ ret = SR_OK;
+ if (!strcmp(stropt, pattern_strings[PATTERN_SINE])) {
+ devc->sample_generator = PATTERN_SINE;
+ } else if (!strcmp(stropt, pattern_strings[PATTERN_SQUARE])) {
+ devc->sample_generator = PATTERN_SQUARE;
+ } else if (!strcmp(stropt, pattern_strings[PATTERN_TRIANGLE])) {
+ devc->sample_generator = PATTERN_TRIANGLE;
+ } else if (!strcmp(stropt, pattern_strings[PATTERN_SAWTOOTH])) {
+ devc->sample_generator = PATTERN_SAWTOOTH;
+ } else if (!strcmp(stropt, pattern_strings[PATTERN_RANDOM])) {
+ devc->sample_generator = PATTERN_RANDOM;
+ } else {
+ ret = SR_ERR;
+ }
+ sr_dbg("%s: setting pattern to %d",
+ __func__, devc->sample_generator);
+ } else {
+ ret = SR_ERR_NA;
+ }
- if (limit_samples)
- nb_to_send = MIN(nb_to_send,
- limit_samples - mydata->samples_counter);
+ return ret;
+}
- /* Make sure we don't overflow. */
- nb_to_send = MIN(nb_to_send, BUFSIZE);
+static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi)
+{
+ GVariant *gvar;
+ GVariantBuilder gvb;
- if (nb_to_send) {
- samples_generator(buf, nb_to_send, data);
- mydata->samples_counter += nb_to_send;
+ (void)sdi;
- g_io_channel_write_chars(channels[1], (gchar *)&buf,
- nb_to_send, (gsize *)&bytes_written, NULL);
- }
+ switch (key) {
+ case SR_CONF_DEVICE_OPTIONS:
+// *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
+// hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
+ *data = g_variant_new_from_data(G_VARIANT_TYPE("ai"),
+ hwcaps, ARRAY_SIZE(hwcaps)*sizeof(int32_t), TRUE, NULL, NULL);
+ break;
+ case SR_CONF_DEVICE_CONFIGS:
+// *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
+// hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
+ *data = g_variant_new_from_data(G_VARIANT_TYPE("ai"),
+ hwoptions, ARRAY_SIZE(hwoptions)*sizeof(int32_t), TRUE, NULL, NULL);
+ 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));
+ gvar = g_variant_new_from_data(G_VARIANT_TYPE("at"),
+ samplerates, ARRAY_SIZE(samplerates)*sizeof(uint64_t), TRUE, NULL, NULL);
+ g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
+ *data = g_variant_builder_end(&gvb);
+ break;
+ case SR_CONF_DEVICE_MODE:
+ *data = g_variant_new_strv(mode_strings, ARRAY_SIZE(mode_strings));
+ break;
+ case SR_CONF_PATTERN_MODE:
+ *data = g_variant_new_strv(pattern_strings, ARRAY_SIZE(pattern_strings));
+ break;
+ default:
+ return SR_ERR_NA;
+ }
- /* Check if we're done. */
- if ((limit_msec && time_cur * 1000 > limit_msec) ||
- (limit_samples && mydata->samples_counter >= limit_samples))
- {
- close(mydata->pipe_fds[1]);
- thread_running = 0;
- }
+ return SR_OK;
+}
- g_usleep(10);
+static void samples_generator(uint16_t *buf, uint64_t size,
+ struct dev_context *devc)
+{
+ static uint16_t p = 0;
+ uint64_t i;
+ uint16_t demo_data;
+
+ switch (devc->sample_generator) {
+ case PATTERN_SINE: /* Sine */
+ for (i = 0; i < size; i++) {
+ if (i%CONST_LEN == 0) {
+ demo_data = 0x8000 * sin(2 * PI * p / 0xffff) + 0x8000;
+ p += CONST_LEN;
+ }
+ *(buf + i) = demo_data;
+ }
+ break;
+ case PATTERN_SQUARE:
+ for (i = 0; i < size; i++) {
+ if (i%CONST_LEN == 0) {
+ demo_data = p > 0x7fff ? 0xf000 : 0x1000;
+ p += CONST_LEN;
+ }
+ *(buf + i) = demo_data;
+ }
+ break;
+ case PATTERN_TRIANGLE:
+ for (i = 0; i < size; i++) {
+ if (i%CONST_LEN == 0) {
+ demo_data = p > 0x7fff ? 0xffff * (2.0f * (0x10000 - p) / 0x10000) :
+ 0xffff * (2.0f * p / 0x10000);
+ p += CONST_LEN;
+ }
+ *(buf + i) = demo_data;
+ }
+ break;
+ case PATTERN_SAWTOOTH:
+ for (i = 0; i < size; i++) {
+ if (i%CONST_LEN == 0) {
+ demo_data = p;
+ p += CONST_LEN;
+ }
+ *(buf + i) = demo_data;
+ }
+ break;
+ case PATTERN_RANDOM: /* Random */
+ for (i = 0; i < size; i++) {
+ if (i%CONST_LEN == 0)
+ demo_data = (uint16_t)(rand() * (0x10000 * 1.0f / RAND_MAX));
+ *(buf + i) = demo_data;
+ }
+ break;
+ default:
+ sr_err("Unknown pattern: %d.", devc->sample_generator);
+ break;
}
}
/* Callback handling data */
-static int receive_data(int fd, int revents, void *user_data)
+static int receive_data(int fd, int revents, const struct sr_dev_inst *sdi)
{
- struct sr_datafeed_packet packet;
- char c[BUFSIZE];
- gsize z;
-
- /* Avoid compiler warnings. */
- fd = fd;
- revents = revents;
-
- do {
- g_io_channel_read_chars(channels[0],
- (gchar *)&c, BUFSIZE, &z, NULL);
-
- if (z > 0) {
- packet.type = SR_DF_LOGIC;
- packet.length = z;
- packet.unitsize = 1;
- packet.payload = c;
- session_bus(user_data, &packet);
- }
- } while (z > 0);
-
- if (!thread_running && z <= 0)
- {
- /* Make sure we don't receive more packets */
- g_io_channel_close(channels[0]);
+ struct dev_context *devc = sdi->priv;
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_logic logic;
+ struct sr_datafeed_analog analog;
+ //uint16_t buf[BUFSIZE];
+ uint16_t *buf;
+ static uint64_t samples_to_send, expected_samplenum, sending_now;
+ int64_t time, elapsed;
+ static uint16_t last_sample = 0;
+ uint16_t cur_sample;
+ int i;
+
+ (void)fd;
+ (void)revents;
+
+ if (!(buf = g_try_malloc(BUFSIZE*sizeof(uint16_t)))) {
+ sr_err("buf for receive_data malloc failed.");
+ return FALSE;
+ }
+
+ /* How many "virtual" samples should we have collected by now? */
+ time = g_get_monotonic_time();
+ elapsed = time - devc->starttime;
+ devc->starttime = time;
+ expected_samplenum = elapsed * devc->cur_samplerate / 1000000;
+ /* Of those, how many do we still have to send? */
+ //samples_to_send = (expected_samplenum - devc->samples_counter) / CONST_LEN * CONST_LEN;
+ samples_to_send = expected_samplenum / CONST_LEN * CONST_LEN;
+
+ if (devc->limit_samples) {
+ if (sdi->mode == LOGIC)
+ samples_to_send = MIN(samples_to_send,
+ devc->limit_samples - devc->samples_counter);
+ else if (sdi->mode == ANALOG)
+ samples_to_send = MIN(samples_to_send,
+ devc->limit_samples);
+ }
+
+ while (samples_to_send > 0) {
+ sending_now = MIN(samples_to_send, BUFSIZE);
+ samples_generator(buf, sending_now, devc);
+
+ if (devc->trigger_stage != 0) {
+ for (i = 0; i < sending_now; i++) {
+ if (devc->trigger_edge == 0) {
+ if ((*(buf + i) | devc->trigger_mask) ==
+ (devc->trigger_value | devc->trigger_mask)) {
+ devc->trigger_stage = 0;
+ break;
+ }
+ } else {
+ cur_sample = *(buf + i);
+ if (((last_sample & devc->trigger_edge) ==
+ (~devc->trigger_value & devc->trigger_edge)) &&
+ ((cur_sample | devc->trigger_mask) ==
+ (devc->trigger_value | devc->trigger_mask)) &&
+ ((cur_sample & devc->trigger_edge) ==
+ (devc->trigger_value & devc->trigger_edge))) {
+ devc->trigger_stage = 0;
+ break;
+ }
+ last_sample = cur_sample;
+ }
+ }
+ if (devc->trigger_stage == 0) {
+ struct ds_trigger_pos demo_trigger_pos;
+ demo_trigger_pos.real_pos = i;
+ packet.type = SR_DF_TRIGGER;
+ packet.payload = &demo_trigger_pos;
+ sr_session_send(sdi, &packet);
+ }
+ }
+
+ if (devc->trigger_stage == 0){
+ samples_to_send -= sending_now;
+ if (sdi->mode == LOGIC) {
+ packet.type = SR_DF_LOGIC;
+ packet.payload = &logic;
+ logic.length = sending_now * (NUM_PROBES >> 3);
+ logic.unitsize = (NUM_PROBES >> 3);
+ logic.data = buf;
+ } else if (sdi->mode == ANALOG) {
+ packet.type = SR_DF_ANALOG;
+ packet.payload = &analog;
+ analog.probes = sdi->probes;
+ analog.num_samples = sending_now;
+ analog.mq = SR_MQ_VOLTAGE;
+ analog.unit = SR_UNIT_VOLT;
+ analog.mqflags = SR_MQFLAG_AC;
+ analog.data = buf;
+ }
+
+ sr_session_send(sdi, &packet);
+ if (sdi->mode == LOGIC)
+ devc->samples_counter += sending_now;
+ else if (sdi->mode == ANALOG)
+ devc->samples_counter = (devc->samples_counter + sending_now) % devc->limit_samples;
+ } else {
+ break;
+ }
+ }
- /* Send last packet. */
- packet.type = SR_DF_END;
- session_bus(user_data, &packet);
+ if (sdi->mode == LOGIC &&
+ devc->limit_samples &&
+ devc->samples_counter >= devc->limit_samples) {
+ sr_info("Requested number of samples reached.");
+ hw_dev_acquisition_stop(sdi, NULL);
+ g_free(buf);
+ return TRUE;
+ }
- return FALSE;
- }
+ g_free(buf);
return TRUE;
}
-static int hw_start_acquisition(int device_index, gpointer session_device_id)
+static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
+ void *cb_data)
{
- struct sr_datafeed_packet *packet;
- struct sr_datafeed_header *header;
- struct databag *mydata;
-
- mydata = malloc(sizeof(struct databag));
- if (!mydata)
- return SR_ERR_MALLOC;
-
- mydata->sample_generator = default_genmode;
- mydata->session_device_id = session_device_id;
- mydata->device_index = device_index;
- mydata->samples_counter = 0;
-
- if (pipe(mydata->pipe_fds))
+ struct dev_context *const devc = sdi->priv;
+
+ (void)cb_data;
+
+ if (sdi->status != SR_ST_ACTIVE)
+ return SR_ERR_DEV_CLOSED;
+
+ //devc->cb_data = cb_data;
+ devc->samples_counter = 0;
+ devc->stop = FALSE;
+
+ /*
+ * trigger setting
+ */
+ if (!trigger->trigger_en || sdi->mode == ANALOG) {
+ devc->trigger_stage = 0;
+ } else {
+ devc->trigger_mask = ds_trigger_get_mask0(TriggerStages);
+ devc->trigger_value = ds_trigger_get_value0(TriggerStages);
+ devc->trigger_edge = ds_trigger_get_edge0(TriggerStages);
+ if (devc->trigger_edge != 0)
+ devc->trigger_stage = 2;
+ else
+ devc->trigger_stage = 1;
+ }
+
+ /*
+ * 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)) {
+ /* TODO: Better error message. */
+ sr_err("%s: pipe() failed", __func__);
return SR_ERR;
+ }
+
+ devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]);
- channels[0] = g_io_channel_unix_new(mydata->pipe_fds[0]);
- channels[1] = g_io_channel_unix_new(mydata->pipe_fds[1]);
+ 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(channels[0], NULL, NULL);
- g_io_channel_set_encoding(channels[1], NULL, NULL);
+ g_io_channel_set_encoding(devc->channel, NULL, NULL);
/* Make channels to unbuffered. */
- g_io_channel_set_buffered(channels[0], FALSE);
- g_io_channel_set_buffered(channels[1], FALSE);
-
- source_add(mydata->pipe_fds[0], G_IO_IN | G_IO_ERR, 40, receive_data,
- session_device_id);
-
- /* Run the demo thread. */
- g_thread_init(NULL);
- /* this needs to be done between g_thread_init() and g_thread_create() */
- mydata->timer = g_timer_new();
- thread_running = 1;
- my_thread =
- g_thread_create((GThreadFunc)thread_func, mydata, TRUE, NULL);
- if (!my_thread)
- return SR_ERR;
+ g_io_channel_set_buffered(devc->channel, FALSE);
- packet = malloc(sizeof(struct sr_datafeed_packet));
- header = malloc(sizeof(struct sr_datafeed_header));
- if (!packet || !header)
- return SR_ERR_MALLOC;
-
- packet->type = SR_DF_HEADER;
- packet->length = sizeof(struct sr_datafeed_header);
- packet->payload = (unsigned char *)header;
- header->feed_version = 1;
- gettimeofday(&header->starttime, NULL);
- header->samplerate = cur_samplerate;
- header->protocol_id = SR_PROTO_RAW;
- header->num_logic_probes = NUM_PROBES;
- header->num_analog_probes = 0;
- session_bus(session_device_id, packet);
- free(header);
- free(packet);
+ sr_session_source_add_channel(devc->channel, G_IO_IN | G_IO_ERR,
+ 100, receive_data, sdi);
+
+ /* Send header packet to the session bus. */
+ //std_session_send_df_header(cb_data, LOG_PREFIX);
+ 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 void hw_stop_acquisition(int device_index, gpointer session_device_id)
+static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
- /* Avoid compiler warnings. */
- device_index = device_index;
- session_device_id = session_device_id;
+ struct dev_context *const devc = sdi->priv;
+ struct sr_datafeed_packet packet;
+
+ (void)cb_data;
+
+ sr_dbg("Stopping aquisition.");
+
+ devc->stop = TRUE;
+ sr_session_source_remove_channel(devc->channel);
+ g_io_channel_shutdown(devc->channel, FALSE, NULL);
+ g_io_channel_unref(devc->channel);
+ devc->channel = NULL;
- /* Stop generate thread. */
- thread_running = 0;
+ /* Send last packet. */
+ packet.type = SR_DF_END;
+ sr_session_send(sdi, &packet);
+
+ return SR_OK;
+}
+
+static int hw_dev_test(struct sr_dev_inst *sdi)
+{
+ if (sdi)
+ return SR_OK;
+ else
+ return SR_ERR;
}
-struct sr_device_plugin demo_plugin_info = {
- "demo",
- "Demo driver and pattern generator",
- 1,
- hw_init,
- hw_cleanup,
- hw_opendev,
- hw_closedev,
- hw_get_device_info,
- hw_get_status,
- hw_get_capabilities,
- hw_set_configuration,
- hw_start_acquisition,
- hw_stop_acquisition,
+SR_PRIV struct sr_dev_driver demo_driver_info = {
+ .name = "demo",
+ .longname = "Demo driver and pattern generator",
+ .api_version = 1,
+ .init = hw_init,
+ .cleanup = hw_cleanup,
+ .scan = hw_scan,
+ .dev_list = hw_dev_list,
+ .dev_clear = clear_instances,
+ .config_get = config_get,
+ .config_set = config_set,
+ .config_list = config_list,
+ .dev_open = hw_dev_open,
+ .dev_close = hw_dev_close,
+ .dev_test = hw_dev_test,
+ .dev_acquisition_start = hw_dev_acquisition_start,
+ .dev_acquisition_stop = hw_dev_acquisition_stop,
+ .priv = NULL,
};