/*
- * 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 "config.h"
-
-#define BUFSIZE 4096
-
-#define NUM_PROBES 8
-#define NUM_TRIGGER_STAGES 4
-#define TRIGGER_TYPES "01"
-
-/* Software trigger implementation: positive values indicate trigger stage. */
-#define TRIGGER_FIRED -1
-
-#define USB_MODEL_NAME "demodevice"
-#define USB_VENDOR_NAME "demovendor"
-#define USB_MODEL_VERSION "1.0"
+#ifdef _WIN32
+#include <io.h>
+#include <fcntl.h>
+#define pipe(fds) _pipe(fds, 4096, _O_BINARY)
+#endif
+#include "libsigrok.h"
+#include "libsigrok-internal.h"
+
+/* Message logging helpers with driver-specific prefix string. */
+#define DRIVER_LOG_DOMAIN "demo: "
+#define sr_log(l, s, args...) sr_log(l, DRIVER_LOG_DOMAIN s, ## args)
+#define sr_spew(s, args...) sr_spew(DRIVER_LOG_DOMAIN s, ## args)
+#define sr_dbg(s, args...) sr_dbg(DRIVER_LOG_DOMAIN s, ## args)
+#define sr_info(s, args...) sr_info(DRIVER_LOG_DOMAIN s, ## args)
+#define sr_warn(s, args...) sr_warn(DRIVER_LOG_DOMAIN s, ## args)
+#define sr_err(s, args...) sr_err(DRIVER_LOG_DOMAIN s, ## args)
+
+/* TODO: Number of probes should be configurable. */
+#define NUM_PROBES 8
+
+#define DEMONAME "Demo device"
+
+/* The size of chunks to send through the session bus. */
+/* TODO: Should be configurable. */
+#define BUFSIZE 4096
+
+#define STR_PATTERN_SIGROK "sigrok"
+#define STR_PATTERN_RANDOM "random"
+#define STR_PATTERN_INC "incremental"
+#define STR_PATTERN_ALL_LOW "all-low"
+#define STR_PATTERN_ALL_HIGH "all-high"
+
+/* Supported patterns which we can generate */
+enum {
+ /**
+ * Pattern which spells "sigrok" using '0's (with '1's as "background")
+ * when displayed using the 'bits' output format.
+ */
+ PATTERN_SIGROK,
+
+ /** Pattern which consists of (pseudo-)random values on all probes. */
+ PATTERN_RANDOM,
+
+ /**
+ * Pattern which consists of incrementing numbers.
+ * TODO: Better description.
+ */
+ PATTERN_INC,
+
+ /** Pattern where all probes have a low logic state. */
+ PATTERN_ALL_LOW,
+
+ /** Pattern where all probes have a high logic state. */
+ PATTERN_ALL_HIGH,
+};
-#define GENMODE_RANDOM 1
-#define GENMODE_INC 2
+/* 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;
+ uint64_t samples_counter;
+ void *cb_data;
+ int64_t starttime;
+};
-static GThread *my_thread;
-static int thread_running;
+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 int capabilities[] = {
- HWCAP_LOGIC_ANALYZER,
- HWCAP_SAMPLERATE,
- HWCAP_LIMIT_SAMPLES,
+static const uint64_t samplerates[] = {
+ SR_HZ(1),
+ SR_GHZ(1),
+ SR_HZ(1),
};
-/* Random selection of samplerates this "device" shall support. */
-static uint64_t supported_samplerates[] = {
- KHZ(100),
- KHZ(500),
- MHZ(1),
- MHZ(2),
- MHZ(12),
- MHZ(24),
- 0,
+static const char *pattern_strings[] = {
+ "sigrok",
+ "random",
+ "incremental",
+ "all-low",
+ "all-high",
};
-static struct samplerates samplerates = {
- KHZ(100),
- MHZ(24),
- 0,
- supported_samplerates,
+/* We name the probes 0-7 on our demo driver. */
+static const char *probe_names[NUM_PROBES + 1] = {
+ "0", "1", "2", "3", "4", "5", "6", "7",
+ NULL,
};
-struct databag {
- int pipe_fds[2];
- uint8_t sample_generator;
- uint8_t thread_running;
- uint64_t samples_counter;
- int device_index;
- int loop_sleep;
- gpointer session_device_id;
+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,
};
-/* List of struct sigrok_device_instance, maintained by opendev()/closedev(). */
-static GSList *device_instances = NULL;
+/* Private, per-device-instance driver context. */
+/* TODO: struct context as with the other drivers. */
+
+/* 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;
-/* TODO: All of these should go in a device-specific struct. */
-static uint64_t cur_samplerate = 0;
-static uint64_t limit_samples = 0;
-// static uint8_t probe_mask = 0;
-// static uint8_t trigger_mask[NUM_TRIGGER_STAGES] = { 0 };
-// static uint8_t trigger_value[NUM_TRIGGER_STAGES] = { 0 };
-// static uint8_t trigger_buffer[NUM_TRIGGER_STAGES] = { 0 };
+static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
+
+static int clear_instances(void)
+{
+ /* Nothing needed so far. */
-// static int trigger_stage = TRIGGER_FIRED;
+ return SR_OK;
+}
-static int hw_set_configuration(int device_index, int capability, void *value);
-static void hw_stop_acquisition(int device_index, gpointer session_device_id);
+static int hw_init(struct sr_context *sr_ctx)
+{
+ return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN);
+}
-static int hw_init(char *deviceinfo)
+static GSList *hw_scan(GSList *options)
{
- /* Avoid compiler warning. */
- deviceinfo = deviceinfo;
+ struct sr_dev_inst *sdi;
+ struct sr_probe *probe;
+ struct drv_context *drvc;
+ struct dev_context *devc;
+ GSList *devices;
+ int i;
- struct sigrok_device_instance *sdi;
+ (void)options;
- sdi = sigrok_device_instance_new(0, ST_ACTIVE,
- USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION);
+ drvc = di->priv;
- if (!sdi)
- return 0;
- device_instances = g_slist_append(device_instances, sdi);
+ devices = NULL;
- return 1;
+ sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, DEMONAME, NULL, NULL);
+ if (!sdi) {
+ sr_err("Device instance creation failed.");
+ return NULL;
+ }
+ sdi->driver = di;
+
+ 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);
+ }
+
+ 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;
+ }
+
+ devc->sdi = sdi;
+ devc->cur_samplerate = SR_KHZ(200);
+ devc->limit_samples = 0;
+ devc->limit_msec = 0;
+ devc->sample_generator = PATTERN_SIGROK;
+
+ sdi->priv = devc;
+
+ return devices;
}
-static int hw_opendev(int device_index)
+static GSList *hw_dev_list(void)
{
- /* Avoid compiler warning. */
- device_index = device_index;
-
- /* Nothing needed so far. */
- return SIGROK_OK;
+ return ((struct drv_context *)(di->priv))->instances;
}
-static void hw_closedev(int device_index)
+static int hw_dev_open(struct sr_dev_inst *sdi)
{
- /* Avoid compiler warning. */
- device_index = device_index;
+ (void)sdi;
/* Nothing needed so far. */
+
+ return SR_OK;
}
-static void hw_cleanup(void)
+static int hw_dev_close(struct sr_dev_inst *sdi)
{
+ (void)sdi;
+
/* Nothing needed so far. */
+
+ return SR_OK;
}
-static void *hw_get_device_info(int device_index, int device_info_id)
+static int hw_cleanup(void)
{
- struct sigrok_device_instance *sdi;
- void *info = NULL;
+ 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;
+ }
+ sr_dev_inst_free(sdi);
+ }
+ g_slist_free(drvc->instances);
+ drvc->instances = NULL;
- if (!(sdi = get_sigrok_device_instance(device_instances, device_index)))
- return NULL;
+ return ret;
+}
- switch (device_info_id) {
- case DI_INSTANCE:
- info = sdi;
- break;
- case DI_NUM_PROBES:
- info = GINT_TO_POINTER(NUM_PROBES);
+static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi)
+{
+ struct dev_context *const devc = sdi->priv;
+
+ switch (id) {
+ case SR_CONF_SAMPLERATE:
+ *data = g_variant_new_uint64(devc->cur_samplerate);
break;
- case DI_SAMPLERATES:
- info = &samplerates;
+ case SR_CONF_LIMIT_SAMPLES:
+ *data = g_variant_new_uint64(devc->limit_samples);
break;
- case DI_TRIGGER_TYPES:
- info = TRIGGER_TYPES;
+ case SR_CONF_LIMIT_MSEC:
+ *data = g_variant_new_uint64(devc->limit_msec);
break;
- case DI_CUR_SAMPLERATE:
- info = &cur_samplerate;
+ case SR_CONF_PATTERN_MODE:
+ switch (devc->sample_generator) {
+ case PATTERN_SIGROK:
+ *data = g_variant_new_string(STR_PATTERN_SIGROK);
+ break;
+ case PATTERN_RANDOM:
+ *data = g_variant_new_string(STR_PATTERN_RANDOM);
+ break;
+ case PATTERN_INC:
+ *data = g_variant_new_string(STR_PATTERN_INC);
+ break;
+ case PATTERN_ALL_LOW:
+ *data = g_variant_new_string(STR_PATTERN_ALL_LOW);
+ break;
+ case PATTERN_ALL_HIGH:
+ *data = g_variant_new_string(STR_PATTERN_ALL_HIGH);
+ break;
+ }
break;
+ default:
+ return SR_ERR_NA;
}
- return info;
+ return SR_OK;
}
-static int hw_get_status(int device_index)
+static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi)
{
- /* Avoid compiler warning. */
- device_index = device_index;
+ int ret;
+ const char *stropt;
+
+ struct dev_context *const devc = sdi->priv;
+
+ 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_PATTERN_MODE) {
+ stropt = g_variant_get_string(data, NULL);
+ ret = SR_OK;
+ if (!strcmp(stropt, STR_PATTERN_SIGROK)) {
+ devc->sample_generator = PATTERN_SIGROK;
+ } else if (!strcmp(stropt, STR_PATTERN_RANDOM)) {
+ devc->sample_generator = PATTERN_RANDOM;
+ } else if (!strcmp(stropt, STR_PATTERN_INC)) {
+ devc->sample_generator = PATTERN_INC;
+ } else if (!strcmp(stropt, STR_PATTERN_ALL_LOW)) {
+ devc->sample_generator = PATTERN_ALL_LOW;
+ } else if (!strcmp(stropt, STR_PATTERN_ALL_HIGH)) {
+ devc->sample_generator = PATTERN_ALL_HIGH;
+ } else {
+ ret = SR_ERR;
+ }
+ sr_dbg("%s: setting pattern to %d",
+ __func__, devc->sample_generator);
+ } else {
+ ret = SR_ERR_NA;
+ }
- return 0; /* FIXME */
+ return ret;
}
-static int *hw_get_capabilities(void)
+static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi)
{
- return capabilities;
-}
+ GVariant *gvar;
+ GVariantBuilder gvb;
-static int hw_set_configuration(int device_index, int capability, void *value)
-{
- int ret;
- uint64_t *tmp_u64;
-
- /* Avoid compiler warning. */
- device_index = device_index;
-
- if (capability == HWCAP_SAMPLERATE) {
- cur_samplerate = *(uint64_t *) value;
- ret = SIGROK_OK;
- } else if (capability == HWCAP_PROBECONFIG) {
- // ret = configure_probes((GSList *) value); FIXME
- ret = SIGROK_OK;
- } else if (capability == HWCAP_LIMIT_SAMPLES) {
- tmp_u64 = value;
- limit_samples = *tmp_u64;
- ret = SIGROK_OK;
- } else {
- ret = SIGROK_ERR;
+ (void)sdi;
+
+ switch (key) {
+ case SR_CONF_DEVICE_OPTIONS:
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
+ hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
+ break;
+ case SR_CONF_SAMPLERATE:
+ g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
+ gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
+ ARRAY_SIZE(samplerates), sizeof(uint64_t));
+ g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
+ *data = g_variant_builder_end(&gvb);
+ break;
+ case SR_CONF_PATTERN_MODE:
+ *data = g_variant_new_strv(pattern_strings, ARRAY_SIZE(pattern_strings));
+ break;
+ default:
+ return SR_ERR_NA;
}
- return ret;
+ return SR_OK;
}
-static void samples_generator(uint8_t *buf, uint64_t size, void *data)
+static void samples_generator(uint8_t *buf, uint64_t size,
+ struct dev_context *devc)
{
- struct databag *mydata = data;
+ static uint64_t p = 0;
uint64_t i;
+ /* TODO: Needed? */
memset(buf, 0, size);
- switch (mydata->sample_generator) {
- case GENMODE_RANDOM: /* Random */
+ switch (devc->sample_generator) {
+ case PATTERN_SIGROK: /* sigrok pattern */
+ for (i = 0; i < size; i++) {
+ *(buf + i) = ~(pattern_sigrok[
+ p++ % sizeof(pattern_sigrok)] >> 1);
+ }
+ break;
+ case PATTERN_RANDOM: /* Random */
for (i = 0; i < size; i++)
*(buf + i) = (uint8_t)(rand() & 0xff);
break;
- case GENMODE_INC: /* Simple increment */
+ case PATTERN_INC: /* Simple increment */
for (i = 0; i < size; i++)
- *(buf + i) = i;
+ *(buf + i) = p++;
+ break;
+ case PATTERN_ALL_LOW: /* All probes are low */
+ memset(buf, 0x00, size);
+ break;
+ case PATTERN_ALL_HIGH: /* All probes are high */
+ memset(buf, 0xff, size);
+ break;
+ default:
+ sr_err("Unknown pattern: %d.", devc->sample_generator);
break;
}
}
-/* Thread function */
-static void thread_func(void *data)
+/* Callback handling data */
+static int receive_data(int fd, int revents, void *cb_data)
{
- struct databag *mydata = data;
+ struct dev_context *devc = cb_data;
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_logic logic;
uint8_t buf[BUFSIZE];
- uint64_t nb_to_send = 0;
-
- while (thread_running) {
- nb_to_send = limit_samples - mydata->samples_counter;
-
- if (nb_to_send == 0) {
- close(mydata->pipe_fds[1]);
- thread_running = 0;
- hw_stop_acquisition(mydata->device_index,
- mydata->session_device_id);
- } else if (nb_to_send > BUFSIZE) {
- nb_to_send = BUFSIZE;
- }
-
- samples_generator(buf, nb_to_send, data);
- mydata->samples_counter += nb_to_send;
+ static uint64_t samples_to_send, expected_samplenum, sending_now;
+ int64_t time, elapsed;
+
+ (void)fd;
+ (void)revents;
+
+ /* 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? */
+ samples_to_send = expected_samplenum - devc->samples_counter;
+
+ if (devc->limit_samples) {
+ samples_to_send = MIN(samples_to_send,
+ devc->limit_samples - devc->samples_counter);
+ }
- write(mydata->pipe_fds[1], &buf, nb_to_send);
- g_usleep(mydata->loop_sleep);
+ while (samples_to_send > 0) {
+ sending_now = MIN(samples_to_send, sizeof(buf));
+ samples_to_send -= sending_now;
+ samples_generator(buf, sending_now, devc);
+
+ packet.type = SR_DF_LOGIC;
+ packet.payload = &logic;
+ logic.length = sending_now;
+ logic.unitsize = 1;
+ logic.data = buf;
+ sr_session_send(devc->cb_data, &packet);
+ devc->samples_counter += sending_now;
}
-}
-/* Callback handling data */
-static int receive_data(int fd, int revents, void *user_data)
-{
- struct datafeed_packet packet;
- /* uint16_t samples[1000]; */
- char c[BUFSIZE];
- uint64_t z;
-
- /* Avoid compiler warnings. */
- revents = revents;
-
- z = read(fd, &c, BUFSIZE);
- if (z > 0) {
- packet.type = DF_LOGIC;
- packet.length = z;
- packet.unitsize = 1;
- packet.payload = c;
- session_bus(user_data, &packet);
+ if (devc->limit_samples &&
+ devc->samples_counter >= devc->limit_samples) {
+ sr_info("Requested number of samples reached.");
+ hw_dev_acquisition_stop(devc->sdi, cb_data);
+ return TRUE;
}
+
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 datafeed_packet *packet;
- struct datafeed_header *header;
- unsigned char *buf;
- struct databag *mydata;
+ struct dev_context *const devc = sdi->priv;
+
+ devc->cb_data = cb_data;
+ devc->samples_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)) {
+ /* TODO: Better error message. */
+ sr_err("%s: pipe() failed", __func__);
+ return SR_ERR;
+ }
- mydata = malloc(sizeof(struct databag));
- if (!mydata)
- return SIGROK_ERR_MALLOC;
+ devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]);
- mydata->sample_generator = GENMODE_RANDOM;
- mydata->session_device_id = session_device_id;
- mydata->device_index = device_index;
- mydata->samples_counter = 0;
- mydata->loop_sleep = 100000;
+ g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL);
- if (pipe(mydata->pipe_fds)) {
- fprintf(stderr, "Pipe failed.\n");
- return SIGROK_ERR_MALLOC; /* FIXME */
+ /* Set channel encoding to binary (default is UTF-8). */
+ g_io_channel_set_encoding(devc->channel, NULL, NULL);
- }
- 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);
- thread_running = 1;
- my_thread =
- g_thread_create((GThreadFunc)thread_func, mydata, TRUE, NULL);
- if (!my_thread) {
- fprintf(stderr, "demo: Thread creation failed.\n");
- return SIGROK_ERR_MALLOC; /* FIXME */
- }
+ /* Make channels to unbuffered. */
+ g_io_channel_set_buffered(devc->channel, FALSE);
+
+ sr_session_source_add_channel(devc->channel, G_IO_IN | G_IO_ERR,
+ 40, receive_data, devc);
- packet = malloc(sizeof(struct datafeed_packet));
- header = malloc(sizeof(struct datafeed_header));
- buf = malloc(2048);
- if (!packet || !header || !buf)
- return SIGROK_ERR_MALLOC;
-
- /* FIXME */
- memset(buf, 0x55, 2048);
-
- packet->type = DF_HEADER;
- packet->length = sizeof(struct datafeed_header);
- packet->payload = (unsigned char *)header;
- header->feed_version = 1;
- gettimeofday(&header->starttime, NULL);
- header->samplerate = cur_samplerate;
- header->protocol_id = PROTO_RAW;
- header->num_probes = NUM_PROBES;
- session_bus(session_device_id, packet);
- free(header);
- free(packet);
-
- return SIGROK_OK;
+ /* Send header packet to the session bus. */
+ std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);
+
+ /* We use this timestamp to decide how many more samples to send. */
+ devc->starttime = g_get_monotonic_time();
+
+ return SR_OK;
}
-/* This stops acquisition on ALL devices, ignoring device_index. */
-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)
{
- struct datafeed_packet packet;
+ struct dev_context *const devc = sdi->priv;
+ struct sr_datafeed_packet packet;
+
+ (void)cb_data;
- /* QUICK HACK */
- device_index = device_index;
+ sr_dbg("Stopping aquisition.");
+
+ sr_session_source_remove_channel(devc->channel);
+ g_io_channel_shutdown(devc->channel, FALSE, NULL);
+ g_io_channel_unref(devc->channel);
+ devc->channel = NULL;
/* Send last packet. */
- packet.type = DF_END;
- session_bus(session_device_id, &packet);
+ packet.type = SR_DF_END;
+ sr_session_send(devc->cb_data, &packet);
+
+ return SR_OK;
}
-struct device_plugin demo_plugin_info = {
- "demo",
- 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_acquisition_start = hw_dev_acquisition_start,
+ .dev_acquisition_stop = hw_dev_acquisition_stop,
+ .priv = NULL,
};
projects / libsigrok.git / blobdiff