/*
- * 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>
#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)
+/* 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 8
/* 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;
/* 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;
-static uint64_t cur_samplerate = SR_KHZ(200);
-static uint64_t limit_samples = 0;
-static uint64_t limit_msec = 0;
-static int default_pattern = PATTERN_SIGROK;
-static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
+static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
-static int clear_instances(void)
+static int dev_clear(void)
{
- /* Nothing needed so far. */
-
- return SR_OK;
+ return std_dev_clear(di, NULL);
}
-static int hw_init(struct sr_context *sr_ctx)
+static int init(struct sr_context *sr_ctx)
{
- return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN);
+ return std_init(sr_ctx, di, LOG_PREFIX);
}
-static GSList *hw_scan(GSList *options)
+static GSList *scan(GSList *options)
{
struct sr_dev_inst *sdi;
struct sr_probe *probe;
struct drv_context *drvc;
+ struct dev_context *devc;
GSList *devices;
int i;
sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, DEMONAME, NULL, NULL);
if (!sdi) {
- sr_err("%s: sr_dev_inst_new failed", __func__);
- return 0;
+ sr_err("Device instance creation failed.");
+ return NULL;
}
sdi->driver = di;
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 GSList *hw_dev_list(void)
+static GSList *dev_list(void)
{
return ((struct drv_context *)(di->priv))->instances;
}
-static int hw_dev_open(struct sr_dev_inst *sdi)
+static int dev_open(struct sr_dev_inst *sdi)
{
- (void)sdi;
-
- /* Nothing needed so far. */
+ sdi->status = SR_ST_ACTIVE;
return SR_OK;
}
-static int hw_dev_close(struct sr_dev_inst *sdi)
+static int dev_close(struct sr_dev_inst *sdi)
{
- (void)sdi;
-
- /* Nothing needed so far. */
+ sdi->status = SR_ST_INACTIVE;
return SR_OK;
}
-static int hw_cleanup(void)
+static int cleanup(void)
{
- /* Nothing needed so far. */
- return SR_OK;
+ return dev_clear();
}
-static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi)
+static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi,
+ const struct sr_probe_group *probe_group)
{
- (void)sdi;
+ struct dev_context *const devc = sdi->priv;
+
+ (void)probe_group;
switch (id) {
case SR_CONF_SAMPLERATE:
- *data = g_variant_new_uint64(cur_samplerate);
+ *data = g_variant_new_uint64(devc->cur_samplerate);
break;
case SR_CONF_LIMIT_SAMPLES:
- *data = g_variant_new_uint64(limit_samples);
+ *data = g_variant_new_uint64(devc->limit_samples);
break;
case SR_CONF_LIMIT_MSEC:
- *data = g_variant_new_uint64(limit_msec);
+ *data = g_variant_new_uint64(devc->limit_msec);
break;
case SR_CONF_PATTERN_MODE:
- switch (default_pattern) {
+ switch (devc->sample_generator) {
case PATTERN_SIGROK:
*data = g_variant_new_string(STR_PATTERN_SIGROK);
break;
}
break;
default:
- return SR_ERR_ARG;
+ return SR_ERR_NA;
}
return SR_OK;
}
-static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi)
+static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi,
+ const struct sr_probe_group *probe_group)
{
int ret;
const char *stropt;
- (void)sdi;
+ (void)probe_group;
+ struct dev_context *const devc = sdi->priv;
+
+ if (sdi->status != SR_ST_ACTIVE)
+ return SR_ERR_DEV_CLOSED;
if (id == SR_CONF_SAMPLERATE) {
- cur_samplerate = g_variant_get_uint64(data);
+ devc->cur_samplerate = g_variant_get_uint64(data);
sr_dbg("%s: setting samplerate to %" PRIu64, __func__,
- cur_samplerate);
+ devc->cur_samplerate);
ret = SR_OK;
} else if (id == SR_CONF_LIMIT_SAMPLES) {
- limit_msec = 0;
- limit_samples = g_variant_get_uint64(data);
+ devc->limit_msec = 0;
+ devc->limit_samples = g_variant_get_uint64(data);
sr_dbg("%s: setting limit_samples to %" PRIu64, __func__,
- limit_samples);
+ devc->limit_samples);
ret = SR_OK;
} else if (id == SR_CONF_LIMIT_MSEC) {
- limit_msec = g_variant_get_uint64(data);
- limit_samples = 0;
+ devc->limit_msec = g_variant_get_uint64(data);
+ devc->limit_samples = 0;
sr_dbg("%s: setting limit_msec to %" PRIu64, __func__,
- limit_msec);
+ 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)) {
- default_pattern = PATTERN_SIGROK;
+ devc->sample_generator = PATTERN_SIGROK;
} else if (!strcmp(stropt, STR_PATTERN_RANDOM)) {
- default_pattern = PATTERN_RANDOM;
+ devc->sample_generator = PATTERN_RANDOM;
} else if (!strcmp(stropt, STR_PATTERN_INC)) {
- default_pattern = PATTERN_INC;
+ devc->sample_generator = PATTERN_INC;
} else if (!strcmp(stropt, STR_PATTERN_ALL_LOW)) {
- default_pattern = PATTERN_ALL_LOW;
+ devc->sample_generator = PATTERN_ALL_LOW;
} else if (!strcmp(stropt, STR_PATTERN_ALL_HIGH)) {
- default_pattern = PATTERN_ALL_HIGH;
+ devc->sample_generator = PATTERN_ALL_HIGH;
} else {
ret = SR_ERR;
}
- sr_dbg("%s: setting pattern to %d", __func__, default_pattern);
+ sr_dbg("%s: setting pattern to %d",
+ __func__, devc->sample_generator);
} else {
- ret = SR_ERR;
+ ret = SR_ERR_NA;
}
return ret;
}
-static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi)
+static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
+ const struct sr_probe_group *probe_group)
{
GVariant *gvar;
GVariantBuilder gvb;
(void)sdi;
+ (void)probe_group;
switch (key) {
case SR_CONF_DEVICE_OPTIONS:
*data = g_variant_new_strv(pattern_strings, ARRAY_SIZE(pattern_strings));
break;
default:
- return SR_ERR_ARG;
+ return SR_ERR_NA;
}
return SR_OK;
/* How many "virtual" samples should we have collected by now? */
time = g_get_monotonic_time();
elapsed = time - devc->starttime;
- expected_samplenum = elapsed * cur_samplerate / 1000000;
+ 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 (limit_samples) {
+ if (devc->limit_samples) {
samples_to_send = MIN(samples_to_send,
- limit_samples - devc->samples_counter);
+ devc->limit_samples - devc->samples_counter);
}
while (samples_to_send > 0) {
devc->samples_counter += sending_now;
}
- if (limit_samples && devc->samples_counter >= limit_samples) {
+ if (devc->limit_samples &&
+ devc->samples_counter >= devc->limit_samples) {
sr_info("Requested number of samples reached.");
- hw_dev_acquisition_stop(NULL, cb_data);
+ dev_acquisition_stop(devc->sdi, cb_data);
return TRUE;
}
return TRUE;
}
-static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
- void *cb_data)
+static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
{
- struct dev_context *devc;
+ struct dev_context *const devc = sdi->priv;
- (void)sdi;
+ if (sdi->status != SR_ST_ACTIVE)
+ return SR_ERR_DEV_CLOSED;
- /* TODO: 'devc' is never g_free()'d? */
- if (!(devc = g_try_malloc(sizeof(struct dev_context)))) {
- sr_err("%s: devc malloc failed", __func__);
- return SR_ERR_MALLOC;
- }
-
- devc->sample_generator = default_pattern;
devc->cb_data = cb_data;
devc->samples_counter = 0;
40, receive_data, devc);
/* Send header packet to the session bus. */
- std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);
+ std_session_send_df_header(cb_data, LOG_PREFIX);
/* We use this timestamp to decide how many more samples to send. */
devc->starttime = g_get_monotonic_time();
return SR_OK;
}
-static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
+static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
- struct dev_context *devc;
+ struct dev_context *const devc = sdi->priv;
struct sr_datafeed_packet packet;
- (void)sdi;
-
- devc = cb_data;
+ (void)cb_data;
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 = SR_DF_END;
.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,
+ .init = init,
+ .cleanup = cleanup,
+ .scan = scan,
+ .dev_list = dev_list,
+ .dev_clear = dev_clear,
.config_get = config_get,
.config_set = config_set,
.config_list = config_list,
- .dev_open = hw_dev_open,
- .dev_close = hw_dev_close,
- .dev_acquisition_start = hw_dev_acquisition_start,
- .dev_acquisition_stop = hw_dev_acquisition_stop,
+ .dev_open = dev_open,
+ .dev_close = dev_close,
+ .dev_acquisition_start = dev_acquisition_start,
+ .dev_acquisition_stop = dev_acquisition_stop,
.priv = NULL,
};
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