/* Callback handling data */
static int receive_data(int fd, int revents, void *cb_data)
{
struct dev_context *devc = cb_data;
struct sr_datafeed_packet packet;
struct sr_datafeed_logic logic;
uint8_t buf[BUFSIZE];
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);
}
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;
}
if (devc->limit_samples &&
devc->samples_counter >= devc->limit_samples) {
sr_info("Requested number of samples reached.");
dev_acquisition_stop(devc->sdi, cb_data);
return TRUE;
}
return TRUE;
}
/* Thread function */
static void thread_func(void *data)
{
struct databag *mydata = data;
uint8_t buf[BUFSIZE];
uint64_t nb_to_send = 0;
int bytes_written;
double time_cur, time_last, time_diff;
time_last = g_timer_elapsed(mydata->timer, NULL);
while (thread_running) {
/* Rate control */
time_cur = g_timer_elapsed(mydata->timer, NULL);
time_diff = time_cur - time_last;
time_last = time_cur;
nb_to_send = cur_samplerate * time_diff;
if (limit_samples) {
nb_to_send = MIN(nb_to_send,
limit_samples - mydata->samples_counter);
}
/* Make sure we don't overflow. */
nb_to_send = MIN(nb_to_send, BUFSIZE);
if (nb_to_send) {
samples_generator(buf, nb_to_send, data);
mydata->samples_counter += nb_to_send;
g_io_channel_write_chars(channels[1], (gchar *)&buf,
nb_to_send, (gsize *)&bytes_written, NULL);
}
/* 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;
}
g_usleep(10);
}
}
/* Callback handling data */
static int receive_data(int fd, int revents, const struct sr_dev_inst *sdi)
{
struct dev_context *devc = sdi->priv;
struct sr_datafeed_packet packet;
struct sr_datafeed_logic logic;
struct sr_datafeed_dso dso;
struct sr_datafeed_analog analog;
static uint64_t samples_to_send = 0, expected_samplenum, sending_now;
int64_t time, elapsed;
static uint16_t last_sample = 0;
uint16_t cur_sample;
int i;
(void)fd;
(void)revents;
/* How many "virtual" samples should we have collected by now? */
time = g_get_monotonic_time();
elapsed = time - devc->starttime;
devc->starttime = time;
//expected_samplenum = ceil(elapsed / 1000000.0 * devc->cur_samplerate);
/* 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;
samples_to_send += ceil(elapsed / 1000000.0 * devc->cur_samplerate);
if (devc->limit_samples) {
if (sdi->mode == DSO && !devc->instant)
samples_to_send = MIN(samples_to_send,
devc->limit_samples - devc->pre_index);
else if (sdi->mode == ANALOG)
samples_to_send = MIN(samples_to_send * g_slist_length(sdi->channels),
devc->limit_samples - devc->pre_index);
else
samples_to_send = MIN(samples_to_send,
devc->limit_samples - devc->samples_counter);
}
if (samples_to_send > 0 && !devc->stop) {
sending_now = MIN(samples_to_send, (sdi->mode == DSO ) ? DSO_BUFSIZE : BUFSIZE);
samples_generator(devc->buf, sending_now, sdi, devc);
if (devc->trigger_stage != 0) {
for (i = 0; i < sending_now; i++) {
if (devc->trigger_edge == 0) {
if ((*(devc->buf + i) | devc->trigger_mask) ==
(devc->trigger_value | devc->trigger_mask)) {
devc->trigger_stage = 0;
break;
}
} else {
cur_sample = *(devc->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 (sdi->mode == ANALOG)
devc->samples_counter += sending_now/g_slist_length(sdi->channels);
else
devc->samples_counter += sending_now;
if (sdi->mode == DSO && !devc->instant &&
devc->samples_counter > devc->limit_samples)
devc->samples_counter = devc->limit_samples;
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 = devc->buf;
} else if (sdi->mode == DSO) {
/* Callback handling data */
static int receive_data(int fd, int revents, const struct sr_dev_inst *sdi)
{
struct dev_context *devc = sdi->priv;
struct sr_datafeed_packet packet;
struct sr_datafeed_logic logic;
struct sr_datafeed_dso dso;
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
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 == DSO) {