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demo: Keep separate counters for logic and analog sources. 

Since they have different internal buffer sizes, their output counters
are not in sync. See bug 295.
This commit is contained in:
Bert Vermeulen 2014-01-25 20:39:50 +01:00
parent aa48adf960
commit 7f4975b440
1 changed files with 21 additions and 18 deletions
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39
hardware/demo/demo.c
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@ -111,7 +111,8 @@ struct dev_context {
uint64_t cur_samplerate;
uint64_t limit_samples;
uint64_t limit_msec;
uint64_t samples_counter;
uint64_t logic_counter;
uint64_t analog_counter;
int64_t starttime;
uint64_t step;
/* Logic */
@ -624,7 +625,7 @@ static int prepare_data(int fd, int revents, void *cb_data)
struct sr_probe_group *pg;
struct analog_gen *ag;
GSList *l;
uint64_t samples_to_send, expected_samplenum, analog_samples, sending_now;
uint64_t logic_todo, analog_todo, expected_samplenum, analog_samples, sending_now;
int64_t time, elapsed;
(void)fd;
@ -637,20 +638,20 @@ static int prepare_data(int fd, int revents, void *cb_data)
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;
logic_todo = expected_samplenum - devc->logic_counter;
analog_todo = expected_samplenum - devc->analog_counter;
if (devc->limit_samples) {
samples_to_send = MIN(samples_to_send,
devc->limit_samples - devc->samples_counter);
logic_todo = MIN(logic_todo, devc->limit_samples - devc->logic_counter);
analog_todo = MIN(analog_todo, devc->limit_samples - devc->analog_counter);
}
while (samples_to_send > 0) {
sending_now = 0;
while (logic_todo || analog_todo) {
/* Logic */
if (devc->num_logic_probes > 0) {
sending_now = MIN(samples_to_send,
if (devc->num_logic_probes > 0 && logic_todo > 0) {
sending_now = MIN(logic_todo,
LOGIC_BUFSIZE / devc->logic_unitsize);
logic_generator(sdi, sending_now * devc->logic_unitsize);
packet.type = SR_DF_LOGIC;
@ -659,10 +660,12 @@ static int prepare_data(int fd, int revents, void *cb_data)
logic.unitsize = devc->logic_unitsize;
logic.data = devc->logic_data;
sr_session_send(sdi, &packet);
logic_todo -= sending_now;
devc->logic_counter += sending_now;
}
/* Analog, one probe at a time */
if (devc->num_analog_probes > 0) {
if (devc->num_analog_probes > 0 && analog_todo > 0) {
sending_now = 0;
for (l = devc->analog_probe_groups; l; l = l->next) {
pg = l->data;
@ -675,21 +678,21 @@ static int prepare_data(int fd, int revents, void *cb_data)
* beginning of our buffer. A ring buffer would
* help here as well */
analog_samples = MIN(samples_to_send, ag->num_samples);
analog_samples = MIN(analog_todo, ag->num_samples);
/* Whichever probe group gets there first. */
sending_now = MAX(sending_now, analog_samples);
ag->packet.num_samples = analog_samples;
sr_session_send(sdi, &packet);
}
analog_todo -= sending_now;
devc->analog_counter += sending_now;
}
samples_to_send -= sending_now;
devc->samples_counter += sending_now;
}
if (devc->limit_samples &&
devc->samples_counter >= devc->limit_samples) {
sr_info("Requested number of samples reached.");
devc->logic_counter >= devc->limit_samples &&
devc->analog_counter >= devc->limit_samples) {
sr_dbg("Requested number of samples reached.");
dev_acquisition_stop(sdi, cb_data);
return TRUE;
}
@ -707,7 +710,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
/* TODO: don't start without a sample limit set */
devc = sdi->priv;
devc->samples_counter = 0;
devc->logic_counter = devc->analog_counter = 0;
/*
* Setting two channels connected by a pipe is a remnant from when the