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revert to very simple pps time sync

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This commit is contained in:
Manuel Pitz 2021-07-12 17:52:27 +02:00
parent e1fb92b79d
commit 037bec2a68
1 changed files with 40 additions and 2 deletions
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42
lib/hooks/pps_ts.cpp
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@ -85,9 +85,12 @@ public:
SingleSignalHook::parse(json);
double fSmps = 0;
ret = json_unpack_ex(json, &err, 0, "{ s?: f, s: F }",
ret = json_unpack_ex(json, &err, 0, "{ s?: f, s: F, s?: i, s?: i }",
"threshold", &threshold,
"expected_smp_rate", &fSmps
"expected_smp_rate", &fSmps,
"horizon_estimation", &horizonEstimation,
"horizon_compensation", &horizonCompensation
);
if (ret)
throw ConfigError(json, err, "node-config-hook-pps_ts");
@ -99,7 +102,42 @@ public:
state = State::PARSED;
}
virtual villas::node::Hook::Reason process(sample *smp)
{
assert(state == State::STARTED);
/* Get value of PPS signal */
float value = smp->data[signalIndex].f; // TODO check if it is really float
/* Detect Edge */
bool isEdge = lastValue < threshold && value > threshold;
lastValue = value;
if (isEdge) {
tsVirt.tv_sec = time(nullptr);
tsVirt.tv_nsec = 0;
period = 1.0 / cntSmps;
cntSmps = 0;
cntEdges++;
} else {
struct timespec tsPeriod = time_from_double(period);
tsVirt = time_add(&tsVirt, &tsPeriod);
}
cntSmps++;
if (cntEdges < 5)
return Hook::Reason::SKIP_SAMPLE;
smp->ts.origin = tsVirt;
smp->flags |= (int) SampleFlags::HAS_TS_ORIGIN;
if ((smp->sequence - lastSequence) > 1)
logger->warn("Samples missed: {} sampled missed", smp->sequence - lastSequence);
lastSequence = smp->sequence;
return Hook::Reason::OK;
}
virtual villas::node::Hook::Reason process_bak(sample *smp)
{
assert(state == State::STARTED);