90 lines
4.4 KiB
C++
90 lines
4.4 KiB
C++
#include "Measurement.h"
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#include "Config.h"
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#include <string.h>
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bool Measurement::start(float hz, float duty, float tolerance, uint32_t timeMs,
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uint8_t repeats, uint8_t settleCycles) {
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expectedHz_ = static_cast<uint32_t>(hz + 0.5f);
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if (!expectedHz_ || !timeMs || !repeats || repeats > 10 ||
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!makePeriodLimits(expectedHz_, duty, tolerance, receiver_.tickHz(), limits_) ||
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!receiver_.start(expectedHz_)) return false;
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timeMs_ = timeMs; repeats_ = repeats; settleLeft_ = settleCycles;
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stats_.reset(); memset(repeatPeriods_, 0, sizeof(repeatPeriods_));
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measurementStartTick_ = deadlineTick_ = 0; startedMs_ = millis();
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measurementStartMs_ = lastPeriodMs_ = 0;
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currentRepeat_ = 0;
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expectedPeriodMs_ = static_cast<uint32_t>((1000ULL + expectedHz_ - 1U) / expectedHz_);
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if (!expectedPeriodMs_) expectedPeriodMs_ = 1;
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state_ = MeasureState::SETTLING; return true;
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}
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void Measurement::fail(FailReason reason) {
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if (stats_.reason == FailReason::NONE) stats_.reason = reason;
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receiver_.stop(); state_ = MeasureState::FAIL;
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}
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void Measurement::completeWindow() {
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receiver_.stop();
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stats_.lostItems += receiver_.takeDroppedItems();
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if (receiver_.overflowed()) { fail(FailReason::GLITCH); return; }
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for (uint8_t i = 0; i < repeats_; ++i) if (!repeatPeriods_[i]) {
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fail(FailReason::TOO_FEW_PERIODS); return;
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}
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if (stats_.lostItems && stats_.reason == FailReason::NONE) stats_.reason = FailReason::DATA_LOST;
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state_ = MeasureState::PASS;
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}
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MeasureState Measurement::update() {
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if (state_ != MeasureState::SETTLING && state_ != MeasureState::RUNNING) return state_;
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if (receiver_.overflowed()) { fail(FailReason::GLITCH); return state_; }
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bool receivedPeriod = false;
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for (;;) {
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const size_t periodCount = receiver_.readPeriods(periodBatch_, PERIOD_BATCH_SIZE);
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stats_.lostItems += receiver_.takeDroppedItems();
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if (!periodCount) break;
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receivedPeriod = true;
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for (size_t periodIndex = 0; periodIndex < periodCount; ++periodIndex) {
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const PulsePeriod &period = periodBatch_[periodIndex];
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if (state_ == MeasureState::SETTLING) {
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if (settleLeft_) --settleLeft_;
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if (!settleLeft_) {
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measurementStartTick_ = period.startTick + period.periodTicks;
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repeatTicks_ = static_cast<uint64_t>(receiver_.tickHz()) * timeMs_ / 1000ULL;
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deadlineTick_ = measurementStartTick_ + repeatTicks_ * repeats_;
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nextRepeatTick_ = measurementStartTick_ + repeatTicks_;
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stats_.reset(); measurementStartMs_ = lastPeriodMs_ = millis(); state_ = MeasureState::RUNNING;
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}
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continue;
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}
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const uint64_t endTick = period.startTick + period.periodTicks;
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if (period.startTick < measurementStartTick_) continue; // leading incomplete period
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if (endTick > deadlineTick_) { completeWindow(); return state_; } // trailing incomplete period
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while (currentRepeat_ + 1U < repeats_ && period.startTick >= nextRepeatTick_) {
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++currentRepeat_; nextRepeatTick_ += repeatTicks_;
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}
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++repeatPeriods_[currentRepeat_];
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const FailReason r = evaluatePeriodFast(period, receiver_.tickHz(), limits_, currentRepeat_ + 1, stats_);
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if (r != FailReason::NONE) { fail(r); return state_; }
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}
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}
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if (receivedPeriod && state_ == MeasureState::RUNNING) lastPeriodMs_ = millis();
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const uint64_t edgeBasedTimeout =
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static_cast<uint64_t>(PWM_SETTLE_CYCLES + NO_SIGNAL_TIMEOUT_PERIODS) * expectedPeriodMs_ + 20;
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const uint64_t rmtBatchTimeout =
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static_cast<uint64_t>(RMT_MIN_RECEIVE_SYMBOLS + NO_SIGNAL_TIMEOUT_PERIODS) * expectedPeriodMs_ + 20;
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const uint64_t settleTimeout = edgeBasedTimeout > rmtBatchTimeout ? edgeBasedTimeout : rmtBatchTimeout;
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if (state_ == MeasureState::SETTLING && millis() - startedMs_ > settleTimeout) fail(FailReason::NO_SIGNAL);
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if (state_ == MeasureState::RUNNING && measurementStartTick_) {
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const uint32_t now = millis();
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const uint32_t totalMs = timeMs_ * repeats_;
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const uint32_t edgeTimeoutMs = expectedPeriodMs_ * NO_SIGNAL_TIMEOUT_PERIODS + 2;
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if (now - measurementStartMs_ < totalMs && now - lastPeriodMs_ > edgeTimeoutMs) {
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fail(FailReason::LOST_EDGE); return state_;
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}
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if (now - measurementStartMs_ > totalMs + expectedPeriodMs_ + 2) completeWindow();
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}
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return state_;
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}
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void Measurement::abort() { if (state_ == MeasureState::SETTLING || state_ == MeasureState::RUNNING) fail(FailReason::ABORTED); }
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