codex init

OpticalChannelTester/Measurement.h

@@ -0,0 +1,27 @@
+#pragma once
+#include "Receiver.h"
+
+enum class MeasureState : uint8_t { IDLE, SETTLING, RUNNING, PASS, FAIL };
+
+class Measurement {
+ public:
+  explicit Measurement(PulseReceiver &receiver) : receiver_(receiver) {}
+  bool start(float expectedHz, float expectedDuty, float tolerancePct,
+             uint32_t testTimeMs, uint8_t repeats, uint8_t settleCycles);
+  MeasureState update();
+  void abort();
+  MeasureState state() const { return state_; }
+  FailReason reason() const { return stats_.reason; }
+  const StageStats &stats() const { return stats_; }
+ private:
+  void fail(FailReason reason);
+  PulseReceiver &receiver_;
+  MeasureState state_ = MeasureState::IDLE;
+  StageStats stats_ = {};
+  float expectedHz_ = 0, expectedDuty_ = 0, tolerance_ = 0;
+  uint32_t timeMs_ = 0;
+  uint8_t repeats_ = 0, settleLeft_ = 0;
+  uint64_t measurementStartTick_ = 0, deadlineTick_ = 0, repeatTicks_ = 0;
+  uint32_t startedMs_ = 0, measurementStartMs_ = 0, lastPeriodMs_ = 0;
+  uint32_t repeatPeriods_[10] = {};
+};