#pragma once
#include <Arduino.h>

struct Sample {
  uint32_t epoch;
  float    mslHpa;
  float    tempC;
};

void   historyBegin();
void   historyAdd(uint32_t epoch, float mslHpa, float tempC);
int    historyCount();
Sample historyGet(int i);      // 0 = oldest
Sample historyLatest();
bool   historyTrendDelta(float& outDeltaHpa);
bool   historySave();
bool   historyLoad();