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make BateryStats::updateAvailable wrap-around-safe

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Bernhard Kirchen 2024-03-04 22:18:43 +01:00 committed by Bernhard Kirchen
parent fe7e622e2d
commit e432f0eca3
2 changed files with 7 additions and 1 deletions
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2
include/BatteryStats.h
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@ -15,7 +15,7 @@ class BatteryStats {
// the last time *any* datum was updated
uint32_t getAgeSeconds() const { return (millis() - _lastUpdate) / 1000; }
bool updateAvailable(uint32_t since) const { return _lastUpdate > since; }
bool updateAvailable(uint32_t since) const;
uint8_t getSoC() const { return _soc; }
uint32_t getSoCAgeSeconds() const { return (millis() - _lastUpdateSoC) / 1000; }

6
src/BatteryStats.cpp
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@ -51,6 +51,12 @@ static void addLiveViewAlarm(JsonVariant& root, std::string const& name,
root["issues"][name] = 2;
}
bool BatteryStats::updateAvailable(uint32_t since) const
{
auto constexpr halfOfAllMillis = std::numeric_limits<uint32_t>::max() / 2;
return (_lastUpdate - since) < halfOfAllMillis;
}
void BatteryStats::getLiveViewData(JsonVariant& root) const
{
root[F("manufacturer")] = _manufacturer;