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Improve battery percentage calculation and reporting

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While charging, percentage should only go up, and while discharging,
percentage should only go down.
This commit is contained in:
Riku Isokoski
2021-10-04 01:41:38 +03:00
parent b84a546920
commit a9f7153fdf
5 changed files with 14 additions and 14 deletions
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15
src/components/battery/BatteryController.cpp
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@@ -69,18 +69,23 @@ void Battery::SaadcEventHandler(nrfx_saadc_evt_t const* p_event) {
// p_event->data.done.p_buffer[0] = (adc_voltage / reference_voltage) * 1024
voltage = p_event->data.done.p_buffer[0] * (8 * 600) / 1024;
uint8_t newPercent;
if (isFull) {
percentRemaining = 100;
newPercent = 100;
} else if (voltage < battery_min) {
percentRemaining = 0;
newPercent = 0;
} else {
percentRemaining = std::min((voltage - battery_min) * 100 / (battery_max - battery_min), isCharging ? 99 : 100);
newPercent = std::min((voltage - battery_min) * 100 / (battery_max - battery_min), isCharging ? 99 : 100);
}
if ((isPowerPresent && newPercent > percentRemaining) || (!isPowerPresent && newPercent < percentRemaining) || firstMeasurement) {
firstMeasurement = false;
percentRemaining = newPercent;
systemTask->PushMessage(System::Messages::BatteryPercentageUpdated);
}
nrfx_saadc_uninit();
isReading = false;
systemTask->PushMessage(System::Messages::BatteryMeasurementDone);
}
}

1
src/components/battery/BatteryController.h
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@@ -42,6 +42,7 @@ namespace Pinetime {
bool isFull = false;
bool isCharging = false;
bool isPowerPresent = false;
bool firstMeasurement = true;
void SaadcInit();