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#pragma once
#include <cstdint>
#include <drivers/include/nrfx_saadc.h>
#include <systemtask/SystemTask.h>
namespace Pinetime {
namespace Controllers {
class Battery {
public:
Battery();
void ReadPowerState();
void MeasureVoltage();
void Register(System::SystemTask* systemTask);
uint8_t PercentRemaining() const {
return percentRemaining;
}
bool BatteryIsLow() const {
return percentRemaining <= lowBatteryThreshold;
}
uint16_t Voltage() const {
return voltage;
}
bool IsCharging() const {
// isCharging will go up and down when fully charged
// isFull makes sure this returns false while fully charged.
return isCharging && !isFull;
}
bool IsPowerPresent() const {
return isPowerPresent;
}
private:
static Battery* instance;
nrf_saadc_value_t saadc_value;
static constexpr nrf_saadc_input_t batteryVoltageAdcInput = NRF_SAADC_INPUT_AIN7;
uint16_t voltage = 0;
uint8_t percentRemaining = 0;
uint8_t lastPercentRemaining = 0;
bool isFull = false;
bool isCharging = false;
bool isPowerPresent = false;
bool firstMeasurement = true;
void SaadcInit();
void SaadcEventHandler(nrfx_saadc_evt_t const* p_event);
static void AdcCallbackStatic(nrfx_saadc_evt_t const* event);
static constexpr uint8_t lowBatteryThreshold {20};
bool isReading = false;
Pinetime::System::SystemTask* systemTask = nullptr;
};
}
}
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