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#include "components/stopwatch/StopWatchController.h"
using namespace Pinetime::Controllers;
namespace {
TickType_t CalculateDelta(const TickType_t startTime, const TickType_t currentTime) {
TickType_t delta = 0;
// Take care of overflow
if (startTime > currentTime) {
delta = 0xffffffff - startTime;
delta += (currentTime + 1);
} else {
delta = currentTime - startTime;
}
return delta;
}
}
StopWatchController::StopWatchController() {
Clear();
}
// State Change
void StopWatchController::Start() {
currentState = StopWatchStates::Running;
startTime = xTaskGetTickCount();
}
void StopWatchController::Pause() {
currentState = StopWatchStates::Paused;
timeElapsedPreviously += CalculateDelta(startTime, xTaskGetTickCount());
}
void StopWatchController::Clear() {
currentState = StopWatchStates::Cleared;
timeElapsedPreviously = 0;
for (int i = 0; i < LAP_CAPACITY; i++) {
laps[i].count = 0;
laps[i].time = 0;
}
lapCount = 0;
lapHead = 0;
}
// Lap
void StopWatchController::PushLap() {
TickType_t lapEnd = GetElapsedTime();
laps[lapHead].time = lapEnd;
laps[lapHead].count = lapCount + 1;
lapCount += 1;
lapHead = lapCount % LAP_CAPACITY;
}
int StopWatchController::GetLapNum() {
if (lapCount < LAP_CAPACITY)
return lapCount;
else
return LAP_CAPACITY;
}
int StopWatchController::GetLapCount() {
return lapCount;
}
int Wrap(int index) {
return ((index % LAP_CAPACITY) + LAP_CAPACITY) % LAP_CAPACITY;
}
LapInfo* StopWatchController::LastLap(int lap) {
if (lap >= LAP_CAPACITY || lap > lapCount || lapCount == 0) {
// Return "empty" LapInfo_t
return &emptyLapInfo;
}
// Index backwards
int index = Wrap(lapHead - lap);
return &laps[index];
}
// Data / State acess
TickType_t StopWatchController::GetElapsedTime() {
if (!IsRunning()) {
return timeElapsedPreviously;
}
return timeElapsedPreviously + CalculateDelta(startTime, xTaskGetTickCount());
}
bool StopWatchController::IsRunning() {
return currentState == StopWatchStates::Running;
}
bool StopWatchController::IsCleared() {
return currentState == StopWatchStates::Cleared;
}
bool StopWatchController::IsPaused() {
return currentState == StopWatchStates::Paused;
}
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