fsfw/src/fsfw/timemanager/Countdown.cpp

#include "fsfw/timemanager/Countdown.h"

Countdown::Countdown(uint32_t initialTimeout): timeout(initialTimeout) {
}

Countdown::~Countdown() {
}

ReturnValue_t Countdown::setTimeout(uint32_t milliseconds) {
	ReturnValue_t returnValue = Clock::getUptime( &startTime );
	timeout = milliseconds;
	return returnValue;
}

bool Countdown::hasTimedOut() const {
	if ( uint32_t( this->getCurrentTime() - startTime) >= timeout) {
		return true;
	} else {
		return false;
	}
}

bool Countdown::isBusy() const {
	return !hasTimedOut();
}

ReturnValue_t Countdown::resetTimer() {
	return setTimeout(timeout);
}

void Countdown::timeOut() {
	startTime = this->getCurrentTime() - timeout;
}

uint32_t Countdown::getRemainingMillis() const {
	// We fetch the time before the if-statement
	// to be sure that the return is in
	// range 0 <= number <= timeout
	uint32_t currentTime = this->getCurrentTime();
	if (this->hasTimedOut()){
		return 0;
	}else{
		return (startTime + timeout) - currentTime;
	}
}

uint32_t Countdown::getCurrentTime() const {
	uint32_t currentTime;
	Clock::getUptime( &currentTime );
	return currentTime;
}