Method start

include/distortos/SoftwareTimer.hpp:74–79

	template<typename Rep1, typename Period1, typename Rep2 = TickClock::rep, typename Period2 = TickClock::period>
	int start(const std::chrono::duration<Rep1, Period1> duration,
			const std::chrono::duration<Rep2, Period2> period = {})
	{
		return start(std::chrono::duration_cast<TickClock::duration>(duration),
				std::chrono::duration_cast<TickClock::duration>(period));
	}

	/**
	 * \brief Starts the timer.