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#include <avr/io.h> #include <avr/interrupt.h> class Counter { private: Counter(const Counter ©); public: uint8_t overflowed; Counter() : overflowed(0) {} inline void start() { overflowed = 0; TCNT1 = 0; TCCR1A = 0; TCCR1B = _BV(CS10); TIMSK1 = _BV(TOIE1); } inline uint16_t stop() { TCCR1B = 0; return TCNT1; } }; extern Counter counter;