unsigned long pulseIn(uint8_t pin, uint8_t state, unsigned long timeout) {
uint8_t _state;
unsigned long long int _timeout, now_time, width = 0L;
if(pin >= PINS) return 0x00;
_timeout = ((unsigned long long int)timeout)*333L + getclocks64(); // CPUCLK = 300MHz
while(digitalRead(pin) == state)
if(getclocks64() >= _timeout)
return 0;
while(digitalRead(pin) != state)
if(getclocks64() >= _timeout)
return 0;
now_time = getclocks64();
while(digitalRead(pin) == state)
if(getclocks64() >= _timeout)
return 0;
width = getclocks64() - now_time;
width = (unsigned long long int)(width * 0.00333); // CPUCLK = 300MHz
return ((unsigned long)width); // unit is micro second
}
unsigned long long int micros() {
#define CLOCKS_PER_MICROSEC (299UL)
return (getclocks64()/CLOCKS_PER_MICROSEC);
}
