It is like in theArduino Simple Audio Frequency Meterbut includes additional noise check. Thetimer 0 interrupt, which counts the milliseconds,is disabled during readingand enabled afterwards! The value of millis() is adjusted after reading.
Example Timer interrupt The implementation of ATTiny85 Timer0 "on compare" interrupt handler. This header exposes an objectTimer0Compareof classTinyTimer. TinyTimer0Overflow The implementation of ATTiny85 Timer0 "on overflow" interrupt handler. ...
The two interrupt service routines are really simple; just a line each. They simply set or clear the output we're using, PB3. First we set the output on an overflow:ISR(TIMER1_OVF_vect) { bitClear(PORTB, White); }Then we clear the output on a compare match:...
It is like in theArduino Simple Audio Frequency Meterbut includes additional noise check. Thetimer 0 interrupt, which counts the milliseconds,is disabled during readingand enabled afterwards! The value of millis() is adjusted after reading.