diff options
-rw-r--r-- | timer_irq/timer_irq.ino | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/timer_irq/timer_irq.ino b/timer_irq/timer_irq.ino new file mode 100644 index 0000000..f42428e --- /dev/null +++ b/timer_irq/timer_irq.ino @@ -0,0 +1,31 @@ + +boolean toggle; + +ISR(TIMER1_COMPA_vect) // Timer Interrupt Routine +{ + if (toggle) { + digitalWrite(13, HIGH); + toggle = 0; + } else { + digitalWrite(13, LOW); + toggle = 1; + } +} + +void setup() +{ + pinMode(13, OUTPUT); + cli(); // interrupts ausschalten + // Timer1 für 1 Hz konfigurieren + TCCR1A = 0; + TCCR1B = 0; + OCR1A = 15624; // (16 MHz / 1024) -1 + TCCR1B |= (1 << WGM12); // CTC Modus + TCCR1B |= (1 << CS12)|(1 << CS10); // Prescaler auf 1024 + TIMSK1 |= (1 << OCIE1A); // Timer Compare Interupt anschalten + sei(); // interrupts anschalten +} + +void loop() { + // hier ist nix +} |