GOOGLE SET TIMER 1 MINUTE HOW TO

The interrupt gets called every 1 second and adds 1 to 'seconds'. Start the timer via the quick links or set the timer via the keyboard. I tested its accuracy and it works consistently down to the microsecond. minutessecondsStop alarmOnline timerCountdown timer. Here is a slightly modified program I made to easily set up timed interrupts. This code sets the prescaler to 1024, as slow as you can get.Ī prescaler of 1024 allows for a maximum time of 8388.608mS or ~8.3 seconds clockSelectBits = _BV(CS12) | _BV(CS10) So, cycles is NOT less than RESOLUTION - 1, therefore it was more than maximum To reset the timer to 1 minute, click the Reset button.

You can restart the timer by clicking the Start button again. If you need to pause the timer, simply click the Stop button to temporarily stop the countdown. Just follow these steps: Click on the Start button to start the 1-minute countdown. If(cycles < RESOLUTION) clockSelectBits = _BV(CS10) // no prescale, full xtalĮlse cycles = RESOLUTION - 1, clockSelectBits = _BV(CS12) | _BV(CS10) // request was out of bounds, set as maximum long cycles = (F_CPU / 2000000) * microseconds // the counter runs backwards after TOP, interrupt is at BOTTOM so divide microseconds by 2 Your code, which would have showed me the library you were usingĪnyway, here is what I found in the library I ASSUME you are using. I had to do alot of googling, which most people WILL NOT DO, simply because you failed to tell us basic things about your problem, such as:

GOOGLE SET TIMER 1 MINUTE HOW TO

First of all, PLEASE read the How To Use This Forum thread before you post.

Google set timer 1 minute