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The interrupt gets called every 1 second and adds 1 to 'seconds'. I tested its accuracy and it works consistently down to the microsecond.
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You can choose between an hour-based timer that ranges between 1-12 hours, a minute-based timer that ranges between 1-120 minutes, and a second. Simply click Use different online timer and you’ll be directed to a new page. In 'timer settings' you can change the time for timer. Here is a slightly modified program I made to easily set up timed interrupts. If you need a timer set for a different amount of time than 2 hours, it is simple and quick to change the setting. If you want to start again and set timer for 17 minutes or set alarm for 17 minutes, just press the 'reset' button.
#SET TIMER FOR 1 MINUTE CODE#
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
#SET TIMER FOR 1 MINUTE FULL#
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 For that I would suggest the following solution based on your solution. I suspect what the questioner really wants is a control that toggles on one minute and off the next. 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… long cycles = (F_CPU / 2000000) * microseconds // the counter runs backwards after TOP, interrupt is at BOTTOM so divide microseconds by 2 Since the timer is set to autostart it will replace the HideMe almost immediately with Show me as soon as the timer stops and restarts.
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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: If you want to start again and set timer for 21 minutes or set alarm for 21 minutes, just press the 'reset' button.
#SET TIMER FOR 1 MINUTE HOW TO#
First of all, PLEASE read the How To Use This Forum thread before you post. Early in our blog we’ve released 1 Minute Timer presentation for PowerPoint and soon after two days, we’ve received another One Minute Timer presentation from a user named Nigel from New York. If you want to start again and set timer for 6 minutes or set alarm for 6 minutes, just press the 'reset' button.