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[avr-gcc-list] clock frequency, prescalers and timers

From: Timothy Smith
Subject: [avr-gcc-list] clock frequency, prescalers and timers
Date: Tue, 14 Mar 2006 19:13:42 +1000
User-agent: Thunderbird 1.5 (X11/20060128)

can anyone explain in simple terms how i can calculate the time it will take for the timer overflow interrupt to trigger using the prescaler? i have had success in writing my own little programs to make various led's blink etc but doing this in terms of seconds or minutes still escapes my grasp of the concept.

lastly after all that, the board i have has a real time clock on it connected to T10, would it be easier to just use that to time things and if so an example of it?

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