AVR-Chat

My understanding of CTC (Clear Timer on Compare) is to generate or
output a PWM not time an input. 

-----Original Message-----
From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On
Behalf Of James Washer
Sent: Tuesday, March 07, 2006 12:16 AM
To: AVR-Chat@yahoogroups.com
Subject: Re: [AVR-Chat] How to measure a pulse width



In a word... well... 3 letters... CTC
On Mon, 6 Mar 2006 23:14:48 -0500
"wbounce" <wbounce@safeplace.net> wrote:

> I need to measure how long a pulse is. I have a m128. The pulse goes 
> +5V for 1ms to 36.9ms and then goes 0v for a fixed 65ms. I need to 
> time how long the +5V part is in 10us increments. How would I do that?

> I will wire the sensor generating the pulse to a pin. I seem to 
> remember something about a capture ability but I do not understand how

> it works or how to set it up. The fact that the pulse is assymetrical 
> probably does not help.
>  
> I am already using timer0 fir a ms timer and timer3 (a and b) for pwm 
> output. so I guess I would have to use timer1 or 2.
> 


 
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