AVR-Chat

filipesbp wrote:
> Hi again,
> 
> My objective is to read a Infrared command signal (Airconditioner 
> remote command), that is modulated in 38Khz, to later reproduze the 
> commands, i've past the signal to TTL and the question is, what is the 
> best way to read that signal?
> 
> I'm using ATMega128 and a crystal of 15.3Mhz to be 100% with USART.
> 
> External Interrupts?
> Timer/Counter? 8bit? 16bit? Counter1? Counter2?
> I will need to read at least at 76Khz (2x38Khz), right?
> My first idea is to use a internal interrupt that occurs at a rate 
> bigger 76Khz, and see if the signal is at 1 or 0, is this the best?

Either an external interrupt or better yet, use an pulse/edge capture 
interrupt.

DLC
-- 
---------------------------------------
Dennis Clark    TTT Enterprises
---------------------------------------