AVR-Chat

Hello Randy & Zonya,
 
Here is quadrature encoder decoding code in assembly. I use one external interrupt for a encoder and handle both the rising and falling edges of one encoder signal ( one of A or B ). This translates to 2x resolution. If you have a single motor and the other external interrupt is free for use, you can listen to both encoder signal for both edges which will give you 4x resolution.
 
Regarding to my software YahooGroup Agent on my site, lately i found a bug in it and suspended its download. I'll inform you when I fix it.

 

Regards

Murat Karadeniz

http://www.onlinefavbar.com/mukas/

 


Randy & Zonya Ledyard <rledyard@bigfoot.com> wrote:
Murat
 
I would be interested in that code for the quadrature encoders decoding - assembly is fine
 
By the way, I was on your website, and tried to download the YahooGroup Agent program, but it won't download - can you check that?
 
Randy
-----Original Message-----
From: MuRaT KaRaDeNiZ [mailto:karademu@yahoo.com]
Sent: Monday, January 10, 2005 2:51 PM
To: AVR-Chat@yahoogroups.com
Subject: Re: [AVR-Chat] asking about encoder..external interrupts or counter???


I use At90s8535 in a motor controller board I designed. Look at:
http://www.onlinefavbar.com/mukas/index.htm?electronics.htm
 
I use external interrupts to increment/decrement the software counters. If you are interested I can give you the quadrature encoder decoding code in assembly.
 
regards
 
Murat Karadeniz




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